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Concrete and Masonry ~ Professional Development Courses
The following is a summary of currently confirmed technical courses and presentations provided by PJ Materials Consultants or other associated organizations. You may link to the appropriate organization where indicated for more information - or to register directly.
The following is a summary of currently confirmed technical courses and presentations provided by PJ Materials Consultants or other associated organizations. You may link to the appropriate organization where indicated for more information - or to register directly.
If you have an interest in an in-house course for your company - or you would like to be on our mailing list for future courses, please contact us.
Conservation of Heritage Structures
Project Case Studies
A three-day workshop featuring case studies of conservation projects that utilized practical strategies based on technical concepts
Description
This three-day workshop has been developed to provide examples of critical factors that can influence the successful restoration, preservation and rehabilitation of heritage structures. Projects will be visually presented as case studies to highlight key technical and practical aspects. Sometimes the presentations will use an individual project - from the investigation stage through to completion of the restoration - and sometimes a number of abbreviated (mini) case studies will be used to cover specific factors. The projects include institutional, residential and municipal buildings, churches, a masonry memorial tower, a lighthouse, museums and more - many of them National Historic Sites. A variety of different types of masonry construction and restoration methods will be illustrated by the case studies.
Special features
Attendees may register for one or two days or for the full three-day workshop.
The topics will be presented using digital slide projection with extensive use of photographs, charts and graphs.
Many topics will also include video presentations.
A tour of the “Catholic Hill” sites, including the Basilica, will take place at the end of the third day.
Dinner (optional) will be organized on the first and second evening at local heritage building restaurants
Course Topics
Introduction ~ Guelph’s Historic Catholic Hill ~ A brief overview of the historical buildings at the workshop location, including the Basilica of Our Lady Immaculate (dedicated in 1888 and known for generations as “the Catholic Church on the Hill”), the Rectory (built in 1857 originally as a college and subsequently converted to a residence and administrative building),and the Guelph Civic Museum, also built in 1857as a nun’s residence and boarding school but serving for decades as a convent for the Loretto Sisters.
Conservation Strategies - The Idealistic, the Pragmatic & the Disastrous! ~ This introductory presentation highlights the influencing factors that should be considered when developing strategies that meet the guiding principles of the recently developed text-book “Standards and Guidelines for the Conservation of Heritage Places in Canada.” The benefits and cautions of the various components that make up an objective strategy are evaluated - and how they can influence the success or failure of a project. Examples of strategies other than those associated with good conservation practice will also be discussed!
Conserving Cultural Heritage Resources - Avoiding “Demolition by Neglect” ~ Guest Presenter Stephen Robinson.
As Senior Heritage Planner for the City of Guelph, our guest presenter is well-placed to understand the challenges in avoiding demolition by neglect of cultural heritage resources when they are in critical need of attention and repair - especially when funds are limited. This presentation evaluates these challenges from the municipal heritage planner’s perspective and discusses ways in which heritage evaluations, impact assessments and conservation plans can benefit the property owner and the community.
The Importance of Investigation, Monitoring and Cause Analysis ~ A compilation of mini-case studies will be used to illustrate where structured investigations formed a critical part of the restoration strategy development process. The studies will feature the use of non-destructive testing techniques - such as Ground Penetrating Radar to investigate hidden conditions - as well as movement and moisture monitoring devices, such as laser measuring equipment, displacement gages, and RH sensors.
Understanding Masonry Construction & How it Influences Durability ~ Several mini-case studies will be used to illustrate the considerable number of different masonry assemblies that can be encountered during condition assessments of buildings and structures. Also discussed will be how the transition from traditional mass masonry construction to modern cavity walls sometimes created buildings that suffered accelerated deterioration and damage due to inappropriate design and detailing.
Stabilizing, Repairing & Strengthening Cracked Traditional Masonry ~ Two case studies will be presented to illustrate techniques that may be considered when faced with restoring buildings suffering from severe cracking of masonry components. The causes of the cracking will be evaluated and how this influenced the development of restoration strategies. Below grade waterproofing and the use of core rubble grouting techniques will be presented, together with the installation of retrofit masonry ties and joint reinforcement.
Wall Anchoring, Reinforcing & Stabilizing Systems ~ Guest Presenter, Stephen Franks ~ This presentation utilises actual projects to evaluate the options and considerations that should be considered when faced with the need for stabilizing and/or strengthening heritage structures and older buildings that have suffered from damage caused by overload, differential movement, inner core rubble or collar joint deterioration, missing or corroding wall ties and anchors, etc. Available systems are discussed together with key factors that should be considered.
