The paper proposes a new foam based on cement and the steelmaking slag, which is obtained and developed at the Department of construction materials and special technologies, IAIS VSTU. The purpose of the survey was to obtain an effective insulating material for wall building envelopes, in high-rise housing construction and of the material for use in low-rise construction in the manufacture, which would maximize the use of local raw and production resources. When selecting components, special attention was paid to the resource base of existing enterprises of Volgograd, analyse the products of local manufacturers. The tests were conducted in the laboratory and on the production line. It is known that the slag used in the production of building materials rarely, usually just transported to dumps by truck. At the plants, open hearth plants, slag with shlakovoza buckets are taken and poured as a melt into slag pits. Use water spraying for crushing slag due to thermal shock when the temperature drops.

Keywords: foam, electric furnace slags, heat insulation material, building energy efficiency, building materials

This article discusses the use of recycled polypropylene in the creation of polymer-bituminous binding mix, the use of which in the manufacture of asphalt concrete mixtures will improve the physico-mechanical properties of asphalt concrete and increase the warranty period of the pavement.

Keywords: secondary polypropylene, bitumen, polymer-bitumen binder, asphalt pavement, industrial oil, plasticizer, recycling, physico-mechanical properties, penetration, softening temperature

The article is devoted to the results of studies of the initial modulus of elasticity of tuffs on natural porous aggregates of Kabardino-Balkaria, with compensated shrinkage with prepared additives, both in quartz and tuff sands. The article presents the results of experiments on determining the initial modulus of elasticity of tuffs of different preparation formulas. The values ​​of the correction coefficients in the well-known formula for the dependence of the initial modulus of elasticity of lightweight concrete on its cubic strength and the volume weight of dry concrete, depending on the formulation of tuffs are proposed.

Keywords: Modulus of elasticity, tuffs, light concretes, porous aggregates, tuff, tuff sands, compensated shrinkage

the paper presents the analysis of volumes of waste wood processing industries in the form of sawdust and considers modern directions of their use. It justifies the rationality of production of fibreboard by using a semifinished product obtained from sawdust. The mathematical description of the process of production of wood-fiber plates with the addition of a semifinished product obtained from sawdust as the total weight, thus establishing the quantitative relationship of studied process parameters physico-mechanical parameters of the finished plate.

Keywords: Zyryanov M.A., Aksenov N.V.

Abstract. In the article it is proposed to use flexible surface heating elements Tami in various sectors of the economy: when you heat various materials and products, the heating of concrete in winter time, the heat treatment of the roof during its repair, and disinfection of the soil in greenhouses and greenhouses. Optimal and cost-effective modes of application of Tamou. Shows practical applications of the heating elements. The most effective use of the heating elements when they are combined with different methods or materials for a particular use.

Keywords: Key words Flexible surface heating elements, heated various materials, concrete heating, heat treatment of roofs, disinfection of the soil

Are given the results of studies on the creation of samouplotnyayushchikhsya fine-grained fibrobetonov on the withdrawals of lithotrity with the application of a polyfunctional additive D -5. Are developed the compositions of samouplotnyayushchikhsya fine-grained fibrobetonov with the application of a basaltic fibre, which make it possible to considerably decrease the expenditure of cement and to improve the characteristics of fine-grained concrete mixture and concrete. The use of a polyfunctional additive D -5 in the mixtures makes it possible to increase the strength properties of fine-grained fibrobetonov with a simultaneous improvement in the rheological characteristics of concrete mixtures. The replacement of cement to 10 % from the mass by ashes of fraction d0,14 mm in the fine-grained concrete mixtures does not cause noticeable reduction in the strength properties of concrete. Developed samouplotnyayushchiesya fine-grained fibrobetony possess the increased strength properties and have low prime cost due to the use of local raw material and withdrawals of lithotrity

Keywords: cement, the withdrawals of lithotrity, ashes, polyfunctional additive D -5, basaltic fiber, samouplotnyayushchiysya fine-grained fibrobeton, strength for the bend and the compression, the mobility of mixture, the plan of the experiment

This paper describes the main directions of development of low-power boilers and the analysis of existing methods of heat transfer enhancement in these boilers. Shows generalising dependence reliably reflecting the impact of intermediate emitters on heat transfer in convection surfaces of water-tube boilers. The use of intermediate emitters can improve the energy efficiency of low-power boilers and reduce their negative impact on the environment

Keywords: low power boilers, energy, convective heating surfaces, intensification of radiant heat transfer, intermediate emitters

The article describes a partial solution to the problem of disposing of waste plastic as their use in the manufacture of fiberglass reinforcement. The comparison of the calculation of the foundation slab reinforcement using the class A-500S and fiberglass reinforcement with a thickness of 300 mm plate. From calculations that by recycling the plastic in the manufacture of fiberglass reinforcement observed economic benefits for the producer (cost of fiberglass reinforcement with the same thickness of the foundation plate 3 times less than steel), as well as environmental benefit for the planet, as this will help reduce the amount of plastic waste without recycling.

