Repairs to International Control Dam-Niagara Falls

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Title: Repairs to International Control Dam-Niagara Falls

Author(s): N. P. Bada

Publication: Special Publication

Volume: 93

Issue:

Appears on pages(s): 609-636

Keywords: bond (concrete to concrete); compressive strength; concrete construction; concrete dams; epoxy resins; mix proportioning; plasticizers; repairs; scarifying

Date: 9/1/1986

Abstract:
Several of the bridge non air-entrained concrete bearing seats on the International Control Dam have concrete deterioration from the application of de-icing salts. A 410 tonne beam and deck slab assembly was raised by twelve hydraulic lift climbing jacks assembled to a single span Bailey Bridge Structure. The concrete repair consisted of removing the deteriorated concrete, application of an epoxy bonder, wood forming, and placing of good quality concrete. The 410 tonne beam and deck slab was lowered onto new elastomeric bearing pads to its original location. The paper details the construction procedures and methods of repair to concrete in Spans 2 and 4.