A Holistic Approach to Conserving Heritage Structures ~ A comprehensive study of how a 100-year old badly damaged art gallery and museum was restored to a durable condition will be presented from investigation to completion. The primary and influencing causes of the damage will be examined, together with some novel techniques that countered what had happened to the building during past restoration and renovation work. The importance of the investigation process and understanding how the masonry assembly can be vulnerable to original design factors will be presented, as well as lessons to be learned when renovation work includes a dramatic change to the gravity load distribution dynamics of a structure.
Cape Race Lighthouse - A History of Restoration ~ Constructed in 1905 and designated a National Historic Site in 1975, Cape Race Lighthouse is believed to be the oldest reinforced concrete lighthouse in North America. Over the decades, it has undergone three major attempts at restoration, each failing to address the cause of the deterioration - with more damage being the result. The history of these attempts is reviewed by the presentation, together with details of the most recent comprehensive and novel restoration project which - hopefully - addressed both the cause and the result!
Considering Structural Aspects & Implications ~ Guest Presenter Gerry Zegerius ~ Damage, deterioration and defects within the exterior fabric of buildings and structures can often be caused by structural inadequacies. For example, a structural deficiency can sometimes cause cracking which subsequently leads to poor durability. For example, sometimes insidious corrosion of hidden metal components can be contributing to problems that may eventually become more serious. Case studies will be used in this presentation to evaluate some of the concerns that should be considered when faced with the potential poor “structural health” of heritage structures and older buildings.
Conservation of Fredericton City Hall ~ Built in 1876, Fredericton City Hall is a National Historic Site. Over the years, restoration work had been carried out to restore cracked masonry - but the cracks either reopened or continued to occur at other locations. This case study will comprehensively review details of the investigation phase which identified several influencing factors that caused the cracks, as well as the restoration work which addressed the causes and restored the building to a durable condition.
Masonry Conservation of the Guelph Civic Museum ~ Guest Presenter, Gerry Zegerius ~ This presentation highlights the key components of a strategy developed to conserve the exterior masonry of this heritage municipal building - formerly a convent. The condition assessment and its findings will be discussed as well as the work to stabilize the foundations by core rubble grouting and masonry tie installation. The conservation work also included total repointing of the dimension stone masonry. The presentation will also include the use of video.
A Tale of One Tower! ~ The case study highlights major restoration work carried out on the Dingle Memorial Tower in Halifax, Nova Scotia, to address the extensive damage that had occurred to both the interior and exterior of the stone tower. The causes of the damage will be discussed, together with the reasons why the masonry had continued to crack - even after previous restoration work had been carried out some years before. The presentation will also highlight the combination of conventional and novel restoration materials and techniques that were used to restore the tower to a durable condition.
Accommodating Excessive Differential Movement ~ A University Fine Arts building in Sackville, NB and a stone church in Moncton, NB will be used to illustrate where strategies can be developed to counter excessive differential movement that sometimes occurs between building components. How the strategies can help to prevent re-occurrence of damage will also be presented.
Conservation of the Basilica’s Rectory & Parish Office ~ Guest Presenter, Roberto Chiotti ~ Currently, this fine old building - formerly a seminarial college - is in its second year of major restoration and renovation. Our guest speaker, the Architect for the project, will present the challenges from drawing board, through investigation, strategy development, project implementation and administration.
Cladding Panel Deterioration ~ Solving the Mystery ~ For many years a mystery existed regarding Mount Allison University’s Convocation Hall in Sackville, NB - why was it that the sandstone cladding wall panels at the base of the imposing entrance were deteriorating so badly? How the mystery was eventually solved and how the surprising cause was discovered and addressed are the topics of this presentation.
Restoration of Stone Porticos and Steps ~ Completed in 1827at the University of New Brunswick’s Fredericton Campus, the Sir Howard Douglas Hall building - commonly referred to as the Old Art Building - is the oldest university building still in use in Canada. The building was designated a National Historic Site in 1951.This presentation discusses a major restoration project to address the extensive deterioration of its entrances. The project - carried out in several phases - included dismantlement of the entrance columns, canopy, step units and wing walls The columns and canopy units were repaired and rebuilt but the step units, platform and wing walls were replaced with new fabricated sandstone. The challenges of the projects - including stone sourcing and fabrication, as well as a new design of the treads - are discussed within the presentation.
Conservation of Heritage Wooden Windows - Guest Speaker, Mark Shoalts ~ Using two of the buildings already used as case studies - the Basilica of Our Lady, in Guelph, and Fredericton City Hall, this presentation discusses the key materials and techniques that can be used to conserve wooden heritage window, including the use of Dutchmen and consolidation. The Basilica’s major window conservation will be visually illustrated in comprehensive detail.
