501— Portland Cement Concrete Pavement

500-1 Division 500

CONCRETE PAVEMENT 501.1 Description 1 Construct a Portland cement concrete pavement on a prepared subbase or base course. 501.2 Materials 501.2.1 Portland Cement Concrete Pavement 1 Provide Portland cement concrete materials that conform to SC -M-501 and Subsection 701.2. 501.2.1.1 Joint Fillers 1 Use filler for preformed or sawed joints of the type specified and placed according to joint details shown in the Plans. 501.2.1.1.1 Preformed Expansion Joint Fillers 1 Use preformed joint filler that conforms to Subsection 723.2.1 and is listed on Qualified Products List 81. Provide preformed joint fillers with a thickness equal to the width of the joint required and furnish in lengths equal to the width of the slabs in which they are installed. Use preformed joint filler shaped so that, after installation, the upper and lower surfaces conform to the shape of the slab and subbase surfaces. Position the lower surface of the preformed joint filler on or below the surface of the base while the upper surface is ½ in. below the surface of the slab. 501.2.1.1.2 Silicone Sealant 1 Use silicone sealant of low modulus and furnished in a one- part silicone formulation. Ensure that the sealant is compatible with the surface to which it is applied. Use silicone sealants that do not require heat or primers to attain a bond to the joint walls. Do not use acid cure silicone sealants on Portland Cement C oncrete. Use silicone sealants listed on Qualified Products List 8 and meeting the requirements of ASTM D5893. Fill all sawed joints (transverse and longitudinal) with a silicone sealant unless otherwise specified. 2 Provide the RCE with the manufacturer's installation instructions for each brand and type of sealant intended for use before incorporation into the work. With