2. Experimental program
2.1. Materials and mix-design
OPC complying with BS 12:1989 [11] was used throughout. Chemical composition,
physical and mechanical properties of the cement are shown in Table 1.
Crushed granite stones and naturally occurring river-washed quartz sand are used
as coarse and fine aggregates respectively. ASTM sieve No. 4 (4.75 mm) was considered
as a demarcation between the two classes of aggregates.