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Computers and Concrete Volume 19, Number 6, June 2017 , pages 609-615 DOI: https://doi.org/10.12989/cac.2017.19.6.609 |
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Stress-strain relationship for recycled aggregate concrete after exposure to elevated temperatures |
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Jiong-Feng Liang, Ze-Ping Yang, Ping-Hua Yi and Jian-Bao Wang
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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, 800oc. 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. | ||
| Key Words | ||
| recycled aggregate; concrete; stress-strain relationship; temperature; strength | ||
| Address | ||
| Jiong-Feng Liang: 1) Jiangxi Engineering Research Center of Process and Equipment for New Energy, East China Institute of Technology, 418 Guanglan Road, Nanchang, P.R. China 2) Faculty of Civil & Architecture Engineering, East China Institute of Technology, 418 Guanglan Road, Nanchang, P.R. China Ze-Ping Yang, Ping-Hua Yi and Jian-Bao Wang: Faculty of Civil & Architecture Engineering, East China Institute of Technology, 418 Guanglan Road, Nanchang, P.R. China | ||