It is the subject of the present invention to provide a solvent-free
ambient-temperature curable composition, excellent in water-resistant
adhesion, storage stability and curability, and generates neither smoke
nor odor when working therewith. The relevant problem is solved by a
curable composition including (A) a natural asphalt and/or petroleum
asphalt, (B) a polyoxyalkylene polymer having one or more reactive
silicon groups capable of cross-linking by forming siloxane bonds through
silanol condensation reaction.