8−115 Size of Bar Min. Hole Dia. (in.) Min. Embedment Length (in.) #4 1¼ 8 #5 1 1/8 1 0 #6 1½ 12
819.04 METHOD OF MEASUREMENT. "Drill and Grout Dowels" will be measured by the number
of dowels actually installed in accordance with the Plans and/or as directed by the Engineer. 819.05 BASIS OF PAYMENT. The accepted quantity of "Drill and Grout Dowels" will be paid for at the contract unit price per each as listed in the Proposal. The price so-stated constitutes full and complete compensation for all labor, materials, equipment, tools, and all incidentals required to finish the work, complete and accepted by the Engineer. The cost for furnishing the dowels shall be included in the appropriate reinforcing steel item as listed in the Proposal.
820.01 DESCRIPTION. This work consists of providing two or more applications of a uniform
coating to those concrete surfaces indicated on the Plans, or as directed by the Engineer, all in accordance with these Specifications. 820.02 MATERIALS. Concrete protective sealers shall conform to the requirements of Subsection M.12.03 of these Specifications.
820.02.1 Film Forming Sealers. Concrete surface protective sealers applied to concrete median
barriers shall be of the film forming sealer type and conform to the requirements of Subsection
M.12.03.1 of these Specifications. Other surfaces may receive film forming sealers in accordance with the contract plans and specifications. 820.02.2 Penetrant Sealers. Penetrant sealers shall be applied at locations in accordance with the contract plans and specifications and shall conform to the requirements of Subsection
M.12.03.2 of these Specifications.
820.03 Construction Methods.
a.Surface Preparation. 8−116 1. Concrete to be coated shall be thoroughly clean and free of any efflorescence, laitance, frost, grease, curing compounds, form release oil, etc. or foreign substances that may impair the bond of the sealer. Surface preparation shall be performed in strict accordance with the manufacturer's written recommendations for the selected product. This cleaning must be completed no more than 24 hours prior to coating the concrete unless otherwise indicated by the manufacturer’s recommendations.
2.Curing time of concrete surfaces to receive the sealer shall be as per the manufacturer’s recommendations, but not less than 21 days after concrete has been placed and finished.
3.All adjacent surfaces not specified to be coated shall be properly masked to protect from potential over-spray or spillage.
4.Areas adjacent to the surface to be coated shall be cleaned by high pressure water washing prior to commencing work.
b.Application.
1.The protective coating sha ll be applied evenly in a continuous operation over all surfaces to be treated in order to obtain a uniform coat. The work shall be scheduled so that the stopping point each day falls at an opening, joint, column or corner.
2.Unless otherwise specified, protective concrete sealers shall be applied to concrete surfaces in alternating coats of light gray and white, with the top coat being white. Further application procedures shall follow the manufacturer’s recommendations.
3.Protective concrete sealer shall be applied within the environmental conditions specified in accordance with the manufacturer’s recommendations. The coating shall not be applied in the rain, at the imminent approach of rain or when it is windy so that it adversely affects the application procedure. The time interval between coats shall be as recommended by the manufacturer.
4.Storage and preparation of the sealer prio r to application shall be per the manufacturer’s recommendations. For multi-component systems, the ratio, ratio tolerance and blending method shall be in accordance with the manufacturer’s recommendations.
5.The protective concrete sealer shall be applied by methods and equipment types as given in the manufacturer’s recommendations and as approved by the Engineer. The methods employed shall provide an aesthetically pleasing, uniform, consistent protective coat, without splatter, holidays or other defects. At the Engineer’s discretion, the Contractor may be required to apply the coating to a sample section of not less than 25 square feet, prior to the start of work to demonstrate that the applicator is capable of performing work to the satisfaction of the Engineer. The surface for the sample shall be representative of the concrete to be coated for the project, as accepted by the Engineer. The sample shall provide a reference for the minimum quality level for the project application. No concrete sealer work shall start on the project until the sample section, if required, has been approved by the Engineer.
6.When spray equipment is used to apply a coating consisting of two or more parts, the 8−117spray equipment shall be capable of automatically shutting down if the mixing ratio cannot be maintained with the tolerance specified.
7.Coverage shall be applied at both the rate and the number of coats as recommended by the manufacturer of the selected product.
8.The applicator shall be experienced and qualified by the manufacturer in the proper application procedure for the concrete sealer. Docu mentation attesting to this shall be provided for the Engineer’s review and approval prior to the start of any work. A manufacturer’s representative may be required to be present during all or part of the work at the discretion of the Engineer, at no additional cost to the State.
9.The operation may commence or proceed only with the approval of the Engineer.
820.04 METHOD OF MEASUREMENT. "Concrete Surface Treatment Protective Sealer" will be
measured by the number of square feet of concrete surface actually coated in accordance with the Plans and/or as directed by the Engineer. 820.05 BASIS OF PAYMENT. The accepted quantity of "Concrete Surface Treatment Protective Sealer" will be paid for at the contract unit price per square foot as listed in the Proposal. The price stated shall constitute full and complete compensation for all labor, materials, equipment, and all incidentals required to complete the work as described in this Specification and elsewhere in the Contract Documents, complete in place and accepted by the Engineer. SECTION 821 SAWING AND SEALING JOINTS IN BITUMINOUS CONCRETE PAVEMENTS
821.01 DESCRIPTION. This work consists of making two saw cuts, one within the other, in the
finished bituminous concrete pavement directly over the transverse joints and edge of deck, and filling the cuts with a hot poured asphalt rubber compound at the locations indicated on the Plans, or as directed by the Engineer, all in accordance with these Specifications. 821.02 MATERIALS. Poured joint seal material shall be an asphalt rubber compound of the hot poured type conforming to AASHTO M301 and approved by the Engineer. 821.03 CONSTRUCTION METHODS. The intent of the work under this provision is to establish a weakened plane joint to control reflectance cracking in the newly installed bituminous concrete pavement at the piers and abutments. The cuts shall be made directly over the transverse joints at the piers and the edge of deck
Source: Rhode Island Standard Specifications (Bluebook), 2024 Edition. Pages 449–451 of 826.