UV light activated self-healing asphalt binder and uses thereof
AssigneeBoard of Supervisors of Louisiana State University and Agricultural and Mechanical College
InventorsSharareh Shirzad, Marwa M. Hassan
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Abstract
Disclosed herein is a self-healing asphalt binder composition comprising i) an asphalt binder, ii) an oxetane substituted polysaccharide, and iii) a polyurethane, as well as asphalts comprising said self-healing asphalt binder and an asphalt mixture. Also disclosed are methods of making the self-healing asphalt binder.
Claims16
A self-healing asphalt binder composition comprising i) an asphalt binder, ii) an oxetane substituted polysaccharide, and iii) a prepolymer formed by separately reacting a polyol and a tri-functional isocyanate.
A method of making a self-healing asphalt binder comprising the steps of:
- (a) forming a dispersion of an oxetane-substituted polysaccharide in an asphalt binder;
- (b) separately reacting a polyol and a tri-functional isocyanate to form a prepolymer;
- and
- (c) adding the prepolymer of step (b) to the dispersion of step (a);
- and
- (d) mixing to form the self-healing asphalt binder composition.
Dependencies are inferred from the claim text.