seal coatings
Some roadways are more difficult to repair, more expensive.
Not all roadways are subject to the same conditions and elements.
It is noteworthy, however, that the Federal Aviation Administration Specifications (P-625, 627 and 628) accept only refined coal tar-based sealcoatings for use on airport projects, because the refined coal tar based sealcoatings offer greater resistance to jet fuel.
www.pavementpro.org/understanding.htm
Not all roadways are subject to the same conditions and elements.
It is noteworthy, however, that the Federal Aviation Administration Specifications (P-625, 627 and 628) accept only refined coal tar-based sealcoatings for use on airport projects, because the refined coal tar based sealcoatings offer greater resistance to jet fuel.
www.pavementpro.org/understanding.htm