| 摘要 |
PROBLEM TO BE SOLVED: To grasp a packed condition of a filling material using an ultrasonic wave before the filling material is cured, in execution of a foundation for arranging a base isolation device or the like. SOLUTION: The pulse (ultrasonic wave) is emitted toward a direction of concrete 8 filled in an under face of a base plate 5, the pulse reflected by the concrete 8 is received again by a probe, a defect part such as a void is thereby measured, and the concrete 8 is replenished to fill the void when the defect part such as the void is measured. COPYRIGHT: (C)2004,JPO
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