Comparative Strength Analysis of Normal Weight and Palm Kernel Shell Reinforced Concrete Beams for Sustainable Development

Abstract

Reduction in self-weight of Palm Kernel Shell Concrete (PKSC) over Normal Weight Concrete (NWC), reduces the amount of cement needed for construction, this is accompanied by reduction in CO₂ emission associated with the production of cement: This will have reduction effect on the greenhouse, a major cause of climate change. This study carries out the comparative analysis of the strength characteristics of NWC and PKSC beams produced from four concrete mixes of 0%, 20%, 40% and 60% partial replacement of crushed granite by palm kernel shell (PKS).  From each concrete mix, two beams were cast: one with shear reinforcement of 200mm spacing, while the other one without shear reinforcement, making total of eight beams. From the study, the PKS concrete beams were 3.6%, 11.24% and 15.64% lighter than the NWC beams for 20%, 40% and 60% partial PKS replacement. The study shows that reinforced concrete beams produced from 20% and 40% partial replacement of crushed aggregate by PKS have the potential of being used for structural purposes in low cost buildings.

Keywords: Palm Kernel Shell Concrete, Normal weight concrete, Palm kernel shell, Strength characteristic, Cement.