Multi Scale Evaluation of Damage Healing Performance of Asphalt Mixture

被引：0
|
作者：
Cui Y. [1 ]
Li X. [1 ]
Wu H. [1 ]
Zhang S. [1 ]
机构：
[1] School of Civil Engineering, Inner Mongolia University of Technology, Hohhot
来源：
Jianzhu Cailiao Xuebao/Journal of Building Materials | 2021年 / 24卷 / 02期
关键词：
Asphalt mixture; Digital speckle correlation method; Displacement field; Healing performance; Semi-circular bending test;
D O I：
10.3969/j.issn.1007-9629.2021.02.029
中图分类号：
学科分类号：
摘要：
The damage healing performance of asphalt mixture was evaluated by combining macro and micro methods. Based on the semicircular bending tensile test, the effects of aging degree, damage degree, healing time and healing temperature on the damage healing performance of asphalt mixture were studied by digital speckle correlation method(DSCM).The results show that the macro and micro indexes change with similar characteristics. With the deepening of aging degree, the damage healing performance of styrene-butadiene-styrene(SBS) modified asphalt mixture gradually deteriorates, and the change of the damage healing performance of base asphalt mixture is not obvious. The healing rate of asphalt mixture after thermal aging is close to that of asphalt mixture after ultraviolet combined aging. With the deepening of the damage degree, the damage healing performance of base asphalt mixture and SBS modified asphalt mixture is significantly reduced. The damage healing performance of base asphalt mixture is better than that of SBS modified asphalt mixture, and the damage healing performance of SBS modified asphalt mixture is more significantly affected by the damage degree. The higher the healing temperature and the longer the healing time, the better the damage healing performance of asphalt mixtures. © 2021, Editorial Department of Journal of Building Materials. All right reserved.
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页码：432 / 439
页数：7
相关论文
共 14 条
  • [1] BAZIN P, SAUNIER J B., Deformability, fatigue and healing properties of asphalt mixes, Proceedings of the Second International Conference on the Structural Design of Asphalt Pavements, pp. 553-569, (1967)
  • [2] HVEEM F N., Pavement fatigue deflections and fatigue failure, Highway Research Board, 114, pp. 43-87, (1955)
  • [3] SCHAPERY R A., On the mechanics of crack closing and bonding in linear viscoelastic media, International Journal of Fracture, 39, 1, (1989)
  • [4] ZOLLINGER C J., Application of surface energy measurements to evaluate moisture susceptibility of asphalt and aggregates, pp. 41-50, (2005)
  • [5] LITTLE D N, LYTTON R L, WILLIAMS D A, Et al., An analysis of the mechanism of microdamage healing based on the application of micromechanics first principles of fracture and healing, Journal of Association Asphalt Paving Technologist, 68, pp. 501-542, (1999)
  • [6] YAMAGUCHI I A., Laser-speckle strain gauge, Journal of Scientific Instruments, 14, 1, pp. 1270-1273, (1981)
  • [7] PETER W H, RANSON W F., Digital imaging techniques in experimental stress analysis, Optical Engineering, 21, 3, pp. 427-431, (1982)
  • [8] YUAN Miaomiao, ZHANG Xiaoning, Fatigue damage threshold analysis of asphalt mixture, Highway Transportation Technology(Applied Technology), 11, 12, pp. 148-150, (2015)
  • [9] ZHAO J Y, LIU Z W, GUO B Q., Three-dimensional digital image correlation method based on a light field camera, Optics and Lasers in Engineering, 116, pp. 19-25, (2019)
  • [10] BAO S Y, WANG Y H, LIU L, Et al., An error elimination method for high-temperature digital image correlation using speckle and camera, Optics and Lasers in Engineering, 116, pp. 47-54, (2019)
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