Flexural Fatigue Behavior of PAN Fiber Reinforced Concrete under Cyclic Loading

Abstract:

The flexural fatigue performance of polyacrylonitrile (PAN) fiber reinforced concrete (PANFRC）was investigated by third-point loading tests. Based on the previous research work, optimum mixture proportions of PANFRC for highway overlays and bridge decks that satisfied both the minimum compressive and bending strengths, and showed excellent mechanical properties, were selected for fatigue testing. The experimental program included a total of 69 flexural specimens, 15 of which were plain concrete specimens, and the remaining 54 specimens were PANFRC specimens. Three mixes containing 0.0%, 0.1 %, and 0.15% of PAN fiber volume fractions were selected. For each mix, 4 different target load ranges were applied: 10–75%, 10–80%, 10–85%, and 10–90% of the ultimate flexural capacity, as obtained from the corresponding control static test. The bending fatigue life of PANFRC specimens under various stress ratios are proved to follow two-parameter Weibull distribution. Both a semi-logarithm and a double-logarithm P-S-N equations with various failure probabilities are derived from the experimental measurements. The denifition of the fatigue damage variable and damage evolution equation for PANFRC are furtherly proposed based on theory of continuum damage mechanics.

• Periodical: Advanced Materials Research (Volumes 168-170)
• Pages: 2143-2149
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.168-170.2143
• Online since: December 2010
• Authors: Wei Dong Zhuo, Shang Guan Ping, Yin Gu
• Keywords: Damage Evolution, Damage Variable, Fatigue, PAN Fiber Reinforced Concrete

References

[1] D.E. Otter, A.E. Naaman: ACI Materials Journal, Vol. 85 (1988), p.254–61.

[2] X.P. Shi, Z.K. Yao, H. Li and M.H. Gu: Journal of Civil Engineering, Vol. 23 (1990), pp.11-22 [in Chinese].

[3] C.D. Johnston, R. W Zemp: ACI Materials Journal, Vol. 88 (1991), p.374–83.

[4] A. Nanni: Cement and Concrete Composites, Vol. 13 (1991), pp.239-245.

[5] M. Grzybowski, C. Meyer: ACI Materials Journal, Vol. 90 (1993), p.594–604.

[6] A. E. Naaman, H. Hammoud: Cement and Concrete Composites, Vol. 20 (1998), pp.353-363.

[7] J. Zhang, H. Stang: ACI Materials Journal, Vol. 95 (1998), p.58–67.

[8] J. Zhang, Henrik Stang, V.C. Li: International Journal of Fatigue, Vol. 21 (1999), pp.1033-1049.

[9] Y.L. Zhao, W. Sun: Journal of Chon Qing Jiao Tong Institute, Vol. 18 (1999), pp.17-22 [in Chinese].

[10] Z.C. Deng: Cement and Concrete Composites, Vol. 27 (2005), pp.131-140.

[11] J. Zhang, C.K.Y. Leung, Y.N. Cheung: Composites Science and Technology, Vol. 66 (2006), pp.1501-1512.

[12] P. Rossi, E. Parant: Cement and Concrete Research, Vol. 38 (2008), pp.413-421.

[13] B. Shen, M. Hubler, G. H. Paulino, L.J. Struble: Cement and Concrete Composites, Vol. 30 (2008), pp.663-673.

DOI: 10.1016/j.cemconcomp.2008.02.002

[14] K. Park, G.H. Paulino, J. Roesler: Cement and Concrete Research, Vol. 40 (2010), pp.956-965.

[15] Z.C. Xie: Research on the Behavior of Polyacrylonitrile Fiber Reinforced Concrete Pavement Structure: MS thesis. Fuzhou: Fuzhou University, (2007) [in Chinese].

[16] Z.X. Li: Damage Mechanics and Its Application (Science Press, Beijing 2002) [in Chinese].