Title:
Structural Repair of Concrete Cracks
Author(s):
Tom Murphy
Publication:
Concrete International
Volume:
37
Issue:
4
Appears on pages(s):
52-54
Keywords:
capping, delivery, ports, resin
DOI:
10.14359/51687782
Date:
4/1/2015
Abstract:
Epoxy crack injection can be used for structural repair of cracks resulting from single occurrence events such as accidental overloads, vehicular impact, earthquake, restrained shrinkage, or excessive thermal differential in mass concrete. Typical applications include foundations, columns, beams, bridge decks, and bridge superstructures. The article describes elements that contribute to the successful and efficient application of epoxy crack injection—capping paste, injection ports, the injection resin, and the delivery system.
Related References:
1. “Crack Repair Method: Epoxy Injection,” REMR Technical Note CS-MR-3.9, REMR Notebook, U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS, 1985.
2. ACI Committee 224, “Causes, Evaluation, and Repair of Cracks in Concrete Structures (ACI 224.1R-07),” American Concrete Institute, Farmington Hills, MI, 2007, 22 pp.
3. ACI Committee E706, “Structural Crack Repair by Epoxy Injection (ACI RAP Bulletin 1),” American Concrete Institute, Farmington Hills, MI, 2003 (Reapproved 2009), 7 pp.
4. Trout, J., “Tips for Epoxy Resin Injection,” Concrete International, V. 27, No. 11, Nov. 2005, pp. 44-48.