System and method for high throughput preparation of rubber-modified asphalt cement
This invention encompasses rubber modified asphalt cement compositions, as well as systems, apparatuses, methods for preparing, as well as methods for using rubber-modified asphalt cement compositions.
1. A method to prepare rubber-modified asphalt cement, comprising:
i) mixing rubber granules and asphalt to form a mixture;
ii) integrating the mixture with a high shear mixer (a) at a temperature of at least 510° F., and (b) for less than 90 minutes; and
iii) collecting the rubber-modified asphalt cement, the rubber-modified asphalt cement comprising rubber particles, the rubber particles having an average size of less than 1 micron.
2. The method of claim 1 , wherein the rubber-modified asphalt cement has an integration value of at least 99.
3. The method of claim 1 , wherein, prior to the mixing, at least a portion of the rubber granules are pre-wet with further asphalt.
4. The method of claim 1 , wherein the method is exclusive of air blowing.
5. The method of claim 1 , wherein the integrating is exclusive of oxidation.
6. The method of claim 1 , wherein the integrating is exclusive of substantial distillation of the asphalt.
7. The method of claim 1 , wherein the integrating is exclusive of substantial degradation of the asphalt.
8. The method of claim 1 , wherein integrating comprises devulcanizing at least a portion of the rubber granules.
9. The method of claim 1 , wherein the rubber-modified asphalt cement comprises greater than 35 wt. % integrated rubber, relative to the weight of the rubber-modified asphalt cement.
10. The method of claim 1 , wherein the rubber-modified asphalt cement comprises in the range of 16-35 wt. % integrated rubber, relative to the weight of the rubber-modified asphalt cement.
11. A rubber-modified asphalt cement prepared according to the method of claim 1 .
12. An emulsion comprising the rubber-modified asphalt cement of claim 11 .
13. A slurry seal comprising the rubber-modified asphalt cement of claim 11 .
14. A binder composition comprising the rubber-modified asphalt cement of claim 11 .
15. A surface sealer comprising the rubber-modified asphalt cement of claim 11 .
16. A paving composition comprising the rubber-modified asphalt cement of claim 11 .
17. A cured coating comprising the rubber-modified asphalt cement of claim 11 .
18. A surface composition comprising the rubber-modified asphalt cement of claim 11 .
19. A method of applying the surface composition of claim 18 to a surface, comprising: computer rate controlled spreading by an asphalt spreader truckers, spreading with a hand spray wand, or spreading with a squeegee.
20. An industrial surface coated with the surface composition of claim 18 , wherein the surface composition increases the corrosion resistance of the industrial surface.