(Concrete Pavement)
Article 1 — Description
Clean and seal joints and cracks in concrete pavement .
Article 2 — Materials
Furnish sealant, boards, and backer rods in accordance with DMS -6310 , “Joint Sealants and Fillers.” The sealant must be Type 4, 5, 7, or 8 unless otherwise shown on the plans or in conformance with specifications. Furnish primer when required by the sealant manuf acturer.
Article 3 — Equipment
Use equipment in conformance with the sealant manufacturer’s recommendations. Furnish equipment capable of placing the sealant, backer rods, and boards as shown on the plans. Furnish equipment capable of removing all foreign material from the concrete joint or the grooved crack. The following equipment is recommended to meet cleaning and sealing requirements: power concrete saw , sandblasting equipment , power rout er, high- pressure air, and sealant d ispenser .
Article 4 — Work Methods
Use dimensions for joint details in accordance with S tandard Drawing Concrete Paving Details, Joint Seals, unless other dimensions are shown on the plans. Make a groove, follow the cracks to be sealed, and rout the groove approximately 1/2 in. deep × 5/8 in. wide, unless otherwise directed or shown on the plans. The Engineer will select joints and cracks to be cleaned and sealed. Remove all foreign material from the joint or groove reservoir. Clean the joint by sandblasting or other approved methods. If directed, saw joint sides to remove embedded foreign material in the concrete that sandblasting will not remove. Do not place sealant when the concrete pavement is below 55°F or above 90°F. Do not place sealant in a wet or damp joint or groove. Use approved drying method if joints or grooves are sealed within 24 hr. of rain. Apply primer when required by the sealant manufacturer. Blow out joint or groove by high pressure air or other approved methods before placing sealant. Remove and replace sealant when placed flush with or above the pavement surface. The various types of joints and cracks are shown in Table 1. 970 Table 1 Types of Joints and Cracks Requirements Joint or Crack Type Requirement Transverse contraction joints Backer rods and sealants Longitudinal contraction joint Sealant Longitudinal construction joint Sealant Expansion joints Boards, backer rods, and sealant Cracks in concrete pavement Sealant
Article 5 — Measurement
Joint cleaning and sealing will be measured by the foot of joint cleaned and sealed. Crack cleaning and sealing will be measured by the foot of crack cleaned and sealed.
Article 6 — Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” will be paid for at the unit price bid for “Joint Sealing and Cleaning” of the type specified, or “Crack Cleaning and Sealing.”