青藏高寒地区沥青混合料低温抗裂性能的灰关联分析  

Grey relational degree theory on low temperature anti-cracking performance of asphalt mixture under freeze-thaw cycles in cold plateau regions

作　　者：周雪艳[1] 马骉[1] 田宇翔[1] 彭水根 李瑞[1] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064 [2]江西省交通科学研究院,江西南昌330038

出　　处：《江苏大学学报（自然科学版）》2016年第5期597-603,共7页Journal of Jiangsu University：Natural Science Edition

基　　金："十二五"国家科技支撑计划项目(2014BAG05B04);交通运输部建设科技项目(2013318490010)

摘　　要：运用单因素方差分析方法,研究了低温弯曲试验结果,得到沥青种类、级配类型和不同的公称最大粒径对青藏高寒地区沥青混合料低温抗裂性能的影响程度;以弯曲应变能密度为评价指标,利用灰关联分析法分析沥青种类对低温抗裂性能的影响.结果表明:SBS/SBR复合改性沥青混合料的低温抗裂性能最优,SBS次之,SBR最差;具有骨架密实结构的级配B沥青混合料的低温抗裂性能优于级配A;AC-13沥青混合料的低温性能优于AC-20与AC-25.可见,在青藏高寒地区选用具有骨架密实结构、公称最大粒径较小的SBS/SBR复合改性沥青混合料,有利于提高沥青混合料的低温抗裂性能.Based on one-way ANOVA method, the low temperature bending test was conducted to discuss the effects of asphalt species, graded type and nominal maximum particle size on low temperatm＇e anti- cracking performance of asphalt mixture. Taking bending strain energy density as evaluation indicator, the effects of asphalt species on low temperature anti-cracking performance of asphalt mixture were analyzed by grey relational degree theory-. The results show that the low temperature anti-cracking performance of SBS/SBlt modified asphalt mixture is the best and followed by SBS modifying and SBR modifying. Asphalt mixture graded B with skeleton dense structure has better low temperature anti- cracking pefforInance than asphalt mixture graded A. The low temperature anti-cracking performance of asphalt mixture AC-13 is better than those of AC-20 and AC-25. SBS/SBR modified asphalt mixture with skeleton dense structure and little nominal maximum particle size can improve the low temperature anti- cracking performance of asphalt mixture under freeze-thaw conditions.

关 键 词：沥青混合料 道路工程 低温抗裂性能 单因素方差分析 灰关联分析 

分 类 号：U414.75[交通运输工程—道路与铁道工程]