Computers and Concrete

  • 제30권1호
  • /
  • Pages.9-17
  • /
  • 2022
  • /
  • 1598-8198(pISSN)
  • /
  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Compressive stress-strain behavior of RFAC after high temperature

  • Liang, Jiongfeng (Jiangsu Province Key Laboratory of Structure Engineering) ;
  • Wang, Liuhaoxiang (Faculty of Civil & Architecture Engineering, East China University of Technology) ;
  • Ling, Zhibin (Jiangsu Province Key Laboratory of Structure Engineering) ;
  • Li, Wei (Jiangsu Province Key Laboratory of Structure Engineering) ;
  • Yang, Wenrui (Faculty of Civil & Architecture Engineering, East China University of Technology)
  • 투고 : 2020.06.24
  • 심사 : 2022.06.07
  • 발행 : 2022.07.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper discusses the effect of high temperatures (Ts) on the compressive strength and stress-strain curve of recycled fine aggregate concrete (RFAC), based on the experimental results. A total of 90 prisms (100 mm×100 mm×300 mm) were tested. The results show that the compressive strength and elastic modulus of RFAC specimens decreased significantly with increasing T values. As T increased, the strain corresponding to peak stress decreased first when T<200℃ and then increased afterwards. With increasing T values, the stress-strain curves became flat gradually, the peak stress dropped gradually, and εp decreased when T<200℃ and increased in the T range of 400-800℃. A stress-strain relations for RFAC exposed to high Ts is proposed, which agree quite well with the test results and may be used to practical applications.

키워드

과제정보

The authors are grateful to the financial support provided by the Chinese National Natural Science Foundation (No. 52068001), the Project of academic and technological leaders of major disciplines in Jiangxi Province (No. 20204BCJL2037), the Natural Science Foundation of Jiangxi Province (No. 20202ACBL214017), the Key R&D Program of Jiangxi Province (No. 20212BBG73002), the research fund of Jiangsu Province key laboratory of Structure Engineering (No. ZD1901) and the Opening Fund of State Key Laboratory of Green Building in Western China (No. LSKF202117).

