不同填料沥青胶浆物理力学性能试验  

Experimental study of physical and mechanical properties of asphalt mortars with different fillers

作　　者：程永春[1] 马慧莉[1] 张鹏[1] 陶敬林 黄建平[1] 

机构地区：[1]吉林大学交通学院,长春130022

出　　处：《吉林大学学报（工学版）》2014年第6期1628-1632,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51278222);吉林大学研究生创新基金项目(20121079)

摘　　要：对掺量均为7%的矿粉沥青胶浆和硅藻土粉沥青胶浆进行了物理、力学性能试验,其中物理试验包括软化点、针入度及布氏黏度试验;力学试验包括小梁低温冲击试验及三点弯曲试验。沥青物理试验结果表明:硅藻土粉可以显著提升沥青高、低温性能,并利于弱化沥青的温度敏感性。力学试验结果表明:硅藻土粉沥青胶浆不仅具有更加优良的抗冲击性能,而且能够承受更大的低温变形,从而对硅藻土改性沥青混凝土的制备过程中硅藻土粉和矿粉的掺入比例设计具有一定的指导意义,有利于硅藻土改性沥青混凝土的推广使用。The physical and mechanical properties of asphalt mortars respectively mixed with 7% mine filler and with 7%diatomite were tested,the physical tests including point test,penetration test and Brookfield viscosity test,the mechanical tests including impact test and three-point bending test.The physical tests indicate that the diatomite can significantly strengthen the high and low temperature performance of asphalt.In addition,diatomite is more conducive to weakening temperature sensitivity of asphalt mortar.The mechanical tests indicate that diatomite asphalt mortar has better impact resistance performance and higher deformation resistance at low temperature.Thus,it is significant for preparation of diatomite modified asphalt concrete on the design of grade mixing ratio,so as to be conducive to promoting the use of diatomite modified asphalt mortar.

关 键 词：道路工程 沥青胶浆 温度敏感性 冲击试验 弯曲试验 

分 类 号：U416.2[交通运输工程—道路与铁道工程]