沥青路面层间粘结效果影响因素  

Influencing factors on bonding effect between asphalt layers

作　　者：苏新国[1] 颜赫[2] 鲁圣弟[1] 黄学文[1] 陈华鑫[2] 

机构地区：[1]安徽省高速公路控股集团有限公司,安徽合肥230051 [2]长安大学公路学院,陕西西安710064

出　　处：《长安大学学报（自然科学版）》2013年第3期21-26,68,共7页Journal of Chang’an University(Natural Science Edition)

基　　金：新世纪优秀人才支持计划资助项目(NCET-10-0277);中央高校基本科研业务费专项资金项目(CHD2010ZD004)

摘　　要：为了保证沥青路面层间具有良好的粘结力,提高路面的整体性和耐久性,对沥青路面层间粘结效果的影响因素进行专门的试验研究。采用沥青路面层间扭转剪切试验仪,通过成型双层车辙板并钻芯,对芯样进行剪切试验,以最大剪切强度作为评价指标,对影响沥青路面层间粘结性能的沥青混合料类型、乳化沥青种类、乳化沥青洒布剂量、温度等影响因素进行了对比分析。结果表明:AC密级配沥青混合料层间粘结效果好于SMA和OGFC混合料;改性乳化沥青作为粘层比普通乳化沥青层间粘结效果要好,粘层洒布量有一最佳剂量,且这一最佳洒布剂量AC路面结构比骨架型路面结构要低;层间粘结效果随温度升高出现衰减,表明路面层间产生滑移,多发生在高温季节。To ensure a good adhesion force of the asphalt pavement interlayer and improve the integrity and durability,the special experiment was conducted to study the influencing factors on interlaminar bonding effect.Through forming double rutting plates and shearing tests on core samples,the influencing factors on interlaminar bonding effect,such as type of asphalt mixture and emulsified asphalt,spray volume of emulsified asphalt and temperature were analyzed by using a new interlayer shearing tester taking the maximum shear strength as the evaluation index.The results show that the bonding effect of AC is better than that of SMA and OGFC,modified emulsified asphalt is better than common emulsified asphalt and the emulsified asphalt has an optimal dosage,and the dosage for AC pavement structure is lower than framework structure.Also,the bonding effect has a trend of decreasing with temperature increasing.6 tabs,8 figs,11 refs.

关 键 词：道路工程 沥青路面 粘结层 洒布剂量 扭转剪切强度 

分 类 号：U414.75[交通运输工程—道路与铁道工程]