Many buildings with unbonded post-tensioned systems require expensive repairs owing to corrosion of the tendons. This Update presents the findings from a study recently conducted by IRC, in partnership with Canada Mortgage and Housing Corporation (CMHC), on the effectiveness of three new techniques for assessing the condition of these tendons. Full story
The half-cell potential measurement is an electrochemical technique commonly used by engineers to assess the severity of corrosion in reinforced concrete structures. This Update explains how various factors can affect the reliability of the data obtained. Full story
The main types of bonding agents used in construction are latex emulsions and epoxies. This Update reviews the properties of each and guides the user and the specifier on their advantages and limitations. Full story
Durable concrete structures can be achieved only through careful attention to many details. This Update discusses the key determinants of durability for both new construction and repair. Full story
Masonry is a popular cladding for buildings because of its high aesthetic value, its durability and its low maintenance requirements. Lateral support for masonry cladding is usually provided by metal ties, which are subject to compressive and tensile forces, displacement caused by in-plane movement of the cladding, and corrosion. This Update discusses the corrosion of ties. Full story
