bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Influence of Wave Resonance Phenomena on the Sound Insulation of a Single-layer Building Partition in the Application of Calculation Models with the Concentrated Parameters
Authors: Zakharov A V , Saltykov I P 
Published: March 2021

Abstract
The article presents calculation formulas for calculating sound insulation before and after the frequency of wave coincidence, obtained through the joint solution of the equations of the momentum conservation law and kinetic energy conservation. The process of occurrence of wave interference phenomena in a construction partition, due to the movement of waves traveling along it and reflected from its anchoring nodes, is described. Formulas for corrections to sound insulation for resonances are given. A formula for finding the reflection coefficient of the oscillation velocity using the basic provisions of the method of concentrated parameters is obtained. A special case of determining the reflection coefficient of the oscillation velocity in a single-layer partition with a cruciform hinge joint in a panel building is considered. Formulas for computation of reflection coefficient of the oscillation velocity are written. As an example, frequency characteristics of two panel inter-apartment walls in buildings of standard series are found. Sound insulation graphs are constructed according to the applied method and the method of the Russian code of rules, and comparison with experimental measurements is provided.
Energy-Saving Regimes Examination During New Generation Building Structures Insolation
Authors: Shchukina T V , Sheps R F , Seryogina Y S 
Published: March 2021

Abstract
The problem of energy saving is extremely important for Russia. It is necessary to study alternative energy sources, as well as to improve devices and methods for ensuring the microclimate of buildings, heat and cold supply. The authors consider the improvement of geothermal heat pumps. The article suggests using geothermal heat pumps to provide not only heat supply to buildings, but also cold supply. Two schemes of operation of a heat pump installation are considered. The first scheme is a combined geothermal heat pump unit with a direct evaporation heat exchanger and cold and hot water supply circuits. The second scheme is a combined geothermal heat pump installation with a direct evaporation heat exchanger and the maintenance of equipment for cold supply, hot water supply and heating. A comparison of various refrigerants is given. Technical and exergic characteristics of vapor compression cycles are considered. It is proved that the efficiency of soil heat utilization processes increases with the expansion of energy supply functions for structures.
Modification of the Material Structure Produced by the Electron-Beam Additive Manufacturing by the Subsequent Friction Stir Processing
Authors: Gusarova A V , Knyazhev E O , Chumaevskii A V , Panfilov A O , Kalashnikova T A , Kalashnikov K N , Osipovich K S 
Published: March 2021

Abstract
The work is devoted to the study of the formation of large blocks from aluminum alloy AA5056 by electron-beam additive technology with subsequent friction stir processing of the material. Conducted studies of the sample structure show that during the processing of additively produced samples there is a refinement of the material grain structure in the stir zone with the removal of defects such as pores and small discontinuities. Large defects of the additively produced material can be eliminated by the friction stir processing only partially, with the formation of defects such as the Lazy “S” or the joint line one in the stir zone.
Mechanical Properties and Deformation Features of Nitrile Butadiene Rubber with Protective Coating from Ultra High-Molecular Weight Polyethylene
Authors: Shadrinov N V , Sokolova M D , Dyakonov A A 
Published: March 2021

Abstract
The influence of the duration of the rubber preliminary vulcanization on the physicomechanical properties, wear resistance and hardness of nitrile butadiene rubber with a thin protective coating from ultra-high molecular weight polyethylene are studied. The optimal duration of the preliminary vulcanization of the rubber providing high adhesive interaction between the rubber and the coating was established. High adhesive interaction leads to an increase in abrasion resistance while maintaining the physical and mechanical properties of the original rubber. Structural rearrangements under uniaxial tension of ultra-high molecular weight polyethylene coated on a rubber surface were visualized using atomic force microscopy. The formation of ordered fibrils on the surface of ultra-high molecular weight polyethylene after 30% elongation is shown.
Retrospective Development of the Central Part of Komsomolsk-on-Amur, Khabarovsk Territory
Authors: Nishchimnykh Iu A , Garnaga A F 
Published: March 2021

Abstract
The strategy for updating the architectural environment of the city, proposed as part of the long-term integrated development program of Komsomolsk-on-Amur, sets the task of renovating public spaces. The need to reorganize the territory of the city center makes the question of studying the history of the development of the area relevant. The article is considered the detailed planning projects for the central part of the city of Komsomolsk-on-Amur in 1970-1980, which were not implemented for a number of reasons. Analysis of archival sources allows us to understand the significance of this territory, assess the potential for its use, and make conclusions about the specifics of possible construction.
Waste-free Processing of a Mammoth Tusk of Various Sorts by 3D Technologies and Polymer Material Science
Authors: Kolesova E S , Markova M A , Chirikov A A , Petrov V V , Petukhova E S 
Published: March 2021

