基于中法标准的改性沥青混合料性能评价
Performance Evaluation of Modified Asphalt Mixture Based on Sino-French Standards
余春 1陈志荣2
作者信息
- 1. 江西省公路工程检测中心,江西南昌 330000
- 2. 长安大学 特殊地区公路工程教育部重点实验室,陕西西安 710064
- 折叠
摘要
为了对比中、法两国沥青混合料性能测试评价体系的异同,分别对2种体系下典型混合料(AC-13和BBSG-14)的路用性能进行评价.采用FLEX 20改性沥青配制上述2种沥青混合料,并以中国标准体系下的马歇尔试件性能试验、浸水马歇尔试验、高温车辙试验、低温弯曲试验以及法国标准体系下的复数模量试验、车辙变形率试验、多列士试验进行性能评价.试验结果表明:FLEX 20改性沥青混合料具有良好的高温性能、低温性能和水稳定性;AC-13的动稳定度是BBSG-14的6倍;AC-13的弯曲强度仅为BBSG-14的66％;在水稳定性方面,2种沥青混合料相差较小,但中国的评价方法更加严格.中、法两国对沥青混合料路用性能评价方法具有一定相关性,试验结果对于推进中、法两国沥青混合料路用性能评价体系具有重要意义.
Abstract
In order to compare the evaluation systems of asphalt mixtures performance testing between China and France,the road performance of typical mixtures(AC-13 and BBSG-14)under the two systems were evaluated.The above two types of asphalt mixtures were formed with FLEX 20 modified asphalt.The performance was evaluated by Marshall specimen performance tests,immersion Marshall tests,high-temperature rutting tests,low-temperature bending tests under Chinese standard system,as well as complex modulus tests,rutting deformation rate tests,and Doraemon tests under French standard system.The experimental results show that FLEX 20 modified asphalt mix-ture has good high-temperature performance,low-temperature performance and water stability;The dynamic sta-bility of AC-13 is 6 times that of BBSG-14;The bending strength of AC-13 is only 66％of BBSG-14;In terms of water stability,the difference is relatively small.The Chinese evaluation method is more rigorous.The asphalt mix-ture road performance evaluation methods of Sino-Franch have a certain correlation.The test results are of great sig-nificance for promoting Sino-Franchroad performance evaluation system of asphalt mixtures.
关键词
道路工程/沥青混合料/路用性能/FLEX/20改性沥青/车辙变形率/多列士试验Key words
road engineering/asphalt mixture/pavement performance/FLEX 20 modified asphalt/rutting defor-mation rate/Doraemon test引用本文复制引用
基金项目
江西省交通运输厅科技项目(2021H0001)
出版年
2024
国家科技期刊平台
NSTL
万方数据