Particle Characterization of Manufactured Sand and Its Influence on Concrete Properties |
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| Authors: | Jiale Wu Weiguo Shen Deqiang Zhao Miaomiao Wu Zhen Yu Zhicheng Zhao Zhitang Li Dinglve Wu Jiangtao Sun |
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| Affiliation: | 1.State Key Laboratory of Silicate Materials for Architecture, Wuhan University of Technology, Wuhan 430070, China; (J.W.); (D.Z.); (M.W.); (Z.Y.); (Z.Z.);2.School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China;3.Poly Changda Engineering Company Limited, Guangzhou 545000, China; (Z.L.); (D.W.); (J.S.) |
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| Abstract: | With the rapid development of infrastructure construction, it is an inevitable trend to replace natural sand in short supply with manufactured sand to meet sustainable development. In this paper, the relationship between the particle shape characteristics of manufactured sand and concrete performance is discussed using a morphological analysis and concrete experiments. The particle shape parameters of five types of manufactured sand were obtained by using the aggregate image measurement system (AIMS) and digital image processing (DIP) techniques, and the correlations between different parameters were analyzed. Moreover, the properties of concrete with the five kinds of manufactured sand were tested. The results show that particle size and type have a significant impact on particle shape parameters. Particle shape parameters, especially angularity, correlate well with the workability and compressive strength of concrete while having little effect on the durability of concrete. An accurate understanding of the morphological characteristics of manufactured sand is conducive to the optimization of concrete mix designs. Therefore, it is suggested that a manufactured-sand shape test be included in aggregate specification. |
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| Keywords: | manufactured sand particle characterization aggregate imaging measurement system digital image processing concrete properties correlation |
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