ANTI-STRIP AGENTS FOR CUTBACK ASPHALT
Anti-strip agents used in cutback asphalt shall be approved brands. Sources, approved brand names, and approved dosages are listed in Approved manufacturers and brands of asphalt anti-strip agents are listed in the Materials Approved Products Listing Enterprise (MAPLE).
Brand approval will be based on information supplied by the producer and the results of anti-stripping tests. Requests for approval shall be made to the Office of Construction and Materials in Ames, Iowa, and shall be accompanied by a sample of the anti-strip agent together with product information including brand name, recommended dosage, and instructions for use. Anti-strip testing shall be in accordance with Laboratory Test Method No. Iowa 629. The treatment shall be heat stable for 24 hours at 250°F.
The Office of Construction and Materials may sample and test anti-strip agents to verify results of the original approval.
The manufacturer shall file a certification with the Office of Construction and Materials at the beginning of each calendar year stating that the material supplied during that year is identical with the formulation previously tested and approved.