SECTION 836 — STRUCTURAL CONCRETE CRACK REPAIR BY EPOXY RESIN BASE ADHESIVE INJECTION 800-187 — STRUCTURAL CONCRETE CRACK REPAIR BY EPOXY RESIN BASE ADHESIVE INJECTION
836.01 Description.
This work includes repairing cracks in concrete by furnishing and injecting epoxy -resin base adhesives into the cracks. The work also includes surface preparation, setting injection ports, and cleaning surfaces following repairs.
836.02 Materials.
Ensure that all products indicated below are on the Department’s Approved Materials List. Injection Material. Use injection material that is a low viscosity, two-part epoxy-resin system conforming to ASTM C- 881, Type IV and are the required grade and class to satisfactorily perform its function.
a.Quality Control. Provide testing and certification of each lot of the adhesive.
b.Surface Seal. Use a surface seal material as recommended by the adhesive manufacturer to confine the injection adhesive in the crack during injection and curing. Ensure that the material has adequate strength to hold injection fittings or ports and prevent vent leakage during injection.
836.03 Construction Methods.
Surface Preparation. Remove all deteriorated concrete adjacent to the cracks and areas of application before proceeding with crack repairs. Clean surfaces adjacent to cracks or other areas of application of dirt, dust, grease, oil, efflorescence, or other foreign material matter detrimental to the bond of the epoxy injection- surface seal system. Do not use acids or other corrosives. Ensure that cleaning methods do not introduce foreign materials into the crack repair area such that the penetration of the epoxy adhesive is hindered. Provide entry ports along the crack at intervals recommended by the manufacturer. Component Ratio Calibration Test. Disconnect the mixing head of the injection equipment, and pump the two adhesive components simultaneously through two independent valved nozzles. Simultaneously discharge both adhesive components during the same time period so that they can be compared to determine the volume. The Engineer, at any time and without prior notification, may request the Contractor to conduct the calibration test specified above.
Part 800 — Bridge Structures August 2025
800-188 SECTION 836 — STRUCTURAL CONCRETE CRACK REPAIR BY EPOXY RESIN BASE ADHESIVE INJECTION Epoxy Injection. Perform epoxy injection according to the manufacturer’s recommended methods. Finishing. When cracks are completely filled, cure the epoxy for sufficient time according to the manufacturer’s recommendations. Remove surface seal material and injection adhesive runs or spills from concrete surfaces as recommended by the manufacturer. Finish t he face of the crack flush to the adjacent surface , and ensure that the finish has no indentations or protrusions caused by the placement of entry ports.
836.04 Method of Measurement.
Structural Concrete Crack Repair by Epoxy-Resin Base Adhesive Injection will be measured by the number of linear feet, port to port, repaired.
836.05 Basis of Payment.
The Department will pay for the completed and accepted quantities as follows. Pay Item Pay Unit Structural Concrete Crack Repair by Epoxy-Resin Base Adhesive Injection LF The price constitutes full compensation for all labor, tools, materials, equipment, including scaffolds, and all incidentals required to finish the work, complete and accepted.
Part 800 — Bridge Structures August 2025
SECTION 837 800-189 This Section has been Reserved for Future Use.
Part 800 — Bridge Structures August 2025
800-190 SECTION 838 This Section has been Reserved for Future Use.
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Source: Standard Specifications for Road and Bridge Construction (Blue Book), 2022 (Aug 2025 compilation) Edition. Pages 556–559 of 951. View official source ↗