The mineral powder is the important active structural component of a blacktop. Thanks to the developed surface adsorbing on the most part of bitumen, the mineral powder gives to a blacktop necessary properties, i.e. mechanical durability, ability to elastic and plastic deformations that essentially improves qualities of a road covering, increases term of its service and gives considerable economy at operation. Working life is not limited.
Technical characteristics of mineral powder:
| Grain structure, % on weight, not less | |
| Smaller than 1,25 mm | 100 |
| Smaller than 0,315 mm | 90 |
| Smaller than 0,071 mm | 70-80 |
| Porosity, % on volume, no more than | 35 |
| Swelling of samples from a mix of a powder with bitumen, % on volume, no more than | 2,5 |
| Humidity, % on weight, no more than | 1 |
The annual volume of output makes approximately 200 thousand tons.
The mineral powder is made in accordance with GOST 16557-2005.
Transportation of a dolomitic flour is carried out by railway transport on cement trucks to 50 tons (unloading by the compressed air), hoppers - cement trucks to 60 tons (unloading on raised ways), or motor transport with special tanks.
