| 摘要 |
PROBLEM TO BE SOLVED: To provide a compression strength measuring method which enables the calculation of compression strength with accuracy. SOLUTION: The compression strength measurement method includes a step (S100) for installing a transmission probe, at a predetermined position on the predetermined surface of a concrete structure becoming a measuring target; a step (S101) for installing a reception probe, at a first position separated from the predetermined position by a predetermined distance; a step (S102) for producing ultrasonic vibration by the transmission probe and detecting the wave, based on the vibration by the reception probe to measure a first time being a vibration arriving time; a step (S103) for installing the reception probe at a second position separated from the first position by a first distance; a step (S104) for producing the ultrasonic vibration by the transmission probe and detecting the wave, based on the vibration by the reception probe to measure a second time being a vibration arriving time; a step (S105) for calculating the propagation speed of the waves, based on the vibration from the first time, the second time and the first distance; a step (S106) for calculating the compression strength of the concrete structure from the propagation speed. COPYRIGHT: (C)2010,JPO&INPIT
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