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@article{Yio:2017:10.1016/j.cemconres.2017.09.012,
author = {Yio, MHN and Wong, HS and Buenfeld, NR},
doi = {10.1016/j.cemconres.2017.09.012},
journal = {Cement and Concrete Research},
pages = {187--202},
title = {Representative elementary volume (REV) of cementitious materials from three-dimensional pore structure analysis},
url = {http://dx.doi.org/10.1016/j.cemconres.2017.09.012},
volume = {102},
year = {2017}
}

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TY  - JOUR
AB  - The representative elementary volume (REV) is a fundamental property of a material, but no direct measurements exist for cementitious materials. In this paper, the REV of cement pastes with supplementary cementitious materials (GGBS, PFA, SF) was determined by analysing the three-dimensional pore structure (> 0.2 μm) using laser scanning confocal microscopy (LSCM). The effect of axial distortion inherent to LSCM on 3D pore structure was also investigated. A range of 3D pore parameters was measured using skeletonisation, maximal ball and random walker algorithms. Results show that axial distortion has insignificant effects on most parameters except Euler connectivity, average pore and throat volumes and directional diffusion tortuosities. Most pore parameters become independent of sampling volume at ≈ 603 μm3 except diffusion tortuosities and formation factor. The REV for porosity calculated based on a statistical approach at eight realisations and 5% relative error was found to be ≈ 1003 μm3.
AU  - Yio,MHN
AU  - Wong,HS
AU  - Buenfeld,NR
DO  - 10.1016/j.cemconres.2017.09.012
EP  - 202
PY  - 2017///
SN  - 0008-8846
SP  - 187
TI  - Representative elementary volume (REV) of cementitious materials from three-dimensional pore structure analysis
T2  - Cement and Concrete Research
UR  - http://dx.doi.org/10.1016/j.cemconres.2017.09.012
UR  - http://hdl.handle.net/10044/1/51437
VL  - 102
ER  -

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