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-  2015 

含盐高湿地区沥青抗剥落剂的应用 Application of anti-stripping agents to salty and humid area

Keywords: 含盐高湿地区,沥青混合料,抗剥落剂,种类,最佳掺量范围

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Abstract:

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%

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