Understanding bitumen
Bitumen is a petroleum product that is used in road construction and repair. The quality characteristics of bitumen are its viscosity, plasticity, adhesion (adhesion of surfaces) and heat resistance.
Brief classification of bitumen
Bitumen are viscous and liquid:
1. Viscous bitumen. Depending on the degree of viscosity, there are several brands of such bitumen, the most common are: BND 70/100 and BND 60/90. The abbreviation BND stands here as "oil road bitumen", and the numbers indicate the depth of penetration of the needle into the material under standard conditions. You can buy high-quality road bitumen at http://aleko-bitum.com.ua/. Viscous bitumen is used for the manufacture of road surfaces from asphalt concrete masses.
2. Liquid bitumen, even at a temperature of 16-20 degrees, remains in a molten state. They are used as an interlayer between layers of asphalt and as a top layer of the pavement in order to increase its smoothness.
3. Bituminous emulsions are mixtures of bitumen with water with the addition of surfactants. Due to this composition, they are very economical, and in terms of strength they are not inferior, and sometimes even surpass, mixtures of pure bitumen. In addition, emulsions are not flammable, so the risk of fire during road works is minimized. The emulsion is a relatively new product, the scope of which is growing every year.
