| 摘要 |
<P>PROBLEM TO BE SOLVED: To more simply and accurately perform non-destructive and prompt investigation on an internal damaged part of pavement. <P>SOLUTION: Over a whole predetermined unit determination area on a pavement road surface R, a survey is performed at predetermined intervals by an electromagnetic radar, reflection wave data at each reflection wave detection position are acquired and on the basis of the acquired reflection wave data, a reflection wave strength at each reflection wave detection position in analysis target depth is acquired. On the basis of a degree of dispersion of the reflection wave strengths in the analysis target depth, in the case where the degree of dispersion is equal to or more than a predetermined value, it is determined that there is internal damage in the analysis target depth within the unit determination area and in the case where the degree of dispersion is less than the predetermined value, it is determined that there is no internal damage in the analysis target depth within the unit determination area. <P>COPYRIGHT: (C)2012,JPO&INPIT |
