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http://dx.doi.org/10.14190/JRCR.2021.9.4.419

Evaluation of Concrete Freeze and Thaw Resistance by Measuring Surface Rebound Value and Relative Dynamic Modulus of Elasticity  

Park, Ji-Sun (Department of Building Research, KICT)
Ahan, Ki-Hong (Department of Structural Engineering Research, KICT)
You, Young-Jun (Department of Structural Engineering Research, KICT)
Lee, Jong-Suk (Department of Structural Engineering Research, KICT)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.9, no.4, 2021 , pp. 419-424 More about this Journal
Abstract
This study investigated the possibility of early determination of frost damage on the concrete surface by using the rebound hardness method, widely used for estimation the compressive strength of concrete on the site. For this purpose, the surface damage of concrete was compared by measuring the rebound hardness and the relative dynamic modulus of the concrete for the multi-sided and single sided concrete surface exposed to freeze and thaw condition. Compared to the resonance vibration method, the rebound hardness method was able to show the frost damage 150 cycles quicker for the single-sided exposed concrete specimen and 50 cycles quicker for the multi-sided exposed concrete specimen. Therefore, it is considered that the rebound hardness method can determine the concrete surface damage more quickly than that of the resonance vibration method.
Keywords
Rebound hardness; Relative dynamic modulus; Freeze and thaw;
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  • Reference
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