IP Library › Granted Patent US 9,181,435
Granted Patent B2
US 9,181,435 · App. 13/966,571 · Granted Nov 10, 2015

Sulfur extended asphalt modified with crumb rubber for paving and roofing

Inventors: Mohammed Al-Mehthel (Dhahran, SA); Mohammad Anwar Parvez (Dhahran, SA); Hamad I. Al-Abdul Wahhab (Dhahran, SA); Ibnelwaleed A. Hussein (Dhahran, SA); Saleh H. Al-Idi (Dhahran, SA)
Assignees: Saudi Arabian Oil Company; King Fahd University of Petroleum and Minerals
C08L95/00C08L17/00C08L2555/34C08L2555/54C08L2555/80
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 9,181,435
App. No.
13/966,571
Granted
Nov 10, 2015
Kind
B2
Abstract

This invention relates to asphalt compositions. The invention provides 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 of the composition as compared to the softening point of the base asphalt.

Claims (23)

1. A sulfur rubber asphalt binder composition comprising:

about 58% by weight a base asphalt having a softening point;

about 40% by weight elemental sulfur; and

2% by weight a crumb rubber material;

wherein the crumb rubber material is combined with the base asphalt and the elemental sulfur to create the sulfur rubber asphalt binder composition, and

wherein the crumb rubber material is present in the sulfur rubber asphalt binder composition in an amount effective to increase the softening point of the composition as compared to the softening point of the base asphalt.

2. An asphalt composition comprising:

the sulfur rubber asphalt binder composition of claim 1 ;

an aggregate material; and

a filler.

3. The asphalt composition of claim 2 wherein the aggregate material is a gravel.

4. The asphalt composition of claim 2 wherein the filler is a mineral filler.

5. The asphalt composition of claim 2 wherein the asphalt composition has greater temperature resistance than that of asphalt alone.

6. The asphalt composition of claim 2 wherein the asphalt composition has improved waterproofing properties as compared to that of the base asphalt.

7. The asphalt composition of claim 2 wherein the asphalt composition has improved damp-proofing properties as compared to that of the base asphalt.

8. The asphalt composition of claim 2 is use in paving.

9. The asphalt composition of claim 2 is use in roofing.

10. A sulfur rubber asphalt binder composition consisting essentially of:

54% by weight a base asphalt having by a softening point;

40% by weight elemental sulfur; and

6% by weight a crumb rubber material;

wherein the crumb rubber material is combined with the base asphalt and the elemental sulfur to create the sulfur rubber asphalt binder composition, and

wherein the crumb rubber material is present in the sulfur rubber asphalt binder composition in an amount effective to increase the softening point of the composition as compared to the softening point of the base asphalt.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 17, 2014
From: AL-MEHTHEL, MOHAMMED; AL-IDI, SALEH H.; PARVEZ, MOHAMMAD ANWAR; AL-ABDUL WAHHAB, HAMAD I.; HUSSEIN, IBNELWALEED A.
To: SAUDI ARABIAN OIL COMPANY; KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
Reel/Frame 032700/0599 →
Continuity (1)
Related Publication 20150051322A1 · Feb 19, 2015