Time filter

Source Type

Shemanin V.G.,Kuban State University | Atkarskaya A.B.,Belgorod State Technological University
Technical Physics | Year: 2014

The influence of the aging period (duration) and the aging-related rheological characteristics of film-forming solutions (sols) on the refractive index and thickness of coatings, light reflection and light transmission coefficients, and optical losses in glass substrate-nanodimensional oxide (CuO-TiO2) composites is considered. It has been shown that the increase in the CuO concentration in the coating and the extension of the sol aging period favor crystallization and change the form of inclusions in the coating from pseudospherical to dendritic with a different degree of branching. The refractive index of the film and its related coefficient of mirror reflection of the composite are functions of the density of packing sol disperse-phase particles into a nanodimensional layer. The packing density of dendritic particles drops decreases with the degree of their branching and transverse size of fragments. In every case, an optimal sol aging period should be found to obtain glass composites with nanodimensional coatings offering desired optical properties. © 2014, Pleiades Publishing, Ltd.

Doroganov V.A.,Belgorod State Technological University
Refractories and Industrial Ceramics | Year: 2012

Aspects of the modification of refractory concretes with different grades of Ludox nanosilica are discussed. It was established that the addition of nanosilica TMA to the binder in amounts no greater than 25% of the binder's weight increases the strength of medium-cement concretes and alleviates their softening. The grade of nanosilica that is optimum for super-low-cement concretes is AS-40. © 2012 Springer Science+Business Media, Inc.

Romanovich A.A.,Belgorod State Technological University
ARPN Journal of Engineering and Applied Sciences | Year: 2014

The importance of energy-savings in grinding of materials in a cement factory using press-rolling crusher and grinding mill was considered. An analysis of the development of grinding equipment on the basis of grinding mill in the past half century has been presented. Comparative characteristics of existing grinding units are also presented. Established that the vast reserves of energy saving during grinding contain materials having anisotropic texture and is widely used in the manufacture of building materials, including cement, which have different ultimate resistance in directions perpendicular and parallel to the layering of the mineral. The recommended of development and retrofit of the grinding equipment to grind anisotropic materials, which include: • to the uniform and ingress direction of mill feed across the width of the working surfaces of the rolls; • force strength action in the direction of the strength of minimal pieces of anisotropic material; • effective conditions deagglomeration and grinding mill the compacted pressure press-rolling crusher of materials; • realization of effective constructively- technological solutions structural and technological solutions that enhance the wear resistance of working surfaces and other aggregates. Suggested areas of development and improvement of engineering and technology development grinding materials may be of interest to Russian and foreign organizations operating in the design and manufacture of the grinding equipment.

Trepalina Yu.N.,Belgorod State Technological University
Refractories and Industrial Ceramics | Year: 2010

The process of manufacturing protective coatings by means of deposition of aqueous suspensions is distinguished by the simplicity of the technological process and the low temperature at which it is realized. Phosphate-containing binders and concretes based on these types of binders increase the resistance of the particular material to corrosive media. Through their use it is possible to increase the service life of refractories. © 2010 Springer Science+Business Media, Inc.

Bel'Maz N.S.,Belgorod State Technological University
Refractories and Industrial Ceramics | Year: 2010

Information is provided for preparing high-alumina ceramic concretes based on a combined silicate-phosphate binder. Features are revealed for structure formation of the ceramic concrete developed during hardening, drying and firing; probable chemical reactions that occur are indicated. © 2010 Springer Science+Business Media, Inc.

Discover hidden collaborations