Specifications include, but are not limited to:MATERIALS A. Coal Tar Pitch Emulsion. 1. Coal Tar Pitch Emulsion must be in compliance with the ASTM Specification D3320. 2. The material shall be prepared from the straight run high temperature coke-oven tar meeting the requirement of ASTM D-490. a. Petroleum tar and oil and water gas tars shall not be used even though they comply with ASTM D-490. 3. The material shall be homogeneous and show no separation or coagulations of components that cannot be redispersed with moderate stirring. 4. The material shall be capable of application and complete coverage by squeegee, brush, or by approved mechanical methods to the bituminous surface at a spreading rate of 0.18 to 0.20 gallons (undiluted) per square yard in 2 coats application. B. Crack Filler: 1. Must be certified by the supplier for compatibility with the sealcoating material. Cold pour crack fillers, STAR STA-FLEX and premium grade STA-FLEX SUPREME or equal, are recommended. a. Hot pour rubberized crack fillers may also be used.
