1. Warm asphalt
Hot asphalt refers to asphalt that materials are combined at high temperature and used under the same conditions. Hot asphalt or hot asphaltic concrete should be consumed immediately after production so that its adhesion does not decrease. In the production of this material, bitumen, gravel, sand and stone materials (about 90%) are used, which are generally At a temperature of 105 to 163 degrees Celsius, it becomes a paste and melts and then it is stretched on the desired surfaces. In fact, asphalt concrete containing stone materials has many uses, while warm asphalt produced from fine sand is used only in special cases.
🔸 Partial asphalt
This type of warm asphalt has a high resistance to direct contact with the environment and, in general, external destructive factors. This layer is made of mire and bitumen stone grains to have higher resistance.
Asphalt lining
The type of liner is placed between the top and the asphalt layer below it, and its stone grains are larger than the stone grains of the top layer. This type of asphalt is mostly used for places that bear a heavy load.
Bituminous asphalt
This category is the first part of the asphalt pavement that is placed directly on the intended surface. Also, this material is a combination of 50 mm stones and bitumen and is usually used for drainage.
Macadam asphalt
Macadam asphalt is also made from crushed coarse stones and has a lower percentage of bitumen. It is also sometimes used as a topping.
2. Protective asphalt
As it is clear from the name of this material, protective asphalt is a type of asphalt that is used to protect a specific area. This type of asphalt does not have much resistance and is not suitable for the road construction industry, and sometimes it is used as a protective layer of asphalt concrete. Protective asphalt is usually two layers and has a thickness of 12 mm. One of its most important advantages is this. is that bitumen is not used during production and requires little equipment for implementation; For this reason, it is very economical.
Self-protective asphalt can be divided into several main categories: Tack Coat
◾️Seal Tek seal coat
◾️Prime coat
◾️Road Mix Protective Asphalt
3. Cold asphalt
Cold asphalt is a type of asphalt whose ingredients such as bitumen and stone materials are combined at ambient temperature; Although sometimes it is necessary to heat some of its materials for a better composition.
To produce this type of asphalt, instead of synthetic bitumen, natural bitumen or Gilsonite, bitumen or soluble bitumen is used, which does not need to be heated. do not have The most important advantage of these asphalts, compared to hot asphalt, is long-distance transportation and the possibility of storing them.