Effect of nano-silica on the mechanical and transport properties of lightweight concrete

Du, Hongjian, Du, Suhuan, & Liu, Xuemei (2015) Effect of nano-silica on the mechanical and transport properties of lightweight concrete. Construction and Building Materials, 82, pp. 114-122.

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Abstract

This paper investigated the influence of nano-silica (NS) on the mechanical and transport properties of lightweight concrete (LWC). The resistance of LWC to water and chloride ions penetration was enhanced despite strength marginally increased. Water penetration depth, moisture sorptivity, chloride migration and diffusion coefficient was reduced by 23% and 49%, 23% and 10%, 5% and 0%, 22% and 12% compared to the two reference LWC mixes (pure cement and 60% slag blended cement), respectively with 1% NS. Such improvements were attributed to more compact microstructures because the micropore system was refined and the interface between aggregates and paste was enhanced.

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11 citations in Scopus
7 citations in Web of Science®
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ID Code: 82322
Item Type: Journal Article
Refereed: Yes
Keywords: Durability, Interfacial transition zone, Microstructure, Lightweight aggregate, Pozzolanic reaction
DOI: 10.1016/j.conbuildmat.2015.02.026
ISSN: 0950-0618
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2015 Elsevier Ltd.
Copyright Statement: NOTICE: this is the author’s version of a work that was accepted for publication in Construction and Building Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Construction and Building Materials, Volume 82, (1 May 2015), DOI: 10.1016/j.conbuildmat.2015.02.026
Deposited On: 08 Mar 2015 22:51
Last Modified: 01 May 2017 16:40

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