A Study on the Simplified Equation for the Young's Modulus of Concrete Reinforced Using Carbon Nanotubes (CNT)

Author(s): Nakul Misra and Dr. Gaurav Shukla

Abstract:

This research study examines finite element modeling of Carbon Nanotube (CNT) reinforced concrete matrices for three concrete grades: M40, M60, and M120. A Representative Volume Element (RVE) was utilized, and a one-eighth model of the CNT-reinforced concrete matrix was simulated using the finite element analysis (FEA) software ANSYS. Finite element modeling simulations accurately duplicated the CNT reinforced concrete matrix by adopting random orientations of CNTs with nine fiber volume fractions ranging from 0.1% to 0.9%. The longitudinal and transverse Young’s modulus of elasticity of the CNT reinforced concrete was determined by model evaluations. The graphical representations of different fiber volume fractions and concrete grades provided a simplified equation for determining Young's modulus. It also capitalized on the observation that the concrete grade does not substantially influence the CNT reinforced concrete matrix. Results demonstrate that the inclusion of CNT enhances the stiffness of concrete, with the new equation strongly correlating with empirical results.

Keywords: Carbon Nanotubes (CNT), Concrete, Elastic modulus, Representative Volume Element (RVE), Reinforced Concrete

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