Evaluation of influence of gradation segregation on pavement moisture damage under action of dynamic and static water environment

被引：0
|
作者：
Chen X. [1 ,2 ]
Cao C.-F. [1 ,2 ]
Shang J. [1 ,2 ]
Huang M.-X. [1 ,3 ]
Ai C.-F. [1 ,2 ]
Ren D.-Y. [1 ,2 ]
机构：
[1] School of Civil Engineering, Southwest Jiaotong University, Chengdu
[2] Highway Engineering Key Laboratory of Sichuan Province, Chengdu
[3] Sichuan Suiguangsuixi Expressway Co., Ltd., Suining
来源：
Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2023年 / 53卷 / 01期
关键词：
evaluation index; gradation segregation; long-term effect; moisture damage; moisture induced sensitivity tester; road engineering; short-term effect;
D O I：
10.13229/j.cnki.jdxbgxb20210516
中图分类号：
学科分类号：
摘要：
In view of the deficiency of the existing research on the effect of gradation segregation on the water damage resistance of asphalt mixture, the effects of various water environment effects and different segregation degrees on the water loss resistance of asphalt mixture were studied based on the moisture sensitivity tester(MIST). The results show that:the weakening order of water environment on splitting strength and marshall stability is "static immersion + MIST(long-term + short-term effect)" > "MIST (short-term effect)" > "static immersion (long-term effect)"; after the occurrence of gradation segregation, the order of splitting strength and Marshall stability is HC (heavy segregation of coarse aggregate)< LC (mild segregation of coarse aggregate)< D (no segregation)< LF (mild segregation of fine aggregate)< HF (heavy segregation of fine aggregate); the effect of hydrodynamic environment aggravates the effect of gradation segregation on splitting strength and Marshall stability, and the effect of gradation segregation on water permeability coefficient is much greater than that of water environment. © 2023 Editorial Board of Jilin University. All rights reserved.
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页码：210 / 219
页数：9
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