Imperial College London
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DrMarcusYio

Faculty of Engineering, Department of Civil and Environmental Engineering

Research Fellow
 
 
 
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Contact

 

+44 (0)20 7594 3495marcus.yio Website

 
 
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Location

 

239Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Mac:2021:10.1016/j.cemconres.2021.106416,
author = {Mac, M and Yio, MHN and Wong, H and Buenfeld, NR},
doi = {10.1016/j.cemconres.2021.106416},
journal = {Cement and Concrete Research},
pages = {1--15},
title = {Analysis of autogenous shrinkage-induced microcracks in concrete from 3D images},
url = {http://dx.doi.org/10.1016/j.cemconres.2021.106416},
volume = {144},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - A new image analysis procedure for quantifying microcracks from three-dimensional (3D) X-ray microCT images of concrete is presented. The method separates microcracks from air voids and aggregates by combining filtering and morphological operations. It was applied to study the effects of supplementary cementitious materials (SCMs) and curing age on autogenous shrinkage-induced microcracks in low w/b ratio concretes, and to determine the representative elementary volume (REV) for various properties of microcracks and air voids. Results showed that slag and silica fume significantly increased autogenous shrinkage and related microcracking. These SCMs increased volume fraction, width, length, dendritic density, anisotropy, and connectivity of microcracks, but decreased specific surface and tortuosity. Similar trends were observed with age. Comparison between 3D and 2D measurements was made. REV analysis showed that a sampling volume of ~20 × 20 × 25 mm3 is sufficient for characterising most parameters of autogenous shrinkage microcracks and air voids in concrete.
AU  - Mac,M
AU  - Yio,MHN
AU  - Wong,H
AU  - Buenfeld,NR
DO  - 10.1016/j.cemconres.2021.106416
EP  - 15
PY  - 2021///
SN  - 0008-8846
SP  - 1
TI  - Analysis of autogenous shrinkage-induced microcracks in concrete from 3D images
T2  - Cement and Concrete Research
UR  - http://dx.doi.org/10.1016/j.cemconres.2021.106416
UR  - https://www.sciencedirect.com/science/article/pii/S000888462100065X
UR  - http://hdl.handle.net/10044/1/88378
VL  - 144
ER  -
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