Fuel-resistant liquid asphalt binders and methods of making the same
A fuel-resistant liquid asphalt binder including a composition of fatty amine derivatives for improving the flowability and workability of a bituminous asphalt mix. The fuel-resistant liquid asphalt binder may include 0.4 wt % to 0.7 wt % of a composition of fatty amine derivatives, 2 wt % to 5 wt % styrene-butadiene-styrene, and 2 wt % to 5 wt % high acetate content ethyl vinyl acetate. The fuel-resistant liquid asphalt binder may be mixed with an aggregate to form a bituminous asphalt mix at temperatures ranging from 330° F. to 280° F.
1. A fuel-resistant liquid asphalt binder comprising:
a liquid asphalt binder base having a concentration in the range of 89.3 wt % to 95.6 wt %;
styrene-butadiene-styrene having a concentration in the range of 2 wt % to 5 wt %;
high acetate content ethylene vinyl acetate having a concentration in the range of 2 wt % to 5 wt %; and
a composition of fatty amine derivatives having a concentration in the range of 0.4 wt % to 0.7 wt %.
2. The fuel-resistant liquid asphalt binder of claim 1 , wherein the styrene-butadiene-styrene has a concentration in the range of 3 wt % to 4 wt %.
3. The fuel-resistant liquid asphalt binder of claim 1 , wherein the high acetate content ethylene vinyl acetate has a concentration in the range of 3 wt % to 4 wt %.
4. The fuel-resistant liquid asphalt binder of claim 1 , wherein the composition of fatty amine derivatives has a concentration in the range of 0.45 wt % to 0.55 wt %.
5. The fuel-resistant liquid asphalt binder of claim 1 , wherein the fuel-resistant liquid asphalt binder has an ASTMD7173 maximum temperature difference of less than or equal to 40° F. when using a ASTM D36 Ring and Ball apparatus.
6. The fuel-resistant liquid asphalt binder of claim 1 , wherein the fuel-resistant liquid asphalt binder has a minimum performance grade of PG 82-22.
7. The fuel-resistant liquid asphalt binder of claim 1 , wherein the fuel-resistant liquid asphalt binder has an ASTM D6084 elastic recovery at 25° C. of greater than or equal to 85%.
8. A bituminous asphalt mix comprising:
a fuel-resistant liquid asphalt binder comprising:
a liquid asphalt binder base having a concentration in the range of 89.3 wt % to 95.6 wt %;
styrene-butadiene-styrene having a concentration in the range of 2 wt % to 5 wt %;
high acetate content ethylene vinyl acetate having a concentration in the range of 2 wt % to 5 wt %; and
a composition of fatty amine derivatives having a concentration in the range of 0.4 wt % to 0.7 wt %,
air voids; and
an aggregate.
9. The bituminous asphalt mix of claim 8 , wherein the fuel-resistant liquid asphalt binder has a concentration in the range of 4 wt % to 9 wt %.
10. The bituminous asphalt mix of claim 8 , wherein the air voids have a concentration in the range of 2 vol % to 3 vol %.
11. The bituminous asphalt mix of claim 8 , wherein the mix has a weight loss by fuel immersion of less than 2.5% when measured according to FAA P-601 test specifications.
12. A method of making a fuel-resistant liquid asphalt binder, the method comprising:
mixing a liquid asphalt binder base and styrene-butadiene-styrene in a high shear mixer, thereby forming a first mixture;
adding at least one cross-linking agent to the first mixture;
curing the first mixture;
mixing the first mixture with high acetate content ethylene vinyl acetate in a high shear mixer; thereby forming a second mixture; and
mixing a composition of fatty amine derivatives with the second mixture, thereby forming the fuel-resistant liquid asphalt binder;
wherein the liquid asphalt binder base has a concentration in the range of 89.3 wt % to 95.6 wt % in the fuel-resistant liquid asphalt binder; the styrene-butadiene-styrene has a concentration in the range of 2 wt % to 5 wt % in the fuel-resistant liquid asphalt binder; the high acetate content ethylene vinyl acetate has a concentration in the range of 2 wt % to 5 wt % in the fuel-resistant liquid asphalt binder; and the composition of fatty amine derivatives has a concentration in the range of 0.4 wt % to 0.7 wt % in the fuel-resistant liquid asphalt binder.
13. The method of claim 12 , wherein the styrene-butadiene-styrene has a concentration in the range of 3 wt % to 4 wt % in the fuel-resistant liquid asphalt binder.
14. The method of claim 12 , wherein the high acetate content ethylene vinyl acetate has a concentration in the range of 3 wt % to 4 wt % in the fuel-resistant liquid asphalt binder.
15. The method of claim 12 , wherein the composition of fatty amine derivatives has a concentration in the range of 0.45 wt % to 0.55 wt % in the fuel-resistant liquid asphalt binder.
16. The fuel-resistant liquid asphalt binder of claim 1 , wherein the fuel-resistant liquid asphalt binder has an ASTMD7173 maximum temperature difference of less than or equal to 40° F. when using a ASTM D36 Ring and Ball apparatus,
wherein the fuel-resistant liquid asphalt binder has a minimum performance grade of PG 82-22, and
wherein the fuel-resistant liquid asphalt binder has an ASTM D6084 elastic recovery at 25° C. of greater than or equal to 85%.