合成材料老化与应用2024，Vol.53Issue(4)：44-47,4.
基于模量及温度应力的硬质沥青稳定碎石低温性能研究
Research on Low Temperature Performance of Hard Asphalt Treated Broken Stone Based on Modulus and Temperature Stresses
摘要
Abstract
It is more difficult to realize freeze fracture or bending test for large-size asphalt treated broken stone.In order to study the low-temperature performance of hard asphalt treated broken stone,two evaluation methods,namely,modulus master curve for a wide range of temperatures and low-temperature cracking temperature,were designed.Based on the modulus master curve,it was found that the dynamic modulus of hard asphalt treated broken stone was 112％higher than that of ordinary asphalt treated broken stone at 35 ℃,while it was only 19％higher than that of ordinary asphalt treated broken stone at-20 ℃.It was found that the low-temperature cracking temperatures calculated by temperature stress and tensile strength of both hard asphalt and ordinary asphalt treated broken stone reached the low-temperature cracking temperatures of less than-20 ℃,with the former was only 3 ℃ higher than the latter.The analysis and evaluation of both modulus and low-temperature cracking temperature show that the low-temperature performance of hard asphalt treated broken stone is slightly lower than that of ordinary asphalt treated broken stone,but it does not significantly increase the possibility of low-temperature cracking of pavements when they are applied to non-cold environments.关键词
硬质沥青/沥青稳定碎石/动态模量/温度应力Key words
hard asphalt/asphalt treated broken stone/dynamic modulus/temperature stresses分类
交通工程引用本文复制引用
姚锐,王黎明,孙永卓,张道明..基于模量及温度应力的硬质沥青稳定碎石低温性能研究[J].合成材料老化与应用,2024,53(4):44-47,4.基金项目
国家自然科学基金面上项目(52278449) （52278449）
黑龙江省交通运输厅科技项目(20210027). （20210027）
