Imperial College London
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Professor Hong S. Wong

Faculty of Engineering, Department of Civil and Environmental Engineering

Professor of Concrete Materials
 
 
 
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Contact

 

+44 (0)20 7594 5956hong.wong Website

 
 
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Assistant

 

Ms Ruth Bello +44 (0)20 7594 6040

 
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Location

 

228DSkempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Yio:2019:10.1016/j.cemconres.2018.12.007,
author = {Yio, MHN and Wong, H and Buenfeld, N},
doi = {10.1016/j.cemconres.2018.12.007},
journal = {Cement and Concrete Research},
pages = {23--37},
title = {3D pore structure and mass transport properties of blended cementitious materials},
url = {http://dx.doi.org/10.1016/j.cemconres.2018.12.007},
volume = {117},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The effect of supplementary cementitious materials on three-dimensional pore structure and how this influences mass transport properties are not well understood. This paper examines the effect of silica fume, fly ash and ground granulated blastfurnace slag on 3D structure of capillary pores (>0.24μm) within 1003μm3 cement paste for the first time using laser scanning confocal microscopy, combined with backscattered electron imaging and mercury intrusion porosimetry. Pastes containing different binder types, w/b ratios and curing ages were tested. Results show that SF enhances 3D pore structure from early ages whereas PFA and GGBS show improvements at later ages. SCMs not only reduce the volume and size of accessible pores, but also decrease connectivity and increase tortuosity, pore coordination number and formation factor. Measured 3D pore parameters were used as modelling inputs to estimate diffusivity and permeability. Predictions to within a factor of five from measured values were obtained.
AU  - Yio,MHN
AU  - Wong,H
AU  - Buenfeld,N
DO  - 10.1016/j.cemconres.2018.12.007
EP  - 37
PY  - 2019///
SN  - 0008-8846
SP  - 23
TI  - 3D pore structure and mass transport properties of blended cementitious materials
T2  - Cement and Concrete Research
UR  - http://dx.doi.org/10.1016/j.cemconres.2018.12.007
UR  - http://hdl.handle.net/10044/1/66806
VL  - 117
ER  -
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