Tag Archives: Concrete

Seismic retrofit of historic courthouse with precast concrete shear walls

The four-storey North Bay Courthouse building in Ontario was retrofitted with a new lateral force-resisting system (LFRS). The interior steel framing and slab connections were structurally strengthened to transfer seismic loading to 13 full-height, reinforced precast concrete shear walls around the building perimeter. Further, cracked masonry joints were repointed, damaged masonry units were replaced, and an elastomeric coating was applied over the entire wall surface.

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Demystifying self-consolidating concrete

Self-consolidating concrete (SCC) is designed to flow and synthesize on its own. Even though the technology has advanced, it retains an air of mystery. This article provides an overview of SCC and explains its many benefits, design, chemistry, plastic performance, production, specification, testing and certification, and construction best practices.

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