混凝土密实度的雷达检测方法

Ground penetrating radar in testing the compactness of concrete

混凝土的密实度是混凝土耐久性及抗渗性的一个重要指标。由于探地雷达检测具有无损、检测速度快、扫描面积大、效率高等优点,故作者尝试用探地雷达对混凝土的密实度进行检测。针对三种不同外观质量的混凝土路面,对其密实度进行了雷达扫描检测,发现雷达图像有明显差别。并利用渗水性检测仪,对这些路面的抗渗性作了现场测试。结果表明,两种方法的结论是一致的,这表明探地雷达对混凝土的密实度检测,是一种可行的方法。

The compactness of concrete is an important tactor tnat affects concrete＇s durability and impermeability. As ground penetrating radar test is a non - destructive test and it can survey a large area in a short time, we try to apply it to test the compactness of concrete. After surveyed three concrete roads with different appearance qualities, we found there also had obvious differences in the radargrams. We also made field tests using a kind permeameter. The results are agreed with the GPR survey＇ s. These conclusions show that GPR test is a feasible way to test the compactness of concrete.