The study findings on the utilization of ethyl silicates for enhancing bitumen properties are showcased. The impact of ethyl silicate grades 28, 32, and 40 on the characteristics of BN 90/10, BN 70/30 construction bitumen, and BND 60/90 road bitumen was evaluated. On the basis of the conducted studies, grades of bitumen and ethyl silicate were selected, the compositions based on which have the best performance. The compatibility of ethyl silicates with bitumen was tested. It has been established that a smaller amount of ethyl silicate is combined with high-quality bitumen. Based on the infra-red spectra, it was shown that there is no chemical interaction between bitumen and ethyl silicate, but a hydrolysis reaction occurs with the formation of hydrogen bonds. It has moreover been determined that ethyl silicates exhibit both plasticizing and structuring effects on bitumen, resulting in improved frost resistance of polymer-bitumen compositions. Requirements for materials aimed at waterproofing of structures for soil and concrete constructions have been developed and presented. In order to increase the low-temperature limit of applicability of polymer bitumen compositions, additives of liquid oligomeric rubbers from the Yaroslavl synthetic rubber plant (SK-1), as well as latexes from the Krasnoyarsk and Omsk plants were studied together with ethyl silicates. Recommendations are given on the use of ethyl silicates in waterproofing mastics and asphalt polymer concrete.

Keywords: bitumen, ethyl silicates, compatibility, properties, plasticizing and structuring additives, waterproofing mastics, asphalt polymer concrete, IR spectra, soil and concrete structures

Geodesic control plays an important role in the reconstruction of cultural heritage sites. It allows the accurate determination of the geometric parameters of historic objects, which can be particularly important for restoring their historic size and shape to achieve the most accurate match to the original appearance. Geodetic work is carried out to support the accuracy of design and construction. They allow you to monitor the consistency of the design documentation and the actual work performed. This can help avoid errors and additional work during the construction phase and ultimately ensure a higher quality of reconstruction. This paper describes geodetic support during the reconstruction of the residence of Patriarch Kirill. Located on a huge territory the complex has a high religious-historical and cultural significance, which determines the quality of geodetic control at all stages of reconstruction and construction works.

Keywords: object of cultural heritage, architectural monuments, reconstruction, geodetic surveys, geodetic network, geodetic control, geodetic monitoring

The technology of organizing the construction of decentralized energy systems based on wind power plants is given. New design solutions for the structural elements of wind turbines and overhead lines (tower, collapsible ballast-type foundation, protective element) are proposed, taking into account the specifics of the technology of construction and installation works. Data are given on reducing the cost of construction production by optimizing the machines and mechanisms used.

Keywords: wind turbine structures, overhead lines, tower, collapsible ballast-type foundation, protective element, in-line method, decentralized system

In this article, the calculation and evaluation of building structures of vertical steel tanks, which are subjected to various loads, is carried out.

Keywords: oil industry, petroleum products, accidents, vertical steel tanks, load

The assumptions of mathematical models for calculating the crack resistance of reinforced concrete structures are considered. For each of them, an analysis was carried out to determine whether they correspond to reality throughout the entire life cycle of the structure: from the hardening of the concrete mix to destruction. Based on the results of the analysis, it was proposed to use only one single calculation at the level of standards to assess the crack resistance of structures - according to the crack opening width, acrc. So, for example, at a certain value of acrc, the structure will still remain airtight (the cracks will be non-through), and if this value is exceeded, it will not. At the same time, the calculations already available in the norms for limiting permeability and the safety of reinforcement will still remain in demand. At the junction of the theory of damage accumulation and nonlinear fracture mechanics, a compressed algorithm is proposed for possibly taking into account the influence of cracks at all scale levels of the concrete structure, the key for which is the normalization of the statistical parameters of the distribution of discontinuities by diameters, lengths, openings, depths, directions, distances between discontinuities, etc.

Keywords: reinforced concrete, crack resistance, cracking moment, crack width, plasticity coefficient, damageability, non-linear fracture mechanics

The paper presents the results of research into the road polymer-modified asphalt (PMA) concrete, which is supposed to be used in the Siberian region, in particular, in the city of Krasnoyarsk and the Krasnoyarsk Territory. For the preparation of asphalt concrete, a polymer additive was used in the form of DST-30 grade thermoplastic elastomer. In addition, the results of studies using IR spectroscopic methods of the processes of interaction between bitumen and DST dissolved in industrial oil are presented. It has been established that the change in the physical properties of bitumen when DST is added to its composition is a consequence of chemical interaction in the studied composite binder. On the previously developed composition of the polymer bitumen binder, hot asphalt polymer concretes were prepared, which were studied for the main physical and mechanical indicators. The resulting compositions meet the regulatory requirements. When compared with the properties of asphalt concrete on "pure" bitumen, it was found that the introduction of a polymer additive leads to an increase in durability at 20 and 500C, water resistance and strength reduction at 00C, which indicates an increased crack resistance at a negative temperature of polymer-modified asphalt concrete compared to regular asphalt concrete. Recommendations on the factory technology for the preparation of asphalt concrete are given. The resulting compositions are proposed for industrial implementation by road maintenance bodies and firms in the city of Krasnoyarsk.

Keywords: polymer bitumen binder, asphalt polymer concrete, thermoplastics, compositions, properties, experiment, industrial oil, regression equations

This article examines the impact of nanotechnology on the development of flame retardant materials in the field of construction. The general provisions of nanotechnology and nanocomposites, their characteristics and classification are described. Examples of the use of nanotechnology to create fire-resistant materials and their direct application in construction are presented. The main problems of nanocomposites are presented, the solution of which will allow to bring passive fire protection of buildings and structures to a new level.

