In CFT construction, unlike the conventional method of RC construction, it is not possible to visually confirm the launch state of concrete after dismantling the formwork. Therefore, in the guideline, quality is ensured by establishing concrete specifications and construction method regulations. Therefore, we considered confirming the filling status of CFT concrete by the long and narrow wetting sensor monitoring system. As a result of the experiment, it was confirmed that the developed long and narrow wetting sensor monitoring system can estimate the filling status of the concrete under the diaphragm of the CFT construction.
