Interfacial Bond Behavior of Clay Brick Masonry Strengthened with CFRP
This study investigates the interfacial bond behavior of clay brick masonry strengthened with carbon fiber-reinforced polymer (CFRP) through single-side shear tests. Two specimen types (single bricks and masonry prisms) were tested under varying parameters, including bond length, bond width, mortar...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-03-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/15/5/809 |
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| author | Zhen Lei Hui Ma Yumin Luo Enmao Wang Haiyan Huang Li Zhang |
| author_facet | Zhen Lei Hui Ma Yumin Luo Enmao Wang Haiyan Huang Li Zhang |
| author_sort | Zhen Lei |
| collection | DOAJ |
| description | This study investigates the interfacial bond behavior of clay brick masonry strengthened with carbon fiber-reinforced polymer (CFRP) through single-side shear tests. Two specimen types (single bricks and masonry prisms) were tested under varying parameters, including bond length, bond width, mortar joints, and end anchorage. Experimental results revealed cohesive failure within the masonry substrate as the dominant failure mode. Mortar joints reduced bond strength by 12.1–24.6% and disrupted stress distribution, leading to discontinuous load–displacement curves and multiple strain peaks in CFRP sheets. Increasing bond width enhanced bond capacity by 16.3–75.4%, with greater improvements observed in single bricks compared with prisms. Bond capacity initially increased with bond length but plateaued (≤10% increase) beyond the effective bond length threshold. End anchorage provided limited enhancement (<14%). A semi-theoretical model incorporating a brick–mortar area proportion coefficient (χ) and energy release rate was proposed, demonstrating close alignment with experimental results. The findings highlight the critical influence of mortar joints and provide a refined framework for predicting interfacial bond strength in CFRP-reinforced masonry systems. |
| format | Article |
| id | doaj-art-dde382abaa864eec81f9e7d95f794055 |
| institution | OA Journals |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-dde382abaa864eec81f9e7d95f7940552025-08-20T02:04:36ZengMDPI AGBuildings2075-53092025-03-0115580910.3390/buildings15050809Interfacial Bond Behavior of Clay Brick Masonry Strengthened with CFRPZhen Lei0Hui Ma1Yumin Luo2Enmao Wang3Haiyan Huang4Li Zhang5School of Architecture and Urban Planning, Yunnan University, Kunming 650504, ChinaSchool of Architecture and Urban Planning, Yunnan University, Kunming 650504, ChinaSchool of Architecture and Urban Planning, Yunnan University, Kunming 650504, ChinaSchool of Architecture and Urban Planning, Yunnan University, Kunming 650504, ChinaSchool of Architecture and Urban Planning, Yunnan University, Kunming 650504, ChinaSchool of Architecture and Urban Planning, Yunnan University, Kunming 650504, ChinaThis study investigates the interfacial bond behavior of clay brick masonry strengthened with carbon fiber-reinforced polymer (CFRP) through single-side shear tests. Two specimen types (single bricks and masonry prisms) were tested under varying parameters, including bond length, bond width, mortar joints, and end anchorage. Experimental results revealed cohesive failure within the masonry substrate as the dominant failure mode. Mortar joints reduced bond strength by 12.1–24.6% and disrupted stress distribution, leading to discontinuous load–displacement curves and multiple strain peaks in CFRP sheets. Increasing bond width enhanced bond capacity by 16.3–75.4%, with greater improvements observed in single bricks compared with prisms. Bond capacity initially increased with bond length but plateaued (≤10% increase) beyond the effective bond length threshold. End anchorage provided limited enhancement (<14%). A semi-theoretical model incorporating a brick–mortar area proportion coefficient (χ) and energy release rate was proposed, demonstrating close alignment with experimental results. The findings highlight the critical influence of mortar joints and provide a refined framework for predicting interfacial bond strength in CFRP-reinforced masonry systems.https://www.mdpi.com/2075-5309/15/5/809CFRPmasonry structureinterfaceeffective bond lengthmortar joint |
| spellingShingle | Zhen Lei Hui Ma Yumin Luo Enmao Wang Haiyan Huang Li Zhang Interfacial Bond Behavior of Clay Brick Masonry Strengthened with CFRP Buildings CFRP masonry structure interface effective bond length mortar joint |
| title | Interfacial Bond Behavior of Clay Brick Masonry Strengthened with CFRP |
| title_full | Interfacial Bond Behavior of Clay Brick Masonry Strengthened with CFRP |
| title_fullStr | Interfacial Bond Behavior of Clay Brick Masonry Strengthened with CFRP |
| title_full_unstemmed | Interfacial Bond Behavior of Clay Brick Masonry Strengthened with CFRP |
| title_short | Interfacial Bond Behavior of Clay Brick Masonry Strengthened with CFRP |
| title_sort | interfacial bond behavior of clay brick masonry strengthened with cfrp |
| topic | CFRP masonry structure interface effective bond length mortar joint |
| url | https://www.mdpi.com/2075-5309/15/5/809 |
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