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Open AccessArticle

Inhibitory Effect of Waste Glass Powder on ASR Expansion Induced by Waste Glass Aggregate

State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
Department of Civil, Environmental and Geomatic Engineering, University College London, Gower Street, London WC1E 6BT, UK
China Construction Ready Mixed Concrete Co., Ltd., Wuhan 430074, China
Author to whom correspondence should be addressed.
Academic Editor: Prabir Sarker
Materials 2015, 8(10), 6849-6862;
Received: 18 July 2015 / Revised: 21 September 2015 / Accepted: 28 September 2015 / Published: 9 October 2015
(This article belongs to the Special Issue Utilisation of By-Product Materials in Concrete)
Detailed research is carried out to ascertain the inhibitory effect of waste glass powder (WGP) on alkali-silica reaction (ASR) expansion induced by waste glass aggregate in this paper. The alkali reactivity of waste glass aggregate is examined by two methods in accordance with the China Test Code SL352-2006. The potential of WGP to control the ASR expansion is determined in terms of mean diameter, specific surface area, content of WGP and curing temperature. Two mathematical models are developed to estimate the inhibitory efficiency of WGP. These studies show that there is ASR risk with an ASR expansion rate over 0.2% when the sand contains more than 30% glass aggregate. However, WGP can effectively control the ASR expansion and inhibit the expansion rate induced by the glass aggregate to be under 0.1%. The two mathematical models have good simulation results, which can be used to evaluate the inhibitory effect of WGP on ASR risk. View Full-Text
Keywords: glass powder; glass aggregate; alkali-silica reaction (ASR); inhibitory effect glass powder; glass aggregate; alkali-silica reaction (ASR); inhibitory effect
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Liu, S.; Wang, S.; Tang, W.; Hu, N.; Wei, J. Inhibitory Effect of Waste Glass Powder on ASR Expansion Induced by Waste Glass Aggregate. Materials 2015, 8, 6849-6862.

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