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Cost Optimization of Sandcrete Blocks through Partial Replacement of Sand with Lateritic Soil

Joshua, Opeyemi and Lawal, P. O (2011) Cost Optimization of Sandcrete Blocks through Partial Replacement of Sand with Lateritic Soil. Epistemics in Science, Engineering and Technology, Vol. 1 (2). pp. 89-94.

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This work finds a way in which lateritic soil within Ota, Ogun State of Nigeria could be used in the production of hollow sandcrete blocks. This replacement is intended to develop more economic sandcrete blocks since the cost of lateritic soil in Ota is much less than the cost of the conventional fine aggregate used in the production of sandcrete blocks without compromising the intergrity of the blocks. It was deduced from literatures that inclusion of lateritic soil in sandcrete block production results in a lesser quality blocks. However, this work found the maximum permissible replacement that still makes the blocks to be within the recommended standard. The blocks were produced with each lateritic soil sample from different sources replacing sand in steps of ten percent to 60% and their compressive strengths determined and compared with that of a standard sandcrete block to check for the acceptable percentage replacement. In the compressive strength test, 72 numbers of 225 x 225 x 450mm hollow laterised sandcrete block sizes were produced, cured and crushed to determine their twenty-eight-day compressive strength. Cost analysis was performed discovered that the inclusion of the lateritic soil saves the cost of production by 11.89%. This percentage replacement can be recommended to the block moulding industries within Ota with a view to reducing the production costs of the blocks.

Item Type: Article
Uncontrolled Keywords: Economic block, laterized brick, laterized sandcrete block, lateritic soil.
Subjects: T Technology > TH Building construction
Depositing User: Mr. Opeyemi Joshua
Date Deposited: 25 Jun 2011 23:02
Last Modified: 13 Dec 2011 21:13

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