温拌沥青混合料马歇尔变温变击实功设计方法(英文)  

Design method of warm mix asphalt based on Marshall test under variable temperatures and compaction times

作　　者：裴建中[1] 徐丽[2] 张久鹏[1] 邢向阳[3] 

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,陕西西安710064 [2]中交第一公路勘察设计研究院有限公司,陕西西安710075 [3]山西省交通科学研究院,山西太原030006

出　　处：《交通运输工程学报》2011年第4期1-9,16,共10页Journal of Traffic and Transportation Engineering

基　　金：Special Fundfor Basic Scientific Research of Central Colleges(CHD2010JC002);Technology Project of Ministry of Transport(2011-319-812-020);Key Programof Shaanxi Natural Science Foundationfor Basic Research Plan(2010JZ009)

摘　　要：为了建立温拌沥青混合料组成设计方法,在不同温度和击实次数下进行了AC-13C温拌沥青混合料的马歇尔击实试验,分析了温拌沥青混合料体积特性。分析结果表明：随着击实温度的降低和击实次数的减少,温拌沥青混合料的空隙率和矿料间隙率增大,沥青饱和度降低;与热拌沥青混合料相比,温拌沥青混合料中沥青被集料吸收的含量（质量分数）、有效沥青含量和沥青膜厚度变化很小,并确定了AC-13C温拌沥青混合料的最佳沥青用量为4.7%。根据体积特性确定了温拌沥青混合料的成型温度,与热拌沥青混合料相比,温拌基质沥青混合料的成型温度降低约为10℃~20℃,温拌SBS改性沥青混合料的成型温度降低约为10℃;温拌沥青混合料具有更好的可压实性,与热拌沥青混合料相比,温拌基质沥青混合料击实次数降低约为20%,温拌SBS改性沥青混合料的击实次数降低约为10%。In order to establish the mixture design method for warm mix asphalt（WMA）,Marshall test was conducted under variable temperatures and compaction times to prepare AC-13C WMA specimens,and the volume characteristics of WMA specimens were researched.Analysis result indicates that the air void volume（VV） and the percent voids in mineral aggregate（VMA） increase with the decrease of compaction temperatures and compaction times,but the percent voids in mineral aggregate that are filled with asphalt（VFA） decrease.Compared with hot mix asphalt（HMA）,the asphalt content absorbed by aggregates,the effective asphalt content（mass fraction） and the thickness of asphalt film in WMA differ a little,and the optimum asphalt content of AC-13C WMA is 4.7%.According to the volume characteristics,the compaction temperatures of WMAs are determined,and the compaction temperatures of WMAs with matrix asphalt and SBS modified asphalt decrease by about 10 ℃-20 ℃ and 10 ℃ respectively.WMA compactibility is better,and the compaction times of WMAs with matrix asphalt and SBS modified asphalt decrease by about 20% and 10% respectively.4 tabs,10 figs,13 refs.

关 键 词：路面工程 温拌沥青混合料 马歇尔设计方法 体积特性 击实次数 击实温度 

分 类 号：U416.217[交通运输工程—道路与铁道工程]