Abstract
Abstract Diversity in microscopic particle morphology and the particle contact between geomaterials can play an important role in terms of their respective mechanical properties. In this paper, a series of laboratory tests, including a compaction test, sieving test, and a CT scan test have been conducted on renewable construction waste mixtures from the Xi-Xian Highway. Using Image-Pro Plus to identify CT scan images, the quantitative indicators of aggregate particle size, contour shape, and angularity were determined, and the classification method and standard of renewable construction waste particles were determined. According to the particle contact form in the CT scan image, the construction waste particle contact can be divided into a suspension-dense structure, a skeleton-fill structure, and a skeleton-porosity structure. Furthermore, this paper analyses the destruction mode of construction waste particles and reveals the destruction mechanism of recycled construction waste mixtures. This study analyses in detail the mesoscopic characteristics of renewable construction waste mix and provides a technical reference for the broadening research and popularisation of construction waste mix.
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