Summary of Rubber Modified Asphalt Product Specifications around ...

i. Acceptance and pay adjustment of the RMA containing RAC-terminal blend shall be determined
accordance to the respective mix type HMA requirements specified elsewhere in the Contract
Documents.
ii. Acceptance and pay adjustment of the Superpave 12.5FC 1 R-Gap Graded shall be according to
requirements for Superpave 12.5FC 1 specified elsewhere in the Contract Documents with the exception
of air voids and compaction. VMA will not be considered an acceptance criterion for Superpave 12.5FC
1 R-Gap Graded. Aggregate physical properties for Superpave 12.5FC 1 R-Gap Graded shall be
according to requirements for Superpave 12.5FC 1 specified elsewhere in the Contract Documents.
iii. RMA containing RAC wet-terminal blend will be rejectable if there are clumps of CR in the RMA
visible to the naked eye.
c) Acceptance of Rubberized Asphalt Cement (RAC)
i. Acceptance of the RAC wet-terminal blend shall be determined according to the respective requirements
for the PGAC grade specified according to OPSS 1101. Additionally, to be acceptable the RAC wetterminal
blend shall meet the Type III Asphalt Rubber Binder requirements of ASTM D6114.
ii. Acceptance of the RAC wet-field blend shall be according to Table R4.
313.08.01.02.04.01 General
Clause 313.08.01.02.04.01 of OPSS 313 is amended by the addition of the following:
The Owner will use LS-292 for determination of the asphalt cement content for the RMA, therefore, the referee
laboratory shall also follow LS-292 (ignition oven).
313.09 MEASUREMENT FOR PAYMENT
313.09.01.01
Clause 313.09.01.01 of OPSS 313 is amended by the addition of the following item:
Superpave 12.5FC 1 R-Gap Graded
313.10 BASIS OF PAYMENT
313.10.01.01
Clause 313.10.01.01 of OPSS 313 is amended by the addition of the following item:
Superpave 12.5FC 1 R-Gap Graded - Item
313.10.01.02.02.04 Payment Factor for Voids
Clause 313.10.01.02.02.04 of OPSS 313 is deleted in its entirety and replaced with the following:
For Superpave 12.5FC 1 R-Gap Graded, as long as the lot mean air voids is between 2.5 and 5.5 percent, the
payment factor for voids, PFVOIDS, shall be equal to either:
a) PFGAC, if the PFGAC is less than 1.0; or,
b) 1.0, if the PFGAC is equal to or greater than 1.0.
Otherwise, if the lot mean air voids is outside the 2.5-5.5 percent range, the PFVOIDS shall be considered to be 0.5.
30