And found that the best ratio is the ratio of cockle shells instead of sand with 90 percent to the highest compressive strength of 78.02 kg / cm 2, the curing time of 28 days through the TIS. 57-2530. and the density of 1505 kg / m 3 did not meet the standards. TIS. 1505-2530 However, the water absorption of 10.89 benchmark
TIS. 57-2533
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