Elastic Properties of Polymer Modified Steel Fibre Reinforced High Strength Concrete

Abstract:

The paper deals with the experimental and theoretical results of elastic constants of polymer modified high strength concrete with high fibre volume fraction. To evaluate elastic properties of this composite system, compressive and flexural strengths were obtained experimentally. Elastic properties such as modulus of elasticity and Poisson’s ratio are first obtained based on experimental results. Simplified equations based on micromechanics, and solid mechanics theories are utilized for the evaluation of elastic properties of polymer modified randomly oriented short steel fibre reinforced high strength concrete. The micromechanics equations for the modulus of elasticity and the Poisson’s ratio are based on the fibre volume fraction and the elastic moduli of the fibre and polymer modified concrete matrix. The existing empirical equations are also used to obtain elastic constants. These equations are applied in the full range of fiber volume fraction (1% to 10%). The comparison of experimental results with theoretical values shows the good agreement with each other. The novelty of the present paper is that the modulus of elasticity of this composite system is obtained experimentally using four point bending test and the Poisson’s ratio is obtained as a function of flexural and compressive strengths with excellent accuracy for the first time.

• Periodical: Key Engineering Materials (Volume 889)
• Pages: 163-170
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.889.163
• Online since: June 2021
• Authors: Praphulla K. Deshpande*, Keshav K. Sangle, Yuwaraj M. Ghugal
• Keywords: High Strength Concrete, Micromechanics, SBR Latex, Steel Fibre, Strengths

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