MECHANICAL CHARACTERISTICS OF SELF COMPACTING CONCRETE USING LATERITE STONE AS COARSE AGGREGATE

Abstract

Two types of SCC mixtures were made and compared, the first using crushed river stones and the second using crushed laterite stones where Portland composite cement (PCC) was used as the main cementitious material in this present study. PCC content, superplasticizer content, w/c ratio and fine aggregates fractions and volumes were kept fixed at same value for both mixtures. Testing of SCC in fresh and hardened conditions was carried out. At fresh state, slump flow and T500 of the two SCC mixture types had the similar shape that properly spread in all directions by own weight and met the SCC mixture requirements of ENERFAC. Adequate compaction result of SCC without help of vibration and tamping rod effort was shown by hardened cylindrical specimens where there were no large voids and no segregation appeared on the specimen surface. The compressive-strain stress relationship was almost same in both mixes as well as peak strain value at the age of 90 days was similar for both SCC mixtures. Physical properties which include compressive strength, elasticity and indirect tensile strength showed that SCC containing crushed laterite stone was slightly better compared to that used crushed river stone.