INTERNATIONAL JOURNAL OF AGRICULTURAL TECHNOLOGY

Volume 14, No. 07, Month DECEMBER, Year 2018, Pages 2229 - 2240

Effect of para rubber latexand coir on compressive strength, water absorption and volumetric change of adobe brick

Wongpa, J. and Thongsanitgarn, P.

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The adobe brick that made from soil in Chanthaburi province, Thailand was developed and combined with para rubber latex and coir for environmentally sustainable development. Water content was fixed at a ratio of 0.4 by weight of soil for all mixtures. This amount of water was suitable for mixing and molding of adobe brick. The para rubber latex was added to the traditional mixture at the ratios of 5, 10, 15, and 20 percent by weight of water, respectively. Coir was added as reinforcement of soil structureat 1.0 percent by weight of soil. The compressive strength, water absorption, and volumetric change of adobe bricks were investigated at the ages of 28 days. The results showed that the mixtures containing para rubber latex and no coir gave an outstanding property in dissolution resistance by water. All samples were remained in shape after 28 daysof water immersion. While the traditional mixture and mixtures with coirwere dissolved within 24 hours. Moreover, the mixture with 15 percent of para rubber latex gave the highest compressive strength, which was 1.58 MPa compared to 0.92 MPa of traditional adobe brick. It could be concluded that para rubber latex can improve compressive strength of adobe brick. In addition, it was found that mixture containing para rubber latexand coir showed lower volumetric change than the traditional adobe brick.

Keywords

Adobe brick, Para rubber latex, Coir

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