沥青胶浆-集料界面水盐侵蚀损伤规律研究

doi:10.11896/cldb.22040097

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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.

Key words： asphalt mortar permeability interfacial strength water and salt erosion moisture damage

Published: 25 August 2022 Online: 2022-08-29

CLC number:

U414

Fund:National Natural Science Foundation of China (51908331).

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	Articles by authors
	ZHANG Jizhe
	WANG Jing
	LI Yan
	TANG Xiaodan
	XU Chenghu
	WANG Yefei
	SU Jizhuang
	ZHANG Guoyang
	HE Liang

Cite this article:

ZHANG Jizhe,WANG Jing,LI Yan, et al. Study on Water and Salt Erosion Damage of Asphalt Mortar-Aggregate Interface[J]. Materials Reports, 2022, 36(16): 22040097-9.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.22040097 OR http://www.mater-rep.com/EN/Y2022/V36/I16/22040097

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