含盐高湿地区沥青抗剥落剂的应用

发布时间：2018-06-01 08:54

本文选题：含盐高湿地区 + 沥青混合料　；参考：《武汉大学学报(工学版)》2015年01期

【摘要】：为提高含盐高湿地区沥青混合料的水稳定性,首先采用改进的水煮法初步确定各抗剥落剂在含盐高湿环境下的合理掺量;然后对掺有不同抗剥落剂的沥青混合料进行冻融劈裂试验和动水压力冲刷劈裂试验,优选适合含盐高湿环境的抗剥落剂种类;最后进行浸水汉堡车辙试验、常规车辙试验和低温弯曲试验,确定含盐高湿环境下抗剥落剂的最佳掺量范围.结果表明:非胺类抗剥落剂A、T在老化后的性能优于胺类抗剥落剂P、H,掺有抗剥落剂A的混合料冻融劈裂强度比和冲刷劈裂强度比均最大;建议含盐高湿地区采用抗剥落剂A来提高混合料的水稳定性,其最佳掺量范围为沥青用量的0.5%~0.7%.
[Abstract]:In order to improve the water stability of asphalt mixture in high humidity and salt bearing area, the reasonable amount of anti-stripping agent in high humidity and salt environment was determined by the improved boiling method. Then the asphalt mixture mixed with different anti-stripping agents is tested by freeze-thaw splitting test and dynamic water pressure scouring splitting test to select the kind of anti-flaking agent suitable for salt-containing and high-humidity environment. Finally, the rutting test of immersion hamburger is carried out. Conventional rutting test and low temperature bending test were used to determine the optimum range of anti-stripping agent under high humidity and salt content. The results show that the properties of non-amine anti-stripping agent AfT after aging are better than that of amine anti-stripping agent PnH, and the ratio of freeze-thaw splitting strength and scour splitting strength of mixture mixed with anti-stripping agent A is the highest. It is suggested that anti-stripping agent A should be used to improve the water stability of the mixture in salt and high humidity areas, and the optimum range is 0.5% and 0.7% of the asphalt content.
【作者单位】：长安大学特殊地区公路工程教育部重点实验室;
【基金】：国家自然科学基金项目(编号:51008031)
【分类号】：U414

【相似文献】