Transfer of innovative technologies

Justification of the conditions of application of fire protective coating for wood

Yuriy Тsapko, Аleksey Tsapko, Olga Bondarenko, Kostiantyn Kaveryn — Wed, 14 Jan 2026 00:00:00 +0200

Abstract. Thus, experimental studies have established that an untreated sample of wood ignited under thermal action, the flame spread over the entire surface, which led to its combustion with a mass loss of more than 60 %, and the temperature of flue gases increased by more than 500 ºС in 60 s of testing. The use of an intumescent coating under the influence of temperature leads to the formation of a foam coke layer and inhibition of heat transfer of high-temperature flame to the material and a decrease in mass loss to 6.6 g/(m²ˑs) and a temperature of less than 160 ºС. During the study of the flame spread index, it was found that when the flame acted on untreated wood samples for 21 s, their ignition occurred, the temperature was 367 °С and intensive flame spread over the surface, the flame spread index was 43.5. During the tests of fire-protected wood samples, the following values were obtained, namely, the wood sample treated with an inorganic coating caught fire for 890 s, the flame spread over the surface occurred only to the first section, the maximum temperature of flue gases was 82 °С for a time greater than 2.5 times, and the flame spread index decreased by 6.5 times. For a sample of wood treated with a fire-retardant intumescent coating, the wood did not ignite, the flame spread index was 0. Thus, there is reason to argue about the possibility of directed regulation of fire protection processes in wood by using fire-retardant coatings capable of forming a protective layer on the surface of the material that slows down the rate of wood burning

Rationale for the Conceptual Model of Project Management for Mod-ernizing Transport Mobility in Ukraine’s Territorial Communities under Martial Law and During Post-war Recovery

Olena Verenych, Ihor Vasyliev, Andriі Lіmonov — Wed, 14 Jan 2026 00:00:00 +0200

The full-scale armed aggression against Ukraine has substantially transformed the operating principles of transport systems: the threats of martial law have compounded pre-war shortcomings, exacerbating existing problems in the transport sector. The conditions of martial law have affected the transport mobility of territorial communities through a combination of direct and indirect destructive factors, leading to a systemic deterioration of these systems. The article is devoted to addressing the modernization of transport systems in Ukraine’s territorial communities, which had pre-war systemic deficiencies and have suffered large-scale destruction because of the armed aggression against Ukraine. The research is grounded in a qualitative theoretical methodology that combines a critical review of scientific literature with conceptual modeling. The model is constructed by synthesizing theories of sustainable urban mobility, the resilience of critical infrastructure, and contemporary project management. The principal result is the proposed Conceptual Model that defines the project management system for modernizing the transport systems of territorial communities. The scholarly contribution lies in formulating model-specific principles, including dual-use infrastructure (civil and defense), heightened resilience, adaptability, and sustainability-based prioritization. The model specifies the key structural elements, stakeholders, resources, an adapted project life cycle (initiation and prioritization, adaptive planning, execution and monitoring, closure and operations), technologies and tools (GIS, BIM), external and internal environmental factors, and the core processes (project portfolio initiation and formation; planning and resource allocation; execution and monitoring & control; communications and reporting). Its practical value is in providing a systematic and transparent instrument for public authorities and project teams. Its implementation will make it possible to harmonize approaches to recovery, improve the efficiency of resource use, and ensure that the modernization of transport systems contributes to building safer, more sustainable, and more resilient transport systems in territorial communities, capable of withstanding future threats

Properties of ASTOR self-healing concrete (SHC) using PENETRON innorganic additive

Andrii Surmachevsky, Yurii Kovalenko, Maksym Mykolaiets — Wed, 14 Jan 2026 00:00:00 +0200

In modern construction, the problem of increasing the durability and reliability of concrete structures is becoming increasingly relevant. One of the promising areas is the creation of self-healing concretes with the properties of repairing microcracks during operation, which significantly extends the service life and reduces repair costs. An important aspect is the correct selection of components and technologies for their application, since the effectiveness of such materials depends not only on the introduction of special additives, but also on the consistency of the entire composition of the concrete mixture. As part of the development of an innovative product, self-healing concretes (SHC), in cooperation with LLC "ASTOR INVEST" and LLC "PENETRON UKRAINE" designed concrete with the additive "PENETRON ADMIX" was developed. The object of the study is the self-healing ability of the SHC type design concrete mixture. The following methods were used to evaluate the processes: determination of water permeability, phenolphthalein indication and structural analysis using an electron microscope. The beginning of recovery for the design composition occurs already on the 5th day, with a decrease in water permeability, and reaches zero after 17–22 days under pressure and without pressure. The control samples continued to pass water, despite the fact that the the water permeability also decreased for them Accordingly, the design composition with the additive has a higher degree of recovery. This crystal hydrates, which restore the microstructure of concrete. Structural analysis confirmed that the interaction of the components contributes to the restoration of the strength and tightness of concrete. The results obtained indicate that the creation of effective self-healing concretes requires a targeted approach to the selection of the composition and technology, which takes into account the interaction of all components of the system to achieve optimal characteristics and durability.

