Quasi-static and dynamic experimental studies on the tensile strength and failure pattern of concrete and mortar discs

Abstract As concrete and mortar materials widely used in structural engineering may suffer dynamic loadings, studies on their mechanical properties under different strain rates are of great importance. In this paper, based on splitting tests of Brazilian discs, the tensile strength and failure patte...

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Autores principales:	Xiaochao Jin, Cheng Hou, Xueling Fan, Chunsheng Lu, Huawei Yang, Xuefeng Shu, Zhihua Wang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/45cfaae7ce9144b199e29ca5d1e359ac
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spelling	oai:doaj.org-article:45cfaae7ce9144b199e29ca5d1e359ac2021-12-02T15:05:07ZQuasi-static and dynamic experimental studies on the tensile strength and failure pattern of concrete and mortar discs10.1038/s41598-017-15700-22045-2322https://doaj.org/article/45cfaae7ce9144b199e29ca5d1e359ac2017-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-15700-2https://doaj.org/toc/2045-2322Abstract As concrete and mortar materials widely used in structural engineering may suffer dynamic loadings, studies on their mechanical properties under different strain rates are of great importance. In this paper, based on splitting tests of Brazilian discs, the tensile strength and failure pattern of concrete and mortar were investigated under quasi-static and dynamic loadings with a strain rate of 1–200 s−1. It is shown that the quasi-static tensile strength of mortar is higher than that of concrete since coarse aggregates weaken the interface bonding strength of the latter. Numerical results confirmed that the plane stress hypothesis lead to a lower value tensile strength for the cylindrical specimens. With the increase of strain rates, dynamic tensile strengths of concrete and mortar significantly increase, and their failure patterns change form a single crack to multiple cracks and even fragment. Furthermore, a relationship between the dynamic increase factor and strain rate was established by using a linear fitting algorithm, which can be conveniently used to calculate the dynamic increase factor of concrete-like materials in engineering applications.Xiaochao JinCheng HouXueling FanChunsheng LuHuawei YangXuefeng ShuZhihua WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-15 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xiaochao Jin Cheng Hou Xueling Fan Chunsheng Lu Huawei Yang Xuefeng Shu Zhihua Wang Quasi-static and dynamic experimental studies on the tensile strength and failure pattern of concrete and mortar discs
description	Abstract As concrete and mortar materials widely used in structural engineering may suffer dynamic loadings, studies on their mechanical properties under different strain rates are of great importance. In this paper, based on splitting tests of Brazilian discs, the tensile strength and failure pattern of concrete and mortar were investigated under quasi-static and dynamic loadings with a strain rate of 1–200 s−1. It is shown that the quasi-static tensile strength of mortar is higher than that of concrete since coarse aggregates weaken the interface bonding strength of the latter. Numerical results confirmed that the plane stress hypothesis lead to a lower value tensile strength for the cylindrical specimens. With the increase of strain rates, dynamic tensile strengths of concrete and mortar significantly increase, and their failure patterns change form a single crack to multiple cracks and even fragment. Furthermore, a relationship between the dynamic increase factor and strain rate was established by using a linear fitting algorithm, which can be conveniently used to calculate the dynamic increase factor of concrete-like materials in engineering applications.
format	article
author	Xiaochao Jin Cheng Hou Xueling Fan Chunsheng Lu Huawei Yang Xuefeng Shu Zhihua Wang
author_facet	Xiaochao Jin Cheng Hou Xueling Fan Chunsheng Lu Huawei Yang Xuefeng Shu Zhihua Wang
author_sort	Xiaochao Jin
title	Quasi-static and dynamic experimental studies on the tensile strength and failure pattern of concrete and mortar discs
title_short	Quasi-static and dynamic experimental studies on the tensile strength and failure pattern of concrete and mortar discs
title_full	Quasi-static and dynamic experimental studies on the tensile strength and failure pattern of concrete and mortar discs
title_fullStr	Quasi-static and dynamic experimental studies on the tensile strength and failure pattern of concrete and mortar discs
title_full_unstemmed	Quasi-static and dynamic experimental studies on the tensile strength and failure pattern of concrete and mortar discs
title_sort	quasi-static and dynamic experimental studies on the tensile strength and failure pattern of concrete and mortar discs
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/45cfaae7ce9144b199e29ca5d1e359ac
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Quasi-static and dynamic experimental studies on the tensile strength and failure pattern of concrete and mortar discs

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