Summary of Rubber Modified Asphalt Product Specifications around ...

criteria outlined in Table C will be considered rejectable and shall be removed and replaced with an
acceptable OGFC mix.
Acceptance of RAC-O
RAC-O shall meet the requirements for surface tolerance and visual acceptance as specified elsewhere
in the Contract. Acceptance of the material shall be based on the average for the lot meeting the
requirements given in Table C and for air voids, no less than 2 % below the mix design requirements.
No payment adjustment will apply to the mix that meets the criteria. No payment adjustment will apply
to the mix that meets the criteria. Any sublot that does not meet the criteria outlined in Table C will be
considered rejectable and shall be removed and replaced with an acceptable RAC-O mix. No particles
or clumps of CRM shall be visible to the naked eye.
Acceptance of HL4 OBC
OBC shall meet the requirements for surface tolerance and visual acceptance as specified elsewhere in
the Contract. Acceptance of the material shall be based on the average for the lot meeting the
requirements given in Table C and for air voids, no less than 2 % below the mix design requirements.
No payment adjustment will apply to the mix that meets the criteria. No payment adjustment will apply
to the mix that meets the criteria. Any sublot that does not meet the criteria outlined in Table C will be
considered rejectable and shall be removed and replaced with an acceptable HL4 OBC mix.
Referee Testing
Table C - Specification Limits from Job Mix Formula (JMF)
TEST LL (%) UL (%)
Asphalt Cement Content JMF - 0.5 JMF + 0.50
Designated Large Sieve* JMF - 5.0 JMF + 5.0
4.75 mm Sieve JMF - 5.0 JMF + 5.0
75 µm Sieve JMF - 1.0 JMF + 1.0
* Designated Large Sieve is 4.75 mm for OGFC and RAC-O and is 9.5 mm for OBC.
Testing by an independent third party referee laboratory of only the entire lot may be requested by the
Contractor or the Owner for any completed lot.
Referee testing for a given lot can only be invoked by the Contractor within five business days of the
Contractor receiving the Contract Administrator’s calculated QC and QA payment factors for that lot.
The Owner may invoke referee testing for a given lot not more than 15 business days after all the QA
samples for the lot are received at the QA laboratory, or not more than 6 business days after all the QC
results are received by the Contract Administrator, or not more than 15 days after a lot is terminated due
to a delay of more than 20 business days in placing the complete lot, whichever is the latest date.
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