Asphalt cement (liquid bitumen) Also called (mineral pitch), asphalt cement (liquid bitumen) is obtained in two forms, the first is naturally available in several parts of the world such as the United States, Venezuela and many other countries From the by-products of crude oil (heavy waste) obtained from oil refineries, all the bone structure of animals and humans that died in the past decomposes and causes the formation of crude oil underground that has been preserved underground for thousands of years They remain.

The first to the first engineering discovered by man in ancient history, as well as the earliest civilization ordered, about 600 BC Sumerian asphalt cement (natural liquid qi). , liquid 00 years before the birth of the Egyptians asphalt rain (natural liquid bitumen) ask them to resist rain and water and also for their mothers mummy asphalt (natural liquid bitumen) information and protected their bodies, and in 2018/1/2/2019 between bricks and blocks Purpose of construction, before the construction of crude oil refineries and asphalt power (industry), own asphalt cities (industrial), own asphalt cities naturally under the geological layers of soft and loose soil and high workability (High Workability) such as yarn and without rock veins Layers of soil called bitumen coal.

Third Way

Natural asphalt is formed when underground crude oil rises to the surface due to cracks in the ground. This is due to the action of the sun and wind Natural cement (natural liquid bitumen) On the same idea, crude oil refineries were built, naphtha, gasoline, kerosene, gasoline and industrial liquid bitumen were produced, natural liquid bitumen until But after the construction of crude oil refineries, the use of natural liquid bitumen decreased due to the increased demand for liquid bitumen for road construction It replaced natural liquid bitumen.