참고문헌

  1. Abdollahzadeh, G., Jahani, E. and Kashir.Z. (2016), "Predicting of compressive strength of recycled aggregate concrete by genetic programming", Comput. Concrete, 18(2), 155-163. https://doi.org/10.12989/cac.2016.18.2.155.
  2. Belen, G.F., Fernando, M.A., Diego, C.L. and Sindy, S.P. (2011), "Stress-strain relationship in axial compression for concrete using recycledsaturated coarse aggregate", Constr. Build. Mater., 25, 2335-2342. https://doi.org/10.1016/j.conbuildmat.2010.11.031.
  3. Chen, G.M., He, Y.H., Yang,H., Chen, J.F. and Guo, Y.C. (2014), "Compressive behavior of steel fiber reinforced recycled aggregate concrete after exposure to elevated temperatures", Constr. Build. Mater., 111(15), 363-378. https://doi.org/10.1016/j.conbuildmat.2014.08.012.
  4. Chen, J., Liu, X., Liu, H.W. and Zeng, L. (2018), "Axial compression behavior of circular recycled concrete-filled steel tubular short columns reinforced by silica fume and steel fiber", Steel Compos. Struct., 27(2), 193-200. https://doi.org/10.12989/scs.2018.27.2.193.
  5. Choi, W.C. and Yun, H.D. (2012), "Compressive behavior of reinforced concrete columns with recycled aggregate under uniaxial loading", Eng. Struct., 41(8), 285-293. https://doi.org/10.1016/j.engstruct.2012.03.037.
  6. Duan, Z.H. and Poon, C.S. (2014), "Properties of recycled aggregate concrete made with recycled aggregates with different amounts of old adhered mortars", Mater Des., 100(1), 19-29. https://doi.org/10.1016/j.matdes.2014.01.044.
  7. Guo, Z.H. and Zhang, X.Q. (1982), "Experimental investigation of stress-strain curves for concrete", Chin. J. Build. Struct., 3(1), 1-12. (in Chinese)
  8. Khatib, J.M. (2005), "Properties of concrete incorporating fine recycled aggregate", Cement Concrete Res., 35(4), 763-769. https://doi.org/10.1016/j.cemconres.2004.06.017.
  9. Laneyrie, C., Beaucour, A.L., Green, M.F., Hebert, R.L., Ledesert, B. and Noumowe, A (2016), "Influence of recycled coarse aggregates on normal and high performance concrete subjected to elevated temperatures", Constr. Build. Mater., 111(15), 363-378. https://doi.org/10.1016/j.conbuildmat.2016.02.056.
  10. Letelier Gonzalez, V.C. and Moriconi, G. (2014),"The influence of recycled concrete aggregates on the behavior of beam-column joints under cyclic loading", Eng Struct., 60, 148-154. https://doi.org/10.1016/j.engstruct.2013.12.024.
  11. Li, T., Xiao, J.Z., Zhu, C.M. and Zhong, Z. (2016), "Experimental study on mechanical behaviors of concrete with large-size recycled coarse aggregate", Constr. Build. Mater., 120(1), 321-328. https://doi.org/10.1016/j.conbuildmat.2016.05.110.
  12. Ma, H., Xue, J.Y., Liu, Y.H. and Dong, J. (2016),"Numerical analysis and horizontal bearing capacity of steel reinforced recycled concrete columns", Steel Compos Struct., 22(4), 797-820. https://doi.org/10.12989/scs.2016.22.4.797.
  13. Mas, B., Cladera, A., Olmo, T. and Pitarch, F. (2012), "Influence of the amount of mixed recycledaggregates on the properties of concrete for non-structural use", Constr. Build. Mater., 27(1), 612-622. https://doi.org/10.1016/j.conbuildmat.2011.06.073.
  14. Pandurangan, K., Dayanithy, A., Om Prakash, S. and Pitarch, F. (2016), "Influence of treatment methods on the bond strength of recycled aggregate concrete", Constr. Build. Mater., 120(1), 212-221. https://doi.org/10.1016/j.conbuildmat.2016.05.093.
  15. Peng, Y.K., Wu, H. and Yan, Z.G. (2015), "Strength and drift capacity of squat recycled concrete shear walls under cyclic loading", Eng Struct., 100(1), 356-368. https://doi.org/10.1016/j.engstruct.2015.06.025.
  16. Poon, C.S. and Chan, D.X. (2007), "The use of recycled aggregate in concrete in Hong Kong", Resour. Conserv. Recycl., 50(3), 293-305. https://doi.org/10.1016/j.resconrec.2006.06.005.
  17. Silva, R.V., Brito, J. and Dhir, R.K. (2014), "Properties and composition of recycled aggregates from construction and demolition waste suitable for concrete production", Constr. Build. Mater., 65, 201-217. https://doi.org/10.1016/j.conbuildmat.2014.04.117.
  18. Standard for Test Method of Basic Properties of Construction Moatar in China (JGT/T70-2009) (2009), Chinese Building Construction Publishing Press, Beijing. (in Chinese)
  19. Tam, W.Y., Butera, A. and Le, K.N. (2016), "Carbon-conditioned recycled aggregate in concrete production", J. Clean Prod., 133(1), 672-680. https://doi.org/10.1016/j.jclepro.2016.06.007.
  20. Wee, T.H., Chin, M.S. and Mansur, M.A. (1996), "Stress-strain relationship of high-strength concrete in compression", J. Mater. Civil Eng., 8, 70-76. https://doi.org/10.1061/(ASCE)0899-1561(1996)8:2(70).
  21. Xiao, J.Z. (2008), Recycled Concrete, Chinese Building Construction Publishing Press. (in Chinese)
  22. Xiao, J.Z., Li, J. and Zhang, C. (2005), "Mechanical properties of recycled aggregate concreteunder uniaxial loading", Cement Concrete Res., 35, 1187-1194. https://doi.org/10.1016/j.cemconres.2004.09.020.
  23. Xiao, J.Z., Li, W.G., Fan, Y.H. and Huang, X. (2012), "An overview of study on recycled aggregate concrete in China (1996-2011)", Constr. Build. Mater., 31, 364-383. https://doi.org/10.1016/j.conbuildmat.2011.12.074.
  24. Yang, H.F., Lan, W.W., Qin, Y.H. and Wang, J. (2016), "Evaluation of bond performance between deformed bars and recycled aggregate concrete after high temperatures exposure", Constr. Build. Mater., 112(3), 885-891. https://doi.org/10.1016/j.conbuildmat.2016.02.220.
  25. Yang, H.F., Qin, Y.H., Liao, Y. and Chen, W. (2016), "Shear behavior of recycled aggregate concrete after exposure to high temperatures", Constr. Build. Mater., 106(1), 374-381. https://doi.org/10.1016/j.conbuildmat.2015.12.103.
  26. Yang, Y.F. and Zhu, L.T. (2009), "Recycled aggregate concrete filled steel SHS beam-columns subjected to cyclic loading", Steel Compos Struct., 9(1), 19-38. https://doi.org/10.12989/scs.2009.9.1.019.
  27. Yaragal, S.C., Teja, D.C and Shaffi, M. (2016), "Performance studies on concrete with recycled coarse aggregates", Adv. Concrete Constr., 4(4), 263-281. https://doi.org/10.12989/acc.2016.4.4.263.
  28. Yi, S.T., Kim, J.K. and Oh, T.K. (2003), "Effect of strength and age on the stress-strain curves of concrete specimens", Cement Concrete Res., 33, 1235-1244. https://doi.org/10.1016/S0008-8846(03)00044-9.