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

Ardalan, R. Bani and Jamshidi, N. and Arabameri, H. and Joshaghani, A. and 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. ISSN 0950-0618

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.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 19 Nov 2017 23:55
Last Modified: 23 Apr 2018 03:45
Uncontrolled Keywords: nano-SiO2; nanosilicon spray; concrete treatment; permeability; abrasion resistance; SEM
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
Identification Number or DOI: 10.1016/j.conbuildmat.2017.04.078
URI: http://eprints.usq.edu.au/id/eprint/32719

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