Concrete Repair and 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
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.
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.
Day 1 - registration/check-in will start at 8:00 a.m. with sessions to begin at 8:30 a.m. and adjourn at 4:00 p.m. Day 2 will commence at 8:30 a.m. and adjourn at 4:00 p.m. There will be 15 minute mid-morning and afternoon breaks, and a light lunch will be provided in the classroom on both days during a half hour break. When registering, please indicate if you have any food allergies.
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.
Repair & Protection Strategies - and their effect on electrochemical 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.
Paul Jeffs is an independent consultant who, for over 25 years, has specialized in providing technical advice and consulting services for the design, construction, restoration and protection of concrete and masonry structures - with particular emphasis on trouble-shooting. He has considerable experience with the investigation of concrete and masonry structures. Prior to forming PJ Materials Consultants Limited, he was employed for over 25 years within the construction industry around the world. Paul has served on the Canadian Standards Association Technical Committee (Associate) and the High Performance Sub-Committee for New Parking Structures (CAN/CSA S-413); he also served on the CSA 266 series of Admixture standards, and is a past director of the Concrete Restoration Association of Ontario. He served as a member of the Technical Advisory Committee to the Ontario Ministry of Housing for the deterioration and repair of existing parking structures, he was a member of the Ontario Ministry of Transportation technical advisory committee for the development of restoration standards and is a member of the National Research Council's Working Group on Repointing Mortars. He has provided materials related expertise as a consultant for numerous industries and has authored many technical papers.
Paul provides courses across Canada on such topics as durable concrete mix design and construction, concrete and masonry structure condition assessments, concrete repair and protection, the restoration of heritage and masonry structures and the design and construction of concrete slabs on grade. He has also regularly presented public and in-house courses in the Middle East. Paul has been a guest lecturer for several Canadian universities, the Canadian Society for Civil Engineering, the Canadian Dam Association, a speaker at many conferences and has authored or co-authored numerous technical articles.