基于TLA与纤维复合改性技术高模量沥青混合料耐久性试验研究  

Study on Endurable of High Modulus Asphalt Mixture Based on TLA and Fiber Composite Modification Technology

作　　者：乔彦春 

机构地区：[1]通辽市科左后旗公路管理段,内蒙古通辽028000

出　　处：《公路工程》2015年第5期155-160,175,共7页Highway Engineering

基　　金：国家自然科学基金(51308395)

摘　　要：为改善高模量沥青混合料的低温抗裂性和耐久性,提出采用TLA与聚酯纤维复配方案获取高模量沥青混凝土,并基于室内加速加载、低温弯曲、冻融劈裂和APA疲劳试验研究了TLA掺量对高模量沥青混合料抗永久变形能力、低温抗裂性、水稳定性以及疲劳耐久性的影响,同时揭示了TLA与聚酯纤维对复合改性高模量沥青混合料的影响机理,推荐高模量沥青混合料最佳的复配方案为30%TLA+3‰聚酯纤维。In order to improve the low temperature cracking resistance and durability of high modulus asphalt mixture,this article proposes the use of TLA and polyester fiber complex methods to obtain high modulus asphalt concrete,and based on indoor accelerated load,low bending temperature,freezethaw splitting and APA fatigue test to study the influence of TLA content permanent deformation resistance performance,water stability ,low temperature crack resistance and fatigue resistance of high modulus asphalt mixtures,at the same time revealing the mechanism of the TLA and polyester fiber composite modified on high modulus asphalt mixture,recommended high modulus asphalt best complex solution is 30% TLA ＋3‰ polyester fibers.

关 键 词：路面工程 高模量沥青混凝土 聚酯纤维 特立尼达湖沥青 耐久性 

分 类 号：U414.1[交通运输工程—道路与铁道工程]