Structural Engineering and Mechanics

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Mechanical behavior of recycled fine aggregate concrete after high temperature

  • Liang, Jiong-Feng (State Key Laboratory Breeding Base of Nuclear Resources and Environment, East China Institute of Technology) ;
  • Wang, En (Faculty of Civil & Architecture Engineering, East China Institute of Technology) ;
  • He, Chun-Feng (Faculty of Civil & Architecture Engineering, East China Institute of Technology) ;
  • Hu, Peng (Faculty of Civil & Architecture Engineering, East China Institute of Technology)
  • Received : 2017.02.26
  • Accepted : 2017.11.17
  • Published : 2018.02.10
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Abstract

This paper reports mechanical behavior of recycled fine aggregate concretes after high temperatures. It is found that compressive strength of recycled fine aggregate concretes decline significantly as the temperature rises. The elastic modulus of recycled fine aggregate concretes decreases with the increase in temperature, and the decrease is much quicker than the decrease in compressive strength. The split tensile strength of recycled fine aggregate concrete decrease as the temperature rises. Through the regression analysis, the relationship of the mechanical behavior with temperature are proposed, including the compressive behavior, elastic modulus and split tensile strength, which are fitting the test data.

Keywords

Acknowledgement

Supported by : Chinese National Natural Science Foundation, Natural Science Foundation of Department of Education of Jiangxi Province, Guangxi Key Laboratory of Disaster Prevention and Structural Safety

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