Summary of Rubber Modified Asphalt Product Specifications around ...

Appendix I: Arizona Asphalt Rubber Specifications
SECTION 1009 ASPHALT-RUBBER MATERIAL:
1009-1 Description:
The work under this section shall consist of furnishing, proportioning and mixing all the
ingredients necessary to produce an asphalt-rubber material.
1009-2 Materials:
1009-2.01 Asphalt-Rubber:
(A) Asphalt Cement:
Asphalt cement shall be a performance grade (PG) asphalt binder conforming to the
requirements of Section 1005.
(B) Rubber:
Rubber shall meet the following gradation requirements when tested in accordance with
Arizona Test Method 714.
Sieve
Percent Passing
Size
Type A Type B
No. 8 100
No. 10 95 - 100 100
No. 16
0 - 10 65 - 100
No. 90.6 30
20 - 100
No. 090.6 50 0 - 45
No. 200 0 - 5
The rubber shall have a specific gravity of 1.15 ± 0.05 and shall be free of wire or other
contaminating materials, except that Type A rubber shall contain not more than 0.1 percent
fabric and Type B shall contain not more than 0.5 percent fabric. Calcium carbonate, up to
four percent by weight of the granulated rubber, may be added to prevent the particles from
sticking together.
Certificates of Compliance conforming to Subsection 106.05 shall be submitted. In addition,
the certificates shall confirm that the rubber is a crumb rubber, derived from processing
whole scrap tires or shredded tire materials; and the tires from which the crumb rubber is
produced are taken from automobiles, trucks, or other equipment owned and operated in
the United States. The certificates shall also verify that the processing does not produce, as
a waste product, casings or other round tire material that can hold water when stored or
disposed of above ground.
1009-2.02 Asphalt-Rubber Proportions:
101