A Tale of Two Towers ~ This presentation highlights the award-winning restoration of a National Historic Site in Guelph, Ontario - Church of Our Lady Phase I - Tower Restoration project. Deterioration mechanisms will be discussed, as well as the condition assessment process. Also examined will be the way in which the investigations assisted in the development of a restoration strategy to address the serious damage that had occurred - despite major restoration work carried out just 15-years before.
Date & Location: To be arranged - Please check back
Click to Download Brochure
Click to Download Registration Form
MODERN CONCRETE MATERIALS & PRACTICES
Utilizing the Benefits ~ Avoiding the Problems
A two-day course which focuses on the latest advances and state-of-the-art knowledge for the effective restoration of concrete
Description
This course examines many of the advances in concrete technology that have occurred over recent years and which can provide considerable benefit to the concrete and construction industries - and ensure the design and construction of long-lasting, durable structures. The experiences of the presenter as a troubleshooting investigator are used to illustrate how incorrect practices and/or the selection of inappropriate materials can still sometimes inadvertently lead to failures and/or early deterioration of concrete.
Who should attend
The program will be of special interest and a major benefit to all those involved in the design, specification, and construction of reinforced concrete structures, including government agencies, specifiers, architects, engineers and consultants, inspectors and technicians, as well as contractors' managers, supervisors and foremen. The program will also be of interest to materials suppliers' sales and technical personnel and trainees.
Why you should attend
In today's business world, reducing risk and avoiding liability are key factors that should be of great concern to everyone. The topics covered within the program have been designed to facilitate learning from the experiences of others - so that we can gain benefits from the use of modern advances in technology, while recognizing the cautions that we need to consider in order to avoid potential problems that can arise.
Special features
A purpose-designed binder and a USB flash drive containing comprehensive information, photographs and technical data, will be provided to each participant. Participants will be encouraged to ask questions, provide comments, and share their own experiences and problems. The cost for both the binder and USB flash drive are included in the registration fee.
Course Topics
Modern Concrete - is it really more durable? ~ An often asked question is “Why does today’s concrete not perform as well as traditional concrete used to?” In this opening topic the evolution of concrete is reviewed, so that the many changes in materials and practices that have taken place can be reviewed to reveal the most likely answer to the question.
What is High Performance Concrete and can anyone produce or achieve it? ~ Confusion often exists regarding the true meaning of High Performance Concrete and particularly regarding whether or not it can be satisfactorily produced using locally available materials and workers. In this topic, the technology is demystified, the benefits explained and the dangers highlighted.
Why low water/cement ratio is not always appropriate for durability ~ A low water cement ratio has almost always been considered a critical requirement for high strength and good durability - and usually this is true. However, this topic will explain why a low w/c ratio can sometimes be detrimental and why care is therefore required.
Why silica fume can be beneficial - but sometimes disastrous ~ Silica fume has been used commercially for many years and its benefits are well known. This topic will highlight these benefits, but also explain some lesser known concerns that could cause failures if not well understood and considered during construction and repair.
The epoxy coated rebar controversy explained ~ When it was introduced in the late 1970's, the use of epoxy coated rebar was hailed as the most effective way to avoid corrosion problems. Today many authorities are exploring alternatives - but the reasons are not widely publicized. This topic explains their concerns and the associated problems.
How clean should rebar be before concrete placement - are we missing the point? ~ Although most specifications require reinforcement to be free of deleterious materials at the time of concrete placement, many experts claim that bond between concrete and steel is improved by some surface rust. This topic reviews whether this claim can be justified - but also introduces other concerns that are often over-looked and are arguably more important than bond of concrete to steel.
How important is curing and how does it affect durability? ~ Curing is arguably the single most influential practice that affects the achievement of durable concrete, but usually it receives the least amount of attention. This topic reviews good and bad practices and uses examples to illustrate the effects that these can have on cracking, strength, surface toughness, etc.
Producing and testing air entrained concrete - avoiding conflict ~ The benefits of air entrainment are well known and documented - but what effects do modern concrete materials have on the achievement of a satisfactory air void system? - and, are we adequately testing for it any way? This topic examines today’s materials and practices and attempts to answer these questions using examples that suggest that this can be a controversial subject.
Surface Scaling - the causes de-mystified and avoidance reviewed ~ There are many similarities in appearance between the various forms of surface defects that can be described as “scaling” and confusion often prevents correct diagnosis and/or avoidance. In this topic, the various types are classified and the factors that cause them are identified in order that their occurrence - and the conflict that sometimes accompanies them - can be avoided.
