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Section 23 – Asphalt Concrete

subsequent layers of asphalt concrete, including any paving placed upon existing roadway

surfaces, are subject to the requirements detailed in Section 23-9.02, “Pay Factors”, in these

ASPHALT CONCRETE PLACEMENT ACCEPTANCE TESTING

Except as detailed above for minor streets, materials testing necessary to determine

conformance with the requirements of this Section, excluding bituminous distributor testing, will

be performed by the Agency and the cost thereof will be borne by the Agency.

23-9.01 Pavement Density Testing

Pavement density will be determined by comparing the average density of cores taken from

the compacted pavement to the Maximum Theoretical Density as determined by ASTM D 2041.

The pavement will be accepted for density on a lot basis. A lot will consist of five hundred

(500) tons or portions thereof.

23-9.01.B Laboratory Density

Bituminous mixture for laboratory-compacted specimens will be sampled on a lot basis per

Section 39-3.04 of the State Specifications. The lot size will be the same as indicated in

Section 23-9.01.A in this Section of these Specifications. One sample shall be taken from each

lot on a random basis. One laboratory-compacted specimen shall be prepared from each lot.

23-9.01.C Core Density

Cores for determining the density of the compacted pavement shall be taken on a lot basis,

a minimum of three (3) cores per lot, on a random basis, and in the presence of the Inspector.

The lot size shall be as indicated in Section 23-9.01.A in this Section of these Specifications.

The cores shall be taken in accordance with the Special Provisions and as directed by the

Agency. The density of each core shall be determined per ASTM D 2726-89.

Core samples for determination of the density of completed pavements shall be obtained by

the Contractor at the Contractor’s expense, and no additional compensation will be paid. The

core samples shall be four inches (4") in diameter. The Contractor may utilize a nuclear density

gauge for preliminary testing. Dry ice may be used for cooling the pavement prior to coring.

The number and locations of the samples will be as agreed upon in the field by the Agency and

the Contractor. Samples shall be neatly cut with a saw, core drill, or other approved equipment.

The Contractor shall provide the core samples to the Agency within two (2) hours after final

compaction. Special arrangements must be made with the Agency Material Testing Laboratory

if the Contractor wishes test results within less than twelve (12) hours for night paving or normal

work performed late in the day.

The Agency will meet in the field with the Contractor and mutually agree on several

locations for compaction testing for the given lot and provide a reference marker to the sidewalk

or side of the road. The actual test location will be randomly selected from the several agreed-

For all asphalt concrete pavement subject to acceptance testing, the finished asphalt

concrete pavements that do not conform to the specified relative compaction requirements will

be paid for using the following pay factors:

97.1 % or higher (Over-asphalted mix)