Experimental Investigation On The Use Of Sawdust As Partial Replacement Of Sand On Concrete Production

Sawdust concrete technology was first introduced in industrialized nations, where it was used as a flooring and wall system. Sawdust and clay have been used to build houses in the West Indies. Without any prior treatment, sawdust may be used to replace sand in concrete mixes. The weight of concrete may be reduced by using sawdust, which also solves the problems of a lack of raw materials, safe waste disposal and cost efficiency. In this research partial replacement of sawdust with sand is investigated. Different strength of concrete grades with sawdust ratios of 0%, 5%, 10%, and 15% were studied with their physical and mechanical characteristics. The results of this study show that compressive strengths of C16/20 concrete grade mixes sawdust substitution up to 15% meet the ACI 301 cylindrical compressive strength compliance criteria. Sawdust replacements satisfy cylindrical compressive strength up to 10% for C30/37, C45/55, and C60/65. The slump of the concrete was decreased by partially replacing sand with sawdust, and the concrete's density was lowered as well. The tensile strength of concrete using sawdust as partial replacement of sand improved by up to 5%, indicating that the sawdust acts as a fiber in the concrete.

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