Summary of Rubber Modified Asphalt Product Specifications around ...

Table 902.07.03-1 JMF Master Ranges and Mixture Requirements AR-
OGFC
Mixture Designations (%
Passing 1 )
Sieve Sizes AR-OGFC
1/2" 100
3/8" 90 – 100
No. 4 20 – 40
No. 8 5 – 10
No. 200 0 – 3.0
Minimum asphalt-rubber binder, % 1 8.4
Minimum % Air Voids, design 15
1. Aggregate percent passing to be determined based on dry aggregate
weight.
content to be determined based on total weight of
mix.
Asphalt-rubber
binder
Determine and verify the JMF according to NJDOT B-8. Ensure that the JMF is within the
master range specified in Table 902.07.03-1.
Prepare compacted test specimens for submittal to the ME at least 30 days before the initial
production date. Prepare these specimens from material mixed according to the final JMF,
using 50 gyrations of the Superpave gyratory compactor according to AASHTO T 312.
The ME will test 2 specimens to verify stone-on-stone contact according to NJDOT B-8 and
that the final JMF produces a mixture that has a minimum void content as specified in Table
902.07.03-1. The ME will determine percent air voids according to AASHTO T 209 and
AASHTO T 331.
The ME will test 2 test specimens for abrasion and impact resistance using a modified L.A.
Abrasion Test according to NJDOT B-8. The maximum allowable loss as calculated by this
method is 30 percent.
Do not modify, which includes changing the asphalt cement supplier, the JMF unless the ME
approves the modification.
902.07.04 Sampling and Testing
A. General Acceptance Requirements. The RE or ME may reject and require disposal of
any batch or shipment that is rendered unfit for its intended use due to contamination,
segregation, improper temperature, lumps of cold material, or incomplete coating of the
aggregate. For other than improper temperature, visual inspection of the material by the
RE or ME is considered sufficient grounds for such rejection.
For asphalt-rubber binder, ensure that the temperature of the mixture at discharge from
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