Asphalt is divided into three types: coal tar pitch, petroleum asphalt, and natural asphalt. Among them, coal tar pitch is a by-product of coking. Petroleum asphalt is the residue after crude oil distillation. Natural asphalt is stored underground, some forming ore layers or accumulating on the earth's surface. Asphalt is used in industries such as coatings, plastics, rubber, and for paving roads. Asphalt is a dark brown complex mixture composed of hydrocarbons with different molecular weights and their non-metallic derivatives. It is a type of high-viscosity organic liquid that exists in a liquid state, appears black on the surface, and is soluble in carbon disulfide. Asphalt is a moisture-resistant organic cementitious material