Effects of Waste Glass Powder and Cassava Peel Ash on Compressive Strength of Concrete
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Date
2025
Journal Title
Journal ISSN
Volume Title
Publisher
Proceedings of the Third International Civil Engineering Conference (ICEC, 2024)
Abstract
This study investigates the effects of incorporating glass waste powder (GWP) and cassava peel ash (CPA) as
partial replacements for cement on the compressive strength of concrete. A total of 294 concrete cubes were
prepared with varying proportions of GWP and CPA (0%, 5%, 10%, 15%, 20%, 25% and 30% replacement
levels). Both materials were characterized by X-Ray Fluorescence (XRF) analytical method. The slump of fresh
concrete with WGP and CPA of 0, 5, 10, 15, 20, 25 and 30% respectively by weight of cement was investigated
in accordance with standard procedures. The results show that the compressive strength of concrete increased
with the addition of GWP and CPA up to a certain replacement level. The 28 days compressive strength of concrete
with 15% WGP/CPA content was 16.4 % more than normal, while that of concrete with 20% WGP/CPA content
was 11.9 % less than normal. The optimal replacement levels for GWP and CPA were found to be 15% and 5%,
respectively. The study concludes that the use of GWP and CPA as partial replacements for cement can improve
it compressive strength, it sustainability and reduce the environmental impact of concrete production. The results
of slump tests of different percentages of CPA/GWP as a partial replacement of cement in concrete production
were observed for all proportion ranging between 12 – 41mm. However, 20% GWP/CPA replacement was
considered as optimum for structural concrete.
Description
Keywords
Waste glass Powder, Cassava peel ash, Specific gravity, Slump, Compressive strength