Effects of board density and mixing ratio on the physio-mechanical properties of cement-bonded particle board produced from Ceiba pentandra Sawdust

Abstract

The study evaluated the physical and mechanical properties of cement–bonded particleboards produced from the sawdust of Ceiba pentandra. The production variables investigated were two board densities (1300kg/m3 and 1200kg/m3) and three different mixing ratios (1:2, 1:2.5 and 1:3). Mean values of Water absorption (WA) and Thickness swelling (TS) after immersion in cold water for 24 hours ranged from 7.64 % to 9.53 % and 2.36 % to 2.99 % respectively. Board density at 1300kg/m3 and mixing ratio 1:3 had the highest average Modulus of Rupture (MOR), Modulus of Elasticity (MOE) and Impact Bending (IMB) of 4.32 Nmm-2, 1262.03 Nmm-2 and 12.70J/M2 respectively. The board density had a significant influence (P < 0.05) on the physical and mechanical properties of the boards. Based on the result, 1300kg/m3 board density and 1:3 mixing ratio produced the best board for mechanical properties and dimensional stability and can be used for several structural applications.Keywords: Ceiba pentandra, Sawdust, Board density, mixing ratio, physio-mechancial propertie

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