氯盐融雪剂对沥青结合料路用性能的影响

发布时间：2018-01-17 17:39

本文关键词：氯盐融雪剂对沥青结合料路用性能的影响　出处：《交通运输工程学报》2014年04期 　论文类型：期刊论文

【摘要】：选取基质沥青和SBS改性沥青以及NaCl、CaCl_2融雪剂,制备了沥青试样,采用软化点、针入度、延度、粘度和红外光谱等试验方法,分析了氯盐融雪剂浸泡后的沥青高温性能、低温性能、感温性能、抗老化性能及红外光谱,揭示了氯盐融雪剂对沥青结合料路用性能的影响及其作用机理。分析结果表明:融雪剂提高了基质沥青的高温性能,降低了SBS改性沥青的高温性能;融雪剂降低了基质沥青的感温性能,增强了SBS改性沥青的感温性能;融雪剂降低了沥青的低温性能,但提高了沥青的抗老化性能;CaCl_2融雪剂对基质沥青路用性能的影响更明显,NaCl融雪剂对SBS改性沥青路用性能的影响更明显;融雪剂与沥青没有发生化学反应,融雪剂浸泡不会引起沥青分子结构或官能团的变化。
[Abstract]:The asphalt samples were prepared by using matrix asphalt, SBS modified asphalt and NaCl-CaCl2 snow melting agent. The test methods such as softening point, penetration, ductility, viscosity and infrared spectrum were used. The high temperature performance, low temperature performance, temperature sensing property, aging resistance and infrared spectrum of bitumen after immersion with chloride snowmelt agent were analyzed. The effect of chlorinated snow melting agent on the pavement performance of asphalt binder and its mechanism are revealed. The results show that the snow melting agent can improve the high temperature performance of base asphalt and decrease the high temperature performance of SBS modified asphalt. The snow melting agent reduced the temperature sensitivity of the base asphalt and enhanced the temperature sensitivity of the SBS modified asphalt. Snow melting agent reduces the low temperature performance of asphalt, but improves the aging resistance of asphalt. The effect of CaCl_2 snow melting agent on the road performance of SBS modified asphalt was more obvious. There is no chemical reaction between snow melting agent and asphalt, and soaking with snow melting agent will not change the molecular structure or functional group of asphalt.
【作者单位】：长沙理工大学交通运输工程学院;广东华路交通科技有限公司;
【基金】：国家自然科学基金项目(51078045) 特殊环境道路工程湖南省重点实验室开放基金项目(kfj130401) 公路工程教育部重点实验室开放基金项目(kfj110103)
【分类号】：U414
【正文快照】： 2, 成品SBS改性沥青,其主要技术指标分别见表1、2。51 5 试验采用的融雪剂为氯化钠(NaCl)和氯化钙近年来中国快速发展的公路建设,便捷了物资 (CaCl2)两种。流动,推动了经济发展。但是冬季降雪为公路正常表1 S质沥青的技术指标运营带来了严重影响,因而冬季路面除冰雪是道路 Ta

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