Evaluation of Concrete Cracking due to Restrained Thermal Loading and Shrinkage

[wafiullah]

Evaluation of Concrete Cracking due to Restrained Thermal Loading and Shrinkage

Author: Ulrich Häußler-Combe and Jens Hartig | Size: 2 MB | Format: PDF

In general practice, for the crack control of reinforced concrete (RC) members, reinforcement corresponding to the internal forces that lead to single cracks must be provided. This approach is extended to the cases of restrained thermal loading and concrete shrinkage, which can be considered as peculiarities of imposed loading. Therefore, an analytical model for the case of direct tension is derived as an extension of the CEB-FIP Model Code 90 and Eurocode 2 approach, which distinguishes between crack development caused by thermal loading and shrinkage and the state of crack development with single cracks and the state of stabilized cracking. Basic examples are examined to illustrate the respective characteristic properties and mutual influence of imposed deformations, crack development, and stiffness. The model is validated based on a comparison with the experimental results.

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