温拌橡胶沥青混合料施工和易性研究  

Researchon construction workability of asphalt-rubber mixture with warm mix additives

作　　者：何亮[1,2,3] 何兆益[3] 凌天清[3] 马涛[4] 黄晓明[4] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,西安710064 [2]长沙理工大学道路结构与材料交通行业重点实验室,长沙410004 [3]重庆交通大学交通土建工程材料国家地方联合工程实验室,重庆400074 [4]东南大学交通学院,南京210096

出　　处：《功能材料》2015年第20期20102-20107,共6页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51308572);中国博士后基金面上资助项目(2014M562361);道路结构与材料交通行业重点实验室(长沙)开放基金资助项目(kfj140303);交通土建工程材料国家地方联合工程实验室开放基金资助项目(LHSYS-2014-010)

摘　　要：为了研究温拌橡胶沥青混合料施工和易性,首先根据不同温拌技术机理选择3种典型温拌剂制作了温拌橡胶沥青,并通过技术指标测试确定了该橡胶沥青的温拌剂掺量,然后通过温拌沥青胶浆粘温关系实验以及不同出料温度下混合料旋转压实特性实验研究了温拌橡胶沥青混合料的施工和易性。结果表明,表面活性温拌剂对橡胶沥青技术指标没有明显影响,有机降粘温拌剂对橡胶沥青各项性能指标有明显影响,推荐该橡胶沥青的Sasobit掺量为2%、Evotherm M1为0.6%与Evotherm DAT为11.1%;温拌橡胶沥青胶浆实验可作为判别表面活性温拌剂温拌效果的一种方法,温拌剂不仅可以改善较低出料温度旋转压实试件的体积参数,还可提高橡胶沥青裹腹率,3种温拌剂都能降低橡胶沥青混合料施工温度20℃以上。In order to research the construction workability of warm mix asphalt-rubber mixture,three kinds of representative warm mix additives were selected to make warm mix asphalt-rubber based on the mechanism of difference warm mix technology,and the dosages of warm mix additives to the asphalt-rubber were determined by technique index results,then the construction workability of warm mix asphalt-rubber mixture was researched both by viscosity-temperature dependency test on warm mix asphalt-rubber mastic and superpave gyratory compaction(SGC)test on the mixture from different discharging temperature.Results indicate that,the surfactant warm mix additives has no significant effect on technique index of asphalt rubber,but it's opposite to organic viscosity reducer,and it was recommend that the dosage of Sasobit was 2%,Evotherm M1 was 0.6%and Evotherm DAT was 11.1%;viscosity-temperature dependency test on warm mix asphalt-rubber mastic can be a method to judge the warm mix effect of surfactant warm mix additives;the three kinds of warm mix additives can not only improve the volume parameters of the specimens by SGC from lower discharging temperature,but also enhance the asphalt-rubber coating ratio,and all of them can reduce the construction temperature of rubber asphalt mixture at least 20 ℃.

关 键 词：道路工程 温拌技术 橡胶沥青 粘温关系 旋转压实 

分 类 号：U416.217[交通运输工程—道路与铁道工程]