Sasobit对沥青混合料阻燃性能的影响  

Influences of Sasobit on Asphalt Retardant Properties

作　　者：王春[1] 郝培文[1] 徐婷[1] 李瑞霞[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,西安710064

出　　处：《武汉理工大学学报》2012年第8期55-60,共6页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50808023)

摘　　要：通过对添加Sasobit温拌剂的温拌及温拌阻燃沥青混合料进行试验研究,对比分析了其在添加阻燃剂前后混合料在水稳定性、高温稳定性、低温抗裂性等路用性能方面的变化,并参照GB/T10707—1989橡胶燃烧性能测试标准规定的极限氧指数测试方法,采用改进的试样制备方法,对SBS改性沥青和SBS改性阻燃沥青分别在添加不同掺量Saso-bit温拌剂后的阻燃性能进行了试验研究。试验结果表明,Sasobit温拌沥青混合料在添加阻燃剂前后其路用性能均能满足规范要求,可以应用于隧道路面;然而氧指数试验结果表明,蜡基温拌剂Sasobit掺在沥青中有一定的助燃作用,它的添加会使沥青极限氧指数减小,阻燃性能变差,且随着其掺量的增加不断降低。The paper compared differences of water stability,high temperature stability,low temperature cracking resistance performance between warm mix asphalt with Sasobit and that additionally adding flame-retardant agent.And it also studied the flame-retardant properties of the SBS modified bitumen and SBS modified bitumen with retardant,adding different dosage of WMA-agent Sasobit,by the limiting-oxygen-index test using the improved sample preparation method,refering to GB/T10707—1989.The mixture tests＇ results show that the road performance of warm mix asphalt,with Sasobit and that additionally adding flame-retardant agent could meet the standard requirements of hot mix asphalt.However,the improved limiting-oxygen-index test indicated that WMA-agent Sasobit based on wax is combustion-supporting adding in asphalt.It decreases the limiting-oxygen-index and flame-retardant properties of asphalt,and decreasing with the continued increase of the dosage.

关 键 词：道路工程 Sasobit温拌剂 阻燃剂 路用性能 极限氧指数 阻燃性能 

分 类 号：U414[交通运输工程—道路与铁道工程]