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  • Improvement of the thermal and hydraulic regime of the boiler room

    This article presents the results of studies of modes of regulation of heat energy supply to the network. Analysis of the existing (traditional) mode of weather regulation of heat supply to the network revealed a number of shortcomings, incl. low period of operation of boilers in effective modes. The proposed mode of supply of heat energy from the network will ensure a long-term efficient operation of the boiler units. It optimizes the consumption of heat energy for auxiliary needs by significantly reducing the number of starts of boiler units.

    Keywords: boiler unit, temperature schedule, specific gas consumption, heat output, weather regulation

  • New developments in housing construction abroad Part III

    Development is a necessary component of the processes taking place around us, without which it becomes impossible to improve the quality of our lives. In this article, we will focus on innovations in construction, but only those that are not just an innovation, but rather a necessary component that allows you to bring the process and economy of construction to a higher level, and, simply put, are the engine of development of the industry. So, let's look at a few innovations that, when used in mass production, can significantly simplify, speed up and reduce the cost of building construction.

    Keywords: construction, innovation, 3D printing, modular construction, innovative bricks, concrete, plastic, hybrid structures, wood, hollow elements, plastic, composite sleepers, foundations, cladding, aluminum, ceramics, green construction, eco-floating houses

  • Determination of the floor thickness of cross-glued boards on example of CLT-plates Binderholz (Austria)

    It describes the material CLT, which is used for the manufacture of floor slabs. The required floor thickness is calculated from the condition of rigidity under a load of 2.4 kN / m2 for various spans. The values of deflections are determined from the stiffness condition. The calculated deflection values are compared with the standard values. Based on these results, the recommended floor thickness is assigned for each span.

    Keywords: cross-laminated timber, timber constructions, floor, deflection, rigidity

  • Technical and economic comparison of the effectiveness of the use of fiber-reinforced concrete based on fibers of various origins

    The article investigates the physical and mechanical properties of fine-grained fiber-reinforced concrete with metal, polypropylene and polyamide fibers, using Portland cement, hyperplasticizer. Comparison of strength characteristics of fiber-reinforced concrete made using metal fiber, polypropylene and polyamide fibers is carried out. A technical and economic comparison of the efficiency of using fibers of various origins has been made. According to the cost calculations, the use of polyamide fibers is cost-effective, since the cost of materials is lower than the cost of fiber-reinforced concrete materials based on polypropylene fibers of this composition.

    Keywords: fiber concrete, hyperplasticizer, fiber, microsilica, tensile strength, nature of destruction, mechanical property, polypropylene fiber, polyamide fiber, cement, reinforcement, adhesion, monolithic structure, cost

  • Implementation of the concept of BIM technologies in the construction industry for the purposes of the cadastre in Russia

    This article is devoted to information modeling of real estate objects. The most suitable option for three-dimensional data representation for managing information about buildings and structures, in time and space, is BIM technologies. When they are used in construction, a detailed model of the capital construction object is created, therefore, such information can become the basis for creating and filling in a 3D cadastre.

    Keywords: BIM technologies, information model, 3D format, information modeling, Unified state register of real Estate, general data environment

  • Analysis of methods for dismantling and demoling reinforced concrete structures of military infrastructure objects

    This work analyzes the methods of dismantling and demolition of reinforced concrete structures, namely: manual, mechanical and semi-mechanical method, drilling and blasting method, thermal method. The main advantages and disadvantages of these methods, the possibility and economic feasibility of their use in the interests of the Ministry of Defense of the Russian Federation are also considered. On the basis of the analysis carried out, taking into account the limitations of the use of the methods, a promising electro-hydraulic pulse method for dismantling reinforced concrete structures was proposed and the necessary conditions for its implementation in industrial mastabs in the interests of the Ministry of Defense were indicated.

    Keywords: reinforced concrete, reinforced concrete structures, dismantling, demolition, work safety, efficiency, military infrastructure

  • Disadvantages of the building information model at all stages of its life and ways to minimize their impact

    With information modeling of buildings, the time and money spent on creating a building project is significantly minimized, and it also becomes possible to make changes to the project, reducing the likelihood of a designer making a mistake. However, building information models have a number of disadvantages expressed at each stage of the object's life cycle. In this article, the main stages of the life cycle of a building were highlighted, according to regulatory documents. The drawbacks of using information models at each stage are highlighted and their influence on the work in the information modeling environment is considered. Ways to minimize these shortcomings, taking into account the prevalence of BIM-models of the building at the present time, are proposed. The general problems of transition from the classical design method to information models are highlighted.

    Keywords: Infromation model, BIM, lifecycle of building, building, projecting

  • Awakening the hydraulic activity of granulated slag by chemical substances

    The production of Portland cement can be characterized as harmful to nature and human society, resource and energy consuming. The use of by-products of metallurgical and chemical production in obtaining a hydraulic binder is a relevant and promising direction. binder for strengthening and stabilizing the soil of the road base The article investigates the regularities of the initial hardening processes of finely ground slag occurring during structure formation as a result of activation with alkaline solutions and sodium silicates.

