Evaluation of Long‑Term Water Stability of Acidic Diorite Asphalt Mixtures in Different Environments

Authors

CAO Zhonglu, CCCC Tianjin Port Engineering Institute Co ., Ltd., Tianjin 300222 , ChinaFollow
CHEN Ping, Guangxi Key Laboratory of Building New Energy and Energy Conservation , Guilin University of Technology , Guilin , Guangxi 541004 , China
LIU Xuewen, Guangxi Key Laboratory of Building New Energy and Energy Conservation , Guilin University of Technology , Guilin , Guangxi 541004 , China
TAN Bo, Guangxi Key Laboratory of Building New Energy and Energy Conservation , Guilin University of Technology , Guilin , Guangxi 541004 , ChinaFollow

Corresponding Author

谭波，男，博士，教授.E-mail：bbbza2004@163.com

Abstract

The short-term water stability of acidic diorite asphalt mixtures with acid-alkaline composite aggregates mixed with cement （2% cement instead of mineral powder ），slaked lime （30% slaked lime water for stone immersion ），and anti-spalling agent （modified asphalt with 0.3% anti-spalling agent ） was evaluated by Marshall test of immersion，freeze-thaw splitting test，and rutting test.Then，by repeated freeze-thaw splitting test，repeated freeze-thaw and baking splitting test，and repeated acid-etching freeze-thaw splitting test，the long-term water stability of the treated acidic diorite asphalt mixtures in different environments was tested.The results show that the physical and mechanical properties of acidic diorite meet the specification requirements；the short-term water stability of the treated acidic diorite asphalt mixtures is significantly improved and meets the specification requirements.However，the long-term water stability of the acidic diorite asphalt mixtures treated with 0.2% anti-spalling agent is poor at high temperatures.The acidic diorite asphalt mixtures treated with 30% slaked lime water have good long-term water stability and can be recommended for engineering applications.

Publication Date

5-7-2024

DOI

10.14048/j.issn.1671-2579.2024.02.008

First Page

75

Last Page

81

Submission Date

February 2025

Recommended Citation

Zhonglu, CAO; Ping, CHEN; Xuewen, LIU; and Bo, TAN (2024) "Evaluation of Long‑Term Water Stability of Acidic Diorite Asphalt Mixtures in Different Environments," Journal of China & Foreign Highway: Vol. 44: Iss. 2, Article 8.
DOI: 10.14048/j.issn.1671-2579.2024.02.008
Available at: https://zwgl1980.csust.edu.cn/journal/vol44/iss2/8

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