A roofing bitumen composition includes a paving grade bitumen feedstock, a low MW polyolefin, and 9-60% of a material selected from the group of kraft lignin, recycled fibrous material, recovered bitumen from recycled asphalt shingles (RAS), reclaimed asphalt pavement (RAP), recycled tire rubber (RTR), and combinations thereof. This roofing bitumen composition has a calculated reduction in scope 3 carbon footprint between about 5% and 60%.

An asphalt binder includes asphalt, an isocyanate asphalt modifier, one or more of a block styrene butadiene or styrene butadiene styrene polymer, an adhesion promotor comprising one or more of aliphatic polyamide, polyethylene polyamine, and aliphatic polyol, and a fuel resistant polymer resin derived from polyethylene terephthalate. A method for making an asphalt binder is also provided.

The current invention concerns composition comprising bitumen, one or more plasticity modifying agent(s), and lignin, as well as methods and uses related to such compositions. In particular, compositions are disclosed with improved properties, such as mixing properties.

Asphalt additives and methods of producing the same are provided. In an exemplary embodiment, an asphalt additive includes a granule. The granule includes a core, and the granule also includes a coating affixed to an outer surface of the core. The core includes an elastomer, and the coating includes a polyolefin.

Provided is an asphalt modifier for an asphalt mixture and an asphalt mixture containing the same, and more particularly, to an asphalt modifier in which a coating layer containing low-melting-point polyethylene and an inorganic material is formed on a reinforcing fiber bundle. Preferably, the asphalt modifier according to the present disclosure is intended to be mixed with aggregate and an asphalt binder, and comprises: a reinforcing fiber bundle having a length of 8 to 34 mm and composed of a plurality of reinforcing fiber strands; and a coating layer forming the envelope of the reinforcing fiber bundle and comprising polyethylene and an inorganic material.

Compositions for pavements and/or paved surfaces and methods of making a paved surface are described. In some embodiments, a composition comprises aggregate in an amount of 50-99 wt. %; bitumen in an amount of 4-8 wt. %; and plastic in an amount of 0.1-4 wt. %, based on the total weight of the asphalt composition; wherein the plastic comprises high density polyethylene (HDPE) and/or polypropylene (PP), or comprises low density polyethylene (LDPE) and PP. In some implementations, the plastic comprises recycled plastic. Additionally, in some embodiments, the plastic comprises high density polyethylene, low density polyethylene, polypropylene, or a combination thereof, and excludes or is essentially free of polystyrene, polyvinylchloride, polyethylene terephthalate, polyacrylate, polyacrylic acid, polycarbonate, and polylactic acid.

The current invention concerns composition comprising bitumen, one or more plasticity modifying agent(s), and lignin, as well as methods and uses related to such compositions. In particular, compositions are disclosed with improved properties, such as mixing properties.

The present invention provides an asphalt composition obtained by blending an asphalt and an addition polymerization-type polymer, the addition polymerization-type polymer having a hydroxyl value of 10 mgKOH/g or more and 60 mgKOH/g or less and having a weight average molecular weight (M.sub.w) of 2,500 or more and 70,000 or less.

A mixture made from or containing T1) from 99 wt % to 75 wt % of bitumen, and T2) from 1 wt % to 25 wt % of a polymer composition made from or containing A) 5-35% by weight of a propylene ethylene copolymer; B) 20-50% by weight of an ethylene homopolymer; and C) 30-60% by weight of a terpolymer of ethylene, propylene and 1-butene derived units.

Disclosed herein is an asphalt modifier comprising at least two modifiers, wherein one of the asphalt modifiers is at least a plastic modifier used to encapsulate the other modifier. The other asphalt modifier is preferably polyphosphoric acid or solid phosphoric acid. The plastic modifier can be recycled plastic.