Problem A longitudinal joint located on Taxiway A of the St. Landry Parish Airport in Opelousas, Louisiana, was identified as failing. A deteriorated joint seal allowed water to infiltrate and weaken the support soils, which caused differential settlement at the joint up to 1.5 inches over approximately 38 slabs (475 feet total). The airport project engineers were concerned about potential damage to small aircraft and inconvenience for their clients, so they decided to pursue a fast and effective repair solution. The airport hired Forby Contracting as the prime contractor and subcontracted URETEK to stabilize and lift the faulted longitudinal joint in Taxiway A using the URETEK Deep Injection ® (UDI) process. Analysis The longitudinal joint in question had not been properly sealed

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