In the process of producing paving asphalt, it is necessary to mix a mixture of stones, gravel, and sand with liquid asphalt. Before the mixing process, the aggregate must be dried and heated to mix with liquid asphalt. Most require the aggregate to be sprayed with additives before mixing with liquid asphalt after heating treatment. This additive can enhance the adhesion between aggregates and liquid asphalt, and avoid any residual moisture affecting adhesion in the form of steam.

When it comes to asphalt, it is often associated with a mixture of various hydrocarbons, and paving asphalt is one of them. It has strong performance and can withstand different weather conditions and various chemicals. It is a highly suitable adhesive material for various applications. After mixing stones and gravel (usually referred to as aggregates), it is very hard and is often used in the construction of streets, roads, and airport runways. Asphalt is sometimes believed to be obtained from minerals in two ways: one is from natural combustion deposits known as natural combustion asphalt or Brea, and the other is a product of the petroleum industry (known as petroleum asphalt, where animal bones are preserved to form natural asphalt deposits, such as the La Brea Asphalt Pit in Los Angeles, California).

The use of asphalt has a long history and it is one of the ancient engineering materials. In 6000 BC, the Sumerians used and produced asphalt for jointing and waterproofing in their thriving shipbuilding industry. In 2600 BC, the Egyptians used asphalt as a waterproof material and as a preservative for making mummies. Many ancient civilizations used asphalt as mortar for construction projects such as buildings, temples, paving bricks, irrigation stations, and reservoirs. The asphalt used by early human civilizations was naturally formed or discovered in geological formations. They are either soft and ductile mortar or hard and brittle black rock layers, sometimes referred to as bituminous coal. This natural asphalt is mostly formed when crude oil enters the surface layer through cracks. The filtering program removes lighter oil and gas through the erosion of the sun and wind, leaving behind black residue. Natural asphalt was widely used until the early 1990s. At the same time, a method of extracting asphalt from crude oil emerged. At the same time, the widespread popularity of cars has increased the demand for asphalt. Modern petroleum asphalt not only has the same durable quality as natural asphalt, but also has the advantage of higher consistency after being refined.

Nowadays, most asphalt is used for highway pavement. Paving material is a mixture of asphalt, cement, stones, and gravel that has undergone heat treatment. It is poured onto the road surface in a hot and steaming manner, leveled, and compacted by a roller. Another main use of asphalt is roll materials and asphalt shingles. This is actually achieved by adding felt to saturate the asphalt, mainly to help waterproof the roll material.