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http://dx.doi.org/10.4334/JKCI.2015.27.4.343

Durability Performance Evaluation On Early-Aged Concrete with Rice Husk Ash and Silica Fume  

Saraswathy, Velu (Corrosion Protection Division, Central Elctro Chemical Research Institute)
Kwon, Seung-Jun (Dept. of Civil Engineering, Hannam University)
Publication Information
Journal of the Korea Concrete Institute / v.27, no.4, 2015 , pp. 343-351 More about this Journal
Abstract
Currently, lots of researches have been performed for reducing cement usages due to increasing social/engineering problems caused by $CO_2$ emission. Supplementary cement materials like fly ash, slag, and silca fume are usually employed for cement replacement, and nowadays rice husk ash (RHA) is widely studied for enhancement of concrete performance as mineral admixture. In this paper, concrete samples with RHA and SF which is known for its engineering advantages are prepared and a resistance to chloride attack is evaluated in early-aged concrete. For the work, replacement ratios of 10~30% for RHA concrete and 2~8% for SF concrete are considered, and various durability tests such as density, void, sorptivity, current measurement, and chloride diffusion coefficient are performed including mechanical test like compressive and tensile strength. Replacement of RHA 10~15% shows better improvement of corrosion resistance and strength than that of SF 2~4% and normal concrete, which shows a strong applicability for utilization as construction materials.
Keywords
RHA(Rice Husk, Ash); Silica fume; Durability; Steel corrosion; Early-aged concrete;
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Times Cited By KSCI : 2  (Citation Analysis)
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