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Comparison of Flexural Strength Values of Palm Kernel Shell Concrete
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This work seeks to investigate and compare the differences in measurement of flexural strength of palm kernel shell concrete, using direct and indirect methods (beam and splitting cylinder specimen). The Palm kernel shell (PKS) was subjected to various physical tests and values obtained are as follow; specific gravity of PKS 1.3, Aggregate impact value 10.23.The Concrete was cast using two mix ratios 1:1.5:3 and 1:2:4. The concrete cubes, cylinders, and beams were crushed at 7, 14 and 28days in other to determine the compressive strength and flexural strength of the concrete for the various mixed. The 28th day compressive strength was 12.30N/mm2 and 20N/mm2, for the two mixed ratio respectively. The 28th day flexural strength is 2.03N/mm2 and 1.10N/mm2 for the beam and cylinder specimen respectively. The student t-test showed that there is no significant difference between the tensile strength measured using direct and indirect methods.
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