Reso 2007-1103 - Laserfiche WebLink

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N I I u u u I u: ii! 111 'lll� 11! The sources of reclaimed portland cement concrete will be treated as a mine and subject to the requirement of Section 6. 916 BITUMINOUS MATERIALS. (REV 11 -2 -05) (FA 12 -6 -05) (7 -06) SECTION 916 (Pages 785 -797) is deleted and the following substituted: SECTION 916 BITUMINOUS MATERIALS 916 -1 Superpave PG Asphalt Binder: 916 -1.1 Requirements: Superpave PG asphalt binders, identified as PG 64 -22, PG 67 -22, and PG 76 -22, shall meet the requirements of 916 -1.2, AASHTO M -320 and the following additional requirements: I. The mass loss AASHTO T -240 shall be a maximum of 0.5% for all grades. 2. The spot test AASHTO T -102 with standard naphtha shall be negative for all grades. As an exception, a positive spot will be accepted if the PAV Residue ( AASHTO R -28) at 110 °C meets all the requirements for the particular grade. 3. The smoke point FM 5 -519 shall be a minimum of 1 25 °C for all grades. 4. The intermediate test temperature at 10 rad /s. for the Dynamic Shear Rheometer test AASHTO T -31 5 shall be 25 °C for all grades. 5. An additional high temperature grade of PG 67 is added for which the high test temperature at 10 rad /sec for the Dynamic Shear Rheometer test AASHTO T -31 5 shall be 67 °C. 6. All PG asphalt binders having a high temperature designation of PG 67 or lower shall be prepared without modification. 7. All PG asphalt binders having a high temperature designation higher than PG 67 shall be produced with a styrene- butadiene - styrene (SBS) or styrene- butadiene (SB) elastomer polymer modifier and resultant binder shall meet all requirements of this Specification; in addition the phase angle at 76 °C ( AASHTO T -315) shall be less than or equal to 75 degrees. 8. The maximum viscosity AASHTO T -202 shall be 2400 poises for PG 64- 22 and 3600 poises for PG 67 -22. All hot mix asphalt (except hot mix asphalt containing 20% RAP or greater) shall contain Superpave PG asphalt binder grade PG 67 -22 unless otherwise specified in the plans and /or Specifications for the hot mix asphalt product. For all PG binder used in all hot mix asphalt, silicone shall be added to the PG binder at the rate of 25 cm3 of silicone mixed to each 5,000 gal. of PG binder. If a disbursing fluid is used in conjunction with the silicone the resultant mixture containing the full 25 cm' of silicone shall be added in accordance with the manufacturer's recommendation. The blending of the silicone with the PG binder shall be done by the supplier prior to the shipment. All PG binder to be used in asphalt rubber binder for Friction Course mixes and other hot mix asphalt products containing RAP shall contain 0.5% heat stable anti - strip additive by weight of PG binder unless specifications for the hot mix asphalt product March 2007 01000 -162 03- 4122.D'