地质雷达在水泥砼路面脱空检测中的应用

水泥砼路面易发生脱空、唧泥、裂缝等先期病害,导致路面破损,采取适当的方法对道路质量进行定期检测是必要的。地质雷达技术是一种先进的无损检测方法。应用其检测水泥砼路面的脱空可看作是路面厚度检测的延伸,可将路面厚度检测中的成熟经验引用过来。雷达波在板底脱空位置产生强反射,在剖面上十分醒目,容易识别。根据雷达反射波的振幅大小、相位特征,结合钻孔取芯结果,对脱空程度进行了归类,并进行半定量判别。

The Application of Ground Penetrating Radar in the Cavity Detecting of Cement Concrete Pavement

It is necessary to regular detect the cement concrete pavement using an appropriate method,for the pavement prone to producing some defects in the early,such as cavity,jack mud and fissures,leading to road damage. Ground penetrating radar technology is an advanced non-destructive detecting method.Using the radar technology to detect the cavity of cement concrete pavement can be viewed as an extension of the thickness of detecting,so the mature experience in pavement thickness detecting can be also used.The radar wave produces a strong reflection on the road cavity,so it is easy to identify in the profiles.According to the radar reflected wave amplitude and the phase＇ s characteristics,combining with core drilling results,the cavity in road can be semi-quantitative discriminated.