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- W626794018 abstract "Kritische Zwangspannungen in dicken Betonbauteilen entstehen vor allem im jungen Alter, wenn sich die mechanischen Eigenschaften des Betons noch entwickeln und sich gleichzeitig die Hydratationswaerme des Betons und die Temperatureinwirkung von aussen unguenstig ueberlagern. Mit dem vorgestellten experimentell gestuetzten FE-Berechnungsmodell wurden solche Temperaturspannungen bestimmt und konnten im Bauteilversuch durch direkt gemessene Spannungen validiert werden. Die Spannungsberechnung ermoeglicht so im praktischen Anwendungsfall die Vorausbestimmung der Zwangspannungen infolge Temperatur und die Auswahl geeigneter Massnahmen zur Verringerung der Rissgefahr. (A) ABSTRACT IN ENGLISH: Critical restraint stresses in concrete structures mainly occur at early ages when the development of the mechanical properties of concrete is still in progress. At that time the heat of hydration of concrete and the thermal influence of the environment can superpose unfavourably. Temperature stresses were calculated with an experimentally based FE-model presented in this contribution. The model was validated with stress measurements on massive concrete components. In practice it allows the prediction of restraint stresses caused by temperature which enables the reduction of cracking risk by the application of suitable measures. (A)" @default.
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- W626794018 date "2003-01-01" @default.
- W626794018 modified "2023-09-24" @default.
- W626794018 title "Temperaturspannungen in dicken Betonbauteilen im jungen Alter. Messung und Berechnung / Temperature stress in thick concrete structures at early ages - measurement and calculation" @default.
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