有机化蒙脱土改善SBS改性沥青性能的研究  

Research of Improvement of SBS-Modified Asphalt Pavement Performance by Organic Monotmorillonite

作　　者：刘大梁[1] 包双雁[1] 

机构地区：[1]长沙理工大学公路工程学院,湖南长沙410076

出　　处：《建筑材料学报》2007年第4期500-504,共5页Journal of Building Materials

基　　金：湖南省自然科学基金资助项目(05JJ40085)

摘　　要：对掺入适量有机化蒙脱土的SBS改性沥青的常规技术性能、贮存稳定性能、美国战略公路研究计划（SHRP）技术性能等进行了试验研究；对有机化蒙脱土在SBS改性沥青中的作用原理进行了分析．结果表明，在SBS含量为5％（质量分数）的改性沥青中掺入适量（0～10％，质量分数）的有机化蒙脱土，可获得贮存稳定的SBS改性沥青，其常规技术性能满足聚合物改性沥青SBS类I—D技术指标要求，且优于不掺有机化蒙脱土的SBS改性沥青；SHRP技术性能满足PG70—22的指标要求．Effect of organic monotmorillon on performance, storage stability, SHRP technical performance of SBS-modified asphalt was investigated. Test results show that when content of SBS is 5%（by mass） in SBS-modified asphalt by adding a certain amount of organic monotmorillonite, the SBS-modified asphalt that is stable in storage can be obtained. Its conventional technical performance meets the requirement set forth in polymer modified asphalt SBS category I-D technical specification, and is better than that without organic monotmorillonite in the SBS-modified asphalt, SHRP technical performance accords with PGT0--22 technical requirements. The mechanism of improvement by organic monotmorillonite in the SBS-modified asphalt is analyzed.

关 键 词：道路工程 SBS 有机化蒙脱土(OMMT) 改性沥青 技术性能 

分 类 号：U414.75[交通运输工程—道路与铁道工程]