Microstructural Study of Asphalt Mixture Containing Reclaimed Material
Microstructural Study of Asphalt Mixture Containing Reclaimed Material
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DOI：
10.4028/www.scientific.net/amr.622-623.206
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发表时间：
2012-12
期刊：
影响因子：
--
通讯作者：
Rawid Khan.;D. Lo Presti;A. Collop
中科院分区：
文献类型：
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作者：
Rawid Khan.;D. Lo Presti;A. Collop
本文对再生材料与沥青混合料的混合进行了非破坏性研究。用原始沥青混合料和含有再生材料的沥青混合料制备的试样在X射线计算机断层扫描（CT）中进行扫描。分析所获得的图像的颗粒和孔（空气空隙）分布。同时对所有试件进行了压缩试验和X射线扫描。结果发现，回收的分布是不均匀的，通过样品。混合时间的增加对颗粒的分布没有明显的影响。对于原始混合料和含有再生材料的沥青混合料，发现随着荷载的增加，空隙率（裂缝）增加的趋势相似。只有在失败的空隙增加被发现更高的标本含有回收材料。
In this paper mixing of reclaimed material with virgin asphalt material has been studied non-destructively. Specimens prepared with virgin asphalt mix and with asphalt mix containing reclaimed material were scanned in X-ray Computed tomography (CT). The obtained Images were analysed for particles and pores (air voids) distribution. All the specimens were also tested in compression test and X-ray scanned while testing. It was found that distribution of reclaimed is not uniform through the samples. There is no considerable effect of increasing the mixing time on particles’ distribution. Similar trend of increase in air voids (cracks) with the increase in load was found for both virgin mix and for asphalt mix containing reclaimed material. Only at failure the increase in voids was found higher for specimens containing reclaimed material.