Computers and Concrete

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Stress-strain relationship for recycled aggregate concrete after exposure to elevated temperatures

  • Liang, Jiong-Feng (Jiangxi Engineering Research Center of Process and Equipment for New Energy, East China Institute of Technology) ;
  • Yang, Ze-Ping (Faculty of Civil & Architecture Engineering, East China Institute of Technology) ;
  • Yi, Ping-Hua (Faculty of Civil & Architecture Engineering, East China Institute of Technology) ;
  • Wang, Jian-Bao (Faculty of Civil & Architecture Engineering, East China Institute of Technology)
  • Received : 2016.07.22
  • Accepted : 2017.02.12
  • Published : 2017.06.25
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Abstract

In this paper, the effects of elevated temperatures on the strength and compressive stress-strain curve (SSC) of recycled coarse aggregate concrete with different replacement percentages are presented. 90 recycled coarse aggregate concrete prisms are heated up to 20, 200, 400, 600, $800^{\circ}C$. The results show that the compressive strength, split tensile strength, elastic modulus of recycled aggregate concrete specimens decline significantly as the temperature rise. While the peak strain increase of recycled aggregate concrete specimens as the temperature rise. Compared to the experimental curves, the proposed stress-strain relations for recycled aggregate concrete after exposure elevated temperatures can be used in practical engineering applications.

Keywords

Acknowledgement

Supported by : Chinese National Natural Science Foundation, Natural Science Foundation of Jiangxi Province, East China Institute of Technology

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  2. The Dynamic Mechanical Properties for Recycled Aggregate Concrete under Tensile-Compressive States vol.24, pp.5, 2017, https://doi.org/10.1007/s12205-020-2307-0