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http://dx.doi.org/10.11112/jksmi.2015.19.3.130

Experimental Study on Lateral Pressure Characteristics of a Formwork for High-Flowable and High-Strength Concrete  

Ko, Young-Kon (포스코건설 R&D Center)
Kim, Cheol-Hwan (포스코건설 R&D Center)
Hwang, Jae-Woong ((주)아이디엠이엔씨)
Yi, Seong-Tae (인하공업전문대학 토목환경과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.19, no.3, 2015 , pp. 130-138 More about this Journal
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.
Keywords
High-flowable concrete; High-strength concrete; Formwork; Lateral pressure; Casting height; Casting speed;
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