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Mechanical Properties and Shrinkage Behavior of Concrete-Containing Graphene-Oxide Nanosheets

Graphene oxide (GO) has been widely used as an additive due to its numerous unique properties. In this study, the compressive strength, flexural strength and elasticity modulus of concrete containing 0.02 wt%, 0.05 wt % and 0.08 wt % GO, and its dry shrinkage performance have been experimentally inv...

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Autores principales: Chen, Zengshun, Xu, Yemeng, Hua, Jianmin, Wang, Xu, Huang, Lepeng, Zhou, Xiao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7040785/
https://www.ncbi.nlm.nih.gov/pubmed/32012764
http://dx.doi.org/10.3390/ma13030590
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author Chen, Zengshun
Xu, Yemeng
Hua, Jianmin
Wang, Xu
Huang, Lepeng
Zhou, Xiao
author_facet Chen, Zengshun
Xu, Yemeng
Hua, Jianmin
Wang, Xu
Huang, Lepeng
Zhou, Xiao
author_sort Chen, Zengshun
collection PubMed
description Graphene oxide (GO) has been widely used as an additive due to its numerous unique properties. In this study, the compressive strength, flexural strength and elasticity modulus of concrete containing 0.02 wt%, 0.05 wt % and 0.08 wt % GO, and its dry shrinkage performance have been experimentally investigated. After the sample preparation, apparatus for compression test and flexural test were used to test the relevant properties of concrete containing GO. The dial indicators were used to measure the shrinkage of samples. The results indicate that GO can considerably improve the compressive strength, flexural strength, and elasticity modulus of concrete at the concrete age of 28 days by 4.04–12.65%, 3.8–7.38%, and 3.92–10.97%, respectively, which are substantially smaller than the increment at the age of 3 d by 5.02–21.51%, 4.25–13.06%, and 6.07–27.45% under a water-cement ratio of 0.35. It was also found that GO can increase the shrinkage strain of concrete. For example, at the age of 60 days, 0.02 wt%, 0.05 wt% and 0.08 wt% GO can increase the shrinkage strain of ordinary concrete by 1.99%, 5.79% and 7.45% respectively under a water-cement ratio of 0.49. The study has advanced our understanding on mechanical and shrinkage behavior of concrete containing GO.
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spelling pubmed-70407852020-03-09 Mechanical Properties and Shrinkage Behavior of Concrete-Containing Graphene-Oxide Nanosheets Chen, Zengshun Xu, Yemeng Hua, Jianmin Wang, Xu Huang, Lepeng Zhou, Xiao Materials (Basel) Article Graphene oxide (GO) has been widely used as an additive due to its numerous unique properties. In this study, the compressive strength, flexural strength and elasticity modulus of concrete containing 0.02 wt%, 0.05 wt % and 0.08 wt % GO, and its dry shrinkage performance have been experimentally investigated. After the sample preparation, apparatus for compression test and flexural test were used to test the relevant properties of concrete containing GO. The dial indicators were used to measure the shrinkage of samples. The results indicate that GO can considerably improve the compressive strength, flexural strength, and elasticity modulus of concrete at the concrete age of 28 days by 4.04–12.65%, 3.8–7.38%, and 3.92–10.97%, respectively, which are substantially smaller than the increment at the age of 3 d by 5.02–21.51%, 4.25–13.06%, and 6.07–27.45% under a water-cement ratio of 0.35. It was also found that GO can increase the shrinkage strain of concrete. For example, at the age of 60 days, 0.02 wt%, 0.05 wt% and 0.08 wt% GO can increase the shrinkage strain of ordinary concrete by 1.99%, 5.79% and 7.45% respectively under a water-cement ratio of 0.49. The study has advanced our understanding on mechanical and shrinkage behavior of concrete containing GO. MDPI 2020-01-27 /pmc/articles/PMC7040785/ /pubmed/32012764 http://dx.doi.org/10.3390/ma13030590 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Chen, Zengshun
Xu, Yemeng
Hua, Jianmin
Wang, Xu
Huang, Lepeng
Zhou, Xiao
Mechanical Properties and Shrinkage Behavior of Concrete-Containing Graphene-Oxide Nanosheets
title Mechanical Properties and Shrinkage Behavior of Concrete-Containing Graphene-Oxide Nanosheets
title_full Mechanical Properties and Shrinkage Behavior of Concrete-Containing Graphene-Oxide Nanosheets
title_fullStr Mechanical Properties and Shrinkage Behavior of Concrete-Containing Graphene-Oxide Nanosheets
title_full_unstemmed Mechanical Properties and Shrinkage Behavior of Concrete-Containing Graphene-Oxide Nanosheets
title_short Mechanical Properties and Shrinkage Behavior of Concrete-Containing Graphene-Oxide Nanosheets
title_sort mechanical properties and shrinkage behavior of concrete-containing graphene-oxide nanosheets
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7040785/
https://www.ncbi.nlm.nih.gov/pubmed/32012764
http://dx.doi.org/10.3390/ma13030590
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