KJSET Volume. 3, Issue 1 (2024)

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Contributor(s)

H. Ubale & M. M. Lawan
 

Keywords

Ordinary portland cement self-compacting concrete waste metalized plastic fibre guinea corn husk ash super-plasticizer
 

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Influence of waste metalized plastic fibers and guinea-corn husk ash on strength properties of self-compacting concrete

Abstract: Green concrete is a form of eco-friendly composite material that is manufactured using waste material as one of its components. Guinea corn husk ash (GCHA) and waste metalized plastic (WMP) are all by-products that are nuisance to the environment. It is important to understand their influence on workability and mechanical properties of self-compacting concrete (SCC). In this study, the influence of waste metalized plastic fibre (WMPF) and Guinea corn husk ash (GCHA) on workability and mechanical properties of SCC was investigated. The concrete was designed to attain a characteristic strength of 40 N/mm2. The chemical composition of the GCHA was determined by X-Ray Fluorescence (XRF) method. Properties studied include slump flow test on fresh concrete in addition to compressive strength, direct tensile strength and microstructure of the hardened concrete. Seven concrete mixtures containing 0% - 1.5% WMPF of size 2mm width by 20mm length were cast. A second batch of concrete mixes containing the same fibre dosages and 5% GCHA as substitute of Ordinary Portland cement (OPC) were also cast. All concrete cast were cured and tested for 7-days, 28-days and 91-days for both compressive and direct tensile strengths. The result show that there was a reduction of slump flow due to inclusion of WMPF and GCHA in all the concrete mixes. Also, the compressive strength of both mixes reduced with the increase in the fibre content. There was an enhancement of the direct tensile strength due to inclusion of WMPF. The compressive strength of 5% GCHA-based concrete reduced at 7 and 28 days curing period and witnessed a high gain of strength at 91-days curing period. In conclusion, the compressive strength of both OPC-based and 5% GCHA-based concretes without fibre were found to be 52.42 N/mm2 and 58.27 N/mm2 respectively at 91 days of curing.
 
 
 

KIU Journal of Science, Engineering and Technology (KJSET) -- ISSN: 2958-0641, 2025 | All Articles