An investigation on mechanical and electrical properties and microstructure of Ultra-High Performance Concrete Containing Silica Fume and PVA Fiber

Ultra-high performance concrete (UHPC) is a new type of composite materials that can develop a compressive strength up to 200  MPa and high tensile strength around 10 MPa, given the low water-to-binder ratio (W/B). The fracture energy of UHPC can vary from 8560 to 40,000 J/m2, which is approximately...

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Autores principales:	Mir Alimohammad Mirgozar Langaroudi, s. Hosein Ghasemzadeh mosavinejad, Jalil Barandoust, Ardalan Ghanizadeh
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2021
Materias:	ultra-high performance concrete pva fibers silica fume microstructure electrical resistivity Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/c85b38c2d52d447b99df7032177712c3
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spelling	oai:doaj.org-article:c85b38c2d52d447b99df7032177712c32021-11-08T15:54:09ZAn investigation on mechanical and electrical properties and microstructure of Ultra-High Performance Concrete Containing Silica Fume and PVA Fiber2476-39772538-261610.22065/jsce.2019.144223.1635https://doaj.org/article/c85b38c2d52d447b99df7032177712c32021-02-01T00:00:00Zhttps://www.jsce.ir/article_82835_b81db34fff4b5ba6be7e635c3003fcd3.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616Ultra-high performance concrete (UHPC) is a new type of composite materials that can develop a compressive strength up to 200  MPa and high tensile strength around 10 MPa, given the low water-to-binder ratio (W/B). The fracture energy of UHPC can vary from 8560 to 40,000 J/m2, which is approximately 220 times greater than that of conventional mortar. Due to its superior properties, Ultra-high performance concrete has received great attention among researchers recently. Very high compressive strength leads to a significant weight loss of the structure and makes it possible to build slender structural elements. In this paper, the ultra-high performance fiber reinforced concrete specimens exposed to two different curing regimes, a 23°C limewater tank, and a 70°C hot-water tank. Then, the compressive and flexural strength and the electrical behavior of specimens were evaluated. Mechanical strength at the age of 28 days and six months were measured, in order to in conjunction with durability-related properties offer an overall view of UHPFRC characteristics. Results showed that the PVA fiber affected the mechanical strengths by preventing the propagation of cracks and by increasing the total porosity of the matrix. Moreover, its influence on resistivity was highly dependent on the concentration of silica fume particles.Mir Alimohammad Mirgozar Langaroudis. Hosein Ghasemzadeh mosavinejadJalil BarandoustArdalan GhanizadehIranian Society of Structrual Engineering (ISSE)articleultra-high performance concretepva fiberssilica fumemicrostructureelectrical resistivityBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 7, Iss شماره ویژه 4, Pp 244-259 (2021)
institution	DOAJ
collection	DOAJ
language	FA
topic	ultra-high performance concrete pva fibers silica fume microstructure electrical resistivity Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	ultra-high performance concrete pva fibers silica fume microstructure electrical resistivity Bridge engineering TG1-470 Building construction TH1-9745 Mir Alimohammad Mirgozar Langaroudi s. Hosein Ghasemzadeh mosavinejad Jalil Barandoust Ardalan Ghanizadeh An investigation on mechanical and electrical properties and microstructure of Ultra-High Performance Concrete Containing Silica Fume and PVA Fiber
description	Ultra-high performance concrete (UHPC) is a new type of composite materials that can develop a compressive strength up to 200  MPa and high tensile strength around 10 MPa, given the low water-to-binder ratio (W/B). The fracture energy of UHPC can vary from 8560 to 40,000 J/m2, which is approximately 220 times greater than that of conventional mortar. Due to its superior properties, Ultra-high performance concrete has received great attention among researchers recently. Very high compressive strength leads to a significant weight loss of the structure and makes it possible to build slender structural elements. In this paper, the ultra-high performance fiber reinforced concrete specimens exposed to two different curing regimes, a 23°C limewater tank, and a 70°C hot-water tank. Then, the compressive and flexural strength and the electrical behavior of specimens were evaluated. Mechanical strength at the age of 28 days and six months were measured, in order to in conjunction with durability-related properties offer an overall view of UHPFRC characteristics. Results showed that the PVA fiber affected the mechanical strengths by preventing the propagation of cracks and by increasing the total porosity of the matrix. Moreover, its influence on resistivity was highly dependent on the concentration of silica fume particles.
format	article
author	Mir Alimohammad Mirgozar Langaroudi s. Hosein Ghasemzadeh mosavinejad Jalil Barandoust Ardalan Ghanizadeh
author_facet	Mir Alimohammad Mirgozar Langaroudi s. Hosein Ghasemzadeh mosavinejad Jalil Barandoust Ardalan Ghanizadeh
author_sort	Mir Alimohammad Mirgozar Langaroudi
title	An investigation on mechanical and electrical properties and microstructure of Ultra-High Performance Concrete Containing Silica Fume and PVA Fiber
title_short	An investigation on mechanical and electrical properties and microstructure of Ultra-High Performance Concrete Containing Silica Fume and PVA Fiber
title_full	An investigation on mechanical and electrical properties and microstructure of Ultra-High Performance Concrete Containing Silica Fume and PVA Fiber
title_fullStr	An investigation on mechanical and electrical properties and microstructure of Ultra-High Performance Concrete Containing Silica Fume and PVA Fiber
title_full_unstemmed	An investigation on mechanical and electrical properties and microstructure of Ultra-High Performance Concrete Containing Silica Fume and PVA Fiber
title_sort	investigation on mechanical and electrical properties and microstructure of ultra-high performance concrete containing silica fume and pva fiber
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2021
url	https://doaj.org/article/c85b38c2d52d447b99df7032177712c3
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An investigation on mechanical and electrical properties and microstructure of Ultra-High Performance Concrete Containing Silica Fume and PVA Fiber

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