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The Influence of Thickness and Mesh Orientation on The Impact Resistance Performance of Geogrid Reinforced Oil Palm Shell Concrete |
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PP: 1141-1159 |
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doi:10.18576/amis/180519
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Author(s) |
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Zakaria Che Muda,
Mohamed Hafez,
Md. Asraful Alam,
Ghazal Malik,
As’ad Zakaria,
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Abstract |
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| The utilization of agricultural waste recycling, using oil palm shell lightweight aggregate in concrete, has been developed as a green product for the construction industry. This innovation aims to mitigate environmental pollution and promote sustainable practices in industrial waste management. This research paper investigates the effect of thickness and geogrid orientation on the impact performance of lightweight oil palm shell concrete slab reinforced with geogrid under low-velocity impact projectile. Slabs of dimensions 300mm x 300mm and 40mm thickness are subjected to a drop-weight impact test using a self-fabricated rig and a 1.25 kg steel ball dropped from a height of 1.0 m. The studys main objectives are to analyze the relationship between impact energy, crack resistance, crack resistance ratio, and impact residual strength ratio against the thickness and the geogrid orientations for various OPS mix variants. The highest impact performance is the 0.45OPS variant with geogrid followed by 0.50OPS and then 0.60OPS. The results indicate that an increase in thickness leads to significant improvements; however, the change in geogrid orientation from the cross direction (CD) to the main direction (MD) had a slight improvement in the impact behavior of the slab. The linear and bi-linear equations were proposed for different under-service and ultimate impact behavior against thickness for various OPS mix variants without and with geogrid. The ultimate condition has a higher number of segmental failure zones as compared with the service condition. The geogrid mesh bridges the micro-cracks at service conditions and major cracks at the failure phase, preventing the slab from totally collapsing.
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