Self-Consolidating Concrete Solves Challenging Placement Problems

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Title: Self-Consolidating Concrete Solves Challenging Placement Problems

Author(s): Michel Lessard, Brian Salazar, and Caroline Talbot

Publication: Concrete International

Volume: 25

Issue: 12

Appears on pages(s): 80-81

Keywords: Pumping; segregation; bleeding; reinforcement congestion

Date: 12/1/2003

Abstract:
The new terminal at Pearson International Airport in Toronto, ON, incorporated 180 hollow steel composite columns that were 101 ft (31 m) tall. A dog bone plate, coupled with the airport’s restriction of cranes above the upper terminal level, led the concrete team to pumping the concrete from the bottom of the column. Self-consolidating concrete (SCC) appeared to be the best choice for this process; the concrete had to be homogenous and lack bleeding and segregation.