Study on Water and Salt Erosion Damage of Asphalt Mortar-Aggregate Interface
ZHANG Jizhe1,*, WANG Jing1, LI Yan2, TANG Xiaodan2, XU Chenghu2, WANG Yefei3, SU Jizhuang3, ZHANG Guoyang4, HE Liang5
1 School of Qilu Transportation, Shandong University, Jinan 250100, China 2 Shandong Hi-Speed Construction Management Group Co.,Ltd., Jinan 250000, China 3 Shandong Hi-Speed Engineering Test Co., Ltd., Jinan 250100, China 4 Shandong Hi-Speed with New Material Technology Co., Ltd., Jinan 250002, China 5 School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China
Abstract: The water and salt erosion of asphalt pavement is one of the main reasons for its performance deterioration and service life attenuation. In order to study the erosion damage law of water and salt in asphalt mixture, taking asphalt mortar and asphalt mortar-aggregate interface as the research objects, this work studied the influence of the physical and chemical properties of filler on the rheological properties and permeability of asphalt mortar and analyzed the attenuation law of interface strength of asphalt mortar-aggregate under different erosion conditions (static immersion and pressure immersion). It is found that the type of filler has little effect on the complex modulus of asphalt mortar, but its pore state and specific surface area have significant effects on the phase angle and permeability of asphalt mortar. Compared with ordinary immersion, salt solution erosion can significantly promote the strength attenuation of asphalt mortar-aggregate interface, and its attenuation rate is comprehensively affected by the physical (pore volume, specific surface area, micro morphology) and chemical (mineral composition, chemical composition) cha-racteristics of aggregate and filler. The effect of water pressure will accelerate the attenuation of asphalt mortar-aggregate interface strength, indicating that the dynamic water pressure generated by driving load will promote the water damage process of asphalt pavement.
张吉哲, 王静, 李岩, 唐小丹, 许成虎, 王业飞, 苏纪壮, 张国扬, 何亮. 沥青胶浆-集料界面水盐侵蚀损伤规律研究[J]. 材料导报, 2022, 36(16): 22040097-9.
ZHANG Jizhe, WANG Jing, LI Yan, TANG Xiaodan, XU Chenghu, WANG Yefei, SU Jizhuang, ZHANG Guoyang, HE Liang. Study on Water and Salt Erosion Damage of Asphalt Mortar-Aggregate Interface. Materials Reports, 2022, 36(16): 22040097-9.
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2022, Vol. 36 
