Dynamic Compressive Strength Tests of Corroded SFRC Exposed to Drying–Wetting Cycles with a 37 mm Diameter SHPB

This study focuses on the dynamic compression performance of corroded steel fiber-reinforced concrete (SFRC) exposed to drying–wetting chloride cycles by a 37 mm diameter split Hopkinson pressure bar (SHPB) system. Three steel fiber contents (0.5%, 1.0%, 2.0%, by volume) were incorporated into concr...

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Main Authors:	Hui Chen, Xiangqiang Zhou, Qiang Li, Rui He, Xin Huang
Format:	Article
Language:	English
Published:	MDPI AG 2021-04-01
Series:	Materials
Subjects:	dynamic compressive strength corroded steel fiber-reinforced concrete (SFRC) drying–wetting cycles split Hopkinson pressure bar (SHPB)
Online Access:	https://www.mdpi.com/1996-1944/14/9/2267

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spelling	doaj-b1dad26d7620480b9e1f625dec24343b2021-04-27T23:06:04ZengMDPI AGMaterials1996-19442021-04-01142267226710.3390/ma14092267Dynamic Compressive Strength Tests of Corroded SFRC Exposed to Drying–Wetting Cycles with a 37 mm Diameter SHPBHui Chen0Xiangqiang Zhou1Qiang Li2Rui He3Xin Huang4Department of Architecture and Civil Engineering, Oujiang College, Wenzhou University, Wenzhou 325035, ChinaDepartment of Architecture and Civil Engineering, Oujiang College, Wenzhou University, Wenzhou 325035, ChinaCollege of Civil Engineering and Architecture, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, ChinaCollege of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310034, ChinaCollege of Architecture and Civil Engineering, Wenzhou University, Wenzhou 325035, ChinaThis study focuses on the dynamic compression performance of corroded steel fiber-reinforced concrete (SFRC) exposed to drying–wetting chloride cycles by a 37 mm diameter split Hopkinson pressure bar (SHPB) system. Three steel fiber contents (0.5%, 1.0%, 2.0%, by volume) were incorporated into concrete, and samples were subjected to drying–wetting cycles for different corrosion durations (30 days, 60 days, 90 days) after 28 days age. The sample damage mode, stress–strain curve and the dynamic compression performance of corroded SFRC were compared with plain concrete. Through the experimental data, strain-rate effect, fiber reinforcement effect and the corrosion duration influence on the impact compression property of SFRC were identified. The dynamic increase factor results of these samples were compared with the existing models in previous published literature. An empirical dynamic increase factor profile characterization model considering fiber content, corrosion duration and strain-rate is proposed.https://www.mdpi.com/1996-1944/14/9/2267dynamic compressive strengthcorroded steel fiber-reinforced concrete (SFRC)drying–wetting cyclessplit Hopkinson pressure bar (SHPB)
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Hui Chen Xiangqiang Zhou Qiang Li Rui He Xin Huang
spellingShingle	Hui Chen Xiangqiang Zhou Qiang Li Rui He Xin Huang Dynamic Compressive Strength Tests of Corroded SFRC Exposed to Drying–Wetting Cycles with a 37 mm Diameter SHPB Materials dynamic compressive strength corroded steel fiber-reinforced concrete (SFRC) drying–wetting cycles split Hopkinson pressure bar (SHPB)
author_facet	Hui Chen Xiangqiang Zhou Qiang Li Rui He Xin Huang
author_sort	Hui Chen
title	Dynamic Compressive Strength Tests of Corroded SFRC Exposed to Drying–Wetting Cycles with a 37 mm Diameter SHPB
title_short	Dynamic Compressive Strength Tests of Corroded SFRC Exposed to Drying–Wetting Cycles with a 37 mm Diameter SHPB
title_full	Dynamic Compressive Strength Tests of Corroded SFRC Exposed to Drying–Wetting Cycles with a 37 mm Diameter SHPB
title_fullStr	Dynamic Compressive Strength Tests of Corroded SFRC Exposed to Drying–Wetting Cycles with a 37 mm Diameter SHPB
title_full_unstemmed	Dynamic Compressive Strength Tests of Corroded SFRC Exposed to Drying–Wetting Cycles with a 37 mm Diameter SHPB
title_sort	dynamic compressive strength tests of corroded sfrc exposed to drying–wetting cycles with a 37 mm diameter shpb
publisher	MDPI AG
series	Materials
issn	1996-1944
publishDate	2021-04-01
description	This study focuses on the dynamic compression performance of corroded steel fiber-reinforced concrete (SFRC) exposed to drying–wetting chloride cycles by a 37 mm diameter split Hopkinson pressure bar (SHPB) system. Three steel fiber contents (0.5%, 1.0%, 2.0%, by volume) were incorporated into concrete, and samples were subjected to drying–wetting cycles for different corrosion durations (30 days, 60 days, 90 days) after 28 days age. The sample damage mode, stress–strain curve and the dynamic compression performance of corroded SFRC were compared with plain concrete. Through the experimental data, strain-rate effect, fiber reinforcement effect and the corrosion duration influence on the impact compression property of SFRC were identified. The dynamic increase factor results of these samples were compared with the existing models in previous published literature. An empirical dynamic increase factor profile characterization model considering fiber content, corrosion duration and strain-rate is proposed.
topic	dynamic compressive strength corroded steel fiber-reinforced concrete (SFRC) drying–wetting cycles split Hopkinson pressure bar (SHPB)
url	https://www.mdpi.com/1996-1944/14/9/2267
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Dynamic Compressive Strength Tests of Corroded SFRC Exposed to Drying–Wetting Cycles with a 37 mm Diameter SHPB

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