THE FLEXURAL STRENGTH OF BASALT CONCRETE MIX COMPARED WITH GRANITE CONCRETE MIX

Abstract

This work aims at comparing the flexural strength of basalt concrete mix with granite concrete mix. A total of 24 concrete beam specimen of breadth 100mm, depth 100mm and length 500mm were made in the laboratory. The British standard mix design method was used to obtain four different mix designs for batching the ingredients comprising ordinary Portland cement, river sand, water, granite and basalt with two mix designs each corresponding to basalt and granite samples. The specimens were cured for 28 days and tested for flexural strength. The results show higher values of flexural strength for basalt mix compared to granite samples by five percent. The results show that basalt aggregates are suitable coarse aggregates for concrete mix.