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Plants and Environment

E-ISSN: 2582-3744
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2020, Vol. 2, Issue 2

Optimization of hollow blocks production from sawdust waste from Khaya senegalensis (Desr.) A. Juss. and Anogeissus leiocarpus (DC.) Guill. & Perr., as partial replacement for sand

Author(s): David Oriabure Ekhuemelo*, Victoria Alfa and Emmanuel Tersugwue Tembe

Affiliation: *Department of Forest Production and Products, University of Agriculture, Makurdi, Benue State, Nigeria

Abstract: This study evaluated the properties of hollow blocks produced from Khaya senegalensis and Anogeissus leiocarpus sawdust as a partial replacement for sand. The study was carried out at Federal University of Agriculture Makurdi (FUAM), Nigeria. Sawdust was collected from Timber Shed in Wurukum, boiled and dried. Mortal was prepared using mixed ratio of 1:6 (cement to sand). River sand was successively replaced with sawdust at various replacement levels of 0, 2, 4, 6 and 8 percentages, respectively. Block samples produced were subjected to compressive strength, density and water absorption test. Results showed that bulk density of blocks from each sawdust replacement levels decreased with an increase in the percentage of sawdust replacement from 1,111.400 kg m-3 to 1,329.00 kg m-3. Mean water percentage absorption was least (11.13% and 11.34%) in 4% sawdust replacement level for Anogeissus leiocarpus and 2% Khaya senegalensis, respectively. The highest compressive strength (3.32 N mm-2 and 3.42 N mm-2) was recorded for 2% sawdust replacement level. The best sawdust replacement level in this study was 2% for both Annogeissus leiocarpus and Khaya senegalensis and is therefore recommended for non-load bearing walls.

DOI: 10.22271/2582-3744.2020.jun.63

Pages: 63-68 | Views: 273 | Downloads: 189

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