Summary of Rubber Modified Asphalt Product Specifications around ...

Material aggregate furnished for mix designs shall be representative of the source(s) and
sampled from the materials stockpiles to be utilized in asphaltic concrete production. Mix
designs shall be performed utilizing mineral aggregate which conforms to the grading limits
in Table 414-1.
TABLE 414-1
MIX DESIGN GRADING LIMITS FOR MINERAL AGGREGATE
(Without Admixture)
Sieve Size Percent Passing
3/4 Inch 100
No. 4 30 - 45
No. 8 4 - 8
No. 200 0 - 2.5
Mineral aggregate shall conform to the requirements in Table 414-2 when tested in
accordance with the applicable test methods.
Tests on aggregates outlined in Table 414-2, other than abrasion, shall be performed on
materials furnished for mix design purposes and composited to the mix design gradation.
Abrasion shall be performed separately on samples from each source of mineral aggregate.
All sources shall meet the requirements for abrasion.
TABLE 414-2
MINERAL AGGREGATE CHARACTERISTICS
Characteristic Test Method Requirement
Combined Bulk
Arizona Test
2.35 - 2.85
Specific Gravity
Method 814
Combined Water
Arizona Test
Absorption
Method 814
0 – 2.5%
Sand Equivalent Arizona Test
Method 242
Minimum 55
Fractured Coarse
Arizona Test Minimum 85% (two
Aggregate Particles
Method 212
fractured faces)
Flakiness Index Arizona Test
Method 233
Maximum 25
Carbonates in
Arizona Test
Maximum 30%
Aggregate
Method 238
Abrasion AASHTO T 96 100 Rev., Max. 9%
500 Rev., Max. 40%
414-3.03 Mineral Admixture:
Mineral admixture will be required. The amount shall be 1.0 percent, by weight of the
mineral aggregate and shall be either portland cement type II or hydrated lime, conforming
to the requirements of Table 414-3.
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