针片状颗粒对沥青混合料路用性能影响研究  

Influence of needle-like particles on asphalt mixture road performance

作　　者：刘学鹏 秦仁杰 张认 王武魁 LIU Xue-peng;QIN Ren-jie;ZHANG Ren;WANG Wu-kui(School of Transportation Engineering,Changsha University of Technology,Changsha 410007,China)

机构地区：[1]长沙理工大学交通运输工程学院

出　　处：《河南城建学院学报》2019年第5期17-23,共7页Journal of Henan University of Urban Construction

基　　金：海南省交通科技项目(3010401)

摘　　要：以广惠高速南香山互通立交项目为依托,选取石灰岩材质粗集料,以5%、10%、15%、20%、25%五个针片状颗粒含量对AC-20C混合料进行试验。试验结果声明:其最佳油石比分别为4.13%、4.22%、4.26%、4.38、4.55%;伴随着针片状颗粒含量的增加,最佳油石比呈现增大趋势,集料的压碎值、洛杉矶磨耗值、高温稳定性、水稳定性均呈现下降趋势。通过控制石场选材、选择合适破碎设备和工艺,既节约成本又能提高混合料质量。Based on the Nanxiangshan Interchange Project of Guanghui Expressway,coarse aggregate made of limestone is selected and tested with 5%,10%,15%,20%,25%needle-like particle content for AC-20C mixture.The test results show that the optimal oil-stone ratio is 4.13%,4.22%,4.26%,4.38,4.55%respectively.With the increase of needle-like particle content,the optimum oil-stone ratio shows an increasing trend,and aggregate crushing value,Los Angeles abrasion value,high temperature stability and water stability all show a decreasing trend.By controlling the material selection in the stone yard and selecting suitable crushing equipment and technology,the cost can be saved and the quality of the mixture can be improved.

关 键 词：针片状颗粒 沥青混合料 压碎值 高温稳定性 矿料级配 

分 类 号：U414[交通运输工程—道路与铁道工程]