Abstract
In this chapter, geopolymer concrete (GPC) bond with deformed reinforcing steel bars is investigated. Two types of concrete are compared: ordinary Portland cement concrete and GPC. Two GPCs are used: a heat-cured low-calcium fly ash GPC and an ambient-cured ground granulated blast furnace slag GPC. Bond strength was investigated by conducting pullout tests on ribbed bars with a nominal diameter of 12mm using the standard RILEM pullout test. The specimens were tested at various ages ranging from 1 to 28 days. Compression tests were performed at all ages as well. The experimental results obtained are used to recalibrate the existing model adopted by fib Committee allowing correlating the steel concrete bond strength to the mean compressive strength of concrete.
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