Abstract
The main reasons for the deterioration of the mammoth tusk quality as a raw material are considered and reduce these deteriorations are indicated. Creation of highly filled composite materials based on an epoxy binder for possible use of tusk jewelry processing waste is proposed. Using the 3D modeling technologies and milling equipment with computer numerical control to create a mass production of products from low-grade bone materials and polymer composite materials is proposed.
Technological Soil Mechanics in Underground Construction
Authors: Ilyichev V A , Nikiforova N S , Konnov A V 
Published: March 2021

Abstract
The article is devoted to the application of the technological soil mechanics principles in the design and construction of underground structures, also in problematic soils – loose water-saturated sands. The definition of technological soil mechanics is given. The relevance of the research topic is justified. A quantitative assessment of the stress strain behavior (SSB) of the soil mass containing the support systems of deep pits, depending on the technology and sequence of work during underground construction, was made. The possibility of the SSB of ground mass managing during underground construction in order to select the most economical options for design and technological solutions is proved. Recommendations for SSB management of underground parts of buildings and structures, as well as the surrounding soil mass, based on the technological soil mechanics application are formulated.
Semantic Aspects that Determine the Nature of the Architectural and Planning Decisions of the New Administrative and Business Center of Tyumen
Authors: Ivanova O A 
Published: March 2021

Abstract
The article considers semantic aspects that contribute to the formation of an expressive architectural and planning environment of a new administrative and business center in the city of Tyumen. The analysis of examples of foreign and domestic practice, demonstrating the formation of a new administrative and business center with a certain semantics of the architectural image, reveals the semantic and spatial planning features of administrative and business centers in Berlin, Brussels, Nur-Sultan, and Moscow. The authors identify the reasons, regularities and conditions that determine the semantic content of the image of the architectural environment of new administrative and business centers. Based on the identified patterns, a variant of the semantic framework model of the architectural and planning environment of the new administrative and business center of Tyumen is proposed.
Identification and Assessment of Zones with Interfacial Partially Healed Cracks Using Lamb Waves Dispersion
Authors: Dudchenko A V 
Published: March 2021

Abstract
Requirements of modern technics and technology resulted in development of composite materials that provides higher target properties than individual materials. Then, self-healing technology was proposed to increase the durability of such materials. This technology can be applied to various material types, for instance to cementitious one like concrete and mortar as well as multilayer laminar composites. In the both cases one of the most important issue is to estimate the degree of healing as well as the change in the material mechanical and physical properties like strength, stiffness, permeability, etc. during healing process. Various methods are possible to implement for such assessment including non-destructive ways of evaluation. In the present work ultrasonic diagnostics involving Lamb waves is considered and evaluated to show its applicability for practical testing of multilayer composites. The method is based on Six-dimensional Cauchy formalism developed earlier.
Modeling the Construction Stages of Large Span Spatial Unique Buildings of Complex Geometry
Authors: Razzokov N S 
Published: March 2021

Abstract
The results of experimental-theoretical studies of precast-monolithic reinforced concrete shells of complex geometry, assembled from enlarged elements at the assembly stage, are presented. The studies were carried out on full-scale composite shells 116 m, 96x88, 48x48 m and 18x36 m, its enlarged elements 3x18 m and 3x24 m, as well as on a shell model at a scale of 1:15, 1:10 and 1:4. The stress-strain state of composite shells was investigated for different versions of mounting and uncoiling. Recommendations are given on rational methods of erection and incineration of shells from enlarged elements for public buildings.
Acoustic Safety of the Living Environment
Authors: Sankov P N , Hilov V V , Gvadzhaia B Dz , Makarova V N 
Published: March 2021

Abstract
Living in the city is affected by numerous factors, the action of which can cause harm to the human health. One of them is a noise pollution of the living environment by road transport. On the streets with intense traffic, noise levels often exceed the permissible values for the living environment. Various measures can be applied to reduce noise in residential areas, which will promote the extension of the period of active human activity, improve living conditions and increase in life expectancy. One of the most effective noise protection measures (especially in multi-storey buildings) is the use of windows with high soundproofing. There were conducted the studies of noise pollution of residential areas in Dnipro (Dnipropetrovsk). Experimental investigations were performed according to standard methods using modern acoustic measuring instruments. When obtaining data and processing the results there were used a special computer program to build noise maps in 3D (developed in Prydniprovska State Academy of Civil Engineering and Architecture) and methods of mathematical statistics. As a result of the research, a nomograph was constructed to determine the category of windows on different facades for different floors of the building. The nomograph enables to reasonably and quickly decide on the need to use windows with high soundproofing.
Features of Aerosols Solid Particles Movement with Various Densities inside Ventilated Airspace of the Cladding Façade Systems
Authors: Umnyakova N 
Published: March 2021

