Over the last decade, concrete rehabilitation has become recognized to be a “stand alone” discipline requiring very 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 for the repair protection of concrete structures. The presenter’s experiences as a concrete materials consultant and a “troubleshooting” investigator will be used for many of the topics that will be covered. Various concrete deterioration mechanisms will be identified, together with the way in which failure to understand them can impact on the development of a concrete restoration strategy.
Case studies will be used to highlight failures, defects or deterioration that can often be caused by the selection of incorrect materials and rehabilitation techniques. |
To identify the many advances in technology that have occurred over recent years and how they can provide considerable benefit to the concrete repair and protection industry - and ensure that we get it right the second time!
To facilitate learning from the current state-of-the-art and the experiences of others.
To identify many types of mistakes that have often caused major disputes or conflicts and have usually resulted in costly remedial work. |
Mr. Paul Jeffs
As principal of PJ Materials Consultants Limited, Paul Jeffs specialises in masonry and concrete structures and provides technical advice at all stages of construction or restoration and conservation. Prior to forming the operation in 1989, he was employed for over 25 years within the construction industry around the world. For the last eighteen years of this time he was employed by a multi-national group headquartered in the United Kingdom which manufactured a vast range of materials and products for construction-related industries. In 1976 he transferred from England to the Middle East, living for three years in Bahrain and Iran. During this time he was involved in many projects throughout the Arabian Gulf, including Saudi Arabia, Kuwait, United Arab Emirates and Qatar. In 1979 he moved to Japan and established a regional base from where he became involved in projects throughout South East Asia, including the Philippines, the Republic of Korea, Hong Kong, Taiwan, Indonesia, Singapore and Malaysia. Prior to emigrating to Canada in 1982, he was also involved in construction projects in South Africa and India.
Paul is a member of the American Concrete Institute and the Canadian National Research Council’s Working Party on Repointing Mortars. He is a past director of the Concrete Restoration Association of Ontario and 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 has also served as an associate member of the Canadian Standards Association’s S-413 Technical Committee for Parking Structures, as a member of the A-266 Concrete Admixtures technical committee and as a member of the Ontario Ministry of Transportation's Technical Advisory Committee which developed provincial standard specifications for concrete restoration.
Paul is a lecturer for the Continuing Technical Education Division of Dalhousie University and has presented for many organizations, such as the National Capital Commission, the Canadian Dam Association and the Canadian Society for Civil Engineering. He provides training courses and technical seminars on such topics as Restoration, Reconstruction & Maintenance of Restoration& Conservation of Heritage Structures & Older Buildings, Modern Concrete Materials & Practices, Concrete Repair & Protection; and Designing, Specifying & Constructing Concrete Slabs on Grade. He has been a guest lecturer at several Canadian universities, he has authored and presented papers at many national and international conferences and is a regular presenter of technical training courses in the Middle East. |
DAY ONE
INTRODUCTION TO CONCRETE REPAIR
- Why understanding the difference between cause and effect is important - case studies
- What are the problems? – failure and deterioration types and mechanisms
- Why do concrete repairs often fail? - materials - methods - design - combination effect
DAY TWO
THE INVESTIGATION AND STRATEGY DEVELOPMENT PROCESSES
- Understanding the investigation process - non-destructive testing - troubleshooting - case studies
- Designing a concrete repair and protection strategy - key design considerations and strategy components
- Planning a concrete restoration project - specification development - bid documents and process
- Restoration Strategies and their effect on electrochemical compatibility - rebar treatments - waterproofers - chloride extraction - realkalization - cathodic protection - metallizing - sealers - embedded anodes - corrosion inhibitors
DAY THREE
STRENGTHENING, REMOVAL, PREPARATION, BONDING & CRACK REPAIR
- Modern strengthening techniques for concrete structures - exterior post-tensioning - fabricated jackets and collars - composite wrapping - supplemental elements
- What are the best techniques for concrete removal and substrate preparation? - hand and mechanically operated equipment
- Substrate preparation and bonding agents - are they really necessary?
Crack repair methods, materials and techniques - routing and sealing - injection - vacuum impregnation
DAY FOUR
JOINT REPAIR, CONCRETE REPAIR MATERIALS & APPLICATION PROCEDURES
- Joint repair techniques and materials
- Concrete repair materials - cement-based - resin-based - properties - benefits and disadvantages
- Trowelling, spraying and forming repairs - what have we learned? - past problems - new techniques
DAY FIVE
RESTORATION CASE STUDIES, CONCRETE PROTECTION, MAINTENANCE & MONITORING
- Restoration case studies - material selection - low pressure grouting - underwater repairs - slab replacement, etc
- Protecting your Investment - sealers - coatings - membranes
- Preventive maintenance & monitoring programmes
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