경화된 수중 비분리 콘크리트의 특성에 대한 기초적 연구 = Fundamental Study on the Characteristics of Hardened Antiwashout Underwater Concrete

다국어 초록 (Multilingual Abstract)

In general, the setting and hardening time of antiwashout underwater concrete in comparison with general concrete is seriously delated. Accordingly, the objective of this study is to compare the unit weights and compressive strength of antiwashout underwater concrete cured in fresh water, salt water(15℃)for 7 days,28 days, and 91 days respectively. In this study, the mixing design of antiwashout underwater concrete was performed with the admixtures(antiwashout underwater
agent, superplasticizer) of 7 companies to be easily obtained in domestiv area.
From the experiment results, plastivity of antiwashout underwater concrete placed by self leveling was considerably good, and unit weight of it was 2.285㎏/㎥ which is lighter than general concrete, Second, In ontrast with general concrete, com-pressive strength of antiwashout underwater concrete had steadily increased for 91days Finally, compressive strength of antiwashout underwater concrets was about 0.74∼0.77 of plain concrete and compressive strength of antiwashout underwater concrete cured in salt water was about 0.81∼0.84 of that in fresh water.