VEGETABLE OIL AND ASPHALT COMPOSITIONS AND METHODS OF USING THE SAME
Vegetable oil compositions having an ethyl ester content of from 0 to 18 weight percent of the total weight of the oil composition, and uses thereof are provided.
1 . An asphalt binder blend composition comprising i) an asphalt binder composition comprising bitumen in the absence of aggregates, and ii) a corn oil composition, wherein the corn oil composition comprises a free fatty acid content of no greater than 5% w/w based on the total weight of the oil composition and an ethyl ester content that is 0% up to about 18% w/w based on the total weight of the oil composition; and optionally one or more of: an iodine value of not greater than 125; a combined moisture and insoluble content of no greater than 1.5% w/w based on the total weight of the composition; and a further component selected from the group consisting of: a lutein content of at least 50 mcg/g, a cis-lutein/zeaxanthin content of at least 10 mcg/g, an alpha-cryptoxanthin content of at least 5 mcg/g, a beta-cryptoxanthin content of at least 5 mcg/g, an alpha-carotene content of at least 0.5 mcg/g, and a cis-beta-carotene content of at least 0.1 mcg/g.
2 . The asphalt binder blend composition of claim 1 , wherein the ethyl ester content is greater than about 6% w/w in the total weight of the oil composition.
3 . The asphalt binder blend composition of claim 1 , wherein the ethyl ester content is greater than about 10% w/w in the total weight of the oil composition.
4 . The asphalt binder blend composition of claim 1 , wherein the asphalt binder composition comprises performance grade asphalt.
5 . The asphalt binder blend composition of claim 1 , wherein the corn oil is about 0.5 wt % to about 25 wt % based on weight of the asphalt binder composition or a combined weight of the asphalt binder composition and the corn oil composition.
6 . A method to alter the properties of asphalt, comprising:
combining recycled asphalt and a corn oil composition, and optionally virgin asphalt, to provide an asphalt rejuvenation composition, or combining virgin asphalt and a corn oil composition to provide an asphalt modification composition, wherein the amount of the corn oil composition is effective to alter one or more properties of the asphalt,
wherein the corn oil composition has a free fatty acid content of no greater than 5% w/w based on the total weight of the oil composition and an ethyl ester content of from 6% to about 18% w/w based on the total weight of the oil composition; and optionally an iodine value of not greater than 125 and/or a combined moisture and insoluble content of no greater than 1.5% w/w based on the total weight of the composition; and also optionally a further component selected from the group consisting of: a lutein content of at least 50 mcg/g, a cis-lutein/zeaxanthin content of at least 10 mcg/g, an alpha-cryptoxanthin content of at least 5 mcg/g, a beta-cryptoxanthin content of at least 5 mcg/g, an alpha-carotene content of at least 0.5 mcg/g, and a cis-beta-carotene content of at least 0.1 mcg/g.
7 . The method of claim 6 , wherein the property that is altered is viscosity, ΔT c value, rutting or thermal cracking.
8 . The method of claim 6 , wherein the combining occurs at temperatures from about 50° C. to about 300° C.
9 . The method of claim 6 , wherein the further component comprises a lutein content of at least 50 mcg/g, a zeaxanthin content of at least 30 mcg/g, a cis-lutein/zeaxanthin content of at least 10 mcg/g, an alpha-cryptoxanthin content of at least 5 mcg/g, a beta-cryptoxanthin content of at least 5 mcg/g, an alpha-carotene content of at least 0.5 mcg/g, a beta-carotene content of at least 1 mcg/g, a cis-beta-carotene content of at least 0.1 mcg/g, an alpha-tocopherol content of at least 50 mcg/g, a beta-tocopherol content of at least 2 mcg/g, a gamma-tocopherol content of at least 300 mcg/g, a delta-tocopherol content of at least 15 mcg/g, an alpha-tocotrienol content of at least 50 mcg/g, a beta-tocotrienol content of at least 5 mcg/g, a gamma-tocotrienol content of at least 80 mcg/g, a delta-tocotrienol content of at least 5 mcg/g, or any combination thereof.
10 . The method of claim 6 , wherein the ethyl ester content is greater than about 6% w/w in the total weight of the oil composition.
11 . The method of claim 6 , wherein the recycled asphalt, virgin asphalt and the corn oil composition are combined.
12 . The method of claim 6 , wherein the virgin asphalt and the corn oil composition are combined.
13 . An asphalt mix composition, comprising: virgin asphalt and/or recycled asphalt, aggregate and a corn oil composition having a free fatty acid content of no greater than 5% w/w based on the total weight of the composition and an ethyl ester content of from 0% to about 18% w/w based on the total weight of the oil composition; and optionally an iodine value of not greater than 125 and/or a combined moisture and insoluble content of no greater than 1.5% w/w based on the total weight of the composition; and also optionally a further component selected from the group consisting of: a lutein content of at least 50 mcg/g, a cis-lutein/zeaxanthin content of at least 10 mcg/g, an alpha-cryptoxanthin content of at least 5 mcg/g, a beta-cryptoxanthin content of at least 5 mcg/g, an alpha-carotene content of at least 0.5 mcg/g, and a cis-beta-carotene content of at least 0.1 mcg/g.
14 . The asphalt mix composition of claim 13 , wherein the ethyl ester content is greater than about 6% w/w in the total weight of the oil composition.
15 . The asphalt mix composition of claim 13 , wherein the ethyl ester content is greater than about 10% w/w in the total weight of the oil composition.
16 . The asphalt mix composition of claim 13 , wherein the corn oil composition is about 0.5 wt % to about 50 wt % based on weight of bitumen in the virgin asphalt and/or the recycled asphalt in the absence of aggregates or a combined weight of bitumen in the virgin asphalt and/or the recycled asphalt in the absence of aggregates and the oil.
17 . The asphalt mix composition of claim 13 , which comprises recycled asphalt and virgin asphalt.
18 . The asphalt mix composition of claim 13 , which comprises recycled asphalt but not virgin asphalt.
19 . The asphalt mix composition of claim 13 , which comprises virgin asphalt but not recycled asphalt.
20 . The asphalt mix composition of claim 13 , wherein the asphalt mix composition has altered viscosity, ΔT c value, rutting or thermal cracking relative to a corresponding asphalt mix in the absence of the corn oil.