Improving the Mechanical Properties of Interlocking Blocks Using Bio-waste materials

Abstract

The objective of this research aimed to reduce the weight of interlocking blocks using bio-waste materials and condition them to reach the properties according to the TCPS 602/2547 standard for non-load baring interlocking blocks and further develop them as energy efficient construction material. The research methodology began with producing soil-cement interlocking blocks using Type 1 Portland cement and water then adding 5 types of bio-waste materials including paper, coconut coir dust, straw, husk and fine husk into the mixture for the experiment. The properties of the interlocking blocks were tested according to TIS 109-2517 which includes water absorption, dry density and compressive strength. Research results found the formula for interlocking block improved with fine husk and the ratio by weight between Portland Cement Type 1: soil: fine husk of 1:2:0.5 at the moisture content of 14.29% resulted in interlocking blocks with the standard properties for non-load baring interlocking blocks. The resultant interlocking block produced has the compressive strength of 3.6 MPa, absorption capacity of 245 kg/m3, dry density of 1,286 kg/m3 and weighs 27.06% less. The result of the research concluded that improving interlocking blocks with fine husk produced light weight blocks with proper engineering properties according to standard criteria and therefore further development of the material as energy efficient construction material was appropriate.