沥青胶浆-集料界面水盐侵蚀损伤与多因素影响规律研究

doi:10.11896/cldb.24010156

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Abstract Long-term erosion by soluble salts result in a decrease in terms of the asphalt mortar-aggregate interface adhesion, and it is an important factor to the service life of asphalt pavement in coastal areas. In order to reveal the essential principles of the soluble salt erosion, this work focused on the adhesive behavior of asphalt mortar-aggregate interface under different conditions. A type of dynamic moisture pressure simulation test device was developed to study the strength attenuation behavior of asphalt mortar-aggregate interface under different erosion conditions. In addition, the influence of physical and chemical properties of mineral powders and aggregates on the interface strength was revealed by using grey correlation analysis, andthe key factors which dominate the moisture and salt erosion damage of asphalt mortar-aggregate interface were explored. The results indicated that the strength of asphalt mortar-aggregate interface decreases gradually under the water immersion, and the soluble salt promotes the attenuation rate of interface strength. Under dynamic moisture pressure erosion, the interface, subjected to repeated extrusion and pumping action, leads to a significant decrease of adhesive strength. At the same time, the dry-wet and freeze-thaw conditions improved the internal stress of the mortar-aggregate interface which accelerated the interfacial failure. The correlation between interface strength and diffe-rent factors are ranked as follows:void content ＞ apparent density ＞ specific surface area ＞ average particle size ＞ SiO₂ content of mineral powder ＞ SiO₂ content of aggregate, the pore volume, apparent density and specific surface area are the key factors which affect the interfacial strength.

Key words： asphalt mortar gray correlation interface water-salt erosion key factor

Published: 25 March 2025 Online: 2025-03-24

CLC number:

U414

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	Articles by authors
	ZHU Yanli
	MA Chuanyi
	ZHANG Jizhe
	FAN Xiuze
	HE Liang
	YAO Zhanyong

Cite this article:

ZHU Yanli,MA Chuanyi,ZHANG Jizhe, et al. Experimental Investigation of Moisture-salt Erosion and Multiple Factors Influence on Asphalt Mortar-Aggregate Interface[J]. Materials Reports, 2025, 39(6): 24010156-8.

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https://www.mater-rep.com/EN/10.11896/cldb.24010156 OR https://www.mater-rep.com/EN/Y2025/V39/I6/24010156

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