MA浇注式沥青混凝土高温稳定性能影响因素研究  

Study on Influence Factors to High Temperature Stability Performance of MA Cast Asphalt Concrete

作　　者：张顺先[1] 

机构地区：[1]广东省长大公路工程有限公司,广州510000

出　　处：《公路交通技术》2016年第4期10-14,共5页Technology of Highway and Transport

基　　金：国家重大科技支撑计划项目(2011BAG07B03)

摘　　要：对MA浇注式沥青混凝土高温稳定性能进行研究。采用硬度值及动稳定度作为高温稳定性能评价指标,从细集料级配组成设计、可溶沥青用量、矿粉含量、老化程度等方面分析高温稳定性能影响因素。研究表明:细集料级配组成越细,MA浇注式沥青混凝土高温稳定性能就越好;可溶沥青用量越大,MA浇注式沥青混凝土高温稳定性能就越差;矿粉用量越大,MA浇注式沥青混凝土高温稳定性能就越好;老化可提高MA浇注式沥青混凝土的高温稳定性能,与短期老化相比,长期老化影响更加显著。This paper studies high temperature peifomiance stability of MA cast asphalt concrete. Use hardness and dynamic stability of rut as high temperature performance stability evaluation indices, to analyze the high temperature peifomiance stability influencing factors in aspects such as fine aggregate gradation compositiondesign, soluble asphalt quantity, mineral powder content, aging degree, etc. Study results show that the finerfine aggregate gradation composition, the better high temperature performance stability of MA cast asphaltconcrete; The more soluble asphalt quantity, the worse high temperature performance stability of MA castasphalt concrete ; the more content of mineral powder, the better high temperature performance stability of MAcast asphalt concrete; ageing may improve the high temperature peifomiance stability of MA cast asphaltconcrete, compare with short time aging, long time aging has better effect.

关 键 词：MA浇注式沥青混凝土 硬度值 高温稳定性 细集料级配 可溶沥青 矿粉 老化 

分 类 号：U416.21[交通运输工程—道路与铁道工程]