Research on the dynamics of the hydraulic drive of the boom lifting mechanism of a mobile robot crane-manipulator

Dmytro Mishchuk, Yevheniy Horbatyuk, Maksym Balaka — Wed, 14 Jan 2026 00:00:00 +0200

У цій роботі створено математичну модель механізму підйому стріли крана-маніпулятора, яка враховує масоінерційні параметри механічної частини та динамічні характеристики гідроприводу. На основі побудованих моделей було проведено числове моделювання руху штока гідроциліндра залежно від зовнішніх навантажень та параметрів системи. Це дозволило оцінити вплив основних факторів на динамічні характеристики приводу. Для вирішення задачі було використано метод Рунге-Кутті 4-го порядку. Результат дослідження показав, що для вирішення цієї задачі необхідно використовувати точніші методи розрахунку. Збільшення кількості точок розрахунку менш точними методами не дозволяє знайти рішення, проблема до значного збільшення обсягу пам'яті для розрахунків.

Чисельне моделювання було виконано в Mathematica та мові програмування Python.

Це дослідження також показало, що великий розмір діаметра приводного циліндра впливає на динаміку процесу руху. завдяки чому, збільшення діаметра приводного гідроциліндра призводить до зниження швидкості висування та руху та створює мікроколивання в гідравлічній системі, що є наслідком хвильових процесів у такій приводній системі. Зменшення діаметра гідроциліндра також небажане, ця система може швидко позбутися неконтрольованого руху, що призведе до збільшення прискорення, а також, і динамічних навантажень. Також такий рух досить важко контролювати системою керування.

Study of influence of organic pollutants on alkali activated cements based on recycled aggregates

Victoria Zozulynets, Valentyna Grabovchak, Vasyl Ivanychko, Igor Papuch — Wed, 14 Jan 2026 00:00:00 +0200

Необходимо решить вопрос о наличии в структуре переработанного заполнителя остатков органических соединений, несгоревших частиц углерода, древесины и других загрязняющих веществ, характерных для отходов разрушения железобетонных конструкций, образовавшихся в результате боевых действий. Именно с этой целью было проведено исследование для определения влияния органических соединений, а именно древесных опилок, на физико-механические характеристики щелочно-активированных бетонов, изготовленных с использованием переработанных заполнителей.
Использование гибридных щелочных цементов эффективно для общестроительных и специальных материалов, а именно при изготовлении бетонных смесей и бетонов на их основе с повышенным риском структурного разрыхления из-за повышенного содержания органических остатков и продуктов сгорания. Материалы на их основе способны выдерживать значительные воздействия деформаций набухания-усадки, вызванные наличием продуктов сгорания и органических остатков. Это позволяет прогнозировать эффективность их введения для контроля процессов структурообразования бетонов на основе переработанных заполнителей
. Дополнительное введение древесных опилок в количестве 3% и 5% приводит к снижению прочности бетона как на изгиб, так и на сжатие. Однако для систем со 100% содержанием гранитного заполнителя процент снижения прочности больше по сравнению с составами, включающими переработанный заполнитель. А для систем, включающих исключительно переработанный заполнитель, прочность на сжатие увеличивается на 1 МПа (26,2 МПа, состав № 10) при содержании 3% древесных опилок и на 0,6 МПа (25,8 МПа, состав № 15) при содержании 5%.
Результаты показывают, что использование переработанного заполнителя, хотя и приводит к снижению физико-механических характеристик бетона, при правильном подборе процентного содержания компонентов смеси позволяет контролировать заданные характеристики бетона, в частности, прочность на изгиб и сжатие.

