Enhancing the permeability and abrasion resistance of concrete using colloidal nano-Si02 oxide and spraying nanosilicon practices

Article

Ardalan, R. Bani, Jamshidi, N., Arabameri, H., Joshaghani, A., Mehrinejad, M. and Sharafi, P.. 2017. "Enhancing the permeability and abrasion resistance of concrete using colloidal nano-Si02 oxide and spraying nanosilicon practices." Construction and Building Materials. 146, pp. 128-135. https://doi.org/10.1016/j.conbuildmat.2017.04.078
Article Title

Enhancing the permeability and abrasion resistance of concrete using colloidal nano-Si02 oxide and spraying nanosilicon practices

ERA Journal ID3470
Article CategoryArticle
AuthorsArdalan, R. Bani (Author), Jamshidi, N. (Author), Arabameri, H. (Author), Joshaghani, A. (Author), Mehrinejad, M. (Author) and Sharafi, P. (Author)
Journal TitleConstruction and Building Materials
Journal Citation146, pp. 128-135
Number of Pages8
Year2017
PublisherElsevier
Place of PublicationNetherlands
ISSN0950-0618
Digital Object Identifier (DOI)https://doi.org/10.1016/j.conbuildmat.2017.04.078
Abstract

By protecting concrete from penetration of aggressive chemicals, low permeability is one of the most important contributory factors to the concrete’s durability. In this paper the effects of nano-SiO2 particles on concrete permeability are studied through employing the technique of spraying nanosilicon and treatment in the water-diluted nano-SiO2 oxide. To this end, some mechanical and microstructure properties of concrete are investigated. The results show that the compression strength and the resistance of specimens to water penetration are significantly increased, whether in the mixtures cured in the colloidal solution or those being sprayed with nano-SiO2. The minute dimensions of these particles allow them
to penetrate up to a particular depth in a concrete panel. Hence, through improvement of concrete panel nanostructures, these particles participate in the completion of the hydration process, which in turn leads to a reduction in their permeability and development of a protective layer, and therefore the increase of bulk concrete panel durability. The experiment’s outcomes also develop thorough understanding of the effects of nano-SiO2 as an additive material after preparing the concrete and during the curing process.

Keywordsnano-SiO2; nanosilicon spray; concrete treatment; permeability; abrasion resistance; SEM
ANZSRC Field of Research 2020400505. Construction materials
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Byline AffiliationsWestern Sydney University
Fiteon, Iran
Tarbiat Modares University, Iran
Texas A&M University, United States
Centre for Future Materials
Institution of OriginUniversity of Southern Queensland
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