Binder composition for improved tack coat and stress absorbing membrane interlayer application for road construction

Abstract

A binder composition for asphalt pavements that includes: an asphalt binder; an elastomeric polymer; a wax modifier; and optionally at least one of: i) fumed silica or fumed alumina; and ii) a saponified fatty acid and a resin acid gelling compound. The composition is applied as a tack coat and/or a stress absorbing membrane interlayer and is non-tracking.

1 - 18 . (canceled) 
     
     
         19 . A structure comprising:
 a pavement surface having a width; and   a binder composition applied to the pavement surface, wherein the binder composition covers a substantial portion of the width of the pavement surface, and wherein said binder composition comprises:
 at least one asphalt binder; 
 at least one elastomer; and 
 ethylene bis stearamide. 
   
     
     
         20 . The structure of  claim 19 , wherein the at least one elastomer comprises a styrene-butadiene-styrene polymer. 
     
     
         21 . The structure of  claim 19 , wherein the binder composition further comprises sulfur. 
     
     
         22 . The structure of  claim 19 , wherein the at least one elastomer comprises about 2 to about 5 wt. % of the binder composition. 
     
     
         23 . The structure of  claim 19 , wherein the at least one asphalt binder comprises about 85 to about 97 wt. % of the binder composition. 
     
     
         24 . The structure of  claim 19 , wherein the ethylene bis stearamide comprises about 1 to about 5 wt. % of the binder composition. 
     
     
         25 . The structure of  claim 19 , wherein the binder composition covers the entire width of the pavement surface. 
     
     
         26 . The structure of  claim 19 , further comprising an asphalt layer placed over the binder composition, wherein the binder composition is positioned between the pavement surface and the asphalt layer. 
     
     
         27 . The structure of  claim 26 , wherein the asphalt layer comprises a hot-mix asphalt.