Field Testing Concrete ~ Contractors and ready-mixed concrete producers can sometimes be unfairly penalized when incorrect concrete testing procedures are used - or data from the correct tests are incorrectly interpreted. This topic provides examples of how tests can sometimes evaluate the wrong parameter and it reviews the dangers of not performing tests in accordance with specified requirements.
Coatings, sealers or membranes - do they work and are they necessary? ~ This topic probably produces the most disagreement among experts, with many arguing that most protection systems are sensitive to application - or that they just don’t provide adequate protection. Myths and mysteries are discussed under this topic, together with examples of past mistakes that have led to poor reputations for many systems.
Location & Date: To be arranged
This three-day workshop has been developed to provide examples of critical factors that can influence the successful restoration, preservation and rehabilitation of heritage structures. Projects will be visually presented as case studies to highlight key technical and practical aspects. Sometimes the presentations will use an individual project - from the investigation stage through to completion of the restoration - and sometimes a number of abbreviated (mini) case studies will be used to cover specific factors. The projects include institutional, residential and municipal buildings, churches, a masonry memorial tower, a lighthouse, museums and more - many of them National Historic Sites. A variety of different types of masonry construction and restoration methods will be illustrated by the case studies.
Special features
Attendees may register for one or two days or for the full three-day workshop.
The topics will be presented using digital slide projection with extensive use of photographs, charts and graphs.
Many topics will also include video presentations.
A tour of the “Catholic Hill” sites, including the Basilica, will take place at the end of the third day.
Dinner (optional) will be organized on the first and second evening at local heritage building restaurants
Course Topics
Introduction ~ Guelph’s Historic Catholic Hill ~ A brief overview of the historical buildings at the workshop location, including the Basilica of Our Lady Immaculate (dedicated in 1888 and known for generations as “the Catholic Church on the Hill”), the Rectory (built in 1857 originally as a college and subsequently converted to a residence and administrative building),and the Guelph Civic Museum, also built in 1857as a nun’s residence and boarding school but serving for decades as a convent for the Loretto Sisters.
Conservation Strategies - The Idealistic, the Pragmatic & the Disastrous! ~ This introductory presentation highlights the influencing factors that should be considered when developing strategies that meet the guiding principles of the recently developed text-book “Standards and Guidelines for the Conservation of Heritage Places in Canada.” The benefits and cautions of the various components that make up an objective strategy are evaluated - and how they can influence the success or failure of a project. Examples of strategies other than those associated with good conservation practice will also be discussed!
Conserving Cultural Heritage Resources - Avoiding “Demolition by Neglect” ~ Guest Presenter Stephen Robinson.
As Senior Heritage Planner for the City of Guelph, our guest presenter is well-placed to understand the challenges in avoiding demolition by neglect of cultural heritage resources when they are in critical need of attention and repair - especially when funds are limited. This presentation evaluates these challenges from the municipal heritage planner’s perspective and discusses ways in which heritage evaluations, impact assessments and conservation plans can benefit the property owner and the community.
The Importance of Investigation, Monitoring and Cause Analysis ~ A compilation of mini-case studies will be used to illustrate where structured investigations formed a critical part of the restoration strategy development process. The studies will feature the use of non-destructive testing techniques - such as Ground Penetrating Radar to investigate hidden conditions - as well as movement and moisture monitoring devices, such as laser measuring equipment, displacement gages, and RH sensors.
Understanding Masonry Construction & How it Influences Durability ~ Several mini-case studies will be used to illustrate the considerable number of different masonry assemblies that can be encountered during condition assessments of buildings and structures. Also discussed will be how the transition from traditional mass masonry construction to modern cavity walls sometimes created buildings that suffered accelerated deterioration and damage due to inappropriate design and detailing.
Stabilizing, Repairing & Strengthening Cracked Traditional Masonry ~ Two case studies will be presented to illustrate techniques that may be considered when faced with restoring buildings suffering from severe cracking of masonry components. The causes of the cracking will be evaluated and how this influenced the development of restoration strategies. Below grade waterproofing and the use of core rubble grouting techniques will be presented, together with the installation of retrofit masonry ties and joint reinforcement.
Wall Anchoring, Reinforcing & Stabilizing Systems ~ Guest Presenter, Stephen Franks ~ This presentation utilises actual projects to evaluate the options and considerations that should be considered when faced with the need for stabilizing and/or strengthening heritage structures and older buildings that have suffered from damage caused by overload, differential movement, inner core rubble or collar joint deterioration, missing or corroding wall ties and anchors, etc. Available systems are discussed together with key factors that should be considered.