Keywords: fire protection, fire-resistant material, nanotechnology, nanocomposite, composite material, composite, polymer, material

The article studies the relevance of online tutoring, considers various existing systems for organizing online tutoring, identifies their strengths and weaknesses, and identifies the most relevant functions of the considered services. The design of the architecture of the developed software product is considered. The goals for further research are defined.

Keywords: online tutoring, tutor, online learning, design patterns, application architecture, information system

An example of a technical examination of a cultural heritage object of federal significance is given in order to identify the fact of violation of the Federal legislation during its restoration. Recommendations are given on the preparation of a technical conclusion of this examination. The article was written on the basis of the research carried out (at the request of law enforcement agencies).

Keywords: technical expertise, object of cultural heritage, violation of the law, building structures, temple, dome, restoration

The main content of the diversification of production as the activity of business entities is considered. manifested in the purchase of existing enterprises, organizations of new enterprises, this article proposes a method of using GIS to optimize the sewage system of critical areas. The nearby territory of the Volgograd Arena stadium was chosen as the site of work.

Keywords: ArcGIS, Storm and Sanitary Analysis, Civil 3D, Sewage.

This paper provides the results obtained from the studies of polymer-bitumen binder (PBB) used for the production of polymer-modified asphalt cements (PMA). Thermoplastic elastomers produced at Voronezh Synthetic Rubber Plant, as well as at Chinese and Korean production units have been studied in order to obtain PBB. It has been established that locally-produced thermoplastic elastomers of DST-30 grade demonstrate the best performance indicators. To reduce the costs, speed up the preparation process and improve the properties of PBB, a new technology for incorporation of DST into bitumen was developed. It is suggested that DST should first be dissolved in industrial oil of the trademark IM-20, and after that the polymer solution should be incorporated into bitumen. Furthermore, the limiting concentrations of DST additive in oil were determined, which range from 10 to 30%. The influence of the DST additive on the properties of the domestically produced bitumen of the Achinsk Oil Refinery grade BND 90/130 was revealed. Studies have found that the inclusion of additives leads to an increase in extensibility, elasticity and a decrease in the brittleness temperature of bitumen, which indicates an increased deformability of the polymer-bitumen binder. Using the method of experiment planning, the optimal composition of PBB was determined: the ratio of DST and oil stands at 19% DST and 81% oil; the amount of polymer solution in the binder equals 9%. This composition was prepared in laboratory conditions, its properties were determined and compared with the requirements. The prepared composition of the PBB was recommended for industrial implementation to the roadway maintenance bodies of the city of Krasnoyarsk and the Krasnoyarsk Territory.

Keywords: diversification of management, production diversification, financial and economic purposes of a diversification, technological purposes of ensuring flexibility of production

The optimization of the taxable base of capital construction objects is considered, this is the desire of customers and operating organizations to manage the cost of ownership of one or another technical solution, which is certainly reasonable in modern conditions, when when making a technical solution, its full cost is estimated, including the so-called cost of ownership for the entire period of the life cycle of the object, from the formation of an idea for the creation of a future object to its decommissioning.

Keywords: collapsible foundation, protective element, flow method, wind power plant, building structures

This article discusses and demonstrates the need for writing and functioning of a high-quality information security system for a modern enterprise that performs activities in various fields (industry, energy, humanitarian activities, etc.). Its role in creating conditions is also analyzed. for the economic security of the organization itself and the country as a whole. The paper presents the current classification of information security threats. The activities that are aimed at protecting data in the world of the modern world are analyzed once again, and examples of activities aimed at protecting data in the world of the modern world are given, as well as an example of the most common reasons for its leakage today.

Keywords: information security, economic security of an enterprise, information protection, threats and risks of information security, artificial intelligence

The article provides an overview of wearable devices that improve the quality of user recognition of objects of the surrounding world, reveals the process of developing an intelligent module for recognizing objects of urban infrastructure for "sound glasses" - a device designed for blind users. The functionality of the module under development, its architecture is characterized, the process and results of neural network training for object recognition are described, and an algorithm for identifying the color of traffic lights is given. The results of testing the developed software module are presented. The software module created in this work is an integral component of a fully functioning device "sound glasses", the use of which will allow people with visual disabilities to get information about events and the surrounding environment and navigate even in an unfamiliar environment.

Keywords: computer vision, neural network, smart glasses, sound glasses, visually impaired, YOLOv5, object recognition

The article describes the development of a virtual emulator of the polyvinyl chloride drying process. The development of the emulator is implemented using the Omegaland development environment. The characteristics and functional structure of the polyvinyl chloride drying process in a fluidized bed dryer are presented. Mathematical models of elements of simulated system are considered, algorithm of their operation is characterized. The steps of developing a virtual polyvinyl chloride drying simulator are described. The flowchart is assembled in the OmegaLand Visual Modeler modeling environment. The fluidized bed dryer module was developed in the integrated development environment of Microsoft Visual Studio in the C++ programming language. The developed dryer model was integrated into the Omegaland library. The developed dryer model was tested in the emulation mode of the polyvinyl chloride drying process.

Keywords: mathematical model, drying, polyvinyl chloride, Omegaland, emulator, virtual simulator, fluidized bed dryer