|
Title |
Experimental Study on Lateral Pressure Characteristics of a Formwork for High-Flowable and High-Strength Concrete
|
|
Authors |
고영곤(Young-Kon Ko) ; 김철환(Cheol-Hwan Kim) ; 황재웅(Jae-Woong Hwang) ; 이성태(Seong-Tae Yi) |
|
DOI |
http://dx.doi.org/10.11112/jksmi.2015.19.3.130 |
|
Keywords |
고유동 콘크리트 ; 고강도 콘크리트 ; 거푸집 ; 측압 ; 타설높이 ; 타설속도 High-flowable concrete ; High-strength concrete ; Formwork ; Lateral pressure ; Casting height ; Casting speed |
|
Abstract |
In this study, to examine the application of cast-in-place of high-flowable and high-strength concrete, an experimental study on the lateral pressure of a formwork was preformed. The experiment specimens, which have different casting height and casting speed were prepared. The lateral pressure and the change of temperature from test specimens were obtained. The maximum lateral pressure was shown to lateral pressure of fresh concrete. Immediately after placing, the lateral pressure starts to decrease and, after 12 hours, it showed a stabilization. The decreased tend of the lateral pressure was similar with normal-strength concrete, which appears stabilization after 3~4 hours from casting completion. The more casting speed is fast, the more maximum lateral pressure is high, but pressure reduction with the lapse of time was nearly similar. In addition, it was found that there was no direct relation between the hydration heat and the lateral pressure reduction.
|