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http://dx.doi.org/10.11112/jksmi.2012.16.6.124

Modeling on Compressive Strength in High Performance Concrete Using Porosity  

Lee, Hack Soo (한남대학교 건설시스템 공학과)
Kwon, Seung Jun (한남대학교 건설시스템 공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.16, no.6, 2012 , pp. 124-133 More about this Journal
Abstract
Compressive strength in concrete increases with time. Regression analysis with time is conventionally performed for strength evaluation and prediction. In this study, hydrate amount is assumed as a function of hydration rate and porosity, and modeling on compressive strength is carried out considering decreasing porosity with time, which does not need the regression analysis with time. For twenty one mix proportions of HPC (High Performance Concrete), DUCOM (FE program) which can simulate the behavior in early aged concrete is utilized, and porosity from each mix proportions is obtained with time. For HPC with OPC (Ordinary Portland Cement) concrete, modeling on compressive strength is performed considering hydration rate, unit content of cement, and porosity with time. For HPC with mineral admixtures, a long-term parameter which can handle long-term strength development is additionally considered. From the comparison with the previous test results, the applicability of the proposed model is verified.
Keywords
Compressive strength; High performance concrete; Porosity; Early aged concrete; Long term strength;
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Times Cited By KSCI : 2  (Citation Analysis)
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