Mineral powder for asphalt concrete mixes

Fine stone flour used in the field of road construction and for the enrichment of cement mixtures is called mineral powder. This relatively new auxiliary material is in the process of active study and additional properties of powders have been discovered over the past few decades.Initially, mineral powders were used to a greater extent to save such an expensive material as bitumen, later it was discovered that the quality of asphalt, its density and resistance to deformation increases when the mixture is enriched with mineral powder.The properties of the component directly depend on the particle size of mineral powders and their origin. High-quality flour has an astringent effect on asphalt concrete mixtures and filling the free space between larger particles, allows the coating to be laid in a thinner layer without loss of quality.Production of mineral powder Today, mineral powder is made from various rocks, solid waste from metallurgical plants is also used.However, the main and most effective component of stone flour are calcareous rocks and dolomites. It is important to understand that the production process is not so simple, because the mills grinding the rock must produce strictly verified particle sizes and permissible deviation standards range in plus or minus 20 microns.Among the suppliers of mineral powders in the Sverdlovsk region, the Dorstroy company is widely known. The organization has been operating on the market for many years and is distinguished by the fact that it offers only premium products. In the manufacture of powders, no auxiliary components, silicon and sand rocks are used, only lime and dolomite components in strictly standard-compliant proportions.Types of mineral powders Flour is divided by several factors: grinding size, production components, auxiliary additives.If we proceed from raw materials, then powders are designated as follows:- MP 1 - made strictly according to the standard of carbonate rocks without impurities;- MP 2 - flour consists of silica and industrial waste.As practice shows, the production material is important, but not critical, that is, the use of each of the types is justified and effective.The size of the particles and their porosity have a direct effect on the properties that mixtures receive when enriched with mineral powders. That is why materials that do not correspond to strictly defined sizes are classified as second-rate and sold at a bargain price. The porosity of mineral powders is responsible for the quality of adhesion, therefore it is considered a very important factor.In addition, mineral powders can be activated and non-activated. Non-activated - are flour that has gone out of production, complies with GOST standards, but is not enriched with special additives. Surfactants are introduced into activated powders in strictly defined proportions to improve the quality of the mixture, giving it moisture resistance, more elasticity and strength.Today mineral powders are a mandatory component of asphalt concrete mixes, widely used in construction, chemical industry and glass factories. 1XBET Free Promo Code 130%. The promo code when registering in the 1xBet BC is designed to attract new customers. A set of letters and numbers is entered when creating an account, which raises the amount of the first deposit to$ 130 . The editorial board reminds that in order to receive the bonus, you will need to go through the wagering procedure. The bookmaker asks you to put down the amount in express trains. The coefficient of each individual bet is at least 1.4. After passing the wagering, the selected amount of money will transfer from the bonus to the main account.