The Study on the Properties of the Early Strength of the Concrete According to the Usage of Hardening Accelerator

경화촉진제 사용량에 따른 콘크리트의 조기강도 특성에 관한 연구

This study is to high early concrete development which reveals 14 MPa within 12 hours in order to reduce the mold time of dismantlement and not do the steam curing of the precast concrete product. About (40~50) min could shorten the final setting time if the coagulation test result cement amount 100 kg/m3 was increased. In the case of the compressive strength, it was exposed to be satisfied the target value with the cement amount 500 kg/m3 combination according to the hardening accelerator addition.