Repair and Protection of Existing Steel-Reinforced Concrete Structures with High-Strength, Textile-Reinforced Mortars
Numerous concrete monuments built in the High Modern Era (turn of the 20th century until the 1970s) must now be repaired for preservation. Traditional concrete repair according to current guidelines involves considerable material removal, changing the appearance of the existing structure. With a com...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/12/10/1615 |
| _version_ | 1797474667590582272 |
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| author | Markus Beßling Melanie Groh Viola Koch Michael Auras Jeanette Orlowsky Bernhard Middendorf |
| author_facet | Markus Beßling Melanie Groh Viola Koch Michael Auras Jeanette Orlowsky Bernhard Middendorf |
| author_sort | Markus Beßling |
| collection | DOAJ |
| description | Numerous concrete monuments built in the High Modern Era (turn of the 20th century until the 1970s) must now be repaired for preservation. Traditional concrete repair according to current guidelines involves considerable material removal, changing the appearance of the existing structure. With a combination of the material properties of high-/ultra-high-performance concrete (HPC/UHPC) with its dense microstructure and corrosion-free textile reinforcement (carbon and basalt), a high-performance mortar repair system can be developed. Such a system allows for concrete repairs with minimal material loss by using very thin layers that are durable and do not change the architectural character of the repaired monument. For the investigation of the load-bearing behaviour of a structural repair system using textile-reinforced, high-performance mortar, 20 mm thick slabs were produced and mechanically characterized. In the next step, the proposed repair system was applied to 70 mm thick old concrete slabs. The results show that a high surface tensile strength of 2.9 MPa was obtained. In a further step, the system will be applied to concrete pillars of transmission tower in Berus, adapted in terms of colour and structure and installed for long-term monitoring. |
| first_indexed | 2024-03-09T20:33:24Z |
| format | Article |
| id | doaj.art-c302755487954e769555867e727d2977 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-09T20:33:24Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-c302755487954e769555867e727d29772023-11-23T23:17:10ZengMDPI AGBuildings2075-53092022-10-011210161510.3390/buildings12101615Repair and Protection of Existing Steel-Reinforced Concrete Structures with High-Strength, Textile-Reinforced MortarsMarkus Beßling0Melanie Groh1Viola Koch2Michael Auras3Jeanette Orlowsky4Bernhard Middendorf5Chair of Building Materials, TU Dortmund University, August-Schmidt-Str. 8, 44227 Dortmund, GermanyChair of Building Materials, TU Dortmund University, August-Schmidt-Str. 8, 44227 Dortmund, GermanyDepartment of Structural Materials and Building Chemistry, University of Kassel, Moenchebergstr. 7, 34125 Kassel, GermanyInstitute for Stone Conservation e.V., Grosse Langgasse 29, 55116 Mainz, GermanyChair of Building Materials, TU Dortmund University, August-Schmidt-Str. 8, 44227 Dortmund, GermanyDepartment of Structural Materials and Building Chemistry, University of Kassel, Moenchebergstr. 7, 34125 Kassel, GermanyNumerous concrete monuments built in the High Modern Era (turn of the 20th century until the 1970s) must now be repaired for preservation. Traditional concrete repair according to current guidelines involves considerable material removal, changing the appearance of the existing structure. With a combination of the material properties of high-/ultra-high-performance concrete (HPC/UHPC) with its dense microstructure and corrosion-free textile reinforcement (carbon and basalt), a high-performance mortar repair system can be developed. Such a system allows for concrete repairs with minimal material loss by using very thin layers that are durable and do not change the architectural character of the repaired monument. For the investigation of the load-bearing behaviour of a structural repair system using textile-reinforced, high-performance mortar, 20 mm thick slabs were produced and mechanically characterized. In the next step, the proposed repair system was applied to 70 mm thick old concrete slabs. The results show that a high surface tensile strength of 2.9 MPa was obtained. In a further step, the system will be applied to concrete pillars of transmission tower in Berus, adapted in terms of colour and structure and installed for long-term monitoring.https://www.mdpi.com/2075-5309/12/10/1615repairtechnical textileshigh-performance concretetextile-reinforced concretecultural heritage |
| spellingShingle | Markus Beßling Melanie Groh Viola Koch Michael Auras Jeanette Orlowsky Bernhard Middendorf Repair and Protection of Existing Steel-Reinforced Concrete Structures with High-Strength, Textile-Reinforced Mortars Buildings repair technical textiles high-performance concrete textile-reinforced concrete cultural heritage |
| title | Repair and Protection of Existing Steel-Reinforced Concrete Structures with High-Strength, Textile-Reinforced Mortars |
| title_full | Repair and Protection of Existing Steel-Reinforced Concrete Structures with High-Strength, Textile-Reinforced Mortars |
| title_fullStr | Repair and Protection of Existing Steel-Reinforced Concrete Structures with High-Strength, Textile-Reinforced Mortars |
| title_full_unstemmed | Repair and Protection of Existing Steel-Reinforced Concrete Structures with High-Strength, Textile-Reinforced Mortars |
| title_short | Repair and Protection of Existing Steel-Reinforced Concrete Structures with High-Strength, Textile-Reinforced Mortars |
| title_sort | repair and protection of existing steel reinforced concrete structures with high strength textile reinforced mortars |
| topic | repair technical textiles high-performance concrete textile-reinforced concrete cultural heritage |
| url | https://www.mdpi.com/2075-5309/12/10/1615 |
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