An Experimental Study on Crack Control of Core-wall Using 700kg/$\textrm{cm}^2$ Ultra High Strength Concrete

초고강도 콘크리트로 타설된 내부코아 벽체의 균열발생 및 제어에 관한 실험적 연구

This paper presents the experimental study on crack control of core-wall placed with 700kg/$\textrm{cm}^2$ Ultra high strength concrete. The thermal sensors were installed into the core-walls prior to the concrete casting to measure the heat of hydration and atmospheric temperature whose difference might cause the initial crack. Several curing schemes were taken for each basement floor 8 thru 6 to examine the influence of curing method on the crack width, total crack length and the number of crack occurred. This paper demonstrates that the proper curing scheme have a great favorable effect on the initial crack control on the structural elements with noticiable reduction in crack width.