Sulfur extended asphalt modified with crumb rubber for paving and roofing
AssigneesSaudi Arabian Oil Company, King Fahd University of Petroleum and Minerals
InventorsMohammed Al-Mehthel, Mohammad Anwar Parvez, Hamad I. Al-Abdul Wahhab, Ibnelwaleed A. Hussein, Saleh H. Al-Idi
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Abstract
The present invention relates to asphalt compositions. The present invention provides for a sulfur rubber asphalt binder composition that includes a base asphalt having a softening point, elemental sulfur, and a crumb rubber material. The crumb rubber material is combined with the base asphalt and the elemental sulfur to create the sulfur rubber asphalt binder composition. The crumb rubber material is present in the sulfur rubber asphalt binder in an amount effective to increase the softening point as compared to the softening point of the base asphalt.
Claims14
A sulfur rubber asphalt binder composition comprising:
- a base asphalt,
- elemental sulfur, and
- a crumb rubber material,
- where the elemental sulfur is in a range of from about 30 to about 50 weight percent and the crumb rubber material is in a range of from about 1 to about 6 weight percent, each by weight of the sulfur rubber asphalt binder composition.
Dependencies are inferred from the claim text.