Proceedings of the Korea Concrete Institute Conference (한국콘크리트학회:학술대회논문집)
- 1996.10a
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- Pages.95-100
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- 1996
Creep Strain of Containment Concrete Structure
원자로 격납건물 콘크리트의 크리이프 변형 특성
Abstract
Creep, drying shrinkage, modulus of elasiticity and Poisson's ratio of concrete are influenced by a number of factors such as mix type, member thickness, curing condition and loading cases. Particularly, creep and shrinkage in concrete have yet to be studied due to its complicated time-dependent properties. In this study, the concrete creep tests were carried out at varous ages of loading-7, 28, 90, 180 and 365 days in order to investigate and quantify its long-term properties. The test procedures and analysis of the test results were also described herein. The results of this study will enable A/E to calculate effective prestressing forces considering time-dependent prestressing loss and evaluate the structural integrity of the prestressing system using the representative values derived from this property test.
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