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Investigation of Early-Age Concrete Strength Development Using Hardening Accelerator
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 Title & Authors
Investigation of Early-Age Concrete Strength Development Using Hardening Accelerator
Kim, Gyu-Yong; Kim, Yong-Ro; Park, Jong-Ho;
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In this study, performance of hardening accelerator types which promote setting and hardening of cement has been reviewed in order to develop early age strength of concrete with compressive strength of 21~27 MPa after examination of strength development of the concrete at early age according to curing temperature and unit cement(binder) content. As results, soluble mineral salt showed better hardening acceleration effect than organic salt in the scope of this study. Also, hydration reaction accelerating effect of by Soluble mineral salt is effective on development of early age compressive strength and it was shown that the Pt`s hydration reaction accelerating effect was the best. Construction duration reduction can be expected by securing compressive strength for prevention of early aged freezing damage in 25hour-curing time under curing temperature at . Also, it was shown that compressive strength of specimen cured at was similar with plain specimen cured at . Therefore, it is expected that fuel costs and carbon dioxide can be reduced when the same construction duration is considered.
cold weather concrete;curing temperature;unit cement contents;early-age strength;hardening accelerator;
 Cited by
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