NONDESTRUCTIVE MEASURING INSTRUMENT AND METHOD FOR CONCRETE RIGIDITY BY BALL HAMMERING

摘要

PROBLEM TO BE SOLVED: To provide a nondestructive measuring instrument and method for concrete rigidity by ball hammering, which can efficiently and highly precisely measure the rigidity of a concrete structure. SOLUTION: This nondestructive measuring instrument is provided with a ball type hammer 1 hammering the surface of the concrete structure 10, a sensor for sampling an impact signal when hammering the structure by the hammer 1 and a control device 3 deducing the rigidity of the concrete structure from the impact signal sampled by the sensor based on Hertz impact theory. COPYRIGHT: (C)2004,JPO