Please use this identifier to cite or link to this item:
http://bura.brunel.ac.uk/handle/2438/13105
Title: | The Performance of Crystalline Hydrophobic in Wet Concrete Protection |
Authors: | Rahman, M Chamberlain, D |
Keywords: | Crystallization hydrophobic;impregnation;concrete protection;salt ponding;chloride content;durability;concrete bridge |
Issue Date: | 2016 |
Citation: | Journal of Materials in Civil Engineering, 2016 |
Abstract: | Reflecting the need to protect concrete structures from de-icing salt and freeze-thaw loading, the study introduced in this paper springs from the uncertainty that exists in the benefit of in-situ performance Iso-butylsilane as a protection material. It is likely that environmental loading and internal moisture at the time of application are the main contributory factors for under performance. This paper deals with alternative materials, a high solids silane and an aqueous crystallization solution, operating moisture driven crystallization mechanism rather than demanding a dry application regime. The results demonstrated similar substantial reducing performance of both materials at 0-5% moisture on medium (C25:25 N/mm2) and high strength (C40:40N/mm2) concrete. There is greater take-up of protective materials for C25 concrete compared with C40 concrete, together with greater chloride reduction, indicating that the level of achieved dosing is a significant factor. The similarity between the absorption of water and the two protection materials relative to initial water content, points to a possible basis for predicting achievable dossing of surface applied protection materials. The crystallization material achieved greater application volume and chloride reduction than the silane material. |
URI: | https://bura.brunel.ac.uk/handle/2438/13105 |
DOI: | http://doi.org/10.1061/(ASCE)MT.1943-5533.0001779 |
ISSN: | 1943-5533 |
Appears in Collections: | Dept of Mechanical and Aerospace Engineering Research Papers |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
FullText.pdf | 115.43 kB | Adobe PDF | View/Open |
Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.