A concrete pumping-up experiment for full-scale CFT column using two different mix designs of strength lower than 45 N/mm2 high-fluidity concrete with admixtures containing viscosity modifying agent was carried out to verify its applicability.
As results, it was verified that satisfactory filling property could be obtained even with admixtures containing viscosity modifying agent, coefficient of pumping-up resistance at the inlet was within the limits of CFT guideline, and strength correction value Sc considering variation of concrete strength near diaphragms was less than the recommended value in the CFT guideline.
