The role of bitumen in road construction and asphalt

Mineral bitumen is a solid hydrocarbon that is found in underground mines in the form of a hard and black substance. This substance is formed from the evaporation of crude oil oils over time. Mineral bitumen is considered as a suitable insulation against water and temperature changes due to its adhesive properties. Mineral bitumen is more durable than non-petroleum bitumen, and for this reason, it has many applications in the preparation of modified asphalt. This material is also used in strengthening the wall of the extraction wells, because it makes it easier to direct the crude oil towards the existing wells.

According to the physical and chemical properties of Gilsonite mineral bitumen, the use of this material in the asphalt mixture has a significant effect on the performance, strength and stability of the road. Preventing asphalt rutting and increasing the heat resistance of refinery bitumen are other important uses of mineral bitumen. Due to the increase in asphalt resistance when using mineral bitumen, the need for servicing in the future is reduced and lower costs for asphalt repair are required. will be needed The analysis of mineral bitumen has shown that this substance increases the tension between asphalt and car tires and as a result the friction between them. Natural bitumen powder has also proven its effectiveness in increasing the adhesion and strength of asphalt in different weather conditions. Is. The high volume of Iran's natural bitumen reserves promises us that we can count on it for the renovation of various roads in the country. Adding natural bitumen to asphalt makes it completely uniform and ready to use.