Effect of Supplementary Cementitious Materials on Properties of Self Compacting Concrete

To avoid various environmental issues, supplementary cementitious materials (SCM) such as metakaolin, limestone powder, silica fume, rice husk ash, fly ash, ground granulated blast furnace slag (GGBS), marble powder and chalk powder are added to self compacting concrete (SCC). This paper attempts to review the effect of these SCMs have on rheological, mechanical and durability characteristics of SCC. The review shows that different SCMs have varied effects on SCC properties. Silica fume, rice husk ash and metakaolin reduce workability but improve mechanical and durability properties. Fly ash, marble powder, limestone powder require less amount of superplasticizer when compared to GGBS, chalk powder and rice husk ash. It can also be seen that the addition of mineral admixtures in optimum quantity helps to improve the packing density of SCC particles resulting in best performance in both fresh and hardened state.