Keywords: plastic, recycling, waste fiberglass rebar, reinforced concrete structure, the foundation

are given the results of studies of the fibropenogipsobetonnykh composites with the application of pumice. Are developed the compositions of gipsotsementoputstsolanovogo composite with the application of pumice, which make it possible to substantially reduce the expenditure of gypsum and to improve the characteristics of gypsum concrete. Is revealed the effect of foaming agent PB-2000 on the periods of gripping gypsum test. Are obtained the penogipsobetonnye composites on the basis of the gipsotsementoputstsolanovogo binding and synthetic foaming agent PB-2000. The developed compositions of the fibropenogipsobetonnykh composites with the application of pumice make it possible to reduce the expenditure of gypsum per 50 % with a simultaneous improvement in the physicomechanical properties of initial foam gypsum and a reduction in the prime cost of material due to the use of the local raw material

Keywords: gypsum, portland cement, ashes, foaming agent PB-2000, basaltic fiber, gipsotsementoputstsolanovyy composite, the periods of gripping gypsum test, penogipsobeton, the fibropenogipsobetonnyy composite, strength for the bend and the compression, the average

"Effective and affordable sorbents produced from natural organic raw materials and waste products of agricultural and livestock origin, because these sorbents are part of existing ecosystems and, therefore, best meet environmental requirements, in order to ensure the rational nature management and preservation of consumer properties of water resources. For the solution of actual problems, such as the removal of oil and oil products from water surface, as sorbents was investigated by the waste processing of leather and agricultural industries: wool (sheep and goat) and feather (chicken and waterfowl). It is established that application of organic and mineral acids at certain concentrations , for treatment of wastes from the processing of wool allows to obtain sorbents directional spectrum for removal of oil products (such as diesel gas oil and engine oil) and oil from water. The modifiers of wool and feathers obtained after the chemical treatment, was used to study the sorption of oil and oil products from water surface. It was determined by sorption characteristics of the modified sorbents, such as oil capacity and moisture absorption. The kinetics of sorption–desorption of oil, which showed that the greatest degree of absorption is observed for the first 10-15 minutes. It is found that wastes from goat and sheep wool have a 90% holding capacity that persists in time. It was revealed the effect of temperature on oil absorption capacity of the sorbent and the calculation of heat of adsorption. The temperature increase leads to a reduction of the capacity of emulsified oil, reducing the degree of purification by 15-30%."

Keywords: sorbent of oil, wool, feathers, oil, oil products, chemical modification of the sorbent, oil capacity, moisture absorption, heat of adsorption

The article presents the quality assessment of repair work for electricity pilons of transmission line performed by the method of vibration diagnostics. The suggested criterion for assessing the quality of the repair is relative adhesion of repair layers to the base of the stand. Modeling of structural oscillations strut mount, transmission lines and calculations in the finite-element complex Ansys. The dependence of the parameters own frequency of fluctuations of the value of damage at different values of the space adhesion. The resulting equations based on changes in natural frequencies on the magnitude of adhesion. The calculation of the relative adhesion of the repair composition to the concrete model of the design. The material presented can be used for assessing the quality of repair work of different structures of the core type reinforced concrete structures.

Keywords: vibration diagnostics, quality, repair of structures, defect, adhesion, natural frequencies

The article deals with the effect of force compression of cement stone on the magnitude of mass loss in differential thermal analysis. Theoretical aspects concerning the issues of qualitative change in the state of the liquid phase in a cement stone under load are discussed. Changes in adsorption and chemically bound water were studied by varying the water-cement ratio, the sample size, and the type of cement used. The value of the applied load was taken as the experiment constant.The data obtained show an increase in the total mass loss in compressed samples in 87% of the experiments. This fact may indicate a qualitative change in the form of water bonds in the structure, as well as take into account the influence of the factors under consideration on this process.

