Tensile Behavior of Hybrid Fiber-Reinforced Ultra-High-Performance Concrete

Thirty dog bone-shaped specimens were tested to study the effects of steel fiber mixed with seven kinds of non-metallic fibers on the tensile properties of ultra-high-performance concrete (UHPC). Through experiments and micromorphological analysis, the effects of hybrid fibers on the compressive str...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jiayue Li, Zongcai Deng
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	hybrid fiber ultra-high-performance concrete tensile behavior fracture energy microstructures Technology T
Acceso en línea:	https://doaj.org/article/2388294551244ebd9949fde4a1c79660
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:2388294551244ebd9949fde4a1c79660
record_format	dspace
spelling	oai:doaj.org-article:2388294551244ebd9949fde4a1c796602021-11-17T04:44:56ZTensile Behavior of Hybrid Fiber-Reinforced Ultra-High-Performance Concrete2296-801610.3389/fmats.2021.769579https://doaj.org/article/2388294551244ebd9949fde4a1c796602021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fmats.2021.769579/fullhttps://doaj.org/toc/2296-8016Thirty dog bone-shaped specimens were tested to study the effects of steel fiber mixed with seven kinds of non-metallic fibers on the tensile properties of ultra-high-performance concrete (UHPC). Through experiments and micromorphological analysis, the effects of hybrid fibers on the compressive strength, tensile strength, peak strain, fracture energy, and characteristic length of UHPC were analyzed. The results showed that the hybrid fiber-reinforced UHPC showed good ductile failure characteristics, which reflected the good crack resistance and toughening effect of different fibers. The tensile stress–strain curves of UHPC with different hybrid fibers can be divided into two parts: ascending section and softening section, and the softening section was greatly affected by the type and content of fibers. Basalt fiber with a diameter of 0.02 mm had the most obvious strengthening effect on UHPC, and polyvinyl alcohol fiber with a diameter of 0.2 mm and length of 8 mm had the best toughening effect. The mixing of steel fiber and non-metallic fiber cannot only reduce the preparation cost but also improve the fracture energy and toughness of UHPC.Jiayue LiZongcai DengFrontiers Media S.A.articlehybrid fiberultra-high-performance concretetensile behaviorfracture energymicrostructuresTechnologyTENFrontiers in Materials, Vol 8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	hybrid fiber ultra-high-performance concrete tensile behavior fracture energy microstructures Technology T
spellingShingle	hybrid fiber ultra-high-performance concrete tensile behavior fracture energy microstructures Technology T Jiayue Li Zongcai Deng Tensile Behavior of Hybrid Fiber-Reinforced Ultra-High-Performance Concrete
description	Thirty dog bone-shaped specimens were tested to study the effects of steel fiber mixed with seven kinds of non-metallic fibers on the tensile properties of ultra-high-performance concrete (UHPC). Through experiments and micromorphological analysis, the effects of hybrid fibers on the compressive strength, tensile strength, peak strain, fracture energy, and characteristic length of UHPC were analyzed. The results showed that the hybrid fiber-reinforced UHPC showed good ductile failure characteristics, which reflected the good crack resistance and toughening effect of different fibers. The tensile stress–strain curves of UHPC with different hybrid fibers can be divided into two parts: ascending section and softening section, and the softening section was greatly affected by the type and content of fibers. Basalt fiber with a diameter of 0.02 mm had the most obvious strengthening effect on UHPC, and polyvinyl alcohol fiber with a diameter of 0.2 mm and length of 8 mm had the best toughening effect. The mixing of steel fiber and non-metallic fiber cannot only reduce the preparation cost but also improve the fracture energy and toughness of UHPC.
format	article
author	Jiayue Li Zongcai Deng
author_facet	Jiayue Li Zongcai Deng
author_sort	Jiayue Li
title	Tensile Behavior of Hybrid Fiber-Reinforced Ultra-High-Performance Concrete
title_short	Tensile Behavior of Hybrid Fiber-Reinforced Ultra-High-Performance Concrete
title_full	Tensile Behavior of Hybrid Fiber-Reinforced Ultra-High-Performance Concrete
title_fullStr	Tensile Behavior of Hybrid Fiber-Reinforced Ultra-High-Performance Concrete
title_full_unstemmed	Tensile Behavior of Hybrid Fiber-Reinforced Ultra-High-Performance Concrete
title_sort	tensile behavior of hybrid fiber-reinforced ultra-high-performance concrete
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/2388294551244ebd9949fde4a1c79660
work_keys_str_mv	AT jiayueli tensilebehaviorofhybridfiberreinforcedultrahighperformanceconcrete AT zongcaideng tensilebehaviorofhybridfiberreinforcedultrahighperformanceconcrete
_version_	1718425975910301696

Tensile Behavior of Hybrid Fiber-Reinforced Ultra-High-Performance Concrete

Ejemplares similares