Application of Simplified Deterioration Diagnosis Method to Existing Fishing Port Facilities

For the efficient maintenance of a large number of fishing port facilities distributed over various locations, establishment of simple deterioration diagnosis method with acceptable precision is needed. In this study, the applicability of the rebound method and the mechanical impedance method to the existing fishing port facilities was examined with laboratory tests focusing on the effect of testing conditions, measurement positions, aggregate contents on compressive strength, and influence of polishing of the test surfaces followed by in-situ surveys. As a result, the mechanical impedance method showed an acceptable precision as compared with the rebound method and was able to easily estimate compressive strength without polishing the test surfaces. It was very likely that the mechanical impedance method could be highly applicable to deterioration diagnosis method for the existing fishing port facilities.