CALIBRATION DEVICE OF RADIOISOTOPE MOISTURE METER FOR CONCRETE

摘要

PROBLEM TO BE SOLVED: To provide a calibration device capable of determining a coefficient of a calibration equation beforehand in using a radioisotope moisture meter for concrete. SOLUTION: The radioisotope moisture meter 2 clasped to one end of an imitation piping 1, of which both ends are extended by the connection of dummy pipes, filled with a concrete sample of which the moisture content must be measured having the same diameter as a pump pressure feed piping used in actual construction in a slidable manner is drawn along the imitation piping 1 by using the motor rotated at a constant speed arranged to the other end of the imitation piping 1 to develop a state measuring concrete flowing through a piping to make it possible to calculate the coefficient of actually used concrete.