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Bond Stress–Slip Model of BFRP Grid to ECC

The bonding performance between a basalt fiber-reinforced composite material (BFRP) grid and an engineering cementitious composite (ECC) is the basis that affects the synergy between the two. However, the research on the bonding behavior between the FRP grid and ECC is limited; in particular, the th...

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Autores principales: Deng, Langni, Li, Taisheng, Zhong, Mengjun, Liao, Ling, Li, Hua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9696010/
https://www.ncbi.nlm.nih.gov/pubmed/36431450
http://dx.doi.org/10.3390/ma15227965
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author Deng, Langni
Li, Taisheng
Zhong, Mengjun
Liao, Ling
Li, Hua
author_facet Deng, Langni
Li, Taisheng
Zhong, Mengjun
Liao, Ling
Li, Hua
author_sort Deng, Langni
collection PubMed
description The bonding performance between a basalt fiber-reinforced composite material (BFRP) grid and an engineering cementitious composite (ECC) is the basis that affects the synergy between the two. However, the research on the bonding behavior between the FRP grid and ECC is limited; in particular, the theoretical study on the bond–slip intrinsic relationship model and a reliable anchorage length calculation equation is lacking. To study the bond–slip relationship between the BFRP grid and ECC material, we considered the parameters of BFRP grid thickness, anchorage length, ECC substrate protective layer thickness, and grid surface treatment, and conducted center pull-out tests on eight sets of specimens. By analyzing the characteristics of the bond–slip curve of the specimen, a bond–slip constitutive model between the BFRP grid and ECC was established. Combining the principle of equivalent strain energy, the calculation formula of the basic anchorage length of the BFRP grid in the ECC matrix was derived. Research shows that the bonding performance between the BFRP grid and ECC improves with the increase in the grid anchoring length, grid thickness, and ECC layer strength. Sand sticking on the surface of the BFRP grid can enhance the bonding force between the two. The established bond–slip constitutive model curve is in good agreement with the test curve. The bond–slip relationship between the BFRP grid and ECC can be described by the first two stages in the BPE model. The derived formula for calculating the basic anchorage length of the BFRP mesh in the ECC matrix is computationally verified to be reliable in prediction.
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spelling pubmed-96960102022-11-26 Bond Stress–Slip Model of BFRP Grid to ECC Deng, Langni Li, Taisheng Zhong, Mengjun Liao, Ling Li, Hua Materials (Basel) Article The bonding performance between a basalt fiber-reinforced composite material (BFRP) grid and an engineering cementitious composite (ECC) is the basis that affects the synergy between the two. However, the research on the bonding behavior between the FRP grid and ECC is limited; in particular, the theoretical study on the bond–slip intrinsic relationship model and a reliable anchorage length calculation equation is lacking. To study the bond–slip relationship between the BFRP grid and ECC material, we considered the parameters of BFRP grid thickness, anchorage length, ECC substrate protective layer thickness, and grid surface treatment, and conducted center pull-out tests on eight sets of specimens. By analyzing the characteristics of the bond–slip curve of the specimen, a bond–slip constitutive model between the BFRP grid and ECC was established. Combining the principle of equivalent strain energy, the calculation formula of the basic anchorage length of the BFRP grid in the ECC matrix was derived. Research shows that the bonding performance between the BFRP grid and ECC improves with the increase in the grid anchoring length, grid thickness, and ECC layer strength. Sand sticking on the surface of the BFRP grid can enhance the bonding force between the two. The established bond–slip constitutive model curve is in good agreement with the test curve. The bond–slip relationship between the BFRP grid and ECC can be described by the first two stages in the BPE model. The derived formula for calculating the basic anchorage length of the BFRP mesh in the ECC matrix is computationally verified to be reliable in prediction. MDPI 2022-11-11 /pmc/articles/PMC9696010/ /pubmed/36431450 http://dx.doi.org/10.3390/ma15227965 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
Deng, Langni
Li, Taisheng
Zhong, Mengjun
Liao, Ling
Li, Hua
Bond Stress–Slip Model of BFRP Grid to ECC
title Bond Stress–Slip Model of BFRP Grid to ECC
title_full Bond Stress–Slip Model of BFRP Grid to ECC
title_fullStr Bond Stress–Slip Model of BFRP Grid to ECC
title_full_unstemmed Bond Stress–Slip Model of BFRP Grid to ECC
title_short Bond Stress–Slip Model of BFRP Grid to ECC
title_sort bond stress–slip model of bfrp grid to ecc
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9696010/
https://www.ncbi.nlm.nih.gov/pubmed/36431450
http://dx.doi.org/10.3390/ma15227965
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