用超声纵波换能器测量混凝土动弹模量  

Determination of Dynamic Elastic Modulus of Concrete Using Ultrasonic P-Wave Transducer

作　　者：尹健[1] 童寿兴[2] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075 [2]同济大学材料科学与工程学院,上海200092

出　　处：《建筑材料学报》2006年第4期404-407,共4页Journal of Building Materials

摘　　要：选用普通超声纵波换能器并运用超声波平测法检测技术测量了混凝土的动弹模量;提出了一种取不同测距的接收波波峰相关散点、回归计算表面波的新方案;并验证了它能克服并排除试件底面及边界上的反射纵波对直达表面波的干扰.在同一试件上直接比对超声法、敲击法所测定的混凝土动弹模量的结果相当一致.Ultrasonic P-wave transducer and ultrasonic single side method were used to determine concrete dynamic elastic modulus. A new method for calculating R-wave velocity is proposed based on peaks of the received wave signal. The method can reduce the influence of the P-wave reflected by the bottom or external boundaries. Comparing the concrete elastic modulus obtained by ultrasonic method with tapping method, the results are consistent.

关 键 词：超声波 检测 混凝土 动弹模量 

分 类 号：TU502[建筑科学—建筑技术科学] TB551[理学—物理]