An efficient post-installed shear-strengthening solution for RC structural elements
Much of Europe’s building stock and infrastructure were constructed in the last century, often before strict design standards were adopted. Ageing materials, increased loading demands, sustainability requirements, and cost-efficiency goals further support the need for the retrofitting of existing re...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2025-01-01
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| Series: | MATEC Web of Conferences |
| Online Access: | https://www.matec-conferences.org/articles/matecconf/pdf/2025/03/matecconf_cs2025_11003.pdf |
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| author | Medeghini Filippo Ahrens Mark Alexander Palmeri Alessandro Singh Amol Mark Peter |
| author_facet | Medeghini Filippo Ahrens Mark Alexander Palmeri Alessandro Singh Amol Mark Peter |
| author_sort | Medeghini Filippo |
| collection | DOAJ |
| description | Much of Europe’s building stock and infrastructure were constructed in the last century, often before strict design standards were adopted. Ageing materials, increased loading demands, sustainability requirements, and cost-efficiency goals further support the need for the retrofitting of existing reinforced concrete (RC) structures rather than their demolition and replacement. Motivated by these considerations, a new post-installed (PI) shear strengthening system was developed. In this solution, threaded rods bonded in drilled holes act as a substitute for traditional cast-in (CI) stirrups. An extensive experimental campaign consisting of several large-scale beams was executed to rigorously assess and quantify the new system’s performance, leading to a “general construction technique permit” in Germany (Allgemeine Bauartgenehmigung, aBG). The campaign investigated experimentally the main parameters that influence the shear resistance in RC beams, namely: shear and longitudinal reinforcement ratios, effective depth, and concrete compressive strength. The longitudinal rebars in tension were instrumented, allowing detailed tracking of strains during all tests. Results were compared with current Eurocode 2 provisions for concrete members with shear reinforcement, demonstrating that the shear resistance mechanism of the new PI solution closely matches that of conventional CI stirrups, with similar structural performance, highlighting its effectiveness as an efficient retrofitting solution. |
| format | Article |
| id | doaj-art-fb85d41b1cc740a696640c2a7a2bbd0d |
| institution | OA Journals |
| issn | 2261-236X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj-art-fb85d41b1cc740a696640c2a7a2bbd0d2025-08-20T02:35:29ZengEDP SciencesMATEC Web of Conferences2261-236X2025-01-014091100310.1051/matecconf/202540911003matecconf_cs2025_11003An efficient post-installed shear-strengthening solution for RC structural elementsMedeghini Filippo0Ahrens Mark Alexander1Palmeri Alessandro2Singh Amol3Mark Peter4Institute of Concrete Structures, Ruhr University BochumInstitute of Concrete Structures, Ruhr University BochumAnchors Application Engineering, Hilti EntwicklungsgesellschaftAnchors Application Engineering, Hilti EntwicklungsgesellschaftInstitute of Concrete Structures, Ruhr University BochumMuch of Europe’s building stock and infrastructure were constructed in the last century, often before strict design standards were adopted. Ageing materials, increased loading demands, sustainability requirements, and cost-efficiency goals further support the need for the retrofitting of existing reinforced concrete (RC) structures rather than their demolition and replacement. Motivated by these considerations, a new post-installed (PI) shear strengthening system was developed. In this solution, threaded rods bonded in drilled holes act as a substitute for traditional cast-in (CI) stirrups. An extensive experimental campaign consisting of several large-scale beams was executed to rigorously assess and quantify the new system’s performance, leading to a “general construction technique permit” in Germany (Allgemeine Bauartgenehmigung, aBG). The campaign investigated experimentally the main parameters that influence the shear resistance in RC beams, namely: shear and longitudinal reinforcement ratios, effective depth, and concrete compressive strength. The longitudinal rebars in tension were instrumented, allowing detailed tracking of strains during all tests. Results were compared with current Eurocode 2 provisions for concrete members with shear reinforcement, demonstrating that the shear resistance mechanism of the new PI solution closely matches that of conventional CI stirrups, with similar structural performance, highlighting its effectiveness as an efficient retrofitting solution.https://www.matec-conferences.org/articles/matecconf/pdf/2025/03/matecconf_cs2025_11003.pdf |
| spellingShingle | Medeghini Filippo Ahrens Mark Alexander Palmeri Alessandro Singh Amol Mark Peter An efficient post-installed shear-strengthening solution for RC structural elements MATEC Web of Conferences |
| title | An efficient post-installed shear-strengthening solution for RC structural elements |
| title_full | An efficient post-installed shear-strengthening solution for RC structural elements |
| title_fullStr | An efficient post-installed shear-strengthening solution for RC structural elements |
| title_full_unstemmed | An efficient post-installed shear-strengthening solution for RC structural elements |
| title_short | An efficient post-installed shear-strengthening solution for RC structural elements |
| title_sort | efficient post installed shear strengthening solution for rc structural elements |
| url | https://www.matec-conferences.org/articles/matecconf/pdf/2025/03/matecconf_cs2025_11003.pdf |
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