초고층 현장 타설 콘크리트의 배합별 펌프 압송성 및 관내 압력 손실 분석에 관한 연구

초록

This study quantitatively evaluated the pumping characteristics of concrete used in high-rise structures by analyzing the pressure loss ratio and pumping height limit for high-strength concrete mixtures. Experimental results showed that the internal pressure of concrete decreased by approximately 55–92% along the pipeline, from the discharge point (0 m) to the 22nd floor (100 m). Mixtures with lower nominal strength exhibited higher pressure loss ratios but smaller absolute losses. When the maximum pump pressure was set to 180 bar, the predicted onset of discharge reduction occurred at approximately 205 m, 170 m, and 145 m for the 25-40-600, 25-50-600, and 25-60-600 mixtures, respectively. These findings indicate that the interaction between mix properties and pumping distance has a direct influence on the pumpability of concrete, providing fundamental data for optimizing pumping conditions and mix design in high-rise construction.

키워드