Abstract
This article presents the results of a study of aerosols solid particles movement inside ventilated air space of the ventilation facade. Particles of pollutants in the form of solid aerosol particles penetrate inside the air space of the ventilated façade. In the scientific literature, studies of settling processes (downward movement) of pollutant particles are given. However, the patterns of their movement inside the ventilated facades structure have not been studied thoroughly. The calculation method proposed by the author makes it possible to establish the speed of aerosol solid particles movement inside the ventilated air space of the ventilation facade and establish whether the particles will move upward together with the air flow or will settle on the structural elements of the ventilation facade facing the ventilated air space, taking into account the air flow rate and its temperature, and the size and density of aerosol contaminants.
Nonsteady Heat Loses to the Ground from a Building with Heated Underground Floor or Slab on Ground
Authors: Levin E , Okunev A 
Published: March 2021

Abstract
Numerical model and research results of nonsteady heat transfer between building and ground basement are in the article. Two most common cases of heat contact between building and ground basement are compared: building with heated underground floor and building on the slab on ground. Nonsteady heat loses over period about several years of building exploitation are analyzed that made possible to establish a patterns of heat transfer between building and ground with taking into account of ground around of building inertness. Heat loses from building represented using mean values at the one unit of length of building perimeter. In case of building with underground floor calculated nonsteady heat loses of floor and underground wall are shown. Also shown results of nonsteady heat transfer to ground from outdoor air and groundwater. Numerical methodic used in research based on explicit finite-difference method applicated to boundary value problem of nonsteady heat transfer in ground. The problem taking into account existence of moveable groundwater without heat transfer calculation in the volume of groundwater.
Socio-Cultural Aspect of Design and Construction of Modern Orthodox Churches
Authors: Pallotta V I , Vasilenko E V , Vasilenko P G 
Published: March 2021

Abstract
The article analyzes the aspects of socio-cultural design and construction of modern churches in Russia. Today, for many residents of our country, religion is a freely manifested spiritual, moral and regulatory framework that regulates the way society acts. Most of the residents consider themselves to be of various faiths. The professional community continues to discuss the problems of searching for a new image of a modern Church and the hereditary development of the system of objects of the Orthodox Church. Since design as a field of professional activity always projects through a specific type of consumer and features of production, it is possible to look at the problem in several planes. Thus, the socio-cultural aspect of the design and construction of Orthodox churches in modern Russia, conferences and seminars held in the capital and regions reflect the historical approach. In the historical approach to the Church building, the issues of its relation to traditions and historical models are discussed, without an active attitude to the social environment. The theological approach focuses on the spiritual dimension of Church activity. Creative activities related to the design and construction of Orthodox religious sites that solve the problems of spatial approach. The spatial characteristics of the Church building and its surroundings are Central. Architects, designers and planners solve the problem of integrating Orthodox aesthetics into the urban environment.
National Aspects in the Solution of the Project Activity of Modern Design in the Russian Style
Authors: Vasilenko E V , Vasilenko P G , Fursov A I 
Published: March 2021

Abstract
The article considers the influence of traditional Russian culture on the development of modern design. Based on the experience of the multinational culture of Russia, in the absence of a dialogue of cultures there are problems affecting the search for new solutions related to the cultural and historical past of Russia. Understanding the historical experience of past generations is of great interest and relevant not only from the point of view of preserving the existing traditions of artistic culture, but also the development of modern interior, based on the experience and work of Russian artists engaged in interior design, furniture, costume, etc. The novelty of the research lies in the application of the historical experience of past generations, in the development of design, taking into account the peculiarities of regional and Russian national culture as a whole. Using the research methods, the article analyzes the relationship of traditional folk culture and design, examines the national aspects in the decision of the project activity of modern design and the impact on the development of culture. It should be noted that the modern designer is able to retreat from the use of such familiar artificial materials and move to the lost connection between man and nature, using environmental materials, while maintaining a link with national history and culture. This problem field is determined not only by the narrowness and limitations of the future designer, but also a thorough, indecisive search and development of new style principles in the development of the interior.
The Concepts of Historical Costume Reenactment
Authors: Fudimova E 
Published: March 2021

Abstract
Historical costume reenactment is one of the most effective methods for studying and reproducing a fragmentary field of human activity in the past and it is done in many ways and forms. Up to date a unified system of all the variety of methods and practical approaches to study and classify forms, typologies, materials, manufacturing techniques of the costumes has not been created. The article describes the concepts and analyses systematic approaches which allow to aggregate data of interdisciplinary researches according to unique features of the reenactment event, the form of museum exhibiting and by parameters of the archaeological experiment. The results of this study can be used in scientific and design activities of specialists engaged in the field of museums exhibitions, amateur reenacting and the event industry.
The Past and Future of the Architecture of the Silk-Weaving Factories of Pavlovsky Posad
Authors: Malaya E V 
Published: March 2021

