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Computers and Concrete Volume 10, Number 2, August 2012 , pages 135-147 DOI: https://doi.org/10.12989/cac.2012.10.2.135 |
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Reconstruction of internal structures and numerical simulation for concrete composites at mesoscale |
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Chengbin Du, Shouyan Jiang, Wu QIN, Hairong Xu and Dong Lei
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| Abstract | ||
| At mesoscale, concrete is considered as a three-phase composite material consisting of the aggregate particles, the cement matrix and the interfacial transition zone (ITZ). The reconstruction of the internal structures for concrete composites requires the identification of the boundary of the aggregate particles and the cement matrix using digital imaging technology followed by post-processing through MATLAB. A parameter study covers the subsection transformation, median filter, and open and close operation of the digital image sample to obtain the optimal parameter for performing the image processing technology. The subsection transformation is performed using a grey histogram of the digital image samples with a threshold value of [120, 210] followed by median filtering with a 16 | ||
| Key Words | ||
| digital image processing; concrete composites; mesoscale; experiment; numerical simulation. | ||
| Address | ||
| Chengbin Du, Shouyan Jiang, Hairong Xu and Dong Lei: Department of Engineering Mechanics, Hohai University, Nanjing 210098, China; Wu QIN: CCCC Third Harbor Consultants Co., Ltd, Shanghai 200032, China | ||