Effect of aggregate max size on the rheological properties of self consolidating concrete

Abstract

The effects of aggregate size and supplementary cementitious materials (SCMs) on the rheology of self -consolidating concrete (SCC) were studied in this paper. Two main concrete mixtures with different maximum aggregate sizes were prepared and investigated. The first mix had a maximum size aggregate of 5 mm and the second mix was with 20 mm max size aggregates. All mixes incorporated different dosages of Ground granulated blast furnace slag (GGBS). The rheology of all mixes investigated was measured over 2 hour time period. It was found that the size of aggregates and GGBS dosage have influence on the yield stress of studied concrete mixes.

Keywords: Maximum size aggregate; Rheology; Self Consolidating Concrete