Dallas/Fort Worth Airport Train Critical Needs

This paper summarizes the investigation phase of the work and presents an overview of the recommendations. One of the implemented repairs, made to degraded parapet wall running surfaces, is discussed in detail. Numerous repairs had been attempted in the past to address this persistent maintenance problem with little success. After reviewing previous repairs and evaluating several possible alternatives, a "Pilot Program" was recommended and implemented. An epoxy-sand grout was developed in cooperation with contractors executing the work. This repair was applied in selected sections of guideway and its performance was evaluated over a two-year period. That evaluation is now complete and the repair has been recommended to be implemented throughout the Airport Train system.