bluuebunny/crossref_metadata_2025_split huggingface dataset:
Determination of optimal technological parameters for the manufacture of small architectural forms of gypsum by dyeing in bulk based on an analysis of consumer preferences
Authors: Erofeev A V , Mikhaylov V A 
Published: November 2020

Abstract
The paper describes the technology of manufacturing small architectural forms of gypsum. The required appearance (color) is achieved by coloring the product in bulk (adding color to the water, which is mixed with gypsum). The appearance of the products with different percentages of color in water is given. The method of expert evaluation revealed consumer preferences. Studies were conducted for three colors (red, blue, violet). The preferred tonality when dyed in bulk is the tonality obtained by adding 50% tint, and less preferred when adding 10%. The results of the study in three batches of samples showed that this consistent pattern does not depend on color. There is a consumer need for a wide range of tonalities within a single color scheme.
Modified heat-resistant concrete using slag aggregates
Authors: Burkhanova R A , Akchurin T K , Stefanenko I V 
Published: November 2020

Abstract
The article investigates the sorption properties of modified heat-resistant concrete based on liquid glass and slag aggregates produced at Volzhsky Pipe Plant through the BET method. For the purpose of comparative analysis, the specific features of the changes in the sorption properties of heat-resistant Portland cement concrete and aluminous cement concrete as well as of ordinary concrete resulted from high-temperature heating have been determined. The adsorption isotherms of heat-resistant and ordinary concretes have been obtained. The data on the changes in concrete specific surface area due to an increase in the heating temperature and elongated duration of the exposure to high temperatures have been found. The authors have also revealed the changes in the structure and the properties of the materials under investigation depending on the type, composition and hygroscopic behavior of the components included.
Transformation of non-firing technology issues for construction composite production from particulates using phosphogypsum
Authors: Kukina O B , Volkov V V , Volokitina O A 
Published: November 2020

Abstract
This paper presents the research results of the structure formation process of construction composites with the simultaneous extraction of a non-radioactive rare-earth metals concentrate in a non-fired technological process from a chemical production waste, phosphogypsum, which is being accumulated in dumps for years and causing damage to the environment. The article provides the results of the initial material studies by the X-ray fluorescence method, differential thermal calorimetry, and spectrometry on such aspects as radioactivity, chemical composition, dehydration energy. A flow chart of the energy-saving non-firing technology for the direct production of wall materials with a simultaneous extraction of the rare-earth metal concentrate from phosphogypsum is presented. When leaching the phosphogypsum, the concentrate, containing non-radioactive rare-earth metals, was obtained. It has been shown that phosphogypsum can be used as a construction material without restrictions on radioactivity. Laboratory research and verified technology proved the phosphogypsum exhibits astringent properties that provide the production of wall materials by non-firing method with the simultaneous extraction of the rare-earth metal concentrate. The developed technology makes it possible to separate strategically important rare-earth metals from the phosphogypsum while reducing the cost of production of wall materials by 2 … 3 times.
Basalts of the Republic of Buryatia and their suitability for obtaining mineral fibres
Authors: Khudyakova L I , Buyantuev S L , Buyantuev V T 
Published: November 2020

Abstract
Mineral wool is one of the most effective and environmentally safe types of heat insulation materials. Basalt is the main raw material for its production. The quality of the fibre produced depends on its chemical composition. The priority task is to assess the suitability of basalts for use in the production by their chemical composition. The main indicator is the acidity index, which reflects the acid-base characteristics of rocks. Basalt deposits of the Republic of Buryatia have been studied. It was found that the basalts of the Ilyushkin Klyuch deposit have a chemical composition which meets the requirements for continuous fibre production, and the basalts of the Selendum and Mukhor-Talinsky deposits – for staple fibre production. The production of continuous fibres for basalts of the Selendum deposit requires additional charging of calcium-or magnesium-containing rocks, and for basalts of Mukhor-Talinsky deposit-an addition of silicon-containing rocks.
Contemporary methods for production of Prussian blue
Authors: Vyboishchik A V , Popov M Yu 
Published: November 2020

AbstractPrussian blue, a blue-coloured pigment, has found a wide application in various branches of production, including such industries as construction and transport, where Prussian blue is applied as a coloured coating, and also in agriculture and medicine. A typical technological process for production of Prussian blue includes nucleation, enlargement of formed crystals, aggregation of formed crystals, and, finally, recrystallization followed by further oxidation, rinsing of impurities and drying. A typical technological process for production of Prussian blue is observed, its features are studied, and the influence of chemical components on the properties of the obtained pigment are examined. Recommendations on the mole ratio and concentrating of chemical components are given. The pigment produced by the given recommendations is superior in quality to foreign counterparts.
Filtration materials of natural origin
Authors: Strelkov A K , Bykova P G , Gridneva M A 
Published: November 2020

