Ukrainian Journal of Civil Engineering and Architecture最新文献

{"title":"ON THE ISSUE OF THE COMPREHENSIVE IMPACT OF NEGATIVE AND HARMFUL FACTORS ON THE OCCURRENCE OF OCCUPATIONAL DISEASES","authors":"A.S. Belikov, Yu.E. Strezhekurov, S.Yu. Ragimov, V.V. Kharchenko","doi":"10.30838/j.bpsacea.2312.261223.7.1001","DOIUrl":"https://doi.org/10.30838/j.bpsacea.2312.261223.7.1001","url":null,"abstract":"Most of the time, a person spends indoors, and up to 40 % of this time is spent at their workplace. Therefore, the environmental conditions, whether at home or at work, have a significant impact on the human body and their performance. The modern world is influenced by more than a hundred real existing negative factors that affect industry, daily life, and the natural environment. According to the standards defined in DSTU-N B A.3.2-1:2007 “Occupational Safety Standards. Guidelines for Identifying Hazardous and Harmful Factors and Protection Against Their Impact in Production”, environmental factors are divided into several groups: physical, chemical, biological and psychophysiological. The presence of these factors affects the health and safety of individuals while performing their professional duties. The purpose of the article. Conducting a comprehensive analysis of the impact of negative and harmful factors on the occurrence of occupational diseases in the workplace with the aim of developing recommendations for improving working conditions and preventing occupational diseases. Conclusion. 1. A comprehensive approach is necessary to address the tasks of creating safe working conditions and providing a normal working environment for enterprise personnel. 2. The significant complexity of the comprehensive impact of harmful factors on production workers requires the provision of optimal working conditions and the preservation of workers' health. 3. It is important to study the combined effect of various production environment factors on the worker's body in manufacturing processes involving high temperatures. 4. The assessment of working conditions in areas with elevated thermal radiation is not yet complete because it does not consider qualitative characteristics of thermal radiation, such as spectral composition, vector energy distribution, the influence of splashes, and particles of molten metal, and the operating mode of heat radiation sources. 5. Based on the analysis of collected data in the workshops of petrochemical and metallurgical enterprises, it has been found that the most dangerous and challenging working conditions, with limited research from the standpoint of working conditions, are the workplaces and areas with elevated thermal radiation, where sanitary norms are exceeded by more than 100 times. 6. Quantitative and qualitative characteristics of excessive thermal radiation, such as spectral composition (direct and transformed radiation) and vector distribution, as well as the influence of splashes and particles of molten metal, were not taken into account when addressing protection from thermal radiation. 7. There is currently no unified methodology for researching working conditions and developing recommendations for their improvement.","PeriodicalId":228894,"journal":{"name":"Ukrainian Journal of Civil Engineering and Architecture","volume":"90 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140433738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ASSESSMENT OF THE ENERGY FACILITY IMPACT ON ENVIRONMENTAL POLLUTION","authors":"V. Biliaieva, O.I. Gubin, P. Mashykhina, A.Yu. Usenko, L.O. Tymoshenko","doi":"10.30838/j.bpsacea.2312.261223.16.1002","DOIUrl":"https://doi.org/10.30838/j.bpsacea.2312.261223.16.1002","url":null,"abstract":"Problem statement. The task of assessing the influence of the boiler house on atmospheric air pollution is under consideration. Carrying out such an assessment is very important when locating boiler houses near residential areas. Since the weather conditions for each region are characterized by a change in the direction of the wind, the intensity of atmospheric diffusion, the appearance of a calm, it is important to have information about the formation of pollution zones in sedimentary zones. To solve this important problem, it is very important to use mathematical modeling, since it is currently impossible to create a sufficient number of observation posts near the objects of the fuel and energy complex. The purpose of the article. Numerical analysis of the influence of the boiler house on the intensity of atmospheric air pollution under different weather conditions. Methodology. The 3D equation of convective-diffusion transport is used to estimate the pollution zones formed in the atmospheric air when it is emitted from the boiler house pipe. The model takes into account atmospheric stratification, impurity emission intensity, wind profile, wind speed. Numerical integration of the equation of convective-diffusion transport of impurities is carried out using finite-difference schemes. The modeling equation is split into an equation for the convective transport of the pollutant and an equation for the dispersion of the pollutant due to atmospheric diffusion. The equation describing the change in the concentration of the impurity in the atmospheric air as a result of the emission of the pollutant from the pipe is solved separately. At the next stage, finite-difference schemes are built that allow solving the splitting equation. Scientific novelty. On the basis of the constructed numerical model, the zones of atmospheric air pollution during the emission of CO from the pipe of the boiler house are determined. A numerical model is proposed that allows forecasting atmospheric air pollution for different