A Holistic Approach to Conserving Heritage Structures ~ A comprehensive study of how a 100-year old badly damaged art gallery and museum was restored to a durable condition will be presented from investigation to completion. The primary and influencing causes of the damage will be examined, together with some novel techniques that countered what had happened to the building during past restoration and renovation work. The importance of the investigation process and understanding how the masonry assembly can be vulnerable to original design factors will be presented, as well as lessons to be learned when renovation work includes a dramatic change to the gravity load distribution dynamics of a structure.
Cape Race Lighthouse - A History of Restoration ~ Constructed in 1905 and designated a National Historic Site in 1975, Cape Race Lighthouse is believed to be the oldest reinforced concrete lighthouse in North America. Over the decades, it has undergone three major attempts at restoration, each failing to address the cause of the deterioration - with more damage being the result. The history of these attempts is reviewed by the presentation, together with details of the most recent comprehensive and novel restoration project which - hopefully - addressed both the cause and the result!
Considering Structural Aspects & Implications ~ Guest Presenter Gerry Zegerius ~ Damage, deterioration and defects within the exterior fabric of buildings and structures can often be caused by structural inadequacies. For example, a structural deficiency can sometimes cause cracking which subsequently leads to poor durability. For example, sometimes insidious corrosion of hidden metal components can be contributing to problems that may eventually become more serious. Case studies will be used in this presentation to evaluate some of the concerns that should be considered when faced with the potential poor “structural health” of heritage structures and older buildings.
Conservation of Fredericton City Hall ~ Built in 1876, Fredericton City Hall is a National Historic Site. Over the years, restoration work had been carried out to restore cracked masonry - but the cracks either reopened or continued to occur at other locations. This case study will comprehensively review details of the investigation phase which identified several influencing factors that caused the cracks, as well as the restoration work which addressed the causes and restored the building to a durable condition.
Masonry Conservation of the Guelph Civic Museum ~ Guest Presenter, Gerry Zegerius ~ This presentation highlights the key components of a strategy developed to conserve the exterior masonry of this heritage municipal building - formerly a convent. The condition assessment and its findings will be discussed as well as the work to stabilize the foundations by core rubble grouting and masonry tie installation. The conservation work also included total repointing of the dimension stone masonry. The presentation will also include the use of video.
A Tale of One Tower! ~ The case study highlights major restoration work carried out on the Dingle Memorial Tower in Halifax, Nova Scotia, to address the extensive damage that had occurred to both the interior and exterior of the stone tower. The causes of the damage will be discussed, together with the reasons why the masonry had continued to crack - even after previous restoration work had been carried out some years before. The presentation will also highlight the combination of conventional and novel restoration materials and techniques that were used to restore the tower to a durable condition.
Accommodating Excessive Differential Movement ~ A University Fine Arts building in Sackville, NB and a stone church in Moncton, NB will be used to illustrate where strategies can be developed to counter excessive differential movement that sometimes occurs between building components. How the strategies can help to prevent re-occurrence of damage will also be presented.
Conservation of the Basilica’s Rectory & Parish Office ~ Guest Presenter, Roberto Chiotti ~ Currently, this fine old building - formerly a seminarial college - is in its second year of major restoration and renovation. Our guest speaker, the Architect for the project, will present the challenges from drawing board, through investigation, strategy development, project implementation and administration.
Cladding Panel Deterioration ~ Solving the Mystery ~ For many years a mystery existed regarding Mount Allison University’s Convocation Hall in Sackville, NB - why was it that the sandstone cladding wall panels at the base of the imposing entrance were deteriorating so badly? How the mystery was eventually solved and how the surprising cause was discovered and addressed are the topics of this presentation.
Restoration of Stone Porticos and Steps ~ Completed in 1827at the University of New Brunswick’s Fredericton Campus, the Sir Howard Douglas Hall building - commonly referred to as the Old Art Building - is the oldest university building still in use in Canada. The building was designated a National Historic Site in 1951.This presentation discusses a major restoration project to address the extensive deterioration of its entrances. The project - carried out in several phases - included dismantlement of the entrance columns, canopy, step units and wing walls The columns and canopy units were repaired and rebuilt but the step units, platform and wing walls were replaced with new fabricated sandstone. The challenges of the projects - including stone sourcing and fabrication, as well as a new design of the treads - are discussed within the presentation.
Conservation of Heritage Wooden Windows - Guest Speaker, Mark Shoalts ~ Using two of the buildings already used as case studies - the Basilica of Our Lady, in Guelph, and Fredericton City Hall, this presentation discusses the key materials and techniques that can be used to conserve wooden heritage window, including the use of Dutchmen and consolidation. The Basilica’s major window conservation will be visually illustrated in comprehensive detail.
