Study on Water and Salt Erosion Damage of Asphalt Mortar-Aggregate Interface

被引：0

作者：

Zhang J. ^{[1
]}

Wang J. ^{[1
]}

Li Y. ^{[2
]}

Tang X. ^{[2
]}

Xu C. ^{[2
]}

Wang Y. ^{[3
]}

Su J. ^{[3
]}

Zhang G. ^{[4
]}

He L. ^{[5
]}

机构：

[1] School of Qilu Transportation, Shandong University, Jinan

[2] Shandong Hi-Speed Construction Management Group Co., Ltd., Jinan

[3] Shandong Hi-Speed Engineering Test Co., Ltd., Jinan

[4] Shandong Hi-Speed with New Material Technology Co., Ltd., Jinan

[5] School of Civil Engineering, Chongqing Jiaotong University, Chongqing

来源：

Cailiao Daobao/Materials Reports | 2022年 / 36卷 / 16期

基金：

中国国家自然科学基金;

关键词：

asphalt mortar; interfacial strength; moisture damage; permeability; water and salt erosion;

D O I：

10.11896/cldb.22040097

中图分类号：

学科分类号：

摘要：

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) characteristics 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. © 2022 Cailiao Daobaoshe/ Materials Review. All rights reserved.

引用

共 25 条

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