229 SECTION 501 PORTLAND CEMENT CONCRETE PAVEMENT
501.1 -DESCRIPTION : This work shall consist of a pavement or an unbonded overlay pavement composed of Portland cement concrete, with or without reinforcement as shown on the Plans, constructed on a prepared subgrade, base course, or existing pavement in accordance with these Specifications and in reasonably close conformity with the lines, grades, thicknes ses, and typical cross sections shown on the Plans or established by the Engineer. Supplementary cementitious materials (fly ash, slag cement, and silica fume) conforming to the provisions of these specifications may be used as an additive to Portland Cement Concrete Pavement at the Contractor ’s option. These additives are not permitted when a blended hydraulic cement is used. For the purposes of cement material substitution with SCMs, Type IL cement shall not be treated as a blended cement, a nd a supplementary cementitious material (SCM) may be used with Type IL cement. A water reducing admixture may be used at the Contractor ’s option. A water reducing admixture shall not be used in conjunction with a water reducing retarder.
501.2 -MATERIALS : Materials shall meet the requirements of Division 700, as follows:
MATERIAL SUBSECTION Air Entraining Admixture 707.1 Coarse Aggregate 703.1 -4 Coated Dowel Bars 709.15 Curing Materials 707.6 -707.10 Fine Aggregate* 702.1 Joint Tie Bolt Assembly 709.7 Low Modulus Silicone Joint Sealant; Back -Up Material 708.4 Pavement Reinforcement 709.4, 709.6 Performed Elastomeric Joint Seals; Lubricant -Adhesive 708.2 Portland Cement 701.1, 701.3 Supplementary Cementitious Materials (SCMs) 707.4 Preformed Expansion Joint Filler 708.1.1 (Type 1), 708.1.2 Tie Bars 709.1 Water 715.7 Water Reducer 707.3 * The use of limestone will not be permitted.
Shipping and Storage of Cement: Cement shall be shipped from pretested and approved bins at the mill or other terminal locations. Cement stored by the Contractor for a period longer than 90 days shall be retested before being used in the work. Cement failing to meet any of the specif ied requirements at any time prior to incorporation into the work will be rejected and removed from the work. Cements of different types shall be stored separately.