| 摘要 |
A non-destructive concrete pavement inspection method is provided to directly object P wave from a point to be inspected and improve reliability of P wave velocity without collecting concrete pavement core. A non-destructive concrete pavement inspection method includes a step of setting an oscillator, two sensors and a dynamic signal analyzer, a step of generating stress waves from the oscillator, a step of measuring vertical vibrations according to the frequency band of a stress wave to be measured, a step of transforming the measured vibrations into a frequency domain and acquiring a surface wave velocity of concrete pavement from phase information between the two sensors to determine a P wave velocity, and a step of obtaining the resonant frequency of stress reflected from the surface, internal defect or outer boundary of concrete pavement, and a step of estimating the thickness and defects of the concrete pavement. |
