SILICA FUME AS A PROMISING ENERGY AND RESOURCE-CONSERVATING MATERIAL FOR CONSTRUCTION

Utilization of silica fume is extensive in the construction industry of Europe and America through its incorporation into concretes of a new generation. The Siberian State University of Industry, in conjunction with the Moscow State University of Construction and the NIIZhb, have developed the composition and technology for fine cementless composite concrete on the basis of high-calcium ash from thermal power plants and silica fume from the Kuznetsk ferroalloy plant as well as the compositions and technology of superfireproof concrete from secondary mineral resources for lining thermal units where a technical water glass was used as a binder. The latter was obtained by the method of its direct dissolution with alkali (caustic soda). In 2003, the installation for the pneumatic condensation of the silica fume was erected at the “Kuznetsk Ferroalloys” company on a contract with the “MicroPul”, France. Silica fume is a certified marketable product. The fireproof compacted silica fume is produced at the “Kuznetsk Ferroalloys” in accordance with the specifications 14-142-17-01 “Fireproof condensed silica fume”. According to the specifications, three types of silica fume are produced: incondensed, condensed, in the form of suspension. Putting into operation of the installation for condensing silica fume in Novokuznetsk opens up the perspective of its use in Kuzbass for the manufacture of fireproof concretes and masses, for lining thermal units, in road construction, in the production of watertight and frostresisting articles, in the organization of the output of cementless binders and concretes (including Khakassia). It also gives the possibility of supplying silica fume to the nearest consumers and to the consumers concerned in Siberia and Russia.

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