The Woodlands Waterway Marriott Hotel Parking Garage
A vehicle fire involving 3 vehicles caused surface damage to the concrete parking structure. The heat caused spalling and repairs were required on three double-tees and three wall panels. A detailed inspection revealed localized concrete spalls, cracks, and delaminations in the double-tees, haunches, and wall panels. The most severe distress occurred in the double-tee stems and flange soffits.
Double Tee Stem Strengthening
Fiber-reinforced polymer (FRP) was used to strengthen the double-tee stems because it provided sufficient strength to the structure, and it also met the aesthetic requirements for the project.
A quality assurance program was implemented to verify that the repairs performed were in general compliance with the intent of the design drawings. The quality assurance procedures included pre-construction inspections of surfaces to be repaired, periodic observations, bond testing of concrete surfaces, and inspection and sounding of completed repairs. Tensile pull-off tests were performed following ICRI Technical Guidelines.
“The result was a repair solution that is expected to be structurally functional and aesthetically pleasing
for users of the facility.”
–Alfredo E. Bustamante