Effects of Sustained Elevated Temperature on Concrete Properties in Material Engineering and its Applications

Abstract:

This paper presents the results of experiment conducted to evaluate the effects of sustained elevated temperature on concrete. In this experiment, concrete with 4 types of cement, low-heat portland cement, blast-furnace slag cement and fly-ash cement were tested for strength without seal after sustained temperature exposure in the range of 20 to 300°C. Compressive strengths did not decline linearly with temperature and were minimal at around 50°C, showing 20% reduction, which associated with inter-mediate weight loss of 3%. Reductions in tensile strength and modulus of elasticity were greater than compressive strength.

• Periodical: Advanced Materials Research (Volume 578)
• Pages: 154-157
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.578.154
• Online since: October 2012
• Authors: Hong Zhu Quan
• Keywords: Compressive Strength, Concrete, Elevated Temperature, Tensile Strength

References

[1] H. Kasami,T. Okuno, Y. Yamane. Properties of Concrete Exposed to Sustained Elevated Temperature, Proc. of 3rd Int. Conf. on Structural Mechanics in Reactor Technology, Vol. 1. H1/5, pp.1-9, Sept. (1975).

[2] F.S. Rostasyet, R. Weiss, G. Wiedemann. Change of Pore Structure of Cement Mortars Due to Temperature, Cement and Concrete Research, Vol. 10, pp.157-164, (1980).

DOI: 10.1016/0008-8846(80)90072-1

[3] D.R. Lankard, D.L. Birkimer, M.J. Snyder. Effects of Moisture Content on Structural Properties of Portland Cement Concrete Exposed to Temperatures up to 500℃, ACI SP-25, Temperature and Concrete, (1968).

[4] R.J. Kottas, H.K. Seeberger. Strength Characteristics of Concrete in the Temperature Range of 20℃ to 200℃, 5th Int. Conf. on Structural Mechanics in Reactor Technology, Vol. H. H1/2, (1979).

[5] R.D. Browne, P.B. Bemforth. The Long Term Creep of Wylfa P.V. Concrete for Loading Ages up to 12 Years, 3rd Int. Conf. on Structural Mechanics in Reactor Technology, Vol. H, H1/8, (1975).

[6] G.G. Carette,K. E, Painter, V.M. Malhotra, Performance of Concrete made with Normal Portland Cement, Normal Portland Cement and Slag, Normal Portland Cement and Fly-ash at Sustained High Temperature, ACI Annual Meeting, Jan. (1981).

DOI: 10.14359/4115

[7] K. Kishitani, H, Kasami, Effects of Type of Cement and Mixture Proportion on the Properties of Concrete Exposed to Elevated Temperatures, Summaries of Technical Papers of Annual Meeting of Architectural Institute of Japan, Oct., 1980. (Japanese).