Investigation of shear performance of UHPC by direct shear tests

Wu, P; Wu, C; Liu, Z; Hao, H

Investigation of shear performance of UHPC by direct shear tests

Wu, P Wu, C

Liu, Z Hao, H

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Publication Type:: Journal Article
Citation:: Engineering Structures, 2019, 183 pp. 780 - 790
Issue Date:: 2019-03-15

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Field	Value	Language
dc.contributor.author	Wu, P	en_US
dc.contributor.author	Wu, C https://orcid.org/0000-0001-6786-7934	en_US
dc.contributor.author	Liu, Z	en_US
dc.contributor.author	Hao, H	en_US
dc.date.issued	2019-03-15	en_US
dc.identifier.citation	Engineering Structures, 2019, 183 pp. 780 - 790	en_US
dc.identifier.issn	0141-0296	en_US
dc.identifier.uri	http://hdl.handle.net/10453/135979
dc.description.abstract	© 2019 Elsevier Ltd Ultra-high performance concrete (UHPC) has been applied widely in modern structure construction. The outstanding mechanical properties of UHPC not only enable strong yet slim structural designs but also highlight its potential in protective structural constructions against extreme loads. In this study, the shear transfer behaviors of UHPC are investigated by push-off tests on Z-shaped specimens, investigating the influences of the microsteel fiber volume ratio and stirrup reinforcement ratio on the shear strength, shear slip, and shear crack width of UHPC. The test results indicate that using a microsteel fiber can enhance the shear strength of UHPC specimens. Within a reasonable range of the steel fiber volume ratio (optimum volume ratio ranges from 0% to 2.5% for microsteel fiber), the shear strength and shear slip of UHPC increase significantly, and the shear crack width reduces with an increasing steel fiber volume ratio. Additionally, the ductility, shear strength, and shear slip of UHPC increase significantly, and the shear crack width reduces with increasing stirrup ratio. Finally, the simplified empirical equations for the ultimate shear strengths of UHPC specimens are deduced, and indicate good agreement with the experimental results.	en_US
dc.relation	http://purl.org/au-research/grants/arc/DP140103525
dc.relation	http://purl.org/au-research/grants/arc/DP160104661
dc.relation.ispartof	Engineering Structures	en_US
dc.relation.isbasedon	10.1016/j.engstruct.2019.01.055	en_US
dc.subject.classification	Civil Engineering	en_US
dc.title	Investigation of shear performance of UHPC by direct shear tests	en_US
dc.type	Journal Article
utslib.citation.volume	183	en_US
utslib.for	0905 Civil Engineering	en_US
utslib.for	0912 Materials Engineering	en_US
utslib.for	0915 Interdisciplinary Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	183	en_US

Abstract:

© 2019 Elsevier Ltd Ultra-high performance concrete (UHPC) has been applied widely in modern structure construction. The outstanding mechanical properties of UHPC not only enable strong yet slim structural designs but also highlight its potential in protective structural constructions against extreme loads. In this study, the shear transfer behaviors of UHPC are investigated by push-off tests on Z-shaped specimens, investigating the influences of the microsteel fiber volume ratio and stirrup reinforcement ratio on the shear strength, shear slip, and shear crack width of UHPC. The test results indicate that using a microsteel fiber can enhance the shear strength of UHPC specimens. Within a reasonable range of the steel fiber volume ratio (optimum volume ratio ranges from 0% to 2.5% for microsteel fiber), the shear strength and shear slip of UHPC increase significantly, and the shear crack width reduces with an increasing steel fiber volume ratio. Additionally, the ductility, shear strength, and shear slip of UHPC increase significantly, and the shear crack width reduces with increasing stirrup ratio. Finally, the simplified empirical equations for the ultimate shear strengths of UHPC specimens are deduced, and indicate good agreement with the experimental results.

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http://hdl.handle.net/10453/135979