Browsing by Author "Savytskyi, Mykola V."

Now showing 1 - 8 of 8
  • Thumbnail Image
    Item
    Carbon Materials for Electrically Conductive Concrete
    (EDP Sciences - Web of Conferences, France, 2024) Savytskyi, Mykola V.; Sukhyy, Kostyantyn M.; Savytskyi, Oleksandr M.; Babenko, Maryna; Shevchenko, Tetyana
    ENG: In recent decades, the direction of building materials science related to the creation of Smart Concretes has been rapidly developing. Smart Concretes, in addition to the functions of a structural material, also perform other functions that are related to their new properties. Among the large number of Smart Concretes, it is necessary to highlight Electrically Conductive Smart Concrete. This type of concrete is obtained by adding conductive fillers to the concrete mixture. Among them, carbon materials are the most promising in terms of their properties. Despite the large number of conducted studies of conductive fillers and conductive concrete, there is still no generalization and systematization of them. In addition, there are no standards for testing the conductive properties of both fillers and concretes. Therefore, the authors aimed to systematize data on Electrically Conductive Smart Concrete, as well as electrically conductive carbon fillers. A method for testing the electrical conductivity of Carbon Nanomaterials (CNMs) as fillers for Electrically Conductive Concrete is proposed. Approbation of the proposed method was carried out by determining the electrotechnical indicators of carbon fillers, such as coke breeze and carbon black.
  • Thumbnail Image
    Item
    Constructional Features of Shearwalls Stiffness in a Lightweight Steel Framing Buildings
    (De Gruyter Poland, Warsaw, 2019) Zinkevych, Oksana G.; Savytskyi, Mykola V.; Zinkevych, Andrii M.
    EN: Abstract. For low-rise buildings frame technologies using lightweight thin-wall steel constructions have become significantly widespread. The main influence on a building’s spatial rigidity under lateral forces is taken by shearwalls. The necessary stiffness can be accomplished by setting definite constructional parameters that are selected according to the design approach. The purposes of the work are to receive the dependencies of the influence of the constructional features on the stiffness of the shearwalls (using FEM models) and to set the value of the stiffness of the shearwall of any configuration by linking its parameters with the corresponding parameters of a standard shearwall through the established dependencies. The received dependencies of the effect of the main constructional factors and design approach for the stiffness of shearwalls can be used to provide spatial rigidity. A simplified design approach for estimating the influence of the main constructional features of shearwalls on their rigidity has been developed.
  • Thumbnail Image
    Item
    Design of Proactive Management System for Residential Buildings by Using Smart Equipment
    (TECHNOLOGY CENTER PC, Kharkiv, 2023) Savytskyi, Mykola V.; Shekhorkina, Svitlana; Bordun, Maryna; Babenko, Maryna; Tsyhankova, Svitlana; Spyrydonenkov, Vitalii; Savytskyi, Oleksandr M.; Rabenseifer, Roman
    ENG: This study's object is an energy efficiency of residential sector. The work is aimed at solving the task to improve the energy efficiency of the housing sector by devising technical solutions for monitoring and managing energy consumption and microclimate parameters of buildings. The proposed proactive management system for residential buildings consists of multi-sensors measuring CO2, temperature and humidity, smart meters of heat and electricity consumption, and smart plugs. The equipment is combined into single system through an integration controller with remote user access through an interactive web interface. A feature of the technical solution is the ability to collect, process, visualize, and archive data on the consumption of energy, as well as on the key parameters of the microclimate of residential premises. The advantages of the system are its flexibility due to the possibility of integrating additional devices during operation, as well as the use of standard communication protocols, which enables the interchangeability of component elements. The implementation and testing were carried out under the conditions of a real pilot site. The use of the system in practice confirmed the efficiency and stability of the operation, making it possible to obtain data on the parameters of energy consumption and microclimate and devising recommendations for reducing energy consumption at the pilot site. It was established that the microclimate meets the requirements of the standards (air temperature is about 22 °С while relative humidity does not exceed 60 %). Decrease in energy consumption can be achieved by reducing the temperature of the heat carrier in the absence of residents, as well as by considering the influence of weather conditions. During periods of residents’ activity, an excess of the permissible level of CO2 was recorded, therefore, automatic ventilation systems should be provided in the apartments.
  • Thumbnail Image
    Item
    Development of Test Methods in the Process of Electrically Conductive Concrete Production
    (IOP Publishing Ltd, 2024) Savytskyi, Mykola V.; Pang, Weixiang; Sun, Lijun; Savytskyi, Oleksandr M.; Bordun, Maryna; Li, Yang; Xia, Yanfang; Wang, Haojie
    ENG: Prevention of climate change, implementation of sustainable development principles in building industry, creation of Green buildings, Three-zero buildings (zero energy, zero emissions, zero waste), energy independent buildings maybe on the base of Smart Concrete. Electrically Conductive Concrete as type of Smart Concrete have the possibilities to create multifunctional hybrid structures for various purposes. The production of electrically conductive concrete is usually based on the introduction of carbon materials and carbon nanomaterials (CNMs) as electrically conductive fillers into its concrete composition. The theory of conductive percolation is used for design of electrically conductive concrete. To select electrically conductive carbon filler, it is necessary to summarize their electrically conductive characteristics. Today, there is no standard for determining the electrical conductivity of carbon fillers, nor is there a method for designing the composition of electrically conductive concrete; the development of both is imperative. Features of the preparation of electrically conductive concrete with hydrophobic carbon nanoparticles prone to aggregation are indicated. To obtain high quality electrically conductive products an operating system for quality control at the stages of the technological process of manufacturing must be proposed. Homogenization of the electrically conductive filler is very important. It is necessary to propose a method for assessing the stability of an aqueous suspension of a hydrophobic carbon material used for homogeneous distribution of a filler. Due to the lack of a standard, a method for determining the electrical conductivity of concrete is also needed.
