SECTION 820 — CONCRETE SURFACE TREATMENT PROTECTIVE SEALER 800-119 — CONCRETE SURFACE TREATMENT PROTECTIVE SEALER
820.01 Description.
This work includes providing two or more applications of a uniform coating to those concrete surfaces where indicated in the Contract Documents.
820.02 Materials.
Use concrete protective sealers that conform to Subsection M12.03. Film Forming Sealers. Ensure that the concrete surface protective sealers applied to concrete median barriers are of the film forming sealer type and conform to Subsection M12.03.1. Other surfaces will also require film forming sealers as stipulated in the Contract Documents. Penetrant Sealers. Apply penetrant sealers at the required locations, and ensure that the sealers conform to Subsection M12.03.2.
820.03 Construction Methods.
Ensure that all work conforms to the manufacturer’s written recommendations for the selected product.
a.Surface Preparation. ● Clean concrete to be coated and ensure that the concrete is free of any efflorescence, laitance, frost, grease, curing compounds, form release oil, etc., or foreign substances that may impair the bond of the sealer. Complete the cleaning no more than 24 hours before coating the concrete unless otherwise indicated by the manufacturer ’s recommendations. Clean surfaces that become contaminated before application of the coating to these requirements. ● Ensure that the curing time of concrete surfaces to receive the sealer is the lesser of the manufacturer ’s recommendations or seven days after the concrete has been placed and finished. ● Mask a ll adjacent surfaces not specified to be coated to protect from potential over-spray or spillage, on for example, pedestrians and traffic. ● Clean the areas adjacent to the surface to be coated by high pressure water washing before commencing work. See SECTION 815 for additional information.
b.Application.
Part 800 — Bridge Structures August 2025
800-120 SECTION 820 — CONCRETE SURFACE TREATMENT PROTECTIVE SEALER ● Apply the protective coating evenly in a continuous operation over all surfaces to be treated to obtain a uniform coat. Schedule the work so that the stopping point each day occurs at an opening, joint, column, corner, other natural termination point. ● Apply protective concrete sealers to concrete surfaces in alternating coats of light gray and white, with the topcoat being white. ● Apply protective concrete sealer within the environmental conditions specified by the manufacturer. Do not apply the coating in the rain, at the imminent approach of rain, or when it is windy such that it adversely affects the application procedure. ● Apply the protective concrete sealer using methods and equipment types per the manufacturer’s recommendations or as approved by the Engineer in writing. Use methods that provide an aesthetically pleasing, uniform, consistent protective coat, without splatter, holidays, or other defects. ● The Contractor may be required to apply the coating to a sample section of not less than 25 sq ft before the start of work to demonstrate that the applicator can perform the work to the satisfaction of the Engineer. Ensure that the surface for the sample is representative of the concrete to be coated for the P roject and provides a reference for the minimum quality level for P roject application. Do not perform any concrete sealer work until the sample section, if required, has been approved by the Engineer. ● When spray equipment is used to apply a coating consisting of two or more parts, ensure that the spray equipment can automatically shut down if the mixing ratio cannot be maintained within the tolerance specified. ● The operation may commence or proceed only with the approval of the Engineer in writing.
820.04 Method of Measurement.
Concrete Surface Treatment Protective Sealer will be measured by the quantity of square feet of concrete surface coated.
820.05 Basis of Payment.
The Department will pay for the completed and accepted quantities as follows. Pay Item Pay Unit Concrete Surface Treatment Protective Sealer SF The price constitutes full compensation for all labor, materials, equipment, and incidentals required to complete the work, complete and accepted by the Engineer.
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Source: Standard Specifications for Road and Bridge Construction (Blue Book), 2022 (Aug 2025 compilation) Edition. Pages 488–489 of 951. View official source ↗