| Issue |
MATEC Web Conf.
Volume 199, 2018
International Conference on Concrete Repair, Rehabilitation and Retrofitting (ICCRRR 2018)
|
|
|---|---|---|
| Article Number | 07015 | |
| Number of page(s) | 7 | |
| Section | Repair Materials and Systems | |
| DOI | https://doi.org/10.1051/matecconf/201819907015 | |
| Published online | 31 October 2018 | |
The effect of hydrophobic (silane) treatment on concrete durability characteristics
CoMSIRU, Department of Civil Engineering, University of Cape Town, South Africa
* Corresponding author: shwhar001@myuct.ac.za
Hydrophobic (silane) impregnation represents a cost-effective way to increase the durability of concrete structures in cases where insufficient design cover quality and depth have been achieved. The water repellent product lines the internal capillary pore structure and provides a water-repellent concrete surface. Thus, the risk of reinforcement corrosion initiation and subsequent deterioration can be reduced as the ingress of water-dissolved aggressive species (chlorides) is minimised or prevented. The purpose of this study was to investigate the effect of silane impregnation on durability indicators, including penetrability tests and chloride ingress (bulk diffusion). The results indicate that silane impregnation reduces capillary absorption and conductivity of chloride ions. Similarly, chloride ingress in the treated concrete mixes was suppressed.
© The Authors, published by EDP Sciences, 2018
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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