Experimental Research on Interfacial Bonding Strength between Vertical Cast-In-Situ Joint and Precast Concrete Walls
In the monolithic precast concrete shear-wall structure, the bonding property of cast-in-situ joints to precast concrete walls is important to ensure the entire structural performance. Aiming to the vertical joint of precast concrete walls, an experimental study was carried out considering the facto...
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| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/11/5/494 |
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| author | Changyong Li Yabin Yang Jiuzhou Su Huidi Meng Liyun Pan Shunbo Zhao |
| author_facet | Changyong Li Yabin Yang Jiuzhou Su Huidi Meng Liyun Pan Shunbo Zhao |
| author_sort | Changyong Li |
| collection | DOAJ |
| description | In the monolithic precast concrete shear-wall structure, the bonding property of cast-in-situ joints to precast concrete walls is important to ensure the entire structural performance. Aiming to the vertical joint of precast concrete walls, an experimental study was carried out considering the factors including the strength of precast and joint concretes, as well as the interface processing and casting age of precast concrete. The micro-expansion self-compacting concrete was used for the cast-in-situ joints. The interfacial bonding strength between joint and precast concrete was measured by splitting tensile test. Results show that the interfacial bonding strength was benefited from the increasing strength of joint concrete and the spraying binder paste on the interface of precast concrete, and unbenefited from the overtime storage of precast concrete. The washed rough surface with exposed aggregates improved the interfacial bonding strength, which increased with the increasing roughness. Based on the test results, the limits of the strength grade of joint concrete and the roughness of washed rough surface are proposed to get the interfacial bonding strength equivalent to the tensile strength of precast concrete. Meanwhile, the spraying of binder paste on precast concrete is a good choice, the storage time of precast components is a better limit within 28 days. |
| first_indexed | 2024-03-10T11:52:36Z |
| format | Article |
| id | doaj.art-ef21b0d576ea4d8cbdfc1780759122c0 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T11:52:36Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-ef21b0d576ea4d8cbdfc1780759122c02023-11-21T17:37:09ZengMDPI AGCrystals2073-43522021-04-0111549410.3390/cryst11050494Experimental Research on Interfacial Bonding Strength between Vertical Cast-In-Situ Joint and Precast Concrete WallsChangyong Li0Yabin Yang1Jiuzhou Su2Huidi Meng3Liyun Pan4Shunbo Zhao5International Joint Research Laboratory for Eco-Building Materials and Engineering of Henan, School of Civil Engineering and Communications, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaInternational Joint Research Laboratory for Eco-Building Materials and Engineering of Henan, School of Civil Engineering and Communications, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaInternational Joint Research Laboratory for Eco-Building Materials and Engineering of Henan, School of Civil Engineering and Communications, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaInternational Joint Research Laboratory for Eco-Building Materials and Engineering of Henan, School of Civil Engineering and Communications, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaInternational Joint Research Laboratory for Eco-Building Materials and Engineering of Henan, School of Civil Engineering and Communications, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaInternational Joint Research Laboratory for Eco-Building Materials and Engineering of Henan, School of Civil Engineering and Communications, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaIn the monolithic precast concrete shear-wall structure, the bonding property of cast-in-situ joints to precast concrete walls is important to ensure the entire structural performance. Aiming to the vertical joint of precast concrete walls, an experimental study was carried out considering the factors including the strength of precast and joint concretes, as well as the interface processing and casting age of precast concrete. The micro-expansion self-compacting concrete was used for the cast-in-situ joints. The interfacial bonding strength between joint and precast concrete was measured by splitting tensile test. Results show that the interfacial bonding strength was benefited from the increasing strength of joint concrete and the spraying binder paste on the interface of precast concrete, and unbenefited from the overtime storage of precast concrete. The washed rough surface with exposed aggregates improved the interfacial bonding strength, which increased with the increasing roughness. Based on the test results, the limits of the strength grade of joint concrete and the roughness of washed rough surface are proposed to get the interfacial bonding strength equivalent to the tensile strength of precast concrete. Meanwhile, the spraying of binder paste on precast concrete is a good choice, the storage time of precast components is a better limit within 28 days.https://www.mdpi.com/2073-4352/11/5/494precast concrete wallinterfacial bonding strengthjoint concreteinterface processingwashed rough surfaceroughness |
| spellingShingle | Changyong Li Yabin Yang Jiuzhou Su Huidi Meng Liyun Pan Shunbo Zhao Experimental Research on Interfacial Bonding Strength between Vertical Cast-In-Situ Joint and Precast Concrete Walls Crystals precast concrete wall interfacial bonding strength joint concrete interface processing washed rough surface roughness |
| title | Experimental Research on Interfacial Bonding Strength between Vertical Cast-In-Situ Joint and Precast Concrete Walls |
| title_full | Experimental Research on Interfacial Bonding Strength between Vertical Cast-In-Situ Joint and Precast Concrete Walls |
| title_fullStr | Experimental Research on Interfacial Bonding Strength between Vertical Cast-In-Situ Joint and Precast Concrete Walls |
| title_full_unstemmed | Experimental Research on Interfacial Bonding Strength between Vertical Cast-In-Situ Joint and Precast Concrete Walls |
| title_short | Experimental Research on Interfacial Bonding Strength between Vertical Cast-In-Situ Joint and Precast Concrete Walls |
| title_sort | experimental research on interfacial bonding strength between vertical cast in situ joint and precast concrete walls |
| topic | precast concrete wall interfacial bonding strength joint concrete interface processing washed rough surface roughness |
| url | https://www.mdpi.com/2073-4352/11/5/494 |
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