混凝土内部缺陷对超声波声时声速的影响研究

Study on influence of concrete internal defects on acoustic time acoustic velocity

对混凝土构件进行检测试验,分析混凝土构件内部缺陷、损伤等情况对超声波声速和声时的影响。研究表明:混凝土构件内部裂缝的出现会使超声波声速降低;混凝土构件蜂窝、麻面等损伤区域的出现会使超声波声时增大。

Tests are conducted on concrete components to analyze the effects of defects,damages,etc. on the sound velocity and acoustic time of ultrasonic components. Studies have shown that： the occurrence of cracks in the concrete components will make the ultrasonic sound speed decrease; the occurrence of damage areas such as honeycomb components,hemp surface,etc.,will increase the ultrasonic sound.