Imperial College London
Portrait Picture

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{Wu:2019:10.1016/j.cemconres.2018.10.006,
author = {Wu, Z and Wong, H and Chen, C and Buenfeld, NR},
doi = {10.1016/j.cemconres.2018.10.006},
journal = {Cement and Concrete Research},
pages = {90--104},
title = {Anomalous water absorption in cement-based materials caused by drying shrinkage induced microcracks},
url = {http://dx.doi.org/10.1016/j.cemconres.2018.10.006},
volume = {115},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - This paper concerns understanding the influence of drying induced microcracking on water absorption by capillary suction. Paste, mortar and concrete samples with different binder type, w/b ratio, thickness, aggregate size, and curing age were tested. Samples were subjected to gentle stepwise drying at 21°C/93%→55% RH, or drying at 21°C/55% RH, 21°C/0% RH, 50°C or 105°C to induce microcracks <100μm wide. Results show that the presence of microcracks causes cumulative water absorption to scale non-linearly with . The observed relationship is approximately sigmoidal/S-shaped, with the position of inflection point related to microcracking and the degree of non-linearity increasing with drying severity. A simple fluorescence imaging method was developed to enable continuous monitoring of the advancing wetting front and to study the effect of microcracks. Quantitative image analysis of water penetration produced results consistent with gravimetric measurements.
AU  - Wu,Z
AU  - Wong,H
AU  - Chen,C
AU  - Buenfeld,NR
DO  - 10.1016/j.cemconres.2018.10.006
EP  - 104
PY  - 2019///
SN  - 0008-8846
SP  - 90
TI  - Anomalous water absorption in cement-based materials caused by drying shrinkage induced microcracks
T2  - Cement and Concrete Research
UR  - http://dx.doi.org/10.1016/j.cemconres.2018.10.006
UR  - http://hdl.handle.net/10044/1/65541
VL  - 115
ER  -
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