Effects of nano-modified polymer cement-based materials on the bending behavior of repaired concrete beams

As the use time of concrete structures increases, defects such as concrete cracks, corrosion and exposure of steel bars gradually appear, resulting in additional repair of concrete structures to increase their durability and life. In this article, the effects of nano-modified polymer cement-based ma...

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Autores principales:	Meng Tao, Lian Songsong, Yang Xiufen, Meng Ruitan
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	nano-modified polymer repaired concrete beam bending behavior Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801
Acceso en línea:	https://doaj.org/article/137a3f298eb54bb7a9b5aaf44d4d26bc
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spelling	oai:doaj.org-article:137a3f298eb54bb7a9b5aaf44d4d26bc2021-12-05T14:10:57ZEffects of nano-modified polymer cement-based materials on the bending behavior of repaired concrete beams2191-909710.1515/ntrev-2021-0024https://doaj.org/article/137a3f298eb54bb7a9b5aaf44d4d26bc2021-05-01T00:00:00Zhttps://doi.org/10.1515/ntrev-2021-0024https://doaj.org/toc/2191-9097As the use time of concrete structures increases, defects such as concrete cracks, corrosion and exposure of steel bars gradually appear, resulting in additional repair of concrete structures to increase their durability and life. In this article, the effects of nano-modified polymer cement-based materials as repair material on the bending behavior of repaired concrete beams were studied. Based on the moment, deflection, strain, surface quality and cracking development monitor of repaired concrete beams, the bending behavior of repaired beams with polymer, nano-modified polymer and fibers was compared and the failure mechanism of the beams was analyzed. The results showed that the nano-modified polymer cement-based materials are helpful in improving the performance of repaired beams, manifested by the increase in the ultimate bending moment and the significant improvement in the quality of the interface between repair and matrix concrete. Compared with polymer cement-based materials, nano-modified polymer cement-based materials result in a 27% increase in ultimate bending moment of the repaired beam and a 58% increase in cracking moment, while reducing the total number of cracks by 23% and the average width of cracks by 17% in the repaired beam. This article demonstrated the availability of nanomaterials for improving the loading behavior of structural components with polymer-modified cement-based materials.Meng TaoLian SongsongYang XiufenMeng RuitanDe Gruyterarticlenano-modified polymerrepaired concrete beambending behaviorTechnologyTChemical technologyTP1-1185Physical and theoretical chemistryQD450-801ENNanotechnology Reviews, Vol 10, Iss 1, Pp 292-303 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	nano-modified polymer repaired concrete beam bending behavior Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801
spellingShingle	nano-modified polymer repaired concrete beam bending behavior Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801 Meng Tao Lian Songsong Yang Xiufen Meng Ruitan Effects of nano-modified polymer cement-based materials on the bending behavior of repaired concrete beams
description	As the use time of concrete structures increases, defects such as concrete cracks, corrosion and exposure of steel bars gradually appear, resulting in additional repair of concrete structures to increase their durability and life. In this article, the effects of nano-modified polymer cement-based materials as repair material on the bending behavior of repaired concrete beams were studied. Based on the moment, deflection, strain, surface quality and cracking development monitor of repaired concrete beams, the bending behavior of repaired beams with polymer, nano-modified polymer and fibers was compared and the failure mechanism of the beams was analyzed. The results showed that the nano-modified polymer cement-based materials are helpful in improving the performance of repaired beams, manifested by the increase in the ultimate bending moment and the significant improvement in the quality of the interface between repair and matrix concrete. Compared with polymer cement-based materials, nano-modified polymer cement-based materials result in a 27% increase in ultimate bending moment of the repaired beam and a 58% increase in cracking moment, while reducing the total number of cracks by 23% and the average width of cracks by 17% in the repaired beam. This article demonstrated the availability of nanomaterials for improving the loading behavior of structural components with polymer-modified cement-based materials.
format	article
author	Meng Tao Lian Songsong Yang Xiufen Meng Ruitan
author_facet	Meng Tao Lian Songsong Yang Xiufen Meng Ruitan
author_sort	Meng Tao
title	Effects of nano-modified polymer cement-based materials on the bending behavior of repaired concrete beams
title_short	Effects of nano-modified polymer cement-based materials on the bending behavior of repaired concrete beams
title_full	Effects of nano-modified polymer cement-based materials on the bending behavior of repaired concrete beams
title_fullStr	Effects of nano-modified polymer cement-based materials on the bending behavior of repaired concrete beams
title_full_unstemmed	Effects of nano-modified polymer cement-based materials on the bending behavior of repaired concrete beams
title_sort	effects of nano-modified polymer cement-based materials on the bending behavior of repaired concrete beams
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/137a3f298eb54bb7a9b5aaf44d4d26bc
work_keys_str_mv	AT mengtao effectsofnanomodifiedpolymercementbasedmaterialsonthebendingbehaviorofrepairedconcretebeams AT liansongsong effectsofnanomodifiedpolymercementbasedmaterialsonthebendingbehaviorofrepairedconcretebeams AT yangxiufen effectsofnanomodifiedpolymercementbasedmaterialsonthebendingbehaviorofrepairedconcretebeams AT mengruitan effectsofnanomodifiedpolymercementbasedmaterialsonthebendingbehaviorofrepairedconcretebeams
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Effects of nano-modified polymer cement-based materials on the bending behavior of repaired concrete beams

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