Investigation of Ground Penetrating Radar for Detection of Leaking Pipelines Under Roadway Pavements and Development of Fiber-Wrapping Repair Technique Final rept

摘要

The objectives of this study are to detect leakages in pipe joints using Ground Penetrating Radar (GPR) and develop and on-site fiber wrapping technique for repairing and strengthening of underground sewage pipes. In determining the feasibility of the GPR technique in detecting leakages in concrete pipe joints, an extensive leak detection survey is performed using GPR in a sewer pipeline overlaid by flexible pavement that already shows signs of subsidence. Moreover, in developing a repair technique, large-scale concrete pipe joints are wrapped using fiber reinforced polymers (FRP) and subjected to test loads to determine the effectiveness of the developed technique.