A Case Study on Retarded Hardening of concrete Used Imported Cement

외국산시멘트 사용 콘크리트의 경화불량 원인에 대한 사례연구

In recent years, due to the construction boom the demand of cement is increasing suddenly and the use of imported cement is inevitable. But, because the quality of imported cement varies quite a lot, many problems have been encountered in construction fields. These problems include hardening retardation, lower early strength and crack of concrete. The object of this study is to explain causes for hardening retardation from a construction field case and propose a solution