    Keywords: granular slag, normal density, setting time, activation, awakening of hydraulic activity, binder, hardening

  • Concrete for construction of underwater oil and gas facilities

    The results of the development of compositions and technologies for their preparation for use in the structures of marine gravity oil and gas production platforms and underwater oil and gas pipelines are presented. The efficiency of using basalt fiber fibers, plasticizing additive "Sika ViscoCrete 5-800" and soot waste from thermal power plants in the manufacture of fine-grained concrete is proved. As a result of the experiments, the strength characteristics of fiber concrete were determined depending on the amount of superplasticizer and soot waste introduced when using equal-moving mixtures. An increase in the compressive and Flexural strength of samples modified with basalt fiber, superplasticizer and industrial waste is shown, which contributes to an increase in the operational characteristics of oil and gas offshore structures by increasing the parameters of frost resistance and water resistance of structural materials.

    Keywords: oil and gas facilities, fiber-reinforced concrete mixture, the superplasticizer basalt fibre, particulate waste strength

  • Increasing the bearing capacity of a bored pile by silicatization

    This article discusses the problem of increasing the load-bearing capacity of bored piles. The technology of injecting fixing solutions into the ground under the foundations of a two-story building in the city of Azov to increase the load-bearing capacity of bored piles was described.

    Keywords: structurally unstable soil, pile Foundation, load-bearing capacity, soil consolidation, silicatization, camouflage broadening, driving piles, bored piles, screw drilling, concreting

  • Arrangement of oil and gas fields and their infrastructure

    A review article on the development and design of oil and gas fields, in particular on infrastructure facilities such as gas piston and gas turbine power plants, shift housing, and a fire station. Infrastructure is one of the important parts of field development, which includes the construction of roads and various communications, as well as industrial and residential buildings and structures.The construction of the block-modular method is considered in detail, as it is a promising direction in modern construction. The field development itself is a set of construction and installation works and organizational and technical developments. And the design of the arrangement includes the development of project documentation. The oil and gas industry plays a large role in our time, therefore, increasing its efficiency and economic development is one of the main tasks.

    Keywords: field, construction, industry, oil, gas, infrastructure, facility, power supply, power plants, block, block-module, technological design

  • Increasing the bearing capacity of connections on inclined screwed rods

    In the joints of wooden elements, obliquely screwed rods are installed in pre-drilled holes. In the absence of glue, the bearing capacity of the joint depends on the design resistance of the wood to chipping along the surface of contact with the thread of an obliquely screwed in rod. The purpose of this work is to assess the change in the bearing capacity and deformability of the joints of wooden elements on inclined screwed rods when glue is added. Samples of joints were tested on screwed-in rods, made with glue and without glue, three samples for each type of connection. It was found that the use of EPTs-1 glue increases the bearing capacity of joints on inclined screwed rods by the criterion of the breaking load by 1.33 times, by the criterion of the upper boundary of the elastic work area of ​​the joint by 1.5 times, at the level of reaching the ultimate deformation Dult = 2 mm - 1.8 times. Full deformations Dp at the same load within the elastic work of the joints are reduced by more than 3 times. Compared to joints on glued-in rods made of periodic profile reinforcement, the consumption of glue is reduced by 6.8 times.

    Keywords: connections on inclined screwed rods, glued in rods, wooden elements of composite cross-section, maximum bearing capacity, upper boundary of the elastic work area of joints, deformation of joints

  • Analysis of ways to strengthen the building structures of military infrastructure facilities

    The work is devoted to the analysis of existing and applied in practice methods of strengthening building structures, an assessment is given of the choice of the optimal method for strengthening building structures, the main advantages and disadvantages of these methods, the possibility and economic feasibility of their use in the interests of the Ministry of Defense of the Russian Federation are considered.

    Keywords: building structures, reinforcement, bearing capacity, technical inspection, efficiency, military infrastructure

  • Multidisciplinary research

  • Interconnected development of foreign language skills when teaching English online

    Today the process of teaching and learning is undergoing significant change resulting from the global transition of education from a classical face-to-face classroom to a new digital environment. Teaching foreign language skills, far more than teaching other applied academic skills, has been moved online. An English teacher is expected to be able to successfully deliver live online lessons. Obviously, teaching English online has both similarities and differences from traditional face-to-face teaching in the classroom. However, the success of online learning seems to depend not only on advanced conference platforms and cutting-edge technologies. First and foremost, the efficiency of online classes is determined by teachers’ ability to work in a new learning environment as well as how teachers are prepared for new challenges. Thus, teaching English online requires new professional approaches from the teacher. The paper is focused on interconnected teaching productive and receptive foreign language skills: reading, writing, speaking and listening when administering an online lesson with adult learners. Requirements to using digital.

    Keywords: online learning, foreign languages, adult learners, productive and receptive skills, educational platform