Sasobit温拌排水沥青混合料老化性能  

Aging Performance of Sasobit Warm Mix Porous Asphalt Mixture

作　　者：王健[1] 陈景雅[1] 王坤[2] 瞿翔[1] 

机构地区：[1]河海大学土木与交通学院,江苏南京210098 [2]江苏省交通规划设计院股份有限公司,江苏南京210014

出　　处：《大连交通大学学报》2015年第3期56-59,共4页Journal of Dalian Jiaotong University

摘　　要：为了分析Sasobit温拌排水沥青混合料老化后性能,以热拌OGFC-13沥青混合料、温拌OGFC-13沥青混合料、掺加5%Na Cl的温拌OGFC-13沥青混合料为研究对象,分别在未老化、短期老化、长期老化的条件下,采用室内实验对沥青混合料路用性能进行对比研究.实验结果表明:老化后的混合料高温稳定性、水稳定性、低温抗裂性较未老化时均降低,长期老化的影响最显著,其中对低温抗裂性能影响最大;长期老化后,Na Cl掺量为5%的沥青混合料低温抗裂性较未掺加Na Cl时大幅度下降,说明5%掺量的Na Cl对长期老化后沥青混合料的低温指标有负面影响.Under new mix and short-term and long-term aging conditions, related experiments are used to compare the asphalt mixture pavement performances in order to analyze the impact of aging on Sasobit warm mix porous asphalt performance and improve the accuracy of asphalt mixture performance evaluation. Hot and warm mixed OGFC-13 asphalt mixtures, and the warm mixed OGFC-13 asphalt mixture with adding 5% salt are used. Test results indicate that the high temperature stability, water stability, the low temperature crack resistance of mixtures are all decreased after aging. The long-term aging makes the most significant effect on the mixture performance, and the low temperature crack resistance. After the long-term aging, the 5% salt reduces the low temperature crack resistance instead of improving the new mix,indicating that a higher dosage of NaCl has a negative impact on low-temperature indicators after long-term aging of asphalt mixtures.

关 键 词：老化性能 Sasobit温拌排水沥青混合料 高温稳定性 水稳定性 低温抗裂性 

分 类 号：U414[交通运输工程—道路与铁道工程]