2010 Construction and Material Specifications - Ohio Department of ...

301.06
Item 301 Asphalt Concrete Base as a subbase for a rigid pavement or base, do not
exceed a variation of 1/4 inch (6 mm).
Correct variations in excess of slope or surface tolerances by adding or
removing material in a manner satisfactory to the Engineer. The Contractor may
use asphalt concrete approved by the Engineer.
301.06 Basis of Payment. The Department will pay for accepted quantities,
complete in place, at the contract price as follows:
Item Unit Description
301 Cubic Yard Asphalt Concrete Base
(Cubic Meter)
ITEM 302 ASPHALT CONCRETE BASE
302.01 Description
302.02 Composition
302.03 Mixing
302.04 Spreading and Finishing
302.05 Spreading and Surface Tolerances
302.06 Basis of Payment
302.01 Description. This work consists of constructing a base course of
aggregate and asphalt binder, mixed in a central plant and spread and compacted
on a prepared surface.
The requirements of Item 401 apply, except as modified by this specification.
302.02 Composition.
A. General. Furnish a mixture that conforms to the following gradation:
Sieve Size Total Percent Passing
2 inch (50 mm) 100
1 1/2 inch (37.5 mm) 85 to 100
1 inch (25.0 mm)[1] 68 to 88
3/4 inch (19.0 mm)[1] 56 to 80
1/2 inch (12.5 mm)[1] 44 to 68
3/8 inch (9.5 mm)[1] 37 to 60
No. 4 (4.75 mm) 22 to 45
No. 8 (2.36 mm) 14 to 35
No. 16 (1.18 mm) 8 to 25
No. 30 (600 µm) 6 to 18
No. 50 (300 µm) 4 to 13
No. 200 (75 µm) 2 to 6
[1] Provide aggregate to retain a minimum of 7 percent of the material on
each of these sieves. This requirement applies to the gradation of the JMF
and the mix production according to Item 403.
In the design of the asphalt concrete base, the requirements of Item 441 apply,
except as follows:
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