3719Hot-poured, Crumb-rubber Type Crack Sealer

3719.1SCOPE

Provide hot-poured, crumb-rubber type crack sealer for sealing cracks in concrete and bituminous pavements and miscellaneous Structures.

3719.2REQUIREMENTS

Provide crack sealer Material meeting the following requirements:

a homogeneous mixture

holes or discontinuities A Physical Requirements Provide crack sealer meeting the requirements of ASTM D6690, Standard Specification for Joint and Crack Sealants, Hot Applied, for Concrete and Asphalt Pavements, Type I with the following modifications in Table 3719.2-1 after one cycle of heating to the manufacturer’s maximum heating temperature, cooling, and reheating to the manufacturer’s maximum heating temperature. Table 3719.2-1 ASTM D6690, Type I Modifications Test Specification Recycled rubber, mass ≥ 18 percent of asphaltic components Bond Test, 50 percent extension at 0°F* No adhesion or cohesion bond failure after 5 cycles Resilience at 77°F ≥ 40 percent Softening point ≥ 180°F * Use sawed cement mortar blocks or asphalt HMA blocks prepared u sing the method found in the Laboratory Manual. B Packaging and Marking Package and ship the sealer Material in boxes weighing no greater than 50 pounds. Mark the boxes with the following information:

3719.3SAMPLING AND TESTING

A Sampling Provide samples at rates and sizes meeting the requirements of the Schedule of Materials Control or as required by the Contract. The Materials Engineer will perform tests on samples taken from the product proposed for use. Submit to the Engineer a manufacturer’s Certificate of Compliance for each sealer batch. B Methods of Test Perform tests meeting the requirements of ASTM D5329, Standard Test Methods for Sealants and Fillers, Hot-Applied, for Joints and Cracks in Asphalt Pavements and Port land Cement Concrete Pavements, except, perform the bond test using sawed cement mortar blocks or asphalt HMA blocks (consistent with the pavement type) prepared in accordance with the methods in the Laboratory Manual .