42-Sec 32 12 00 - ASPHALT CONCRETE PAVING.pdf

ASPHALT CONCRETE PAVING

32 12 00-1

SECTION 32 12 00

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. All Materials and Construction shall be 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 Township standards for paving work on public property.

1.05 SUBMITTALS

A. Certificates:

Submit certification from asphalt 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. WMA Wearing Course: Per Section 413 of PennDOT Publication 408 - 1.5" depth 9.5mm, PG 64S-22, 3.0 – 10 million ESALs, SLR-H, containing ≤ 15% recycled material and virgin asphalt cement. (Wearing Course with more than 15% light colored aggregate will not be accepted.)

B. WMA Scratch/Leveling Course: Per Section 413.2 of PennDOT Publication 408 - 9.5mm, PG 64S- 22, 3.0 – 10 million ESALs, SLR-H, containing ≤ 15% recycled material and virgin asphalt cement

C. Non-Tracking Tack Coat: Per Section 460.2 of PennDOT Publication 408

D. WMA Binder Course: Per Section 413 of PennDOT Publication 408 – 6.5” depth 19mm PG 64S-22,

3.0 – 10 million ESALs, containing ≤ 15% recycled material and virgin asphalt cement

E. WMA Base Course: Per Section 313 of PennDOT Publication 408 – 5.0” depth 25mm PG 64S-22, 32 12 00-2

3.0 – 10 million ESALs, containing ≤ 15% recycled material and virgin asphalt cement

PART 3 EXECUTION

3.01 CONSTRUCTION

A. Surface preparation, tack coat application, base course construction, scratch/leveling course construction, wearing course construction, and asphalt concrete curb construction shall be per PennDOT Publication 408 Sections 313.3, 413.3, 460.3, and 636.3.

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

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

D. Remove any temporary paving material.

E. 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.

F. Keep the milled pavement surface free of all loose materials and dust.

G. Apply tack coat in accordance with PennDOT Publication 408 (latest edition) Section 460.3 requirements and rates of application prior to placing an overlay over existing paving or prior to placing a wearing course over a previously placed binder course.

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

I. Where proposed asphalt paving adjoins existing asphalt paving, seal the joint with hot asphalt material in accordance with PennDOT Publication 408 (latest edition) requirements.

J. Place leveling course where directed and wearing course in 1-1/2 inch lifts. Apply tack coat on completed leveling course before placing wearing course should there be a delay between completion of leveling course and placement of wearing course.

K. Place wearing course overlay to compacted thickness of 1-1/2 inch and density per Publication 408, Section 413.3.

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

M. Where proposed asphalt paving adjoins existing asphalt paving, seal the joint with hot asphalt material in accordance with PennDOT Publication 408 (latest edition) requirements.

N. Repair or replace, to the satisfaction of the Owner, any existing facilities which are damaged by the paving operation including but not limited to mailboxes, sidewalk, curb, utility valve boxes, manholes, etc.

3.02 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