Durability of GFRP connectors under sustained compression load for use in sandwich walls
Precast concrete sandwich panels are used to fulfil the rising thermal requirements. The sandwich walls consist of three layers, a facing, a thermal insulation layer, and a load bearing layer. The two outer layers are coupled by connectors made of glass-fibre reinforced polymer. A lack of knowledge...
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| Format: | Article |
| Language: | English |
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CTU Central Library
2022-03-01
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| Series: | Acta Polytechnica CTU Proceedings |
| Subjects: | |
| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/7977 |
| _version_ | 1811329890305179648 |
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| author | Stefan Carstens Matthias Pahn |
| author_facet | Stefan Carstens Matthias Pahn |
| author_sort | Stefan Carstens |
| collection | DOAJ |
| description | Precast concrete sandwich panels are used to fulfil the rising thermal requirements. The sandwich walls consist of three layers, a facing, a thermal insulation layer, and a load bearing layer. The two outer layers are coupled by connectors made of glass-fibre reinforced polymer. A lack of knowledge about load-bearing behaviour prevents the removal of sustained compressive loads. In the context of this article, tests under sustained compressive load are presented. To represent closely the in service-conditions of sandwich walls, the examined connectors were subjected to a saturated alkaline concrete environment as well as to a specified stress level till failure occurs. Thus, the experimental setup combines alkaline resistance and creep rupture tests into one comprehensive testing. By using temperature effects as an accelerating factor, reasonable test durations were enabled. The obtained time to failure line was determined to extrapolate the characteristic values of the long-term strength for a service life up to 50 years. The test results are compared and evaluated with existing test results under a sustained tensile load. |
| first_indexed | 2024-04-13T15:51:59Z |
| format | Article |
| id | doaj.art-83ddc0b9a13f40588713813e36efb329 |
| institution | Directory Open Access Journal |
| issn | 2336-5382 |
| language | English |
| last_indexed | 2024-04-13T15:51:59Z |
| publishDate | 2022-03-01 |
| publisher | CTU Central Library |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj.art-83ddc0b9a13f40588713813e36efb3292022-12-22T02:40:49ZengCTU Central LibraryActa Polytechnica CTU Proceedings2336-53822022-03-0133586210.14311/APP.2022.33.00585217Durability of GFRP connectors under sustained compression load for use in sandwich wallsStefan Carstens0Matthias Pahn1Technische Universität Kaiserslautern, Department of Civil Engineering, Erwin-Schrödinger-Straße 52, 67663 Kaiserslautern, GermanyTechnische Universität Kaiserslautern, Department of Civil Engineering, Erwin-Schrödinger-Straße 52, 67663 Kaiserslautern, GermanyPrecast concrete sandwich panels are used to fulfil the rising thermal requirements. The sandwich walls consist of three layers, a facing, a thermal insulation layer, and a load bearing layer. The two outer layers are coupled by connectors made of glass-fibre reinforced polymer. A lack of knowledge about load-bearing behaviour prevents the removal of sustained compressive loads. In the context of this article, tests under sustained compressive load are presented. To represent closely the in service-conditions of sandwich walls, the examined connectors were subjected to a saturated alkaline concrete environment as well as to a specified stress level till failure occurs. Thus, the experimental setup combines alkaline resistance and creep rupture tests into one comprehensive testing. By using temperature effects as an accelerating factor, reasonable test durations were enabled. The obtained time to failure line was determined to extrapolate the characteristic values of the long-term strength for a service life up to 50 years. The test results are compared and evaluated with existing test results under a sustained tensile load.https://ojs.cvut.cz/ojs/index.php/APP/article/view/7977durabilitygfrp connectorsandwich wall sustained compression load |
| spellingShingle | Stefan Carstens Matthias Pahn Durability of GFRP connectors under sustained compression load for use in sandwich walls Acta Polytechnica CTU Proceedings durability gfrp connector sandwich wall sustained compression load |
| title | Durability of GFRP connectors under sustained compression load for use in sandwich walls |
| title_full | Durability of GFRP connectors under sustained compression load for use in sandwich walls |
| title_fullStr | Durability of GFRP connectors under sustained compression load for use in sandwich walls |
| title_full_unstemmed | Durability of GFRP connectors under sustained compression load for use in sandwich walls |
| title_short | Durability of GFRP connectors under sustained compression load for use in sandwich walls |
| title_sort | durability of gfrp connectors under sustained compression load for use in sandwich walls |
| topic | durability gfrp connector sandwich wall sustained compression load |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/7977 |
| work_keys_str_mv | AT stefancarstens durabilityofgfrpconnectorsundersustainedcompressionloadforuseinsandwichwalls AT matthiaspahn durabilityofgfrpconnectorsundersustainedcompressionloadforuseinsandwichwalls |