Abstract
The research reveals test results of physical and mechanical properties of filtration materials of natural origin (that is of crushed expanded-clay aggregate with 525 and 555 kg/m3 bulk density and “Diamix AQUA” with 670 kg/m3 bulk density). The raw materials for the production of expanded-clay aggregate are easily expansive clays containing such oxides as SiO2 (up to 60 %), Al2O3 (up to 20 %), Fe2O3 (from 4 to 20 %). “Diamix AQUA” is a material obtained on the basis of natural diatomite which contains exoskeletons of diatoms. The content of oxides in “Diamix AQUA” is as follows: SiO2 – no less than 83%, Al2O3 – no more than 6%, Fe2O3 – no more than 3.5 %. There are certificates of state registration for both types of filtration materials. The research results of the new filtration material “Diamix AQUA” used as a filter bed showed its acceptable physical and mechanical properties. “Diamix AQUA” regenerating requires an increased wash-water rate. Such filter media can be applied to newly constructed filtration facilities. When using “Diamix AQUA” in existing filter beds, it is necessary to check the capacity of the drainage and distribution system.
Experimental substantiation by choosing basic variant of plates with cylindrical dowels
Authors: Isupov S A 
Published: November 2020

Abstract
The article is devoted to the experimental substantiation of the choice of the basic version of plates with cylindrical dowels for joints of wooden structures-pusher plates of the TsNIISK-KirPI system. The actuality of the study is due to the lack of experimental data on the bearing capacity and stiffness of the joints regarding various types of dowel plates used for joining (increasing of cross section) of wooden elements working according to an asymmetric pattern. The purpose of this article is to determine the bearing capacity and stiffness of such joints on various types of nail plates and, based on the analysis of experimental data from short-term tests, to justify the choice of the basic version of TGk type dowel plates.
Finite element modelling reinforced concrete beam in transverse bending zone
Authors: Filatov V B 
Published: November 2020

Abstract
The article presents methods and results of studying the stress-strain state of a reinforced concrete beam in its area of transverse bending, using the finite element models. The advantage of the finite element modelling method is relative simplicity of mechanical and physical interpretation of the finite element models. Herein, we present a description of finite element model and the method for numerical investigation during its loading and evaluation of the stress-strain state. Testing of the finite element models were performed using different lengths of shear span, taking into account the inelastic properties of concrete. During the models’ tests, the process of cracks formation and development was studied while taking into account the bond of reinforcement to concrete, which changes in line with the adopted law. We also evaluated the parameters of stress-strain state of the beam blocks separated by cracks and the stressed state of concrete at the tip of an inclined crack, depending on the loading level. Based on the results of numerical experiment, we obtained distribution patterns of principal stresses for the concrete and those of shear stresses along the reinforcement and concrete contact surface, depending on the level of loading, the degree of bond failure and the length of shear span.
The use of damping devices to increase the seismic resistance of frame buildings
Authors: Belash T A , Belashov M S 
Published: November 2020

Abstract
Frame system is one of the most common types of systems in the construction and design of buildings and structures due to their •flexibility• in the choice of design solutions, which, as a result, allows you to use this system in buildings and structures for various purposes, and in different natural and climatic conditions, including in conditions of high seismic activity. However, the analysis of consequences of strong earthquakes showed that many of the frame buildings during seismic effects get serious damage caused by the destruction of their joint connections, and as a consequence, instability of the frame to seismic shocks, therefore, the issues of reliability and safety of operation of buildings are important for their functioning. One of the ways to increase seismic resistance is the use of various means of seismic protection, including earthquake extinguishing devices in the form of dampers, which are widely distributed in the world. However, their application in the domestic practice of earthquake-resistant construction is limited. The article presents an overview of damping devices and conducted a computational study of the effectiveness of traditional and non-traditional solutions in the form of dampers in frame multi-storey buildings to increase their seismic resistance.
Treatment of multi freedom constraints in geometrically nonlinear stability analysis of truss structures using penalty function method
Authors: Quyen Vu Thi Bich , Tien Dao Ngoc , Dat Pham Van 
Published: November 2020

