Sprayable mortar used to rehabilitate media basins

Problem: 

The city of Houston Water and Wastewater Utility faced the monumental task of rehabilitating more than 220,000 square feet of hydraulic-abrasion-damaged cast-in-place concrete filter media basins in its filter media and pilot plant rehabilitation for its East Water Purification Plant project. The project required that all of the surface defects in the existing concrete walls, troughs, gullets and discharges be...