Abstract:
This research aims to study compressive strength of lateritic soil mixed with calcium carbide residue (CCR) and bagasse ash (BA) as non-bearing interlocking blocks. Binder (B) was the mixture of CCR and BA. The CCR is a by-product from the acetylene gas factory in Nakhon Pathom. The BA is a waste from sugar industry in Nakhon Ratchasima. This research studied the influence of laterite soil to binder ratios (soil:B), the CCR:BA ratios, curing time and number of wet-dry cycles (C). It was found that For ground B, the unconfined compressive strength (UCS) of laterite soil mixed with GCCR and GBA greater than the requirement standard as standard non-bearing interlocking blocks standard (TIS. 58-2533) (2.5 MPa) was soil:B ratio of 90:10 and GCCR:GBA ratios of 100:0, 90:10, 80:20, 70:30 and 60:40. For unground B, the UCS of laterite soil mixed with CCR and BA greater than the requirement standard was soil:B ratio of 90:10 and CCR:BA ratios of 70:30. The UCS of laterite soil mixed with CCR and BA and of laterite soil mixed with GCCR and GBA were constant with increasing in C until C was 3 cycles. When the C was greater than 3 cycles, the UCS of sample decreased for all mix ingredient. The water absorption and weight loss of sample were constant as C increased until C was 3 cycles. Then the water absorption and weight loss of sample increased significantly as C increased. CO2 emissions content of laterite soil mixed with CCR and BA and laterite soil mixed with GCCR and GBA was lower than that of laterite soil mixed with cement about 94.14 and 75.40 %