627SECTION 428—CONCRETE SURFACE PENETRANT SEALER
428.01 Description
This work shall consist of furnishing and applying a water repellant concrete surface penetrant in accor - dance with this section and in conformity with the details and locations indicated on the plans. The color of the penetrant sealer shall be clear.
428.02 Materials
Penetrant sealer shall be from the VDOT Materials Division’ s Approved Products List 30.
428.03 Procedures
The Contractor shall apply penetrant sealer in accordance with the manufacturer’ s instructions, except as otherwise specified herein. The penetrant sealer shall not be applied until all adjacent or superim - posed concrete placements have been completed. The Contractor shall abrasive blast clean all surfaces to receive the penetrant sealer to provide a clean uniform texture, free of foreign substances such as oils, release agents, curing agents, or efflorescence. All abrasive blasting residue shall be completely removed and disposed of away from the area of application prior to application of the penetrant sealer. The Contractor shall thoroughly mix each container of penetrant sealer material according to the manu - facturer’ s recommendations. The penetrant sealer material shall be applied by experienced persons using spray, brush or roller and shall not be thinned or reduced, except as may be specifically required by the manufacturer. Application rates and number of coats shall be in accordance with the manufacturer’ s recommendations. All construction debris and abrasive blast residue shall be properly disposed of offsite in accordance with Section 106.04 once this work is completed.
428.04 Measurement and Payment
Concrete surface penetrant sealer will be measured in square yards and will be paid for at the contract unit price per square yard. This price shall include preparing surface, and furnishing and applying the sealer. Payment will be made under: ———————————————————————————Pay Item Pay Unit———————————————————————————Concrete Surface Penetrant Sealer Square Y ard———————————————————————————428.04 628SECTION 429—BRIDGE DECK W ATERPROOFING MEMBRANE SYSTEMS
429.01 Description
This work shall consist of furnishing and applying waterproofing membrane systems for use on concrete bridge decks that will receive an asphaltic concrete overlay. The work shall include the following items: • Removing existing asphalt concrete overlay • Preparing the bridge deck • Applying primer just prior to placing the membrane • Applying Membrane • Installing Membrane Reinforcement (Type II only) • Installing Protection Board (Type II only) • Applying Tack coat • Placing new asphalt concrete wearing surface
429.02 Types of Waterproofing Membranes
Waterproofing membranes shall consist one of the systems below in accordance with ASTM Standard D6153. The type of system to be used shall be as specified on the Plans or elsewhere in the Contract. Submittals for all systems shall specify their individual components, the individual temperatures and rates of applications for the components, solvents, primers, cure times, etc. for review by the Engineer.
a.Type I – Cold Applied Elastomeric is a cold applied elastomeric membrane system.
b.Type II – Hot Applied Elastomeric is a hot applied elastomeric membrane system.
c.Type III – Preformed Sheet Membrane is a preformed membrane system.
429.03 Materials
Materials specified by the manufacturer of the waterproofing membrane shall prevent the passage of water from the asphalt concrete surface course to or through the bridge deck.
a.Primer shall conform to ASTM D41, Standard Specification for Asphalt Primer used in Roofing, Damp-proofing, and Water-proofing. Primer shall be suitable for use in above or below ground applications.
b.Membrane for Type I systems shall conform to Section 213, and shall consist of cold liquid applied chemically curing membrane materials.
c.Membrane for Type II systems shall conform to Section 213, and shall consist of hot applied elastomeric membrane materials. Material for Type II membrane shall be supplied to the job site in cakes in the manufacturer’ s sealed and labeled containers ready for melting and application.429.01
Source: Virginia Road and Bridge Specifications, 2020 Edition. Pages 655–655 of 1,065.