Keywords: Cement stone, compressive stresses, early loading, adsorption-bound water, chemically bound water, mass loss, differential-thermal analysis, water-cement ratio, sample size, alumina cement, Portland cement

The paper describes influence of content of dispersed polymer fiber on mechanical properties of mortar on basis of geopolymer binder. The studies were carried out on a geopolymer binder based on crushed granite and ground-granulated blast-furnace slag . Polypropylene fiber with length of 6 mm at a dosage of 0.22, 0.44 and 0.66% by volume was used as a reinforcing fiber. Dependencies were established for the compressive strength, flexural strength, fracture energy, and density from the dosage of the fiber at various times of hardening. It was established that fiber increases flexural strength and tensile strength of geopolymer mortar. It was shown that investigated fiber is characterized by high resistance to alkaline environment of the geopolymeric stone

Keywords: geopolymer, polypropylene fiber, dispersed reinforcement, compressive strength, flexural strength, tensile strength, resistance in alkaline environment

Strength properties of high-strength concrete on the basis of a mixture of high-calcium ash and cement crushed to a specific surface of 600 m2 / kg in the presence of a superplasticizer were investigated. It was established that at the initial stages of hardening of the binder, its strength strongly depends on the dosage of fly ash and it depends little on the water/binder ratio. After 28 days of hardening, the strength of concrete, depends more on the water-binder ratio, rather than on the ash content of the cement-ash binder. There was concluded that minerals of fly ash affect on strength of the cement-ash binder in later periods, and at the initial stages, its hardening is provided by hydration of the cement clinker. It was established that in high-strength concretes was no decrease in strength in later periods when using finely grinding ash containing a significant amount of free CaO.

Keywords: high-strength concrete, fly ash, free CaO, cement-ash binder, strength, dump strength

Cement is the main building material, which is an inorganic artificial binder. The popularity of cement is due to its properties, which are unique to it, namely: cement is gaining strength even in wet conditions. The most common cement is concrete cement. From the water-cement ratio of concrete mix depends first of all the strength of hardened concrete. The theoretical aspect of the issue of dependence of the water-cement ratio on strength is considered in the article. A number of experiments were performed, taking into account the experience of other researchers with the aim of determining the reliability of data, obtained earlier. The results obtained during the experiment confirmed that the increase in water-cement leads to a decrease in the strength of the cement stone.

Keywords: cement, water, water-cement ratio, active cement, concrete, sand, strength, compression, dispersion composition, Portland cement

The use of by-products of the coal industry in the manufacture of wall ceramic product is quite relevant. Coal waste are promising raw materials for the production of ceramic wall materials. Coal slurries in the production of clay brick is widely used in the factories of the Urals and Kazakhstan. The most developed technology for the use of waste coal as an additive in the manufacture of ceramic products. The use of local waste allows to minimize raw material costs

Keywords: manufacturing, raw materials, industrial waste, technology, coal preparation, supplements.

This article discusses the possibility of using liquid ceramic insulation on oil production facilities, the urgency of innovation and application of new technologies in companies producing oil. Considered positive qualities of the material and to obtain additional benefits when used. Also in this material are considered distinctive liquid ceramic insulation and traditional insulation. Describes basic material properties and composition. Presents the basic buildings in the construction of which it is expedient to use this type of insulation coatings. A comparative analysis of the cost of the use of this type of insulation. Analysis showed that its use reduces the cost of these types of operations twice. The analysis concluded that by applying a liquid-ceramic coating may substantially reduce the cost of this type of work, as well as improving the quality and reducing the duration of work, as well as decrease the cost of delivering materials.

Keywords: liquid ceramic insulation, innovation, oil production facilities, insulation, oil pipeline, protective coating, saving, insulation coating, field construction

The results of studies on the development of solution mixtures on the withdrawals of lithotrity with the application of pumice and additive D, are represented. Are proposed the compositions of mortars, which make it possible to substantially reduce the expenditure of portland cement and to simultaneously improve the physicomechanical properties of solution mixtures and solution. The application of a multifunctional additive D -5 in the mixtures makes it possible to increase the strength properties of solution with a simultaneous improvement in the rheological properties of solution mixtures. The replacement of cement to 20 % from the mass by pumice of fraction d0,14 mm in the solution mixtures does not cause noticeable reduction in the strength properties of solution. The developed solution mixtures correspond to requirements ALL-UNION STATE STAN. 28013–98 and have low prime cost due to the use of local raw material and withdrawals of lithotrity

Keywords: portland cement, the withdrawals of lithotrity, pumice, additive D -5, transverse strength and compression, the mobility of mixture, exfoliation property, the water-holding ability

The article provides analysis of modern methods of struggle with the rut in road clothes with asphalt. Increasing the resistance of asphalt concrete pavements to rutting can be done in two ways: by calculation and improve the composition of the asphalt concrete. Development of methodology for calculation of road constructions on the resistance to rutting will allow us to take the design of pavements resistant to rutting and develop strategies for maintenance activities. Material science solutions to optimize the properties of the asphalt are to improve the properties of binders, use of modifiers, the use of asphalt concrete that is resistant to rutting, such as stone mastic asphalt and polymer-dispersed-reinforced asphalt concrete.

