History Magnelita

And what is it - magnesite cement? Modern building science describes a kind of "portrait" of an ideal material for the future: "It must be universal - have both high structural ability and heat-insulating properties; absolutely necessary for it to be non-flammable, durable, waterproof, clean and has enough decorative qualities that eliminates the need for additional external and partly internal finishing of buildings and structures is desirable that it was received from mineral raw materials. " Added to this is that such material should be made on existing equipment and, most importantly, to be competitive in comparison with uzkoprofilnyh materials analogs. But as often happens, everything is new - it is well forgotten past, from which only need to shake off the "century of dust", slightly modernized. It turns out that our previous generations have decided to issue 150 years ago. Caustic magnesite is obtained after firing at relatively low temperatures of some natural minerals in the composition of which a significant amount of carbonate or magnesium hydroxide (magnesite, dolomite), mixing an aqueous solution of magnesium salts (sulfate or magnesium chloride - bischofite) similar in composition to the sea, forms a plastic mass, astringent properties. The composition and properties of the binders were described in the mid-nineteenth century French engineer Sorel made the beginning of its use in construction, as well as the name of the Moscow industrial and construction company Sorrel Ecology. The uniqueness of magnesite cement is a combination of its high binding properties, and compatibility with virtually all types of fillers, including organic natural and artificial origin. Cement stone formed on the basis of a magnesia binder is a solid solution of salts of complex composition. It is based on magnesia binders receive various stone-like materials with predetermined properties under the title "magnelit. Depending on what fillers are used magnelit has the following properties: mechanical strength under compression, at the most high-strength concrete (and the bending strength of concrete greater than 3-5 times! Without additional reinforcement materials), as well as its short set. In addition, it is the most durable of all known insulating building materials for mineral binders with them at equal densities, weathering at the most traditional building materials; absolute oil resistance and salt resistance (when the impact of oil, petroleum products, seawater magnolity only gaining strength), decorative, that is, the possibility of reliably simulate many natural materials (from wood to malachite), helped by compatibility with various pigments, excellent polishing properties, transparency binder in a thin layer; fire safety - if sufficiently massive construction of magnolita withstand fire category 5 without degradation of material and selection any carcinogenic substances; fungicidal, bactericidal and biocide that does not allow to develop fungi and bacteria, and bitter-salty taste bischofite also hindered the emergence of insects and rodents, has a low dielectric constant and conductivity, stable over time and little dependent on the ambient humidity . For the production of special purpose structures designed to protect against electromagnetic radiation, this material is not replaced. Surface structures of magnesite are not electrified and eliminates the formation of sparks. magnesia floors free from dust, have little or no shrinkage, ie, arranged a solid coating does not require cutting of expansion joints, durable and high strength, have high hardness and low Abrasion resistant to shock loads. Possess high adhesion to virtually all types of organic and mineral fillers in the binder, as well as good adhesion to concrete, brick, wooden base. Among other advantages, preservative properties magnelita allow you to apply even toxic aggregates in the manufacture of construction products, which subsequently will have a background that meets sanitary standards. A significant amount of chemically bound water magnesia cement paste does magnolia best of existing concrete for shielding from radiation injury. Magnesite cement and products based on it are biologically inert, that is environmentally sound. There is no doubt that such material is in Russia, where there are more than half the world's reserves of magnesite raw material, can be simply brilliant prospects. It is no accident has recently seen a significant surge of interest in him. Modern technology allows the making of magnelita almost anything: wall materials, structural beams, penomagnelitovye blocks with a brick veneer facade or crushed stone, a variety of floor coverings, interior details. It should be noted that in the homes of magnelitovyh design creates a favorable microclimate for the person that combines the advantages of a wooden house and the salt caves that have a spa effect in patients with asthma and other allergic diseases. Most of the obstacles to mass use magnelita as a building material has already been overcome. Along with the existing enterprise producing magnesia raw materials are explored and prepared for production of a number of new deposits of magnesite in the Urals and Eastern Siberia, is the industrial extraction of bischofite borehole method. Bischofite is unique in its composition, eco-friendly mineral - water magnesium chloride MgCl2 • 6H2O and is a product of crystallization of salts of closed water basins. First identified in the Zechstein deposits in Germany by a German scientist Gustav Bischoff, after which time the mineral was also named. Developed and operated a pilot-industrial kilns fluidized bed units, allowing to obtain low-cost magnesite cement from the most common raw magnesite - dolomite. However, for the widespread introduction of a magnesia binder in building practice today need to solve some of the federal scale: from the development of state standards and building codes relating to magnesite cement and building materials based on it - before the organization of production and processing of magnesite raw materials in industrial quantities.