Development of Creep Deformations during Service Life: A Comparison of CLT and TCC Floor Constructions
Cross-laminated timber (CLT) slabs in residential buildings need additional weight, e.g., in the form of screeds or gravel layers, to fulfill the criterion for the highest impact-sound class. The additional mass is, however, not exploited for the load bearing behavior, but adds additional weight and...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Buildings |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-5309/12/2/239 |
| _version_ | 1797482116122935296 |
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| author | Eva Binder Wit Derkowski Thomas K. Bader |
| author_facet | Eva Binder Wit Derkowski Thomas K. Bader |
| author_sort | Eva Binder |
| collection | DOAJ |
| description | Cross-laminated timber (CLT) slabs in residential buildings need additional weight, e.g., in the form of screeds or gravel layers, to fulfill the criterion for the highest impact-sound class. The additional mass is, however, not exploited for the load bearing behavior, but adds additional weight and leads to an increased height of the floor construction. In this study, such a CLT floor construction with a construction height of 380 mm is compared with a composite slab consisting of a CLT plate with a concrete layer on top with a floor construction height of 330 mm. The timber concrete composite (TCC) slab has a different creep behavior than the CLT slab. Thus, the development of the time-dependent deflections over the service life are of interest. A straightforward hybrid approach is developed, which exploits advanced multiscale-based material models for the individual composite layers and a standardized structural analysis method for the structural slab to model its linear creep behavior. The introduced approach allows to investigate load redistribution between the layers of the composite structure and the evolution of the deflection of the slab during the service life. The investigated slab types show a similar deflection after 50 years, while the development of the deflections over time are different. The CLT slab has a smaller overall stiffness at the beginning but a smaller decrease in stiffness over time than the investigated TCC slab. |
| first_indexed | 2024-03-09T22:24:43Z |
| format | Article |
| id | doaj.art-092352e10496479fa0e87390552ce13f |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-09T22:24:43Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-092352e10496479fa0e87390552ce13f2023-11-23T19:07:08ZengMDPI AGBuildings2075-53092022-02-0112223910.3390/buildings12020239Development of Creep Deformations during Service Life: A Comparison of CLT and TCC Floor ConstructionsEva Binder0Wit Derkowski1Thomas K. Bader2Department of Building Technology, Linnæus University, 351 95 Växjö, SwedenDepartment of Building Technology, Linnæus University, 351 95 Växjö, SwedenDepartment of Building Technology, Linnæus University, 351 95 Växjö, SwedenCross-laminated timber (CLT) slabs in residential buildings need additional weight, e.g., in the form of screeds or gravel layers, to fulfill the criterion for the highest impact-sound class. The additional mass is, however, not exploited for the load bearing behavior, but adds additional weight and leads to an increased height of the floor construction. In this study, such a CLT floor construction with a construction height of 380 mm is compared with a composite slab consisting of a CLT plate with a concrete layer on top with a floor construction height of 330 mm. The timber concrete composite (TCC) slab has a different creep behavior than the CLT slab. Thus, the development of the time-dependent deflections over the service life are of interest. A straightforward hybrid approach is developed, which exploits advanced multiscale-based material models for the individual composite layers and a standardized structural analysis method for the structural slab to model its linear creep behavior. The introduced approach allows to investigate load redistribution between the layers of the composite structure and the evolution of the deflection of the slab during the service life. The investigated slab types show a similar deflection after 50 years, while the development of the deflections over time are different. The CLT slab has a smaller overall stiffness at the beginning but a smaller decrease in stiffness over time than the investigated TCC slab.https://www.mdpi.com/2075-5309/12/2/239serviceability limit statecross-laminated timbertimber concrete compositegamma-methodlinear viscoelasticity |
| spellingShingle | Eva Binder Wit Derkowski Thomas K. Bader Development of Creep Deformations during Service Life: A Comparison of CLT and TCC Floor Constructions Buildings serviceability limit state cross-laminated timber timber concrete composite gamma-method linear viscoelasticity |
| title | Development of Creep Deformations during Service Life: A Comparison of CLT and TCC Floor Constructions |
| title_full | Development of Creep Deformations during Service Life: A Comparison of CLT and TCC Floor Constructions |
| title_fullStr | Development of Creep Deformations during Service Life: A Comparison of CLT and TCC Floor Constructions |
| title_full_unstemmed | Development of Creep Deformations during Service Life: A Comparison of CLT and TCC Floor Constructions |
| title_short | Development of Creep Deformations during Service Life: A Comparison of CLT and TCC Floor Constructions |
| title_sort | development of creep deformations during service life a comparison of clt and tcc floor constructions |
| topic | serviceability limit state cross-laminated timber timber concrete composite gamma-method linear viscoelasticity |
| url | https://www.mdpi.com/2075-5309/12/2/239 |
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