| Summary: | 碩士 === 國立屏東技術學院 === 土木工程技術研究所 === 84 === This study is to measure the sound of impacting concrete
surface,and thro-ugh the transformation to get the frequency
characteristics of the sound wavesof the cavernous and normal
concrete test. From the frequency characteristics,the
researchers are able to check whether the concrete structures
have imper-fection. This measuring sound of impacting
concrete surface method can fastand roughly measure the whole
concrete structures. From the results of frequ-ency
characteristics,one can judge the damage areas inside concrete
structures,then use more accurate instrument to perform tests on
these areas, and decidewhere to maintain or reinforce. This
measuring sound of impacting concretesurface method is more
economic.
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