沥青混合料车辙试验前后其体积参数变化规律分析  

The changing law analysis of rutting test of asphalt mixture on the volume parameter between pre and post test

作　　者：李萍[1] 吴会荣[1] 路明周[1] 

机构地区：[1]兰州理工大学土木工程学院,甘肃兰州730050

出　　处：《四川建筑科学研究》2010年第1期169-171,共3页Sichuan Building Science

基　　金：甘肃省自然科学基金资助项目(0803RJZA011);甘肃省自然科学基金资助项目(0916RJZA024)

摘　　要：研究沥青混合料车辙试验前后其体积参数对提高沥青混合料高温稳定性具有重要意义。采用轮碾法成型沥青混合料试件,并对试件钻芯取样,分析芯样的空隙率、矿料间隙率和沥青饱和度等体积参数。结果表明:辙槽处芯样的空隙率明显小于车辙前的;油石比在4.0%附近时,轮迹两侧的空隙率大于等于车辙前的,随着油石比的增大,轮迹两侧的空隙率减小并小于车辙前的;辙槽处芯样的空隙率要小于轮迹两侧的。The research of volume parameter between pre and post rutting test is important to improve the higb-temperature stability of asphalt mixture. In this paper, asphalt mixture samples were made by using rolling molding method, cored boring sampling, and analysed the volume parameter on volume of air voids ,voids in mineral aggregate and voids filled with asphalt. The result shows that the air voids of the rut trough is smaller than the pre-rutting;when the oil stone ratio is in the vicinity of 4. 0% ,the air voids of the round tracks is bigger than or equal to the pre-rutting,with the oil stone ratio increasing,the air voids of the round tracks reduces and be less than the pre-rutting; the air voids of the rut trough is smaller than the round tracks.

关 键 词：沥青混合料 轮碾法 空隙率 矿料间隙率 沥青饱和度 

分 类 号：TU528.42[建筑科学—建筑技术科学]