Imperial College London
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Professor Nick Buenfeld

Faculty of Engineering, Department of Civil and Environmental Engineering

Professor of Concrete Structures
 
 
 
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Contact

 

n.buenfeld Website

 
 
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Location

 

228BSkempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Wu:2015:10.1016/j.cemconres.2014.10.018,
author = {Wu, Z and Wong, HS and Buenfeld, NR},
doi = {10.1016/j.cemconres.2014.10.018},
journal = {Cement and Concrete Research},
pages = {35--48},
title = {Influence of drying-induced microcracking and related size effects on mass transport properties of concrete},
url = {http://dx.doi.org/10.1016/j.cemconres.2014.10.018},
volume = {68},
year = {2015}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Microcracking has been suspected of influencing the transport properties and durability of concrete structures, but the nature and extent of this influence is unclear. This paper focuses on the influence of drying-induced microcracking. Samples were prepared with sample thickness/maximum aggregate size (t/MSA) ratios ranging from 2 to 20 and dried to equilibrium at 105 °C or 50 °C/7% RH or 21 °C (stepwise: 93% RH → 55% RH) prior to characterisation of microcracks and transport tests. Results show for the first time that there is a significant size effect on microcracks and transport properties. Samples with smaller t/MSA had more severe microcracking and higher gas permeability. Gas permeability decreased with increasing t/MSA (for a decreasing MSA), and remained constant beyond t/MSA of 10. However, this size effect was not seen on gas diffusivity and sorptivity. The implications of these findings particularly regarding the influence of drying-induced microcracks on the durability of concrete structures are discussed.
AU  - Wu,Z
AU  - Wong,HS
AU  - Buenfeld,NR
DO  - 10.1016/j.cemconres.2014.10.018
EP  - 48
PY  - 2015///
SN  - 0008-8846
SP  - 35
TI  - Influence of drying-induced microcracking and related size effects on mass transport properties of concrete
T2  - Cement and Concrete Research
UR  - http://dx.doi.org/10.1016/j.cemconres.2014.10.018
UR  - https://www.sciencedirect.com/science/article/pii/S0008884614002154
UR  - http://hdl.handle.net/10044/1/26336
VL  - 68
ER  -
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