Algae-resistant bitumen-containing materials
AssigneeArizona Board of Regents on behalf of Arizona State University
InventorsElham Fini, Farideh Pahlavan, Albert Hung
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Abstract
A modified bitumen composition includes bitumen, biomass oil including one or more phenolic compounds, and added sulfur. The modified bitumen composition includes between about 5 wt % and about 25 wt % of the added sulfur, at least some of the added sulfur is present as polysulfide chains, and at least some of the one or more phenolic compounds are configured to covalently bind to the polysulfide chains. Making a modified bitumen includes combining bitumen and elemental sulfur to yield sulfur-extended bitumen, and combining the sulfur-extended bitumen with biomass oil including one or more phenolic compounds to yield the modified bitumen.
Claims16
A modified bitumen composition comprising:
- bitumen;
- biomass oil comprising one or more phenolic compounds;
- and
- added sulfur,
- wherein the modified bitumen composition comprises between about 5 wt % and about 25 wt % of the added sulfur, at least some of the added sulfur is present as polysulfide chains, the added sulfur comprises about 70 wt % to about 90 wt % crystalline sulfur, and at least some of the one or more phenolic compounds are configured to covalently bind to the polysulfide chains.
A method of making a modified bitumen, the method comprising:
- combining bitumen and elemental sulfur to yield sulfur-extended bitumen;
- and
- combining the sulfur-extended bitumen with biomass oil comprising one or more phenolic compounds to yield the modified bitumen,
- wherein the modified bitumen comprises between about 5 wt % and about 25 wt % of the added sulfur, at least some of the elemental sulfur is present as polysulfide chains, the elemental sulfur comprises about 70 wt % to about 90 wt % crystalline sulfur, and at least some of the one or more phenolic compounds are configured to covalently bind to the polysulfide chains.
Dependencies are inferred from the claim text.