检测混凝土质量缺陷的雷达方法

本文采用透视雷达对混凝土结构中孔洞和裂缝等缺陷进行了探测。结果表明,用雷达法探测这类缺陷是一种极为有效的方法。雷达图像识别的依据主要是不同物体的雷达反射波在图像上会显示出不同的特征。本文通过试验模拟,对雷达反射波信号进行了2D切片分析和3D透视成像处理,在一定程度上克服了表面波等外界因素的干扰。分析结果表明,更清晰地得到了孔洞和裂缝的位置,进一步提高了图像解释的准确度。

ASSESSMENT OF DEFECTS IN CONCRETE WITH GROUND PROBING RADAR

Ground Probing Radar(GPR) method for non-destructive test of defects in concrete is described in this paper. The defects include various voids and cracks. The experimental results show that GPR is a promising technique for this application. The abnormality can be identified by the different characteristics of the reflected radar waves from various objects. The data has been processed by using the technique of 2D and 3D imaging in this simulation experiment. The results show that the technique can diminish the disturbances of surface waves and other external factors.The experimental results show that the positions of voids and cracks can be more accurately identified.And the images can be more accurately analyzed.