Investigation of the Deterioration of Medium-Rise-Wall Type Reinforced Concrete Buildings with External Insulation in Snowy Cold Districts
We have clarified that external insulation reduces the probability of reinforcement corrosion in reinforced concrete buildings in cold snowy districts by 45–78%. Renovation of external insulation is one of the effective methods for improving the insulation performance and durability of reinforced co...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/12/12/2048 |
| _version_ | 1797461151083134976 |
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| author | Yusuke Adachi Hideki Hirakawa Akira Fukushima Takeyoshi Uematsu Koki Kikuta Madoka Taniguchi |
| author_facet | Yusuke Adachi Hideki Hirakawa Akira Fukushima Takeyoshi Uematsu Koki Kikuta Madoka Taniguchi |
| author_sort | Yusuke Adachi |
| collection | DOAJ |
| description | We have clarified that external insulation reduces the probability of reinforcement corrosion in reinforced concrete buildings in cold snowy districts by 45–78%. Renovation of external insulation is one of the effective methods for improving the insulation performance and durability of reinforced concrete buildings, but there are almost no data that demonstrate durability. Therefore, the carbonation depth and the cover depth were investigated for six medium-rise-wall type reinforced concrete buildings in Hokkaido, Japan, which had been refurbished for external insulation. As a result, it was clarified that the external insulation suppressed the carbonation depth by 30% or more, even when the bonding method of the external insulation was different. In addition, it was clarified that the external insulation further suppressed carbonation in walls where the carbonation depth tended to increase in snowy cold districts. Specifically, external insulation reduced carbonation by up to 35% on surfaces that tend to dry out due to sunlight, and by 49% on surfaces that are affected by water that deteriorates the concrete surface layer. |
| first_indexed | 2024-03-09T17:15:19Z |
| format | Article |
| id | doaj.art-7ef4475285634d31bf1976c1a50cc526 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-09T17:15:19Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-7ef4475285634d31bf1976c1a50cc5262023-11-24T13:40:55ZengMDPI AGBuildings2075-53092022-11-011212204810.3390/buildings12122048Investigation of the Deterioration of Medium-Rise-Wall Type Reinforced Concrete Buildings with External Insulation in Snowy Cold DistrictsYusuke Adachi0Hideki Hirakawa1Akira Fukushima2Takeyoshi Uematsu3Koki Kikuta4Madoka Taniguchi5Faculty of Engineering, Hokkai-Gakuen University, Sapporo 064-0926, JapanFaculty of Engineering, Hokkaido University of Science, Sapporo 006-8585, JapanFaculty of Engineering, Hokkaido University of Science, Sapporo 006-8585, JapanFaculty of Engineering, Hokkai-Gakuen University, Sapporo 064-0926, JapanFaculty of Engineering, Hokkaido University, Sapporo 060-8628, JapanHokkaido Research Organization, Building Research Department, Asahikawa 078-8801, JapanWe have clarified that external insulation reduces the probability of reinforcement corrosion in reinforced concrete buildings in cold snowy districts by 45–78%. Renovation of external insulation is one of the effective methods for improving the insulation performance and durability of reinforced concrete buildings, but there are almost no data that demonstrate durability. Therefore, the carbonation depth and the cover depth were investigated for six medium-rise-wall type reinforced concrete buildings in Hokkaido, Japan, which had been refurbished for external insulation. As a result, it was clarified that the external insulation suppressed the carbonation depth by 30% or more, even when the bonding method of the external insulation was different. In addition, it was clarified that the external insulation further suppressed carbonation in walls where the carbonation depth tended to increase in snowy cold districts. Specifically, external insulation reduced carbonation by up to 35% on surfaces that tend to dry out due to sunlight, and by 49% on surfaces that are affected by water that deteriorates the concrete surface layer.https://www.mdpi.com/2075-5309/12/12/2048external insulation renovationreinforced concrete buildingscarbonationcover thicknessinvestigation of deteriorationETICS |
| spellingShingle | Yusuke Adachi Hideki Hirakawa Akira Fukushima Takeyoshi Uematsu Koki Kikuta Madoka Taniguchi Investigation of the Deterioration of Medium-Rise-Wall Type Reinforced Concrete Buildings with External Insulation in Snowy Cold Districts Buildings external insulation renovation reinforced concrete buildings carbonation cover thickness investigation of deterioration ETICS |
| title | Investigation of the Deterioration of Medium-Rise-Wall Type Reinforced Concrete Buildings with External Insulation in Snowy Cold Districts |
| title_full | Investigation of the Deterioration of Medium-Rise-Wall Type Reinforced Concrete Buildings with External Insulation in Snowy Cold Districts |
| title_fullStr | Investigation of the Deterioration of Medium-Rise-Wall Type Reinforced Concrete Buildings with External Insulation in Snowy Cold Districts |
| title_full_unstemmed | Investigation of the Deterioration of Medium-Rise-Wall Type Reinforced Concrete Buildings with External Insulation in Snowy Cold Districts |
| title_short | Investigation of the Deterioration of Medium-Rise-Wall Type Reinforced Concrete Buildings with External Insulation in Snowy Cold Districts |
| title_sort | investigation of the deterioration of medium rise wall type reinforced concrete buildings with external insulation in snowy cold districts |
| topic | external insulation renovation reinforced concrete buildings carbonation cover thickness investigation of deterioration ETICS |
| url | https://www.mdpi.com/2075-5309/12/12/2048 |
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