Bagged, Rubber-Modified, Hot Mix Asphalt Pre-Mix
AssigneeM-B Companies, Inc.
InventorsSteven A. Muellenbach, Adam L. O'Connor
Life of this patent
Estimating the term…
Abstract
Packaged, rubber-modified, hot-mix asphalt pre-mix is prepared without first forming pellets of an asphalt binder and then coating the pellets with lime. In one embodiment the invention is a process of preparing a packaged, rubber-modified, hot-mix asphalt pre-mix in which a hot, rubber-modified asphalt binder is added directly to aggregate which is (1) of a temperature lower than that of the hot binder, and (2) held within a polyolefin package, e.g., a polyethylene bag.
Claims15
A packaged composition comprising:
- (A) Rubber-modified asphalt binder;
- (B) Non-bituminous adhesion promoter;
- and
- (C) Aggregate;
- the composition contained within a polyolefin package.
A process for making a packaged, rubber-modified asphalt pre-mix, the process comprising the steps of:
- (1) Mixing rubber and asphalt binder at an elevated temperature to form a rubber-modified, liquid asphalt binder;
- and
- (2) Adding the rubber-modified, liquid asphalt binder to a polyolefin package containing aggregate.
A method of preparing a molten patching material for repair of asphalt and concrete pavements, the method comprising the steps of:
- (1) Subjecting a rubber-modified, asphalt pre-mix contained within a polyolefin package, the pre-mix comprising:
- (A) Rubber-modified asphalt binder;
- and
- (B) Aggregate;
- to sufficient mixing to open the package;
- and
- (2) Subjecting the open package of rubber-modified asphalt pre-mix to sufficient mixing and heat to melt the package and form a substantially uniform blend of rubber-modified molten asphalt binder, aggregate and melted package.
A method of patching asphalt or concrete pavements, the method comprising the steps of:
- (1) Preparing a molten, rubber-modified, hot asphalt concrete from a rubber-modified, hot-mix asphalt pre-mix comprising an asphalt binder, aggregate and an adhesion promoter all contained within a polyolefin package;
- and
- (2) Depositing the molten, rubber-modified, hot asphalt concrete onto or into an area of the asphalt or concrete pavement in need of repair.
A packaged composition comprising:
- (A) Molded, rubber-modified asphalt binder;
- and
- (B) Non-bituminous adhesion promoter;
- the composition contained within a polyolefin package.
A process for making a packaged, rubber-modified asphalt binder to rejuvenate and rubberize recycled asphalt product (RAP), the process comprising the steps of:
- (1) Mixing rubber, asphalt binder and a non-bituminous adhesion promoter at an elevated temperature to form a rubber-modified, liquid asphalt binder;
- (2) Molding the rubber-modified, asphalt binder;
- and
- (3) Adding the molded, rubber-modified, liquid asphalt binder to a polyolefin package.
A process of rejuvenating recycle asphalt product (RAP), the process comprising the steps of:
- (1) Heating RAP,
- (2) Adding to the RAP a packaged, molded composition comprising:
- (A) Asphalt binder;
- (B) Rubber;
- (C) A non-bituminous adhesion promoter;
- and
- (D) A polyolefin package;
- the composition contained within the polyolefin package;
- and
- (3) Mixing the heated RAP and packaged, molded composition until both the package and molded composition are liquefied and form a substantially homogeneous blend with the RAP.
Dependencies are inferred from the claim text.