Abstract
This paper focus on the treating the multi freedom constraints in geometrically nonlinear buckling and post buckling analysis of truss structure using finite element method. The solution of geometrically nonlinear buckling problem of truss structure having multi freedom constraints is required to incorporate the boundary constraints to the nonlinear master stiffness equation. This work proposes approach to impose the multi freedom constraints and construct stiffness equation for solving the nonlinear buckling problems of truss structures using Penalty function method. The nonlinear balanced equations for buckling analysis of truss structures are developed by minimization of the augmented potential energy function of system by incorporating the multi freedom constraints and changing the constrained problem to the non-constrained problem using Penalty objective function. Using the arc length method, this research proposes the incremental-iterative algorithm for solving the nonlinear balanced equations. Based on proposed algorithm, the calculation program for determining equilibrium paths is written. The numerical test results show the efficiency of proposed method in analysing buckling and post buckling behaviour of truss structures.
Organization of construction in the aspect of strategic development programs for the construction industry
Authors: Peshkov V V 
Published: November 2020

AbstractThe construction complex is a multi-industry production and economic system, the level of economic and production and technical potential of which determines the conditions and state of progressive and effective development of not only the construction complex, but also the national economy as a whole. The complexity of internal technological and intersectoral relations of the construction complex turns it into a multi-criteria object of forecasting. Construction as a component of the investment and construction complex has a special role in the structural restructuring of the material base of the production potential of the regional economic complex. Given this, it is relevant to evaluate the performance and indicators of the construction complex over time, which will allow you to identify the main trends and determine the overall level of development of the country’s construction complex.
Digital technology in the construction of Norwegian house
Authors: Maizel I G , Maizel I V , Platonov V V 
Published: November 2020

Abstract
This work shows the development and implementation of digital technology in the production of wooden houses using the “Norwegian carriage”. The methodology of all stages from designing a house, developing control programs and manufacturing a house with minimal human participation is considered. This approach can significantly reduce the human factor and increase productivity and quality of products. The equipment designed and manufactured for the implementation of this technology is described. The results of experimental processing and assembly of house elements according to the “Norwegian technology” are shown. The cutting modes were worked out and a tool was selected to obtain a high-quality surface.
Recommendations accounting for anisotropy in the calculation of soil bases
Authors: Korobova O A , Maksimenko L A 
Published: November 2020

Abstract
The article contains recommendations prepared for “SP 22.13330.2016” foundations of buildings and structures”, where it is proposed to apply and take into account the deformation anisotropy in the calculations of ground bases. Consideration of deformation anisotropy is possible if there are reliable methods for predicting the stress-strain state (VAT) of soil bases. The existing calculation methods are based on the application of linear deformable medium theories. Over time, it becomes clear that the main provisions of the linear elasticity theory you can use it to describe underground areas, but with large adjustments, which leads to the development of new computational methods that take into account the deformation anisotropy.
The nature of the dynamic stress field formation around the underground hydraulic mine workings
Authors: Yatimov U A , Yatimov A J , Yatimov E A 
Published: November 2020

Abstract
The article discusses the features of the formation of a dynamic stress field and manifestations of rock pressure around hydraulic tunnels. The results of the calculation of the dynamic stresses in the rock mass of the surrounding hydraulic tunnels, the turbine hall, the transformer room of the Rogun HPP are presented. Analytical studies are confirmed by data obtained as a result of observations of the behavior of workings under dynamic loads in production conditions at the construction of hydroelectric power plants. The influence of blasting operations on the development according to the form adopted in hydraulic engineering was also considered. Based on the studies carried out in the chamber sections of the turbine hall and the transformer room of the Rogun HPP, it was found that the maximum and minimum principal stresses σ1
Λσ3 are horizontal, while the stress σ1
in direction coincides with the longitudinal axis of the turbine hall, and σ3
with its transverse axis the average principal stress σ2
is vertical.
Algorithms of generating cuspidal edges of developable surfaces
Authors: Kovaleva N V , Fedorova A V , Pashyan D A 
Published: November 2020

Abstract
Ruled surfaces (torses) are widely used when designing surfaces of machine parts, architectural projects, building structures, plow-bottom surfaces, etc. A ruled surface is generated by moving a straight line continuously in a straight line space in predetermined manner. Otherwise, a ruled surface is a one-parameter set of lines. Ruled surfaces are handy for practical application, since they can be manufactured from rectilinear elements widely provided by modern industry. All ruled surfaces are in divided into two types: developable and nondevelopable. Torses can be superposed on a plane by means of flexural deformation without strain and compression. This property of developable surfaces makes possible to easily produce them from flat materials. It is common knowledge that a torse is a surface which represents a set of lines being in contact with a given spatial line. A line which is tangent to all generatrices is called a cuspidal edge of the given developable surface. Thus, creation of spatial lines is a main point in designing developable surfaces. The article deals with algorithms of generating spatial lines by means of rolling machines for cylinders, cones and generalized torses that can be used hereafter as cuspidal edges when designing developable surfaces.
Factory towns of the Urals. The uniqueness of the planning structures of these towns
Authors: Sidorenko M Yu , Ponomareva Zh V 
Published: November 2020

