Section 23 – Asphalt Concrete
2/19/04
23.13
23-10.04.D Storage/Reaction Tank
The asphalt-rubber storage/reaction tank shall be equipped with a heating system capable
of maintaining a temperature of 300°F to 375°F for reacting, pumping, and for adding the binder
to the aggregate. The storage/reaction tank shall be separate from the primary blender and
secondary blender of the blending unit. The maximum capacity of the storage/reaction unit shall
be eight-hundred (800) gallons. This unit shall have an internal mixing device capable of
maintaining a uniform mixture of asphalt cement and granulated rubber. The internal mixing
device shall be oriented horizontally in the tank.
23-10.04.E Supply System
The asphalt-rubber supply system shall be equipped with a pump and a direct interlock
metering device capable of adding the binder by volume to the aggregate at the percentage
required by the mix design.
23-10.04.F Temperature Gage
An armored thermometer of adequate range in temperature reading shall be fixed in the
asphalt-rubber feed line at a suitable location near the mixing unit.
23-10.05 Placement
ARHM-GG is particularly temperature sensitive and shall be spread at a temperature of not
less than 285
°
F and not more than 325
°
F, measured in the hopper of the paving machine. See
Section 23-8.02, “Pre–Overlay Preparation”, in this Section of these Specifications for additional
placement requirements.
23-11 MEASUREMENT AND PAYMENT
Measurement and payment for asphalt concrete shall be as specified in Section 39-8,
“Measurement and Payment”, of the State Specifications, and these Specifications.
When acceptance testing is required for asphalt concrete placement, full compensation for
placement of the test section shall be considered as included in the price paid per ton for
asphalt concrete and no additional compensation will be paid.
ARHM-GG will be measured by the ton as specified for asphalt concrete in Section 39-8.01,
"Measurement”, of the State Specifications.
The unit price paid per ton for ARHM-GG includes full compensation for furnishing all labor,
materials, tools, equipment, and incidentals, and for doing all work involved in placing ARHM-
GG complete in place, including furnishing and spreading sand cover if directed by the Agency,
as shown on the Plan, as specified in the State Specifications, these Specifications, and the
Special Provisions, and as directed by the Agency, except that Type "A" asphalt concrete
leveling courses shall be paid per ton of Type "A" asphalt concrete, and no additional
compensation will be paid.
Type A asphalt concrete leveling courses will be measured and paid for by the ton as
asphalt concrete.



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