环氧沥青混合料低温性能及评价指标

发布时间：2018-04-14 00:05

  本文选题：环氧沥青混合料 + 试验研究　； 参考：《西南交通大学学报》2017年05期

【摘要】：为了给低温条件下环氧沥青混合料道面设计提供理论依据,通过室内试验,研究了环氧沥青混合料低温开裂性能及性能评价指标.通过沥青混合料多种低温评价指标适用性分析,建议低温劈裂强度作为评价环氧沥青混合料低温抗裂能力的指标;寒冷地区新建的环氧沥青道面结构设计,以低温开裂临界温度-31℃作为考虑面层低温开裂的设计指标,以低温劈裂强度作为结构设计控制指标.结果表明,环氧沥青混合料在低温条件下蠕变速率小,塑性差,但低温抗裂性能较好,抗拉强度是同类型改性沥青混合料的1.3~2.0倍,劲度模量为1.3~1.9倍.
[Abstract]:In order to provide theoretical basis for pavement design of epoxy asphalt mixture under low temperature, the cracking performance and performance evaluation index of epoxy asphalt mixture at low temperature were studied through laboratory tests.Through the applicability analysis of several low temperature evaluation indexes of asphalt mixture, it is suggested that the low temperature splitting strength be used as the index to evaluate the low temperature crack resistance of epoxy asphalt mixture.The critical temperature of low temperature cracking (-31 鈩，

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