An experimental investigation into the effects of Cr2O3 and ZnO2 nanoparticles on the mechanical properties and durability of self-compacting mortar

Article

Yang, Jian, Mohseni, Ehsan, Behforouz, Babak and Mehrinejad Khotbehsara, Mojdeh. 2015. "An experimental investigation into the effects of Cr2O3 and ZnO2 nanoparticles on the mechanical properties and durability of self-compacting mortar ." International Journal of Materials Research. 106 (8), pp. 1-7. https://doi.org/10.3139/146.111245
Article Title

An experimental investigation into the effects of Cr2O3 and ZnO2 nanoparticles on the mechanical properties and durability of self-compacting mortar

ERA Journal ID123994
Article CategoryArticle
AuthorsYang, Jian (Author), Mohseni, Ehsan (Author), Behforouz, Babak (Author) and Mehrinejad Khotbehsara, Mojdeh (Author)
Journal TitleInternational Journal of Materials Research
Journal Citation106 (8), pp. 1-7
Number of Pages7
Year2015
Place of PublicationGermany
ISSN1862-5282
Digital Object Identifier (DOI)https://doi.org/10.3139/146.111245
Abstract

In this paper, the effects of using Cr2O3 and ZnO2 nanoparticles on the mechanical properties and durability of self-compacting mortars are investigated. A fraction of Portland cement was replaced with 1, 2, 3, 4 or 5 wt.% of either Cr2O3 or ZnO2 nanoparticles, and 25 wt.% fly ash. The rheological properties of these mortars were determined through the mini-slump flow diameter and V-funnel flow time tests. The mechanical and durability characteristics were evaluated by compressive and flexural strength, water absorption, electrical resistivity and rapid chloride permeability tests. The microstructure of the mortars was assessed through the use of scanning electron microscopy. The inclusion of 2 wt.% Cr2O3 or 4 wt.% ZnO2 nanoparticles had the best result in compressive and flexural strength tests. Also, mixtures containing either 3 wt.% of Cr2O3 or 5 wt.% of ZnO2 nanoparticles obtained the best result in terms of durability. It can be deduced that the properties of these mixtures are significantly improved by the addition of Cr2O3 and ZnO2 nanoparticles.

Keywordsself-compacting mortar; Cr2O3 nanoparticles; ZnO2 nanoparticles; mechanical properties; durability
ANZSRC Field of Research 2020400505. Construction materials
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Byline AffiliationsShanghai Jiao Tong University, China
University of Guilan, Iran
Islamic Azad University, Iran
Institution of OriginUniversity of Southern Queensland
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