Epoxy Injection Of A Gate Pier


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Title: Epoxy Injection Of A Gate Pier

Author(s): James E. McDonald, Donald Logsdon

Publication: Concrete International

Volume: 8

Issue: 8

Appears on pages(s): 34-38


Date: 8/1/1986

Cracking in the top of a pier system supporting the service bridge at Dam No. 20 on the Mississippi River allowed precipitation ponding to infiltrate the mass concrete. Subsequent cycles of freezing and thawing resulted in prgressive deterioration of the non-air-entrained concrete. As an alternative to conventional repair methods involving removal of unsound concrete and replacement with air-entrained concrete, a prototype test was conducted to evaluate the potentail of expoxy injection for in-situ repair of the deteriorated concrete. Materials and techniques for in-situ repair in hydraulic structures are currently being evaluated by the U. S. Army Corps of Engineers.