weather conditions within the framework of one program package. Practical significance. On the basis of the proposed numerical model, the forecasting of the zones of chemical pollution of the atmospheric air in the settlement zone in which the boiler house is located was carried out. The results of the computational experiment are presented.","PeriodicalId":228894,"journal":{"name":"Ukrainian Journal of Civil Engineering and Architecture","volume":"48 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140433924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"STUDY OF THE EFFECT OF STRUCTURE AND PHASE COMPOSITION ON THE WEAR RESISTANCE OF SPARINGLY ALLOYED METASTABLE AND SECONDARY HARDENING STEELS","authors":"Економнолегованих Метастабільних, ТА Вториннотвердіючих Сталей, Б ГЛУШКОВАД., докт. техн","doi":"10.30838/j.bpsacea.2312.140723.50.954","DOIUrl":"https://doi.org/10.30838/j.bpsacea.2312.140723.50.954","url":null,"abstract":"Introduction. The paper considers the influence of wear on the formation of a “white band” in metastable austenitic, martensitic-austenitic and secondary hardening steels of the Cr−Mn−Ti system additionally alloyed with Mo, B, V. The influence of the structure and phase composition on the wear resistance of sparing. Results. Surfacing of the studied materials was carried out in copper molds with different rates of forced cooling. Metastable austenitic, martensitic-austenitic and secondary hardening steels of the Cr−Mn−Ti system additionally alloyed with Mo, B, V were studied. Additional alloying of these steels with titanium in an amount of 2...5 % contributed to the prevention of spalling along the fusion zone. Near the fusion line there is a base metal zone with a width of 7...15 µm. After testing at the volume temperature of the working part of the specimen ТV = 553…573 K in the contact volumes of the deposited metal of the 30Kh2V8F type, broadening of the grain boundaries, shear lines, finer grains compared to the underlying layers were revealed. Outside the zone of plastic deformation, the size of the grains corresponds to their sizes before the start of testing, the grain boundaries are relatively thin. The number and location of carbides observed at X430, X80O magnifications are also similar to the structural characteristics of the deposited metal of the 30Kh2V8F type. At close values of the contact pressure in the friction pair, the time of formation of a crack of critical length increases with an increase in the effective surface energy γе (including the energy of plastic deformation). Thus, the crack resistance indices (CR, j-integral, δС) and, consequently, the wear resistance of maraging steels are higher than those of metastable and tool steels. Conclusions. The conducted studies confirm the possibility of the formation of a “white band” both in alloys with a high concentration of elements − austenitizers (Mn, C, Ni), and when alloyed with carbide-forming elements with a relatively low affinity for carbon (V, Mo). The crack resistance indices (CR, j-integral, δС) and, consequently, the wear resistance of maraging steels is higher than those of metastable and tool steels.","PeriodicalId":228894,"journal":{"name":"Ukrainian Journal of Civil Engineering and Architecture","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121379036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CURRENT STATUS AND PROPOSALS REGARDING THE PROTECTION OF THE CIVILIAN POPULATION","authors":"T. Zhydkova, V. Hleba, S. Chepurna","doi":"10.30838/j.bpsacea.2312.140723.72.957","DOIUrl":"https://doi.org/10.30838/j.bpsacea.2312.140723.72.957","url":null,"abstract":"The Code of Civil Protection of Ukraine is the main legislative document regulating measures for the protection of civilians. A number of normative documents were created to protect the population from the action of conventional means of destruction, air shock wave, in accordance with the requirements of the legislation. The current legislation and building codes on technical measures of civil protection did not provide for the realities of war, did not take into account the needs of people with limited mobility. For the second year, the war continues, people are dying, and the leadership of the State Emergency Service sees no problems in protecting civilians and has no desire to change the existing imperfect civil protection system. The overwhelming number of current shelters and anti-radiation shelters was built in Soviet times and according to Soviet standards. Today, buildings meet the requirements of the mid-20th century for protective properties, but do not at all meet the modern requirements and realities of war. In particular, the estimated capacity of storages and anti-radiation shelters does not correspond to the anthropological parameters of modern man, including the less mobile population groups. An analysis of the regulatory documentation of the countries of the world showed that the capacity indicators specified in the standards are most likely an error that occurred several decades ago and has been repeated during this time. We analyzed the possibility of using shelters facilities in accordance with the planning of benches and beds according to the recommendations of the State Emergency Service. We proposed the necessary parameters  or placing for placing rows of benches and beds in shelters and anti-radiation shelters. The given examples show that using existing shelters cannot be acceptable according to the State Emergency Services standards and recommendations.However, after carrying out a set of measures for the reconstruction and refurbishment of these buildings, these premises can be used as temporary structures to protect the population.","PeriodicalId":228894,"journal":{"name":"Ukrainian Journal of Civil Engineering and Architecture","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123467175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"WAYS TO IMPROVE THE ENERGY EFFICIENCY OF PIPELINES AND STRUCTURES USING AEROGEL","authors":"Допомогою Аерогелю, Ю.