keywords: Blast loading, coconut fibre, dynamic response, lathe steel
This work is a comparative analysis of the blast resistance capability of coconut fibre composite concrete (CFCC) and lathe steel waste composite concrete (LSWCC) using finite element numerical analysis. The static compressive, splitting tensile and flexural strength of CFCC and LSWCC were experimentally determined using a range of 0 to 2% by volume of fibre reinforcements. Both CFCC and LSWCC exhibited optimum strength characteristics at 1.5% of fibre reinforcements. The dynamic numerical analysis shows clearly that both LSWCC and CFCC reduced the displacement considerably compared to plain concrete and more importantly, LSWCC performed better than CFCC in displacement reduction. It is also noted that the peak values of acceleration, velocity, shear force and moment occurred at 1.5% volume fibre content for both LSWCC and CFCC. However, LSWCC exhibited more energy absorption capacity than CFCC as reflected in the acceleration, velocity, moment and shear resistances.
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