Patent ID: 9637635
Date: 2017-05-02
CPC Classifications: C08K,C08L,C09D,Y10T

Claim:
1. A method of waterproofing or damp proofing a protected member having a surface with a sulfur-extended elastomer asphalt binder composition, the method comprising the steps of: combining an unsaturated elastomer with an asphalt binder maintained at an elastomer mixing temperature such that an intermediate asphalt binder mixture forms, the elastomer mixing temperature being at least 150° C. and the unsaturated elastomer including a styrene-butadiene-styrene (SBS) block copolymer; then combining elemental sulfur with the intermediate asphalt binder maintained at a sulfur mixing temperature such that the sulfur-extended elastomer asphalt binder composition forms with a viscosity that is less than the viscosity of the intermediate asphalt binder and that is no greater than 7500 cP per ASTM D449, the sulfur mixing temperature being no greater than 145° C.; and applying the sulfur-extended elastomer asphalt binder composition at a temperature in a range of from about ambient temperature to no greater than 145° C. to the surface of the protected member such that the sulfur-extended elastomer asphalt binder composition contacts, adheres to and forms a layer upon the surface of the protected member that is operable to prevent water migration through the protected member; where the sulfur-extended elastomer asphalt binder composition consists essentially of 5.0% elemental sulfur, 5.0% unsaturated elastomer, and 90.0% asphalt binder, each by total weight of the sulfur-extended elastomer asphalt binder composition, where the formed layer has a first side in contact with and adhered to the surface of the protected member and a second side that does not contact the surface of the protected member, and where the bonded layer of sulfur-extended elastomer asphalt binder has a bond strength with the surface of the protected member of at least about 150 kiloNewtons per meter squared (kN/m