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A coupled multi-phy...
A coupled multi-physics model for creep, shrinkage and fracture of early-age concrete
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- Gasch, Tobias (författare)
- KTH,Betongbyggnad
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- Sjölander, Andreas (författare)
- KTH,Betongbyggnad
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- Malm, Richard (författare)
- KTH,Betongbyggnad
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visa fler...
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- Ansell, Anders (författare)
- KTH,Betongbyggnad
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visa färre...
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(creator_code:org_t)
- 2016
- 2016
- Engelska.
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Ingår i: 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures.
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- The behaviour of concrete at early-age is complex and involves several physical fieldssuch as temperature, moisture and deformations. In this paper a hygro-thermo-chemo-mechanicalmodel for the analysis of early-age concrete based on a combination of models from the literature ispresented. The chemical model is based on the reaction degree concept, also used to define internal actions such as self-desiccation and ageing of mechanical properties. A mechanical model based on the Microprestress-Solidification theory for concrete creep is used, that in a simplified manner alsoconsiders concrete fracture. The model has been implemented in a numerical framework suitable for coupled multi-physics problems. It is here applied to a case study of an un-reinforced concrete tunnel plug made of a low-pH self-compacting concrete. Good agreement is generally obtained with measurements and hypotheses previously made on the behaviour of the plug are verified.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Infrastrukturteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Infrastructure Engineering (hsv//eng)
Nyckelord
- Early-age
- Shrinkage
- Creep
- Fracture
- Multi-physics
- Case study
- Byggvetenskap
- Civil and Architectural Engineering
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)