A Tale of Two Towers ~ This presentation highlights the award-winning restoration of a National Historic Site in Guelph, Ontario - Church of Our Lady Phase I - Tower Restoration project. Deterioration mechanisms will be discussed, as well as the condition assessment process. Also examined will be the way in which the investigations assisted in the development of a restoration strategy to address the serious damage that had occurred - despite major restoration work carried out just 15-years before.
Date & Location: To be arranged - Please check back
Click to Download Brochure
Click to Download Registration Form
MODERN CONCRETE MATERIALS & PRACTICES
Utilizing the Benefits ~ Avoiding the Problems
A two-day course which focuses on the latest advances and state-of-the-art knowledge for the effective restoration of concrete
Description
This course examines many of the advances in concrete technology that have occurred over recent years and which can provide considerable benefit to the concrete and construction industries - and ensure the design and construction of long-lasting, durable structures. The experiences of the presenter as a troubleshooting investigator are used to illustrate how incorrect practices and/or the selection of inappropriate materials can still sometimes inadvertently lead to failures and/or early deterioration of concrete.
Who should attend
The program will be of special interest and a major benefit to all those involved in the design, specification, and construction of reinforced concrete structures, including government agencies, specifiers, architects, engineers and consultants, inspectors and technicians, as well as contractors' managers, supervisors and foremen. The program will also be of interest to materials suppliers' sales and technical personnel and trainees.
Why you should attend
In today's business world, reducing risk and avoiding liability are key factors that should be of great concern to everyone. The topics covered within the program have been designed to facilitate learning from the experiences of others - so that we can gain benefits from the use of modern advances in technology, while recognizing the cautions that we need to consider in order to avoid potential problems that can arise.
Special features
A purpose-designed binder and a USB flash drive containing comprehensive information, photographs and technical data, will be provided to each participant. Participants will be encouraged to ask questions, provide comments, and share their own experiences and problems. The cost for both the binder and USB flash drive are included in the registration fee.
Course Topics
Modern Concrete - is it really more durable? ~ An often asked question is “Why does today’s concrete not perform as well as traditional concrete used to?” In this opening topic the evolution of concrete is reviewed, so that the many changes in materials and practices that have taken place can be reviewed to reveal the most likely answer to the question.
What is High Performance Concrete and can anyone produce or achieve it? ~ Confusion often exists regarding the true meaning of High Performance Concrete and particularly regarding whether or not it can be satisfactorily produced using locally available materials and workers. In this topic, the technology is demystified, the benefits explained and the dangers highlighted.
Why low water/cement ratio is not always appropriate for durability ~ A low water cement ratio has almost always been considered a critical requirement for high strength and good durability - and usually this is true. However, this topic will explain why a low w/c ratio can sometimes be detrimental and why care is therefore required.
Why silica fume can be beneficial - but sometimes disastrous ~ Silica fume has been used commercially for many years and its benefits are well known. This topic will highlight these benefits, but also explain some lesser known concerns that could cause failures if not well understood and considered during construction and repair.
The epoxy coated rebar controversy explained ~ When it was introduced in the late 1970's, the use of epoxy coated rebar was hailed as the most effective way to avoid corrosion problems. Today many authorities are exploring alternatives - but the reasons are not widely publicized. This topic explains their concerns and the associated problems.
How clean should rebar be before concrete placement - are we missing the point? ~ Although most specifications require reinforcement to be free of deleterious materials at the time of concrete placement, many experts claim that bond between concrete and steel is improved by some surface rust. This topic reviews whether this claim can be justified - but also introduces other concerns that are often over-looked and are arguably more important than bond of concrete to steel.
How important is curing and how does it affect durability? ~ Curing is arguably the single most influential practice that affects the achievement of durable concrete, but usually it receives the least amount of attention. This topic reviews good and bad practices and uses examples to illustrate the effects that these can have on cracking, strength, surface toughness, etc.
Producing and testing air entrained concrete - avoiding conflict ~ The benefits of air entrainment are well known and documented - but what effects do modern concrete materials have on the achievement of a satisfactory air void system? - and, are we adequately testing for it any way? This topic examines today’s materials and practices and attempts to answer these questions using examples that suggest that this can be a controversial subject.
Surface Scaling - the causes de-mystified and avoidance reviewed ~ There are many similarities in appearance between the various forms of surface defects that can be described as “scaling” and confusion often prevents correct diagnosis and/or avoidance. In this topic, the various types are classified and the factors that cause them are identified in order that their occurrence - and the conflict that sometimes accompanies them - can be avoided.
