Materials and Procedures for the Repair of Spalls in Concrete.
ARMY CONSTRUCTION ENGINEERING RESEARCH LAB CHAMPAIGN ILL
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Old and new materials used for repairing damaged or deteriorated concrete are studied and evaluated. Results of surveys are analyzed and an evaluation matrix is developed to show performance ratings for repair materials used on certain types of concrete elements. Results indicate that large damaged areas can be successfully and economically repaired using a good quality, low slump, portland cement concrete bonded to the old concrete with an epoxy resin grout. Small spalls and specialized areas can be best repaired with an epoxy resin mortar. Surface preparation must be completed and manufacturers directions for mixing and curing followed. Expansive cements and new modified latex materials show promise, but field data is insufficient to draw conclusions. Author-PL
- Construction Equipment, Materials and Supplies