Specifications include, but are not limited to: It is the goal of the Alameda County Public Works Agency to enlist a qualified vendor to supply, transport and spread liquid asphalt (PMRE AND/OR CRS2H or equivalent) for the Alameda County (County) Public Works Road Department (Public Works) Chipseal Program.
PMRE and/or CRS2H or equivalent shall be cationic type, polymer grade and conform to the following special provisions:
The polymer shall be added to either the asphalt or the emulsion at the location of the manufacturer. The binder shall conform to the aggregate with ten percent (10%) maximum film stripping as tested by Caltrans Specifications, Section 302.
The polymer shall be either neoprene or a blend of butadiene and styrene.
The temperature of the polymer modified asphalt emulsion at the time of application shall be between one hundred thirty (130) degrees and one hundred eighty (180) degrees Fahrenheit.