| 摘要 |
PURPOSE:To Judge the integrity of concrete easily and accurately by sampling and then analyzing propagation impact blow sound which is propagated through a concrete itself. CONSTITUTION:A sound reception 3A is laid out within a soundinsulation member 5 which is formed by a sound insulation material such as rubber and flexible constitution resin in a sound reception microphone 3. Then, the open terminal of the member 5 is brought closer to or adhered to the surface of a concrete 1, the surface of the concrete 1 to be measured is blown by a hammer member 2, and then propagation impact blow sound which is propagated through the concrete 1 itself is sampled while the sound is insulated. An analysis part 4 analyzes the propagation impact blow sound which is sampled by the microphone 3 acoustically to judge integrity of the concrete 1. |
