X-ray computed tomography in hydraulics of asphalt mixtures: Procedure, accuracy, and application
X-ray computed tomography in hydraulics of asphalt mixtures: Procedure, accuracy, and application
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DOI：
10.1016/j.conbuildmat.2016.01.032
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发表时间：
2016-04
影响因子：
7.4
通讯作者：
Huining Xu;Yiqiu Tan;Xingao Yao
中科院分区：
文献类型：
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作者：
Huining Xu;Yiqiu Tan;Xingao Yao
结合的进步，无论是相对于实验技术，以及图像处理程序准确地描述了水分分布在沥青混合料的内部结构，使用X射线计算机断层扫描技术。从图像分辨率和对比度两个方面，展示了不同的X射线CT试验参数和样本尺寸下部分饱和沥青混合料的定量和定性X射线CT结果，以说明这些参数对沥青混合料水硬性测量精度的影响。此外，我们提出了几个应用程序，我们的二维X射线CT图像饱和前后，分析了水分分布在微观尺度的沥青混合料与各种加载大小和速度。该方法为揭示沥青混合料微观尺度上的动静态水分分布特征和验证各种数值模拟方法提供了有效的机会。
A combination of advances both with respect to experimental techniques as well as image processing procedures accurately describes moisture distribution in the internal structure of asphalt mixtures using X-ray computed tomography technology. The quantitative and qualitative X-ray CT results for partially saturated asphalt mixtures are displayed, which is obtained with different test parameters of X-ray CT and sample sizes to demonstrate the effect of these parameters on measurement accuracy of the hydraulics of asphalt mixtures using X-ray CT images, considering the aspects of both image resolution and contrast. In addition, we present several applications of our two-dimensional X-ray CT images before and after saturation, which analyzes the moisture distribution in the micro-scale of asphalt mixtures with various loading sizes and speed. This method provides an effective opportunity to reveal the dynamic/static water distribution characteristics on the micro-scale of asphalt mixtures and verify various numerical modeling methods.