Table 2: Mechanical properties of samples.

Sample	1	2	3	4	5	6	7
% fly ash	0	10	20	30	40	50	NA
Specific gravity	1.57	1.56	1.55	1.54	1.54	1.53	2.82
Bulk density kN/m3	11.0	10.8	10.6	10.4	9.87	9.7	14.9
Water absorption %	11.9	14.8	16.3	17.8	18.8	21.3	0.66
Impact Value	29.8	28.7	28.3	27.8	30.6	45.2	30.1
Crushing Value	1.48	1.47	1.51	1.53	1.34	1.13	2.68