26-Sec 32 12 00 - BITUMINOUS CONCRETE PAVING.pdf

BITUMINOUS CONCRETE PAVING

32 12 00-1

SECTION 32 12 00

BITUMINOUS CONCRETE PAVING

PART 1 GENERAL

1.01 SECTION DESCRIPTION

A. The Work of this Section Includes:

1. Asphalt paving of roadways.

1.02 SYSTEM DESCRIPTION

A. Paving: Designed for traffic anticipated on the roadways.

1.03 RELATED SECTIONS

A. Section not used

1.04 QUALITY ASSURANCE

A. Reference Standards:

1. Pennsylvania Department of Transportation:

a. Publication 408 Specifications

b. Publication 27 – Specification for Bituminous Mixtures (Bulletin 27)

B. Perform Work in accordance with the latest edition of PennDOT Publication 408.

C. Mixing Plant: Conform to PennDOT Bulletin 27, chapter 1 Standards.

D. Conform to applicable Borough standards for paving work on public property.

1.05 SUBMITTALS

A. Certificates:

Submit certification from bituminous and aggregate suppliers attesting that materials conform to the State Specifications in accordance with Section 01 33 00.

1.06 ENVIRONMENTAL REQUIREMENTS

A. Do not place asphalt when base surface temperature is less than 40 degrees F or base surface is wet or frozen.

1.07 JOB CONDITIONS

A. Restore existing paving outside the limits of the Work that is damaged by Contractor’s operations, to its original condition at the expense of Contractor.

PART 2 PRODUCTS

2.01 PAVING MATERIALS

A. Bituminous Concrete Base Course: PennDOT Superpave (Section 313 of Publication 408).

B. Binder Course: PennDOT Superpave (Section 410 & 413 of Publication 408).

C. Wearing Course: PennDOT Superpave (Section 410 & 413 of Publication 408).

D. Tack Coat: Per Section 460 of PennDOT Publication 408, except revise the first sentence to read:

Emulsified Asphalt, Class E-8 (AASHTO CSS-1h or SS-1h)

E. Joint Seal: Asphalt PG 64S-22 Sealant (Publication 408).

2.02 SUBBASE COURSE MATERIALS

A. Coarse Aggregate: PennDOT No. 2A (Section 703.2 of Publication 408).

2.03 PAINTING MATERIALS

A. Sections 962, PennDOT Publication 408.

BITUMINOUS CONCRETE PAVING

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PART 3 EXECUTION

3.01 EXAMINATION AND PREPARATION

A. Verify gradients and elevations of area to be paved.

B. Trim existing paving with minimum one (1) foot cutbacks to remove damaged areas. Cut straight joint lines and right angle offsets.

C. Remove any temporary paving material.

D. Proof-roll subgrade (10 ton roller) and replace any soft or unsuitable material with coarse aggregate.

Verify compacted subgrade is dry and ready to support paving and imposed loads.

E. Apply tack coat in accordance with PennDOT Publication 408 requirements prior to placing an overlay over existing paving or prior to placing a wearing coarse over a previous placed binder course.

F. Coat surfaces of any manhole or catch basin frames with oil to prevent bond with asphalt paving.

3.02 SUBBASE COURSE

A. Place PennDOT No. 2A coarse aggregate in continuous layers not exceeding 6 inches loose depth, and compact (10 ton roller) to required contours and elevations.

3.03 PLACING ASPHALT PAVEMENT

A. Place bituminous concrete base course on surface of compacted subbase course to compacted thickness (10 ton roller where possible; minimum 5 ton roller in trenches) as shown on Drawings.

B. Place binder and wearing courses to compacted thicknesses (10 ton roller except minimum 5 ton roller for binder course in trenches) as shown on the Drawings. Apply tack coat on completed binder course before placing wearing course should there be a delay between completion of binder course and placement of wearing course.

C. Place wearing course overlay to compacted thickness (10 ton roller) as and where shown on the Drawings.

D. Compact pavement by rolling to achieve even and smooth finish, without roller marks. Hand compact in areas inaccessible to rolling equipment.

E. Where proposed asphalt paving adjoins existing asphalt paving, seal the joint with hot bituminous material in accordance with PennDOT Publication 408 requirements.

F. Provide painted markings where shown on Drawings.

3.04 TOLERANCES

A. Flatness: Maximum variation of 1/4 inch measured with 10 foot straight edge.

B. Compacted Scheduled Thickness: Within 1/4 inch of design thickness.

C. Variation from True Elevation: Within 1/2 inch.

END OF SECTION

PART 1 GENERAL