Characterisation of micro-structural damage in asphalt mixtures using image analysis
Characterisation of micro-structural damage in asphalt mixtures using image analysis
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DOI：
10.1016/j.conbuildmat.2013.12.047
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发表时间：
2014-03-15
影响因子：
7.4
通讯作者：
Hainin, Mohd Rosli
中科院分区：
文献类型：
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作者：
Hassan, Norhidayah Abdul;Airey, Gordon D.;Hainin, Mohd Rosli
本文试图提供一种应用图像分析技术来表征由X射线图像拍摄的沥青混合料内部结构损伤的方法。本文用单轴单调压缩和间接拉伸疲劳两种破坏模式来说明所采取的步骤。采用二维图像分析方法对应力应变引起的空隙和裂缝特性进行了分析，并将其作为表征沥青混合料微观结构损伤的损伤指标。通过比较加载前后的X射线图像，建立了一套提取和验证损伤区域的程序。所提出的损伤参数可用于解释损伤行为，特别是气孔性质的变化以及裂纹形成和扩展的特征。此外，还发现所采用的损伤参数受破坏类型的影响。(C)2013爱思唯尔有限公司。保留所有权利。
This paper is an attempt to provide information on the application of an image analysis technique to characterise the internal structural damage of asphalt mixtures captured on X-ray images. In this paper, two modes of failures under uniaxial monotonic compression and indirect tensile fatigue were employed for illustrating the procedures undertaken. Air voids and crack properties as a result of the applied stresses and strains were analysed using two-dimensional image analysis and introduced as damage indicators for characterising the micro-structural damage of asphalt mixtures. A set of procedures for extracting and verifying the damage area were also established by comparing the X-ray images before and after the loading application. The proposed damage parameters were showed to be useful for interpreting the damage behaviour particularly the changes in air void properties and the characteristics of crack formation and crack propagation. In addition, it was also found that the damage parameters adopted are subjected to failure type. (C) 2013 Elsevier Ltd. All rights reserved.