Analysis of Biaxial Mechanical Properties and Failure Criterion of Self-Compacting Concrete

Biaxial compression-compression, biaxial tension-compression and compression-shear tests were carried out on self-compacting concrete (SCC) using the rock true triaxial machine and compression-shear hydraulic servo machine to explore the biaxial mechanical properties of SCC. The failure modes and st...

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Autores principales:	Jun Zhang, Chen Li, Congxiang Zhu, Zhiqing Zhao
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	self-compacting concrete biaxial compression-compression biaxial tension-compression compression-shear experimental study strength criterion Technology T
Acceso en línea:	https://doaj.org/article/0dd20f8d48da461d899a915bab50c790
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spelling	oai:doaj.org-article:0dd20f8d48da461d899a915bab50c7902021-12-01T16:02:34ZAnalysis of Biaxial Mechanical Properties and Failure Criterion of Self-Compacting Concrete2296-801610.3389/fmats.2021.691342https://doaj.org/article/0dd20f8d48da461d899a915bab50c7902021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fmats.2021.691342/fullhttps://doaj.org/toc/2296-8016Biaxial compression-compression, biaxial tension-compression and compression-shear tests were carried out on self-compacting concrete (SCC) using the rock true triaxial machine and compression-shear hydraulic servo machine to explore the biaxial mechanical properties of SCC. The failure modes and stress-strain curves of SCC under different loading conditions were obtained through experiment. Based on the comparison with the biaxial loading test data of ordinary concrete, the following conclusions are drawn: the failure modes and failure mechanisms under biaxial compression-compression and biaxial tension-compression are similar between SCC and ordinary concrete. Under compression-shear loading, the oblique cracks formed on the lateral surface of the specimen parallel to the shear direction gradually increased and the friction marks on the shear failure section were gradually deepened with the increase of axial compression ratio. The development trend of the stress-strain curve in the principal stress direction was not related to the lateral stress. Under the influence of lateral compressive stress, the principal compressive stress of SCC was increased by 55.78% on average; under biaxial tension-compression, the principal tensile stress of SCC had a maximum reduction of 62.79%; and under the compression-shear action, the shear stress of SCC had a maximum increase of 3.35 times. Compared with the biaxial stress test data of ordinary concrete, it can be seen that the lateral compressive stress had a more significant effect on the principal stress of SCC under biaxial loading. Subsequently, the strength criterion equations of SCC under biaxial loading were proposed based on the principal stress space and octahedral space stress respectively, which have shown good applicability in practice.Jun ZhangChen LiCongxiang ZhuZhiqing ZhaoFrontiers Media S.A.articleself-compacting concretebiaxial compression-compressionbiaxial tension-compressioncompression-shearexperimental studystrength criterionTechnologyTENFrontiers in Materials, Vol 8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	self-compacting concrete biaxial compression-compression biaxial tension-compression compression-shear experimental study strength criterion Technology T
spellingShingle	self-compacting concrete biaxial compression-compression biaxial tension-compression compression-shear experimental study strength criterion Technology T Jun Zhang Chen Li Congxiang Zhu Zhiqing Zhao Analysis of Biaxial Mechanical Properties and Failure Criterion of Self-Compacting Concrete
description	Biaxial compression-compression, biaxial tension-compression and compression-shear tests were carried out on self-compacting concrete (SCC) using the rock true triaxial machine and compression-shear hydraulic servo machine to explore the biaxial mechanical properties of SCC. The failure modes and stress-strain curves of SCC under different loading conditions were obtained through experiment. Based on the comparison with the biaxial loading test data of ordinary concrete, the following conclusions are drawn: the failure modes and failure mechanisms under biaxial compression-compression and biaxial tension-compression are similar between SCC and ordinary concrete. Under compression-shear loading, the oblique cracks formed on the lateral surface of the specimen parallel to the shear direction gradually increased and the friction marks on the shear failure section were gradually deepened with the increase of axial compression ratio. The development trend of the stress-strain curve in the principal stress direction was not related to the lateral stress. Under the influence of lateral compressive stress, the principal compressive stress of SCC was increased by 55.78% on average; under biaxial tension-compression, the principal tensile stress of SCC had a maximum reduction of 62.79%; and under the compression-shear action, the shear stress of SCC had a maximum increase of 3.35 times. Compared with the biaxial stress test data of ordinary concrete, it can be seen that the lateral compressive stress had a more significant effect on the principal stress of SCC under biaxial loading. Subsequently, the strength criterion equations of SCC under biaxial loading were proposed based on the principal stress space and octahedral space stress respectively, which have shown good applicability in practice.
format	article
author	Jun Zhang Chen Li Congxiang Zhu Zhiqing Zhao
author_facet	Jun Zhang Chen Li Congxiang Zhu Zhiqing Zhao
author_sort	Jun Zhang
title	Analysis of Biaxial Mechanical Properties and Failure Criterion of Self-Compacting Concrete
title_short	Analysis of Biaxial Mechanical Properties and Failure Criterion of Self-Compacting Concrete
title_full	Analysis of Biaxial Mechanical Properties and Failure Criterion of Self-Compacting Concrete
title_fullStr	Analysis of Biaxial Mechanical Properties and Failure Criterion of Self-Compacting Concrete
title_full_unstemmed	Analysis of Biaxial Mechanical Properties and Failure Criterion of Self-Compacting Concrete
title_sort	analysis of biaxial mechanical properties and failure criterion of self-compacting concrete
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/0dd20f8d48da461d899a915bab50c790
work_keys_str_mv	AT junzhang analysisofbiaxialmechanicalpropertiesandfailurecriterionofselfcompactingconcrete AT chenli analysisofbiaxialmechanicalpropertiesandfailurecriterionofselfcompactingconcrete AT congxiangzhu analysisofbiaxialmechanicalpropertiesandfailurecriterionofselfcompactingconcrete AT zhiqingzhao analysisofbiaxialmechanicalpropertiesandfailurecriterionofselfcompactingconcrete
_version_	1718404794634207232

Analysis of Biaxial Mechanical Properties and Failure Criterion of Self-Compacting Concrete

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