Keywords: road construction, rutting, asphalt pavement, polymer-bitumen binder, the composition of the asphalt concrete, stone mastic asphalt, polymer-dispersed-reinforced asphalt concrete, methods of forecasting rutting

The statistics of accidents is given in the oil industry. It is shown that the considerable share of accidents in the oil industry is connected with oil transportation and is followed by its spills. Among the known methods of elimination of oil spills application of various types the floating booms in combination with use of new materials and technologies remains to the most perspective and ecologically safe. The floating booms serve for the prevention of distribution of oil on the water area, for simplification of its removal from a surface of the water, and also for utilization of oil on a water surface. In case of fire the oil spill occurs retention it within the boom. The features of the application, relevant structures and elements of floating booms, ways to improve them as the primary means of oil spill response, the effectiveness of the floating booms are considered.

Keywords: oil facilities, accident statistics, water area, emergency oil spill, oil spill response, floating boom, sorbing boom, fire-resistant boom, boom operation efficiency.

This paper summarizes the study and analysis of numerous published sources, the results of experimental work to identify the species composition of microorganisms dispersed rocks, the nature and extent of their participation in corrosion process of construction of engineering structures. Experimentally established species composition of microflora of dispersed rocks the Rostov-on-Don city, lists the most active species capable of damaging protective coatings and metal. Are briefly characterized some of the mechanisms of interaction of the products of microbial activity with building materials that lead to corrosion. Identified species has the ability to destroy the materials containing organic derivatives. Indicated lithological varieties of dispersed rocks within which biocorrosion can proceed more intensively.

Keywords: corrosion, micro-organisms, disperse rocks, engineering constructions, metal structures, bacteria, actinomycetes, micromycetes.

The article presents the results of experimental studies of changes in the physico-mechanical and operational performance, polymer-dispersion-reinforced asphalt mixtures depending on the temperature of the mineral material and the time of mixing the components in the preparation of the material in the coating plant

Keywords: asphalt concrete, stone mastic asphalt concrete mixture, the wear layer, grain structure, sieve, fraction, track, toughness, shear resistance, roughness.

The article presents the main provisions of the work garmonizatsii such European standards as TL Asphalt-StB 07 and the Finnish standards on asphalt PANKry with the requirements of the RF regulatory framework and given the developed compositions of asphalt mixtures, SMA-11 and their physico-mechanical characteristics.

Keywords: asphalt concrete, stone mastic asphalt concrete mixture, the wear layer, grain structure, sieve, fraction, track, toughness, shear resistance, roughness

In the work conducted studies to determine the compatibility of the developed composition of the ceramic mass with engobe and glaze. Specified temperature coefficient of linear expansion of these layers. Presents dilatometric tests of the developed formulations. Identifies the main physical and mechanical properties of facing ceramic tiles: moisture expansion, temperature resistance and permeability. Conducted optical-flexotecnica studies of the individual layers. Identify the causes a more uniform stress distribution of decorative layers. The structure designed ceramic tiles with the help of electron microscopic studies

Keywords: ceramic mass, the engobe, glaze, temperature coefficient of linear expansion, dilatometry, pleximetry, electron microscopy, moisture expansion, temperature resistance, permeability.

In accordance with the theory of mathematical and statistical modeling, evaluation studies, selected the main characteristics of the models describing the studied production process of fiberboard using different types of binders. In accordance with the developed plan of the selected controlled studies, uncontrolled and controlled factors of the process under study. The levels, steps, and intervals of variation of the studied factors. As a method of obtaining the mathematical dependencies of the quality indicators of fibreboard from the kind of used binder was enacted active single-factor experiment. The results of the studies conducted statistical analysis of the dependence of physical-mechanical characteristics of the performance of the finished plate thickness fibreboard manufactured by wet and dry methods, interpretation of research results, quantitative and qualitative relationships between the studied parameters.

Keywords: strength, water absorption resin, fiberboard, thickness, experiment planning, mathematical model