The Frontiers of Society, Science and Technology, 2019, 1(3); doi: 10.25236/FSST.20190301.
Renjie Wu1,*, Hongkai Chen2, Deyu Meng1
1. School of Civil Engineering, Chongqing Jiaotong University, Chongqing, People's Republic of China
2. School of City and Architecture Engineering, Zaozhuang University, Shandong, People's Republic of China
The splitting strength of the permeable asphalt mixture before and after freeze-thaw cycles was obtained by freeze-thaw splitting test. And the CT scanning images of the specimen in different layers before and after freeze-thaw splitting was obtained. The micro-structures damage characteristics of the permeable asphalt mixture after freeze-thaw splitting was analyzed, and the evolution law of the inner micro-structures of the permeable asphalt mixture was analyzed by the damage variable. The results of this paper show that with the increasing number of freeze-thaw cycles, the splitting strength of the asphalt mixture decreases gradually. Most of the cracks of the permeable asphalt mixture after freeze-thaw cycled occurred at the initial void density distribution of the specimen, and the spreading direction of the void is basically consistent with the direction of the initial void. The mechanical properties of asphalt mixtures are poor with larger voids, and the increasing of the damage variable with larger voids is more than that with less voids.
Permeable asphalt mixture; Freeze-thaw splitting; CT scanning images; Damage variable
Renjie Wu Hongkai Chen Deyu Meng. Internal Damage Mechanism of Permeable Asphalt Mixture by the Freeze-thaw Splitting. The Frontiers of Society, Science and Technology (2019) Vol. 1 Issue 3: 1-10. https://doi.org/10.25236/FSST.20190301.
[1]H.K. Chen, X.F. Xian, H.M. Tang(2009). Stability analysis method for perilous rock by fracture mechanics, Jounal of Chongqing University, Vol. 32, No. 4, pp.434-437.
[2]H.K. Chen, H.M. Tang(2007). Method to calculate fatigue fracture life of control fissure in perilous rock, Applied Mathematics and Mechanics, Vol. 28, No. 5, pp.575-580.
[3]H.K. Chen, R.G. Zhang, H.M. Tang, et al (2012). Elastic & impulsive dynamic parameters of a ruptured compression-shear perilous rock, Journal of Vibration and Shock, Vol. 31, No. 24, pp.30-33.
[4]L.F. Wang, H.K. Chen, H.M. Tang(2013). The aging calculate method for perilous rock stability reliability based on fracture mechanics and optimization method, Journal of Wuhan University of Technology, Vol. 35, No. 4, pp.434-437.
[5]Y. Wu, S.M. He, X.pp. Li, et al(2010). Failure mechanism and diagnosis method of dangerous crack rock after earthquake, Journal of Sichuan University (Engineering Science Edition), Vol. 42, No. 5, pp.185-190.
[6]J.H. Li, L.Z. Wu(2013). Calculation of stress intensity factor of unstable rock, Journal of Engineering Geology, Vol. 21, No. 2, pp.236-242.
[7]C.J. Liu, S.F. Zhang, L.Q. Ding, et al(2012). Identification of dangerous rock mass of high slope and study of anchoring method based on laser scanning, Chinese Journal of Rock Mechanics and Engineering, Vol. 31, No. 10, pp.2139-2146.
[8]M.M. Yu, Z.X. Jia, X.X. Li(2012). Analysis on the stability of the dangerous rock in high slope based on the mechanics model of cantilever, Safety and Environmental Engineering, Vol. 19, No. 1, pp.117-119.
[9]Y.X. Zhang, L. Lu, S.pp. Zhang, et al(2010). Development and failure principle of differential weathering overhanging rock, Journal of Civil, Architectural & Environmental Engineering, Vol. 32, No. 2, pp.1-6.
[10]A.X. Zheng, X.Q. Luo, H. Shen(2013). Numerical simulation and analysis of deformation and failure of jointed rock slopes by extended finite element method, Rock and Soil Mechanics, Vol. 34, No.8, pp.2371-2377.
[11]Y.C. Shi, R.D. Qiu, J.J. Sun, et al(2011). Analysis of dynamic response of dangerous rock mass reinforced by prestressed anchor cables under seismic loads, Rock and Soil Mechanics, Vol. 32, No. 4, pp.1157-1162.
[12]H.M. Tang, H.K. Chen(2008). Revised method of water pressure in control fissure of perilous rock mass, The Chinese Journal of Geological Hazard and control, Vol. 19, No. 4, pp.86-90.
[13]C.J. Deng, G.J. He, Y.R. Zheng(2006). Studies on Drucker-Prager yield criterions based on M-C yield criterion and application in geotechnical engineering, Chinese Journal of Geotechnica Engineering, Vol. 28, No. 6, pp.735-739.