Approaches to forming AI-EI Models of mental space for managing project portfolios in construction

Valerii Hudov — Wed, 14 Jan 2026 00:00:00 +0200

In this article analyzes standards, methodologies and scientific works in the field of project management, which can serve as a scientific basis for developing an approach to creating, implementing and maintaining the mental space of a construction project portfolio. The existing definitions of mental space are analyzed. Based on the analysis, taking into account the specifics of the construction industry, our own definitions are proposed (mental space of a construction project portfolio, mental stability of participants and stakeholders of a construction project portfolio, processes for ensuring the effective functioning of the mental space of a construction project portfolio). The specified definitions can form the basis of the thesaurus of the researched direction. A set of principles for creating, implementing and supporting the mental space of a portfolio of construction projects is proposed. The features of creating, implementing and supporting the mental space in the field of implementing the portfolio of construction projects are identified. The “conflict-efficiency” model is proposed for the development of mental space models. Based on the results of the research, the conceptual model of the mental space of EI-AI portfolio management are proposed, the specified model in particular is presented in a plural form. One of the important processes of implementing and supporting the mental space of a portfolio of construction projects is described – the tailoring process. A SWOT analysis of the proposed approach in the first and second forms was conducted. According to the results of such analysis, the proposed approach can be considered viable. Conclusions were drawn regarding the conducted research. Vectors of further research in the chosen direction were formulate

AI- driven optimization of energy consumption in smart residential complexes

Pavlo Kudrynskyi — Wed, 14 Jan 2026 00:00:00 +0200

This article examines the application of artificial intelligence technologies for optimizing energy consumption in smart residential complexes. The study analyzes contemporary approaches to implementing machine learning algorithms, neural networks, and predictive analytics for managing energy resources in multi-apartment buildings. The research demonstrates that AI-driven systems can reduce energy consumption by 25-40% compared to traditional management methods. The article presents a comprehensive analysis of architectures for intelligent energy management systems, including integration with Internet of Things sensors, smart meters, and building automation systems. Particular attention is given to machine learning methods for forecasting energy demand, optimizing heating, ventilation, and air conditioning systems, and managing renewable energy sources. The study examines challenges associated with implementing AI solutions, including data privacy, system integration complexity, and the need for substantial initial investments. The results show that deep learning algorithms demonstrate the highest efficiency in predicting consumption patterns, while reinforcement learning methods are most effective for real-time optimization. The article also discusses the economic feasibility of implementing such systems, demonstrating payback periods of 3-5 years depending on building size and climatic conditions. Recommendations are provided for developers, building managers, and policymakers regarding the implementation of AI-based energy management systems in residential complexes.

Comparative evaluation of silver-bearing and copper-molybdenum condensates

Igor Grechnyuk, Oleksandra Matsenko — Wed, 14 Jan 2026 00:00:00 +0200

This work is devoted to the study of the corrosion and erosion resistance of composite materials based on copper and molybdenum, which are used as contact materials. It was investigated that the introduction of zirconium and yttrium into the Cu-Mo system (Cu – (10-12%)Mo – (0.2%)Zr,Y) contributes to an increase in corrosion resistance by 20%, and the corrosion depth is reduced to 0.02 g/(m2·year). It is shown that the dependence of the change in contact temperature on the contact resistance is linear, the higher contact resistance leads to more intensively contact temperature increase. The dependence of the contact resistance of contacts made of Cu-Mo and Ag-CdO materials on the number of switching cycles is established. A comparative characteristic of contacts made of silver-containing materials and contact materials made of Cu-Mo is carried out and the advantage of last one is shown

Technologies for Producing Thermal Barrier Coatings for Gas Turbine Engine Blades

Karina Grechanyuk, Victoriya Chornovol — Wed, 14 Jan 2026 00:00:00 +0200

This article examines technolo-gies for producing thermal barrier coatings for gas turbines with the aim of improving their ef-ficiency and operational longevity. Optimal pa-rameters are estalished for various types of coatings, including the design and component composition of individual layers. The article describes laboratory and indutrial electron-beam units used for coating depostion, which provide optimal conditions for material pro-cessing and melting. The technical features of these units, their construction, and their ap-plicability for depositing different types of coat-ings are highlighted. Special attention is given to the latest L-9 unit, which differs from its pre-decessors by employing a cold cathode for elec-tron-beam heaters, thereby increasing their sta-bility and service life. The article also presents information on the control systems of the units and the operating principle of the L-9 unit, which can be used for depositing various types of protective coatings, including new micro-layered silicide coatings.