Mechanical Properties of Wood Dust-Palm Kernel Shell Concrete Blend


Authors : Ihemegbulem Ezekiel. O

Volume/Issue : Volume 6 - 2021, Issue 11 - November

Google Scholar : http://bitly.ws/gu88

Scribd : https://bit.ly/3ILuBfh

This research presents the Mechanical properties of wooddust(sawdust)-Palm Kernel shell concrete blend. It provides the panacea to the limitation of Mechanical properties of Sawdust-Palm Kernel shell concrete blend, which is a concrete composite blend of cement, sawdust and palm kernel shell (PKS). The component materials utilized in this study are: Ordinary Portland Cement, wood dust dust, PKS and water. The physical index properties were carried out on the aggregates utilized in this study. Sawdust gave values of 564.28kg/m3 , 0.494, 34.68%, 2.72, 1.0 and 2.79 for the mean unit weight, mean specific gravity, mean percentage water absorption, finess modulus, mean coefficient of curvature(Cc) and mean uniformity(Cu) respectively. PKS gave relative values of 730.1kg/m3 , 1.67, 12.09%, 5.98, 1.38 and 2.69. Batching of materials was carried out volumetrically by virtue of the low bulk density and lightweightness of the component material. The blending of the aggregate materials and binder were manually done. A total of six(6) cubes measuring 150mm, six(6) numbers of cylinders measuring 150mm × 300mm and six(6) samples of solid beams of measuring 150mm × 150mm × 600mm were produced from blend ratios of 0.9:1:3:3 and 0.9:1:3:4 which corresponds with (water : cement : fine aggregate : coarse aggregate) to obtain the compression strength, split tensile strength and bending(flexural) strength respectively. The above blend ratio and water-cement ratio were adopted due to the high rate of water absorption of the constituent materials and to attain the required slump level and strength for light weight concrete blend. For the blend ratio of 0.9:1:3:3, the mean compressive strength, mean flexural strength, mean split tensile strength and mean static modulus of elasticity were 7.73MPa, 2.76MPa, 1.57MPa and 4.41GPa. The contemporary values for the blend ratio of 0.9:1:3:4 are 3.84MPa, 2.51MPa, 1.42MPa and 4.06GPa. The mean Poisson’s ratio ranges from 0.2 - 0.37. The shear modulus ranged from 1.48MPa – 1.84MPa. The mean flexural strength of wooddust-PKS blend beams ranged from 2.5MPa to 2.76MPa.

Keywords : Wood Dust, PKS, Cement, Plywood, Laminate, Composit

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