ABSTRACT
ABSTRACT: In this study, three types of gelled hot applied joint sealants are produced. A series of different tests have been used in the asphalt industry according to the ASTM procedures, to characterize the behavior of joint sealants. In addition, the field evaluation was performed on these sealants after 12 months and 18 months of it application in three selected sites in Heilongjiang Province located in the northern part of China. Results indicated that joint sealant complied with the requirements of ASTM D1191, D6690-06a, and D3405. The field evaluation observations revealed that starch joint sealant type 2 is a reliable material for crack treatment. The results also revealed that this sealant reduced the safe heating and application temperature by 12% and 12.5%, respectively, when compared with hot rubber asphalt crack sealant, as well as it shows resistant to fuels, most common chemicals and solvents.
