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Influence of Humidity on the Elastic Modulus and Axis Compressive Strength of Concrete in a Water Environment
Concrete structures are often in different humidity conditions that have a significant impact on the elastic modulus of concrete, therefore, systematic research on the evolution of the law of concrete elastic modulus under different humidity conditions is needed. In this study, the variation laws of...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7764903/ https://www.ncbi.nlm.nih.gov/pubmed/33327435 http://dx.doi.org/10.3390/ma13245696 |
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author | Zhang, Guohui Li, Changbing Wei, Hai Wang, Mingming Yang, Zhendong Gu, Yanshuang |
author_facet | Zhang, Guohui Li, Changbing Wei, Hai Wang, Mingming Yang, Zhendong Gu, Yanshuang |
author_sort | Zhang, Guohui |
collection | PubMed |
description | Concrete structures are often in different humidity conditions that have a significant impact on the elastic modulus of concrete, therefore, systematic research on the evolution of the law of concrete elastic modulus under different humidity conditions is needed. In this study, the variation laws of the water saturation of concrete specimens with strength grades C15, C20, and C30 were obtained, and then the influence laws of the water saturation on the concrete axial compressive strength were carried out, and the prediction model of elastic modulus of concrete with respect to water saturation was constructed. The results showed that the water saturation of concrete with strength grades C15, C20, and C30 increased with an extension of immersion time, and the water saturation showed an approximately linear rapid growth within three soaking hours, reaching 47.56%, 71.63%, and 47.29%, respectively. Note, the concrete reached saturation state when the soaking time was 240 h. The axial compressive strength with strength grades C15, C20, and C30 decreased with increased water saturation, and the axial compressive strength of saturated concrete decreased by 27.25%, 21.14%, and 20.76%, respectively, as compared with the dry state concrete. The elastic modulus of concrete with strength grades C15, C20, and C30 increased with increased water saturation, and the elastic modulus of saturated concrete was 1.18, 1.19, and 1.24 times higher than those of dry concrete, respectively. |
format | Online Article Text |
id | pubmed-7764903 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-77649032020-12-27 Influence of Humidity on the Elastic Modulus and Axis Compressive Strength of Concrete in a Water Environment Zhang, Guohui Li, Changbing Wei, Hai Wang, Mingming Yang, Zhendong Gu, Yanshuang Materials (Basel) Article Concrete structures are often in different humidity conditions that have a significant impact on the elastic modulus of concrete, therefore, systematic research on the evolution of the law of concrete elastic modulus under different humidity conditions is needed. In this study, the variation laws of the water saturation of concrete specimens with strength grades C15, C20, and C30 were obtained, and then the influence laws of the water saturation on the concrete axial compressive strength were carried out, and the prediction model of elastic modulus of concrete with respect to water saturation was constructed. The results showed that the water saturation of concrete with strength grades C15, C20, and C30 increased with an extension of immersion time, and the water saturation showed an approximately linear rapid growth within three soaking hours, reaching 47.56%, 71.63%, and 47.29%, respectively. Note, the concrete reached saturation state when the soaking time was 240 h. The axial compressive strength with strength grades C15, C20, and C30 decreased with increased water saturation, and the axial compressive strength of saturated concrete decreased by 27.25%, 21.14%, and 20.76%, respectively, as compared with the dry state concrete. The elastic modulus of concrete with strength grades C15, C20, and C30 increased with increased water saturation, and the elastic modulus of saturated concrete was 1.18, 1.19, and 1.24 times higher than those of dry concrete, respectively. MDPI 2020-12-14 /pmc/articles/PMC7764903/ /pubmed/33327435 http://dx.doi.org/10.3390/ma13245696 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 Zhang, Guohui Li, Changbing Wei, Hai Wang, Mingming Yang, Zhendong Gu, Yanshuang Influence of Humidity on the Elastic Modulus and Axis Compressive Strength of Concrete in a Water Environment |
title | Influence of Humidity on the Elastic Modulus and Axis Compressive Strength of Concrete in a Water Environment |
title_full | Influence of Humidity on the Elastic Modulus and Axis Compressive Strength of Concrete in a Water Environment |
title_fullStr | Influence of Humidity on the Elastic Modulus and Axis Compressive Strength of Concrete in a Water Environment |
title_full_unstemmed | Influence of Humidity on the Elastic Modulus and Axis Compressive Strength of Concrete in a Water Environment |
title_short | Influence of Humidity on the Elastic Modulus and Axis Compressive Strength of Concrete in a Water Environment |
title_sort | influence of humidity on the elastic modulus and axis compressive strength of concrete in a water environment |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7764903/ https://www.ncbi.nlm.nih.gov/pubmed/33327435 http://dx.doi.org/10.3390/ma13245696 |
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