摘要
超声波双探头对测检测混凝土孔道缺陷,提出了声时系数概念,预应力孔道内不同填充物情况下声时、声程的变化。
Double probe of ultrasonic wave puts forward the changes conception of sound time coefficient as well as the of sound time and intensity under different packing material within prestressed aperture for detection of concrete＇s aperture - defects.
出处
《北方交通》
2009年第3期62-64,共3页
Northern Communications
关键词
预应力孔道
声时系数
缺陷
Prestressed aperture
Coefficient of sound time
Defects
