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Flexural Properties of Textile-Reinforced Concrete with Nonorthogonal Grids

Textile-reinforced concrete (TRC) is a cement-based composite material that uses textile as a reinforcement material. The weft-direction fiber bundles in the traditional orthogonally arranged warp–weft textile hardly bear force, and its bonding strength with the weft fiber bundle is not ideal. Under...

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Autores principales: Zhang, Tianqi, Wang, Boxin, Lu, Xinyu, Guo, Jiahuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9738490/
https://www.ncbi.nlm.nih.gov/pubmed/36501580
http://dx.doi.org/10.3390/polym14235185
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author Zhang, Tianqi
Wang, Boxin
Lu, Xinyu
Guo, Jiahuan
author_facet Zhang, Tianqi
Wang, Boxin
Lu, Xinyu
Guo, Jiahuan
author_sort Zhang, Tianqi
collection PubMed
description Textile-reinforced concrete (TRC) is a cement-based composite material that uses textile as a reinforcement material. The weft-direction fiber bundles in the traditional orthogonally arranged warp–weft textile hardly bear force, and its bonding strength with the weft fiber bundle is not ideal. Under the action of force, a small included angle between the stressed fiber bundle and the stressed direction can effectively increase the anchoring effect of their fibers in the matrix, resulting in higher bonding and reinforcement efficiency. To improve the utilization rate of fibers and the bonding strength between the textile and the concrete matrix, an arrangement along the diagonal of the grids was proposed in this paper. The flexural properties of basalt TRC plates with orthogonal grids (OG-BTRC) and plates with nonorthogonal grids (NOG-BTRC) with different grid angles and grid sizes with different laying methods, namely, a side layout (SL) and diagonal layout (DL), were studied through four-point bending tests. A comparative analysis was carried out with an ABAQUS simulation and the test results. The results showed that with a decrease in the grid angle, the BTRC specimens gradually showed a failure mode of multiple cracks, and most of the cracks appeared in the pure bending area; as the grid angle decreased, the BTRC specimens exhibited excellent flexural bearing capacity, good ductility, and high toughness. The total number of cracks on the specimen increased when it failed, while the spacing of the cracks decreased, and the fracture morphology appeared as fine and uniform features. The toughness of the specimen with a small grid angle using the DL laying method was greater than that using the SL laying method. The software simulation value matched the test data well, which proved that the test result was reliable.
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spelling pubmed-97384902022-12-11 Flexural Properties of Textile-Reinforced Concrete with Nonorthogonal Grids Zhang, Tianqi Wang, Boxin Lu, Xinyu Guo, Jiahuan Polymers (Basel) Article Textile-reinforced concrete (TRC) is a cement-based composite material that uses textile as a reinforcement material. The weft-direction fiber bundles in the traditional orthogonally arranged warp–weft textile hardly bear force, and its bonding strength with the weft fiber bundle is not ideal. Under the action of force, a small included angle between the stressed fiber bundle and the stressed direction can effectively increase the anchoring effect of their fibers in the matrix, resulting in higher bonding and reinforcement efficiency. To improve the utilization rate of fibers and the bonding strength between the textile and the concrete matrix, an arrangement along the diagonal of the grids was proposed in this paper. The flexural properties of basalt TRC plates with orthogonal grids (OG-BTRC) and plates with nonorthogonal grids (NOG-BTRC) with different grid angles and grid sizes with different laying methods, namely, a side layout (SL) and diagonal layout (DL), were studied through four-point bending tests. A comparative analysis was carried out with an ABAQUS simulation and the test results. The results showed that with a decrease in the grid angle, the BTRC specimens gradually showed a failure mode of multiple cracks, and most of the cracks appeared in the pure bending area; as the grid angle decreased, the BTRC specimens exhibited excellent flexural bearing capacity, good ductility, and high toughness. The total number of cracks on the specimen increased when it failed, while the spacing of the cracks decreased, and the fracture morphology appeared as fine and uniform features. The toughness of the specimen with a small grid angle using the DL laying method was greater than that using the SL laying method. The software simulation value matched the test data well, which proved that the test result was reliable. MDPI 2022-11-28 /pmc/articles/PMC9738490/ /pubmed/36501580 http://dx.doi.org/10.3390/polym14235185 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Tianqi
Wang, Boxin
Lu, Xinyu
Guo, Jiahuan
Flexural Properties of Textile-Reinforced Concrete with Nonorthogonal Grids
title Flexural Properties of Textile-Reinforced Concrete with Nonorthogonal Grids
title_full Flexural Properties of Textile-Reinforced Concrete with Nonorthogonal Grids
title_fullStr Flexural Properties of Textile-Reinforced Concrete with Nonorthogonal Grids
title_full_unstemmed Flexural Properties of Textile-Reinforced Concrete with Nonorthogonal Grids
title_short Flexural Properties of Textile-Reinforced Concrete with Nonorthogonal Grids
title_sort flexural properties of textile-reinforced concrete with nonorthogonal grids
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9738490/
https://www.ncbi.nlm.nih.gov/pubmed/36501580
http://dx.doi.org/10.3390/polym14235185
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AT guojiahuan flexuralpropertiesoftextilereinforcedconcretewithnonorthogonalgrids