Described herein are asphaltite-based adducts and polymers and methods of making the same. Asphaltite may be modified with a reagent such as polyphosphoric acid. The reagent may modify the asphaltite or portions or moieties thereof to possess a positive charge. The reagent may also activate the asphaltite or portions thereof to enable epoxy and/or urethane polymerization reactions within the asphaltite or portions thereof, and/or to enable cross-linking of the asphaltite-based polymers or adducts. Products incorporating asphaltite-based polymers and adducts are also described.

A solid bitumen pellet, including a mixture of bitumen and an additive, where the additive operates to increase the viscosity of the mixture. Optionally, the pellet includes a protective shell.

Binder compositions and methods of producing the same are provided. In an exemplary embodiment, a binder composition includes asphalt and ground tire rubber particles. The ground tire rubber particles have a nominal product designation (Alternative US Sieve Size) defined by ASTM D5603-23 of equal or higher than about 200 mesh, and where the binder composition includes the ground tire rubber particles in an amount of from about 5 to about 14 weight percent, based on a total weight of the binder composition. the binder composition is stable.