Field Testing Concrete ~ Contractors and ready-mixed concrete producers can sometimes be unfairly penalized when incorrect concrete testing procedures are used - or data from the correct tests are incorrectly interpreted. This topic provides examples of how tests can sometimes evaluate the wrong parameter and it reviews the dangers of not performing tests in accordance with specified requirements.
Coatings, sealers or membranes - do they work and are they necessary? ~ This topic probably produces the most disagreement among experts, with many arguing that most protection systems are sensitive to application - or that they just don’t provide adequate protection. Myths and mysteries are discussed under this topic, together with examples of past mistakes that have led to poor reputations for many systems.
Location & Date: To be arranged
CONCRETE REPAIR & PROTECTION
Getting it Right the Second Time!
A Two-Day Course which focuses on the latest advances and state-of-the-art-knowledge for the restoration of concrete
Description
Over the last decade, professional repair and protection of concrete structures has become recognized as a "stand alone" discipline requiring specialist knowledge and expertise. This course has been developed to cover the latest advances in materials and techniques and the current state-of-the-art.
The presenter's own experiences as a concrete materials consultant and a "troubleshooting" investigator will be used for many of the topics that will be covered over the two days. Various concrete deterioration mechanisms will be identified, together with the way in which failure to understand them can impact on the development of a repair and protection strategy.
Actual examples will be used to highlight failures, defects or deterioration that can often be caused by the selection of incorrect materials and techniques. Additionally, the program will examine the many advances in technology that have occurred over recent years, together with how they can provide considerable benefit to the concrete repair and protection industry - and ensure that we get it right the second time!
Who should attend
This course will be of special interest and a major benefit to all those involved in the design, specification, construction, repair and protection of reinforced concrete structures, including government agencies, specifiers, architects, engineers and consultants, inspectors and technicians, as well as the contracting team. The program will also be of interest to materials suppliers' sales and technical personnel and trainees.
Why you should attend
In today's business world, reducing risk and avoiding liability are key factors that should be of great concern to everyone. The topics covered within the program have been designed to facilitate learning from the current state-of-the-art, experiences of others and past mistakes that have often reached litigation stage.
Special features
A purpose-designed binder and a USB flash drive containing comprehensive information, photographs and technical data, will be provided to each participant. Participants will be encouraged to ask questions, provide comments, and share their own experiences and problems. The cost for both the binder and USB flash drive are included in the registration fee.
Format
Day 1 - registration/check-in will start at 8:00 a.m. with sessions to begin at 8:30 a.m. and adjourn at 4:30 p.m. Day 2 will commence at 8:30 a.m. and adjourn at 4:30 p.m. There will be a 15 minute mid-morning and afternoon break. Lunch is on your own from 12 noon to 1:00 p.m.
Program outline
Day 1
Registration and Coffee
Welcome and Introduction
What are the Problems? ~ This opening topic sets the scene by reviewing the major problems that affect the performance of concrete structures and a review of typical failure and deterioration mechanisms.
Cause Analysis ~ Case studies are examined where deterioration mechanisms were not understood - the results are highlighted.
Concrete Repair Failures ~ Case studies are used to illustrate repair strategy failures due to inappropriate materials selection, inadequate design and poor workmanship.
Understanding the Investigation Process ~ Key elements of condition assessments, investigation and monitoring programs, together with procedures, testing methods and techniques required to implement a repair and protection strategy - including the latest non-destructive testing methods, such as impact echo, ground penetrating radar and thermography. Case studies will be used to highlight how an effective investigation can be invaluable for the development of a repair and protection strategy.
Designing a Repair and Protection Strategy ~ Considerations for the design of a repair and protection project and the key components of a strategy.
Day 2
Repair & Protection Strategies - and their effect on electro- chemical compatibility ~ A variety of different techniques can be used for the repair and protection of concrete structures. However, the effect that each can have on residual corrosion activity is often not considered and the restored structure sometimes continues to deteriorate - often at a faster rate! In this topic, the various systems that are available are evaluated and their impact on the achievement of electrochemical compatibility is examined.
Modern Strengthening Techniques for Concrete Structures ~ The latest developments in materials and techniques for strengthening concrete - including exterior post-tensioning, fabricated jackets, fibre reinforced composite wrapping, supplemental elements, etc.
What are the Best Techniques for Concrete Removal and Substrate Preparation? ~ A discussion of equipment and techniques for concrete removal and substrate preparation.
Substrate Preparation and Bonding Agents - are they really necessary? ~ Experts' opinions often vary regarding the degree and type of substrate preparation that is required before concrete repair. Opinions also differ regarding whether bonding agents are necessary or, if they are to be considered, which type should be used. In this topic, some of the conflicting theories are examined and the concepts explained.
