Abrasion resistance and mechanical properties of Roller Compacted Concrete with GGBS

Abstract

In this experimental study, seven different mixtures of Roller Compacted Concrete (RCC) were adopted in which cement was partially replaced by six kinds of replacements (10%, 20%, 30%, 40%, 50% and 60%) of Ground Granulated Blast Furnace Slag (GGBS). The main objective of this experimental work was to investigate the effect of GGBS on the mechanical properties and abrasion resistance of RCC. Flexural, compressive, split tensile strength and abrasion resistance tests (Cantabro test and abrasion resistance with rotating cutter test) were conducted for the ages of 3days, 7days, 28days and 90days of curing. The strength values of RCC specimens were decreased for 3days when GGBS content increased. But at the age of 7days and 28days the strengths were considerably higher than control mix concrete up to 50% replacement of GGBS. Beyond 28days, the strength increases with the presence of GGBS up to 60% of replacement level. Also it was concluded that increasing GGBS content has increased abrasion resistance of RCC at all replacement levels. On the other hand there was a strong correlation exists between the GGBS content, weight loss with compressive, flexural and split tensile strength.