02515_PORTLAND_CEMENT_CONCRETE.rtf

02515-1

SECTION 02515

PORTLAND CEMENT CONCRETE PAVEMENTS

1. GENERAL:

1.1 Provide all labor, materials, equipment and services necessary for and reasonably incidental to the installation of concrete pavement, in accordance with these specifications.

2. APPLICABLE PUBLICATIONS: The publications listed below form a part of this specification to the extent referenced.

2.1 The work under this Section shall be in accordance with the applicable portions of the Maryland Department of Transportation State Highway Administration's Standard Specifications for Construction and Materials," dated July 2008, including the latest errata and addenda thereto, referred to herein as the Maryland State Specification, except as may be modified herein.

2.2 All references to "Engineer" or "Administration" shall be interpreted to mean "Contracting Officer" or "Government," respectively.

3. MATERIALS

3.1 Materials for Portland Cement Concrete Pavement shall be in accordance with Section 902 of the Maryland State Specification

4. CONSTRUCTION METHODS

4.1 Construction shall be in accordance with Maryland State Specification Section 520.

4.1.1 Placing During Hot Weather: When the air temperature is forecasted to exceed 90 degrees fahrenheit (F), concrete shall be placed so that the initial set occurs before the temperature reaches 90 degrees F. No concrete shall be placed when the ambient air temperature is 90 degrees F or higher. When the temperature is above 70 degrees F, forms, reinforcing, and subgrade shall be sprinkled with cool water just prior to concrete placement, and the finished surfaces of the newly-laid pavement shall be kept damp by applying a waterfog or mist with approved spraying equipment until pavement is covered by the curing medium.

4.2 FIELD TESTING

4.2.1 One set of three test beams or cylinders shall be made for each 100 cubic yards, or fraction thereof, of concrete placed daily. Test beams and cylinders shall be molded and cured in conformance with ASTM C 31, and tested in accordance with ASTM C 78 and ASTM C 39, respectively.

5. MEASUREMENT AND PAYMENT:

5.1 Measurement and Payment shall be based on the contract unit prices for the items listed.

*END OF SECTION*