Effectiveness of Palm Kernel Shell Ash Concrete Reinforced with Steel Fibres

OLOWE, Kayode Oluwafemi and WASIU, John and ADEBAYO, Victor Babafemi (2019) Effectiveness of Palm Kernel Shell Ash Concrete Reinforced with Steel Fibres. ABUAD Journal of Engineering Research and Development (AJERD), 2 (2). pp. 1-9. ISSN 2645-2685

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Abstract

The steadily increasing cost of cement has made construction very expensive in many countries of the world, coupled with the adverse effect of cement production on the environment. To solve these problems, studies have been made on various materials like Pozzolans which could be used as partial replacement for cement in concrete production. Palm kernel shell ash (PKSA) is the ash produced from burning of palm kernel shell thus, PKSA is used as partial replacement of cement in this study. This study investigated the effect of palm kernel shell ash (PKSA) as a partial replacement with ordinary Portland cement in high strength palm kernel shell ash concrete reinforced with steel fibres. The properties studied includes workability of fresh concrete, compressive strength, flexural tensile strength, and water absorption for hardened concrete. PKSA contents in mixes ranged between 0% and 50% by weight of cement and Steel fibre of 0.75% by volume of concrete was maintained in all mixes containing steel fibre. The use of palm kernel shell ash (PKSA) has advantages like; reduction in cost of concrete, solving environmental pollution problems as well as reduced the number of landfill areas required for disposing the PKSA. The results indicate that the inclusion of steel fibre into concrete contained ordinary Portland cement concrete or PKSA, improved the tensile strength properties. Further, it was observed that increase in percentage of PKSA led to a corresponding reduction in both flexural and compressive strength when compared with control concrete. Since the strength reduced with further addition of PKSA from 25%, it is recommended that optimum replacement level of ordinary Portland cement by Palm kernel shell ash is 25% for good compressive and tensile properties.

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