Fire Spalling Modeling of High Performance Concrete

Abstract:

Under high temperature conditions, such as fire, high performance concrete will undergo material degradation or even spalling. Spalling is the most detrimental damage to concrete structures. To prevent concrete from spalling, the mechanism should be understood. In this paper, an anisotropic damage model, in which both the thermal stress and vapor pressure are incorporated, is presented to analyze the spalling mechanism. The spalling phenomenon is studied based on two cases of different moisture contents. It is concluded that when the vapor pressure is present, concrete will behave much more brittlely.

• Periodical: Applied Mechanics and Materials (Volumes 52-54)
• Pages: 378-383
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.52-54.378
• Online since: March 2011
• Authors: Jie Zhao, Jian Jun Zheng, Gai Fei Peng
• Keywords: Damage Modeling, Fire, High-Performance Concrete (HPC), High-Temperature, Spalling

References

[1] K.D. Hertz: ACI Mater. J. Vol. 89 (1992), p.345.

[2] G.F. Peng: Evaluation of fire damage to high performance concrete. Ph.D. Thesis. Hong Kong Polytechnic University (2000).

[3] L.T. Phan and N.J. Carino: ACI Mater. J. Vol. 99 (2002), p.54.

[4] Z.P. Bažant: Fire Performance of High-Strength Concrete, edited by L.T. Phan, NIST, Gaithersburg, MD (1997).

[5] F.J. Ulm, P. Acker and M. Lévy: J. Eng. Mech. -ASCE Vol. 125 (1999), p.283.

[6] D. Gawin, F. Pesavento and B.A. Schrefler: Comput. Method. Appl. M. Vol. 195 (2006), p.5707.

[7] M.B. Dwaikat and V.K.R. Kodur: Fire Safety J. Vol. 44 (2009), p.425.

[8] R. Tenchev and P. Purnell: Int. J. Solids Struct. Vol. 42 (2005), p.6550.

[9] Y.F. Fu, Y.L. Wong, C.S. Poon and C.A. Tang: Cement Concrete Comp. Vol. 29 (2007), p.103.

[10] J. Zhao, G.F. Peng, Z.Q. Guo and Z.W. Qian: Computational Technologies in Concrete Structures, edited by C.K. Choi, Jeju, Korea (2009).