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http://dx.doi.org/10.14190/JRCR.2014.2.2.107

Strength Development of the Concrete Incorporating Blast Furnace Slag and Recycled Aggregate as Alkali Activator  

Kim, Jun-Ho (Dept. of Architectural Engineering, Cheong-ju Univ.)
Han, Min-Cheol (Eng., Dept. of Architectural Engineering, Cheong-ju Univ.)
Han, Cheon-Goo (Eng., Dept. of Architectural Engineering, Cheong-ju Univ.)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.2, no.2, 2014 , pp. 107-114 More about this Journal
Abstract
The objective of this study is to evaluate the strength development of blast furnace slag concrete in response to the use of recycled aggregate as alkali activator. The influence of the amount of recycled aggregate was evaluated depending on different ratios of replacement for each RFA and RCA to NFA and NCA, respectively. The results indicated that as replacement of RFA and RCA increased, their strength exhibited to be increased. This was due to the fact that the latent hydraulic properties of blast furnace slag was activated by the alkali in recycled aggregates. However, in case of 365-days, it showed lower compressive strength than using NA(natural aggregates) which could be explained as the exhaustively use of alkali containing in RA. The specimens using RA showed about 90% of compressive strength comparing with specimens using NA.
Keywords
Blast furnace slag powder; Recycled aggregate; Strength development;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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