3723Hot-poured, Elastic Type Joint and Crack Sealer

3723.1SCOPE

Provide hot-poured elastic type joint and crack sealer to seal joints and cracks in concrete and bituminous pavements, Bridges, and other Structures.

3723.2REQUIREMENTS

Provide a sealant Material meeting the following requirements:

homogeneous compound

does not contain a dispersed or settling component

discontinuities A Physical Requirements Provide sealant meeting the requirements of ASTM D6690, Standard Specification for Joint and Crack Sealants, Hot Applied, for Concrete and Asphalt Pavements, Type II and the following modifications: Table 3723.2-1 ASTM D6690, Type II Modifications Test Requirement Cone penetration at 77°F, 150 grams, 5 seconds 60 – 90 dmm Bond at −20°F, 3 cycles, 100 percent extension No adhesion or cohesion bond failure after 3 cycles Mandrel bend test at −29°F, 1 inch mandrel No cracking Resilience at 77°F ≥ 40 percent B Packaging and Marking Package and ship the sealant Material in boxes no greater than 50 pounds. Mark the containers with the following information:

3723.3SAMPLING AND TESTING

A Sampling Provide samples in 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 with each sealant batch. B Methods of Test B.1 Bond 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 Portland Cement Concrete Pavements, except perform the bond test using sawed cement mortar blocks or asphalt HMA blocks (consistent with the pavement type) prepared using the methods found in the Laboratory Manual.

B.2 Mandrel Bend Test ASTM D522, Standard Test Methods for Mandrel Bend Test of Attached Organic Coatings, Method B Perform the Mandrel Bend Test at −29°F using a 1 inch mandrel, bending the specimen 180° over 5 seconds. The Materials Engineer will prepare test specimens meeting the requirements of D6690, Standard Specification for Joint and Crack Sealants, Hot Applied, for Concrete and Asphalt Pavements, Type II, Flow Test, and condition the specimens at −29°F for at least 4 hours.