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Mechanical behavior of crumb rubber concrete under axial compression

  • Ren, Rui (School of Civil Engineering, Xi'an University of Architecture & Technology) ;
  • Liang, Jiong-Feng (School of Civil & Architecture Engineering, East China University of Technology) ;
  • Liu, Da-wei (School of Civil & Architecture Engineering, East China University of Technology) ;
  • Gao, Jin-he (School of Civil & Architecture Engineering, East China University of Technology) ;
  • Chen, Lin (School of Civil & Architecture Engineering, East China University of Technology)
  • Received : 2019.01.03
  • Accepted : 2020.01.18
  • Published : 2020.03.25

Abstract

This paper aims at investigating the effect of crumb rubber size and content on compressive behaviors of concrete under axial compression. Concrete specimens are designed and produced by replacing natural aggregate with crumb rubber content of 0%, 5%, 10%, 15% and three different sized crumb rubbers (No. 20, No. 40, No. 80 crumb rubber). And the failure mode, compressive strength, elastic modulus, stress-strain curves, peak strain and ultimate strain are experimentally studied. Based on the test results, formulas have been presented to determine the compressive strength, elastic modulus, the relationship between prism compressive strength and cube compressive strength, stress-strain curves and peak strain of crumb rubber concrete (CRC). It is found that the proposed formulas agree well with the test result on the whole, which may be used to practical applications.

Acknowledgement

Supported by : Chinese National Natural Science Foundation, Natural Science Foundation of Jiangxi Province

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