Effect of steel fiber on impact resistance and durability of concrete containing nano-SiO2

Impact drop weight tests, rapid chloride migration coefficient tests, single-sided freeze–thaw tests, and mechanical property tests were performed to investigate the effect of the steel fiber (SF) content on the impact resistance and durability of concrete containing nano-SiO2 (NS). A fixed NS conte...

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Autores principales:	Zhang Peng, Zhang Hongsen, Cui Guo, Yue Xiaodong, Guo Jinjun, Hui David
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	concrete impact resistance durability steel fiber nano-sio2 Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801
Acceso en línea:	https://doaj.org/article/d2179c59b96141a2bb472e22d7822ab0
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spelling	oai:doaj.org-article:d2179c59b96141a2bb472e22d7822ab02021-12-05T14:10:57ZEffect of steel fiber on impact resistance and durability of concrete containing nano-SiO22191-909710.1515/ntrev-2021-0040https://doaj.org/article/d2179c59b96141a2bb472e22d7822ab02021-06-01T00:00:00Zhttps://doi.org/10.1515/ntrev-2021-0040https://doaj.org/toc/2191-9097Impact drop weight tests, rapid chloride migration coefficient tests, single-sided freeze–thaw tests, and mechanical property tests were performed to investigate the effect of the steel fiber (SF) content on the impact resistance and durability of concrete containing nano-SiO2 (NS). A fixed NS content of 3% and six SF contents in a range of 0–2.5% by volume were used. The impact resistance was measured based on the number of blows (N1, N2) and the impact energy. The durability of concrete includes its freeze–thaw resistance and chloride ion penetration resistance, which were appraised by the chloride ion diffusion coefficient (CDC) and relative dynamic elastic modulus (RDM), respectively. The ductility ratio was used to predict the impact resistance of concrete containing NS with different SF contents, and a linear relation between this ratio and the impact energy (R 2 = 0.853) was found. The experimental results indicated that SF could greatly improve the impact resistance of concrete. The addition of 2.0% SF increased N1 and N2 by 106 and 169%, respectively. In addition, an appropriate SF content significantly improved the durability of the concrete, including its frost resistance (especially in the middle and late freezing–thawing cycles) and chloride ion penetration resistance. An SF content of 1.5% was the optimum, decreasing the CDC of nano-concrete by 17.1% and minimizing the RDM loss. Moreover, the 1.5% SF content increased the compressive strength of concrete containing NS by 18.5%, whereas an SF content of 2.0% increased the splitting tensile strength and flexural strength by 77 and 20%, respectively. Furthermore, when the SF content exceeded a certain value, the improvement effect on these properties began to decrease and even became negative.Zhang PengZhang HongsenCui GuoYue XiaodongGuo JinjunHui DavidDe Gruyterarticleconcreteimpact resistancedurabilitysteel fibernano-sio2 TechnologyTChemical technologyTP1-1185Physical and theoretical chemistryQD450-801ENNanotechnology Reviews, Vol 10, Iss 1, Pp 504-517 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	concrete impact resistance durability steel fiber nano-sio2 Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801
spellingShingle	concrete impact resistance durability steel fiber nano-sio2 Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801 Zhang Peng Zhang Hongsen Cui Guo Yue Xiaodong Guo Jinjun Hui David Effect of steel fiber on impact resistance and durability of concrete containing nano-SiO2
description	Impact drop weight tests, rapid chloride migration coefficient tests, single-sided freeze–thaw tests, and mechanical property tests were performed to investigate the effect of the steel fiber (SF) content on the impact resistance and durability of concrete containing nano-SiO2 (NS). A fixed NS content of 3% and six SF contents in a range of 0–2.5% by volume were used. The impact resistance was measured based on the number of blows (N1, N2) and the impact energy. The durability of concrete includes its freeze–thaw resistance and chloride ion penetration resistance, which were appraised by the chloride ion diffusion coefficient (CDC) and relative dynamic elastic modulus (RDM), respectively. The ductility ratio was used to predict the impact resistance of concrete containing NS with different SF contents, and a linear relation between this ratio and the impact energy (R 2 = 0.853) was found. The experimental results indicated that SF could greatly improve the impact resistance of concrete. The addition of 2.0% SF increased N1 and N2 by 106 and 169%, respectively. In addition, an appropriate SF content significantly improved the durability of the concrete, including its frost resistance (especially in the middle and late freezing–thawing cycles) and chloride ion penetration resistance. An SF content of 1.5% was the optimum, decreasing the CDC of nano-concrete by 17.1% and minimizing the RDM loss. Moreover, the 1.5% SF content increased the compressive strength of concrete containing NS by 18.5%, whereas an SF content of 2.0% increased the splitting tensile strength and flexural strength by 77 and 20%, respectively. Furthermore, when the SF content exceeded a certain value, the improvement effect on these properties began to decrease and even became negative.
format	article
author	Zhang Peng Zhang Hongsen Cui Guo Yue Xiaodong Guo Jinjun Hui David
author_facet	Zhang Peng Zhang Hongsen Cui Guo Yue Xiaodong Guo Jinjun Hui David
author_sort	Zhang Peng
title	Effect of steel fiber on impact resistance and durability of concrete containing nano-SiO2
title_short	Effect of steel fiber on impact resistance and durability of concrete containing nano-SiO2
title_full	Effect of steel fiber on impact resistance and durability of concrete containing nano-SiO2
title_fullStr	Effect of steel fiber on impact resistance and durability of concrete containing nano-SiO2
title_full_unstemmed	Effect of steel fiber on impact resistance and durability of concrete containing nano-SiO2
title_sort	effect of steel fiber on impact resistance and durability of concrete containing nano-sio2
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/d2179c59b96141a2bb472e22d7822ab0
work_keys_str_mv	AT zhangpeng effectofsteelfiberonimpactresistanceanddurabilityofconcretecontainingnanosio2 AT zhanghongsen effectofsteelfiberonimpactresistanceanddurabilityofconcretecontainingnanosio2 AT cuiguo effectofsteelfiberonimpactresistanceanddurabilityofconcretecontainingnanosio2 AT yuexiaodong effectofsteelfiberonimpactresistanceanddurabilityofconcretecontainingnanosio2 AT guojinjun effectofsteelfiberonimpactresistanceanddurabilityofconcretecontainingnanosio2 AT huidavid effectofsteelfiberonimpactresistanceanddurabilityofconcretecontainingnanosio2
_version_	1718371569654300672

Effect of steel fiber on impact resistance and durability of concrete containing nano-SiO2

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