  • Thumbnail Image
    Item
    How Much Is Needed? Discussion on Benchmarks for Primary Energy Input and Global Warming Potential Caused by Building Construction
    (MDPI, Basel, Switzerland, 2025) Rabenseifer, Roman; Kalivodová, Martina; Kononets, Yevhen; Mahas, Nataliia; Minarovičová, Katarína; Provazník, Robert; Bordun, Maryna; Shekhorkina, Svitlana; Savytskyi, Mykola V.; Savytskyi, Oleksandr M.; Semko, Volodymyr
    ENG: The operational energy efficiency of new buildings in the EU should be at the level of ultra-low or near-zero energy buildings. It is therefore relatively difficult to achieve further energy savings. However, the pre-operational phase—raw material sourcing, manufacturing, transportation, and construction—offers significant energy savings and greenhouse gas reduction opportunities, referred to as embodied energy and equivalent CO2 emissions. Unlike operational energy, no standard or legislative criteria have yet been established for embodied energy. Setting maximum embodied energy values converted to the unit of heated building area, accounting for building shape factor, and differentiating between high-mass and lightweight constructions are proposed. This study illustrates assessing environmental indicators based on building shape, highlighting the necessity of relative assessments over absolute values to favour energy efficiency. It also emphasizes that precise criteria should derive from authentic data collected during the energy certification and building permitting processes. Integrating assessments of embodied energy and operational energy demand facilitates a comprehensive evaluation of buildings’ environmental performance.
  • Thumbnail Image
    Item
    Parameters and Resource Potential of the Territory of Populated Places in the Zone of Influence of Stopping Points
    (EDP Sciences - Web of Conferences, France, 2024) Kulichenko, Nataliia; Savytskyi, Mykola V.; Tovbych, Valery
    ENG: The authors did not set a goal to make a comprehensive analysis of all aspects of the formation and functioning of the settlement territories in the zone of stopping points influence. The article is a review and a problem. It provides an overview and analysis of research directly or indirectly related to the problem under consideration. The results of multivariate calculations using the regulatory documents of Ukraine are presented: parameters of the zones of transport lines and stopping points influence (width of the zones of influence, total area of construction and area of residential construction in the zone of influence of one stopping point), resource potential (housing stock, population) for the largest, large, large and small settlements and their zones (central, middle, peripheral). The performed calculations show that the territories of settlements in the zone of influence of stopping points occupy an important place in the planning structure and vital activities of settlements due to their significant resource potential − territory, population, housing stock, as well as the close relationship of their structural parameters with the parameters of the transport infrastructure. which indicates the need to consider them as a whole.
  • Thumbnail Image
    Item
    Peculiarities of Organizational and Technological Approaches to the Post-War Restoration of Infrastructural Objects in Ukraine
    (E3S Web of Conferences, 2024) Savytskyi, Mykola V.; Radkevych, Anatolyi V.; Savytskyi, Oleksandr M.; Babenko, Maryna; Shevchenko, Tetyana
    ENG: As a result of russia's insidious war against Ukraine, thousands of infrastructure facilities and nergetical objects were destroyed or damaged. We are sure, Ukraine will win this war. Already today, the territories of the country freed from the occupiers with the destruction of residential and civilian buildings, infrastructure facilities need restoration. In Ukraine, the Government Plan for the Recovery of Ukraine has been developed. Ukraine's Recovery Plan is aimed at ccelerating sustainable economic growth. But this Program outlines general approaches and directions for he recovery and development of Ukraine. Therefore, it is necessary to develop detailed local rograms that contain organizational and technological approaches to the implementation of restoration works. The programs must to help local authorities, territorial communities in which housing and social infrastructure objects were damaged or destroyed as a result of russian armed aggression, to make decisions regarding the planning and implementation of restoration works and the development of territories. Purpose of the study: to develop detailed Local Program which specifies the National Programs of the Recovery Plan of Ukraine and contain organizational and technological approaches to the implementation of restoration works.
  • Thumbnail Image
    Item
    Sustainable Housing and Human Settlement
    (SHEE “Prydniprovska State Academy of Civil Engineering and Architecture”, Dnipro; Slovak University of Technology, Bratislava, Slovakia, 2018) Nikolaienko, Stanislav; Kulikov, Petro; Pshinko, Oleksandr M.; Savytskyi, Mykola V.; Radkevych, Anatolii V.
    ENG: This monograph presents the approaches and tools for green building, research results of assessment the potential of Europe for preservation and renovation of natural recourses to create the sustainable environment for life and industrial activity. New architectural, structmal and technological systems for construction low-rise buildings with using diffrerent materials have been considered and proposed. In the book, the technologies of energy efficient building design and construction are described. lt can be used as Urban Agenda for Regions' Sustainable Development. For researchers, university students, municipal administration, managers of business structures. This monograph was prepared with support of the Ministry of Education and Science of Ukraine in the framework of project "Scientific bases for creation of construction and agrarian clusters with a closed cycle of material and energy flows" (from 01 .01 .2017 until 31.12.2018, No. of state registration 0117U000367).