老化对泡沫温拌沥青混合料性能的影响

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英文篇名：Effect of Aging on Properties of Warm-mixed Asphalt Mixture 作者：李瑞 英文作者：LI Rui;Shanxi Vocational and Technical College of Transportation; 关键词：老化性能 ; 泡沫温拌 ; 沥青混合料 ; 路用性能 英文关键词：aging properties;;foamed warm-mix;;asphalt mixture;;road properties 中文刊名：材料科学与工程学报 英文刊名：Journal of Materials Science and Engineering 机构：山西交通职业技术学院; 出版日期：2019-02-20 出版单位：材料科学与工程学报 年：2019 期：01 基金：山西省教育厅资助项目(JG2013022) 语种：中文; 页：155-160 页数：6 CN：33-1307/T ISSN：1673-2812 分类号：U414

摘要

为研究老化对泡沫温拌沥青混合料性能的影响,采用体积指标法确定泡沫温拌Sup-20混合料的适宜成型温度,分别对不同老化时间下的泡沫温拌沥青混合料的体积指标以及原样混合料、短期老化后和长期老化后的热拌沥青混合料和泡沫温拌沥青混合料的高温性能、低温性能和水稳定性能进行研究。结果表明:泡沫温拌Sup-20混合料适宜的压实温度为110℃左右,拌和温度为125℃左右。泡沫温拌Sup-20混合料的高温抗车辙性能、低温抗裂性能和水稳定性能均稍弱于相应的热拌沥青混合料,并且泡沫温拌Sup-20混合料的路用性能衰减程度大于热拌混合料,其抗老化性能弱于热拌混合料。
        In order to study the effect of aging on properties of foamed warm-mixed asphalt mixture,volume index method was used to determine the optimum forming temperature of the foamed asphalt mixture.Road performance of original hot-mixed asphalt mixture and the foamed warm-mixed asphalt mixture under different conditions(original,short term aging,long term aging)was investigated through laboratory tests.Test results show that the optimal compaction temperature of Sup-20 foamed asphalt mixture is about 110℃,and the mixing temperature is about 125℃.High temperature performance,low temperature crack resistance and water stability of Sup-20 foamed asphalt mixture are weaker than that of hot-mixed asphalt mixture,the attenuation of road performance of Sup-20 foamed asphalt mixture is higher than that of hot-mixed asphalt mixture,and its aging resistance is lower than that of hot-mixed asphalt mixture.

引文

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