Abstract
The Urals is rich in raw materials, forests, lakes, rivers, peculiar terrain allowing one to build dams, where factories were formed in the 18th century. A qualitatively new approach to the formation of enterprises based on the use of natural resources was given by the uniqueness of the architectural and planning structure of master plans and architectural treatment, which allowed factories to develop into factory towns. Factory towns currently operate and can develop in the future. The availability of the unique historically developed environment of enterprises and factory environment and the presence of the most valuable monuments of industrial architecture on their territory reveal the major potential for the consistent development and establishment of new functional capabilities of such factory towns. Old factory sites can become resource territories of a town with a further reorientation to new functions since production facilities are valuable as territories equipped with energy and transport communications. This allows one to use them in the future to create centers of innovative technologies, a base for scientists, educational and industrial complexes, cultural centers with the formation of industrial architecture museums and the development of metallurgical technologies, industrial parks, logistics, exhibition and shopping centers, to adapt them for municipal sports and entertainment facilities.
Creating a brand character for making animations in 3D graphics editor
Authors: Kolesova A 
Published: November 2020

Abstract
The article focuses on the stages of designing a 3D brand character, algorithms for practical usage. It also reveals the necessity of using a character as an element of a corporate style. The author analyses the significance of using a 3D character in advertising for brand promotion. The article also summarizes the basics of working in Autodesk 3Ds Max and presents the definition of a 3D model, spline, characteristics of Edge, Border, Polygon, Element and Vertices, renderers, animation. The author demonstrates how to use a polygon and spline methods as well as animation method with Bones. The paper dwells on creating primitives, splines, materials and light sources. The author also suggests an example and step-by-step instruction starting from a sketch and finishing with a scene visualization with a character. The results can be used by graphic designers who face the task of creating a 3D character.
State assessment of urban environment taking into account the development of engineering systems
Authors: Bakaeva N V , Novikova T M , Kuznetcova T L 
Published: November 2020

Abstract
In conditions of urban environment land resources have special importance as a valuable natural resource. This happens in our country in conditions of market economy development and formation. Cadastral and economic valuation of urban land is a part of inventory and urban planning policy. This research is based on the principle of market value, when the amount of land fees depends on the advantage of city position in the territory of the Russian Federation economic district and cadastral quarter on the plan of the city and the level of engineering systems development. The object of the research is Kursk. It is a regional center of Central Black Soil Region. The level of engineering systems development is an evaluation criterion.
Basic methodical design stages of renovation of municipal industrial development
Authors: Shyshkin E , Viatkin K , Haiko Y 
Published: November 2020

Abstract
The paper concentrates on renovation of industrial territories, particularly topical in the Ukrainian cities. As a result of reduction in production there are large-scale decaying industrial areas with constructions, storage facilities and related infrastructure which stay off stream. Over the past few decades de-industrialization of big cities received wide publicity. In that context the necessity arises to carry out works related to renovation of industrial development, its adaptation to present-day conditions of city functioning and sustainable growth. The paper gives definitions to renovation and industrial and production area. Basic city-planning tasks in enhancement of industrial areas were determined. Outstanding problems, obstacles and motivational instruments when implementing projects related to renovation of industrial areas were studied. On the basis of analysis of global experience and study of central problems, which arise when recovering industrial areas, we have developed methods of renovation of industrial facilities located within the limits of the city.
Arborsculpture theme park
Authors: Smolina O O 
Published: November 2020

Abstract
The high, uncontrolled, pace of urban development in the modern world inevitably leads to a decrease in the quality, representativeness and eco-sustainability of the recreational territories of populated areas. Renovation of the urbanized landscape is required, based on the preservation of the existing natural-territorial complexes of the city and on the principles of increasing the ecological and aesthetic characteristics of the natural-landscape elements of common areas. One of the possible ways to solve this problem can be the organization of systems of recreational and theme parks of the city. Given the prospects for the development of art of arbor sculpture, the theme park, which includes various architectural and art objects from tree and shrub species, would become one of the visited recreational spaces of the city, as well as contribute to the improvement of the ecological situation in the city and laid the foundations of an ecological worldview as an important component of culture human environment. The article discusses the US Arborsculpture Theme Park; Arborsculpture park in Australia, and in China, design features and principles for organizing Arborsculpture theme parks were defined. The results of the study can be applied in the formation of the Arborsculpture theme park in Russia.