Abstract
The article is devoted to the issues of renovation and architectural history of silk-weaving enterprises in Pavlovsky Posad, a thorny path of factory development. Formation and development of the architecture of industrial enterprises, from a peasant hut with a loom and a village manufactory to modern enterprises with highly developed production. The process of origin of the red-brick direction in the architecture of industrial enterprises is considered. The author emphasizes the city-forming role of old enterprises and ways to adapt to the modern conditions of urban life. It demonstrates the possibility of developing existing silk-weaving enterprises, which has a positive impact on the living standards of the population and the economic independence of historical cities. Proposals for the reconstruction of the architecture of weaving enterprises, improvement of territories and proposals for the renovation of adjacent territories are presented. Renovation of silk-weaving enterprises, monuments of industrial heritage, has a significant impact on the development of architecture, urban planning, the city and its infrastructure, cultural and educational activities. Possible examples of reconstruction of enterprises are given.
The Use of Cold Recycling Technology to Increase the Resistance of Pavements to Rutting
Authors: Aleksandrov A S , Zaev A A , Kurmanov D H 
Published: March 2021

Abstract
The purpose of the article is to develop the construction of pavement with increased resistance to rutting, arranged during the repair of existing asphalt concrete pavements by cold recycling. It was established that the location of the ruts on the roadway is due to the distribution of the driveways of wheels of transport along the width of the lanes. Constructions of pavement with unequal strength along the width of the lane are proposed. Such constructions are arranged during the repair of pavement by milling asphalt concrete at the locations of the ruts by their width (90-100) cm and mixing the asphalt granulate with cement using cold recycling technology. The resulting mixture is placed in pits obtained by milling ruts, and compacted. As a result, two parallel strips of new monolithic material are obtained on the surface of the repaired coating within each lane. A new leveling or structural layer of asphalt mix is arranged on the existing coating with repaired ruts. During the exploitation of such pavement, hidden elements are hidden from the driver. Therefore, the nature of the distribution of passages along the width of the carriageway remains the same, but sections of the base located under the places of formation the rut under the new coating are made of durable, slightly deformable material.
Composition and Chemical State of Nanopowder Particles Obtained by Grinding Natural Diamond and by Detonation Synthesis
Authors: Sharin P P , Sivtseva A V , Popov V I 
Published: March 2021

Abstract
The initial composition and chemical state of primary particles of nanopowders obtained by grinding natural diamond and detonation synthesis have been investigated using X-ray photoelectron spectroscopy. It is shown that the primary particles of both nanopowders contain mainly carbon and oxygen atoms. Signals from nitrogen, sulfur, chlorine, and metal atoms do not exceed the noise level in the photoelectron spectrum. It has been found that in the primary particles of detonation synthesis nanopowder and nanopowder obtained by grinding natural diamond, the proportion of carbon atoms is ~ 46.5 and ~ 67.8% in the sp1-hybridization state, ~ 26.8 and ~ 17.4% in sp2 – hybridization, and ~ 26.7 and ~ 14.7%, respectively, in the composition of oxygen-containing functional groups.
Influence of Carbon Primary Nano Materials in Polymer Modified Binders on the Temperature Sensitivity of Asphalt Concrete During Operation
Authors: Shekhovtsova S Yu , Vysotskaya M A 
Published: March 2021

Abstract
The influence of the content of single-walled carbon nanotubes on the basic physical and mechanical properties of polymer-bitumen binders is studied. The effect of nanomodifiers on the morphostructural features of polymer-bitumen binders was studied using optical methods and fluorescence microscopy. The rational content of the modifying additive (0.0001 %) in the composition of the binder, which ensures the achievement of the specified parameters, is established. The influence of single-walled carbon nanotubes on morphostructural features is established. the nanomodifier initiates the processes of structuring interfacial layers, which leads to strengthening of physical bonds between the polymer macromolecules and the dispersed phase of the organic binder, which naturally affects the improvement of heat resistance, adhesive and cohesive strength of the binder. The study of polymer-bituminous binder films allowed us to record that when the nanomodifier is introduced, the polymer macromolecules decrease and their distribution over the binder volume is more uniform, which ensures its stability. It was found that the introduction of a rational amount of nanomodifier allows you to expand the required temperature range of asphalt concrete pavement performance by 25-34 %, while reducing the polymer content by 38 %.