Spraying and Forming Repairs - what have we learned? ~ The latest materials and techniques for spraying and forming repairs are reviewed together with a summary of good and bad practices.
Restoration Case Studies ~ Examples and details of projects that used many of the repair and protection principles discussed over the course of the two days.
Date & Location: To be arranged - Please check back
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Getting it Right the Second Time!
A Two-Day Course which focuses on the latest advances and state-of-the-art-knowledge for the restoration of concrete
Description
Over the last decade, professional repair and protection of concrete structures has become recognized as a "stand alone" discipline requiring specialist knowledge and expertise. This course has been developed to cover the latest advances in materials and techniques and the current state-of-the-art.
The presenter's own experiences as a concrete materials consultant and a "troubleshooting" investigator will be used for many of the topics that will be covered over the two days. Various concrete deterioration mechanisms will be identified, together with the way in which failure to understand them can impact on the development of a repair and protection strategy.
Actual examples will be used to highlight failures, defects or deterioration that can often be caused by the selection of incorrect materials and techniques. Additionally, the program will examine the many advances in technology that have occurred over recent years, together with how they can provide considerable benefit to the concrete repair and protection industry - and ensure that we get it right the second time!
Who should attend
This course will be of special interest and a major benefit to all those involved in the design, specification, construction, repair and protection of reinforced concrete structures, including government agencies, specifiers, architects, engineers and consultants, inspectors and technicians, as well as the contracting team. The program will also be of interest to materials suppliers' sales and technical personnel and trainees.
Why you should attend
In today's business world, reducing risk and avoiding liability are key factors that should be of great concern to everyone. The topics covered within the program have been designed to facilitate learning from the current state-of-the-art, experiences of others and past mistakes that have often reached litigation stage.
Special features
A purpose-designed binder and a USB flash drive containing comprehensive information, photographs and technical data, will be provided to each participant. Participants will be encouraged to ask questions, provide comments, and share their own experiences and problems. The cost for both the binder and USB flash drive are included in the registration fee.
Format
Day 1 - registration/check-in will start at 8:00 a.m. with sessions to begin at 8:30 a.m. and adjourn at 4:30 p.m. Day 2 will commence at 8:30 a.m. and adjourn at 4:30 p.m. There will be a 15 minute mid-morning and afternoon break. Lunch is on your own from 12 noon to 1:00 p.m.
Program outline
Day 1
Registration and Coffee
Welcome and Introduction
What are the Problems? ~ This opening topic sets the scene by reviewing the major problems that affect the performance of concrete structures and a review of typical failure and deterioration mechanisms.
Cause Analysis ~ Case studies are examined where deterioration mechanisms were not understood - the results are highlighted.
Concrete Repair Failures ~ Case studies are used to illustrate repair strategy failures due to inappropriate materials selection, inadequate design and poor workmanship.
Understanding the Investigation Process ~ Key elements of condition assessments, investigation and monitoring programs, together with procedures, testing methods and techniques required to implement a repair and protection strategy - including the latest non-destructive testing methods, such as impact echo, ground penetrating radar and thermography. Case studies will be used to highlight how an effective investigation can be invaluable for the development of a repair and protection strategy.
Designing a Repair and Protection Strategy ~ Considerations for the design of a repair and protection project and the key components of a strategy.
Day 2
Repair & Protection Strategies - and their effect on electro- chemical compatibility ~ A variety of different techniques can be used for the repair and protection of concrete structures. However, the effect that each can have on residual corrosion activity is often not considered and the restored structure sometimes continues to deteriorate - often at a faster rate! In this topic, the various systems that are available are evaluated and their impact on the achievement of electrochemical compatibility is examined.
Modern Strengthening Techniques for Concrete Structures ~ The latest developments in materials and techniques for strengthening concrete - including exterior post-tensioning, fabricated jackets, fibre reinforced composite wrapping, supplemental elements, etc.
What are the Best Techniques for Concrete Removal and Substrate Preparation? ~ A discussion of equipment and techniques for concrete removal and substrate preparation.
Substrate Preparation and Bonding Agents - are they really necessary? ~ Experts' opinions often vary regarding the degree and type of substrate preparation that is required before concrete repair. Opinions also differ regarding whether bonding agents are necessary or, if they are to be considered, which type should be used. In this topic, some of the conflicting theories are examined and the concepts explained.
Spraying and Forming Repairs - what have we learned? ~ The latest materials and techniques for spraying and forming repairs are reviewed together with a summary of good and bad practices.
Restoration Case Studies ~ Examples and details of projects that used many of the repair and protection principles discussed over the course of the two days.
Date & Location: To be arranged - Please check back
PLEASE CHECK BACK FOR FUTURE COURSE UPDATES