С. Соколан, Sokolan Yu.S","doi":"10.30838/j.bpsacea.2312.140723.102.961","DOIUrl":"https://doi.org/10.30838/j.bpsacea.2312.140723.102.961","url":null,"abstract":"Problem statement. The paper explores ways of energy saving in buildings, namely, the compliance of the regulatory framework with European standards, the possibilities of reducing heat losses during the transportation of energy carriers through pipelines on the example of heat supply systems and reducing heat losses during the operation of buildings and structures. The second part of the article presents the results of analytical studies of various heat-insulating materials that are most commonly used in Ukraine. Some of these materials cannot be used on structures and pipelines of complex configuration. The issue of energy efficiency, along with improving sound insulation properties, reducing fire hazard, and reducing loads on the load-bearing structures of buildings and structures, can be addressed by using aerogels as a thermal insulation material. The material is characterized by a low dependence of the thermal conductivity coefficient on changes in ambient temperature, which makes it the best option for use in harsh operating conditions. The purpose of the article is to consider ways to improve the energy efficiency of structures and pipelines using modern aerogel insulation material. Conclusions. Having conducted analytical studies of various thermal insulation materials, it was found that aerogels in roll form, in addition to a low heat transfer coefficient, are characterized by better performance properties, namely non-flammability of the material, environmental safety, low weight, which reduces the load on structures, ease of installation, the possibility of using for structures of complex configuration, and a high rate of sound insulation.","PeriodicalId":228894,"journal":{"name":"Ukrainian Journal of Civil Engineering and Architecture","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132382166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ANALYSIS OF INFILTRATION WATER INTAKES PRODUCTIVITY","authors":"V. V. Sharkov, О.V. Nesterovа, О.А. Zhuravleva, V. Bozhenko","doi":"10.30838/j.bpsacea.2312.140723.122.963","DOIUrl":"https://doi.org/10.30838/j.bpsacea.2312.140723.122.963","url":null,"abstract":"Purpose. Construction of new and reconstruction of existing water supply systems, in order to increase water consumption, provides for the search and analysis of water supply new sources and water intake facilities. This issue acquires particular importance when looking for additional power sources for water supply systems with relatively low water consumption. To reduce the load on wastewater treatment plants that process water from open sources, infiltration intakes are used, which take water from underground aquifers. Infiltration water intakes can be vertical and consist of wells united by prefabricated pipelines or horizontal and have an underground horizontal water intake part − a drainage pipe. Therefore, the problem arises of determining the water intake that has the highest productivity under the same local conditions. Methodology. The productivity of water intakes is characterized by the influence of determining factors on the flow rate of water intakes with one-way feeding in a free-flow aquifer. The conditions of the location of the intake parts of the intakes in the aquifer and their sizes were considered as factors of influence. Results. The analysis of the existing methods for determining the productivity of underground infiltration water intake structures, depending on their location, the influence of water supply sources and design features. It has been determined that the greatest impact on the productivity of water intakes is the amount of water level decrease in the aquifer during water withdrawal, that is, the position of the dynamic water level relative to the static one. Also, the distance from the intake structure to the water's edge has a significant impact. Reducing the distance between the wells and the length of the drainage pipe, within the limits of the study conditions, has no effect on the results. As a result of the research, it has been established that, under the adopted hydrogeological and technical conditions, horizontal underground water intakes are distinguished by a large flow rate. Scientific novelty. The analysis of factors influencing the choice of infiltration water intake structures is carried out. The results of determining the productivity of structures under the same initial conditions are shown. Practical value. Using the results of the analysis allows you to most quickly and effectively solve the issues of choosing the option for powering water supply systems. The analysis has identified the most significant factors influencing the productivity of water intakes and makes it possible to vary them to achieve a result.","PeriodicalId":228894,"journal":{"name":"Ukrainian Journal of Civil Engineering and Architecture","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131147929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"IMPLEMENTING BUILDING INFORMATION MODELING IN RETROFITTING OF BUILDING PROJECTS AND ENERGY EFFICIENT CONSTRUCTION","authors":"Yev.V. Khurudzhi, D. Chashyn, K. Dikarev, A.O. KUTSENKO-SKOKOVA","doi":"10.30838/j.bpsacea.2312.140723.127.964","DOIUrl":"https://doi.org/10.30838/j.bpsacea.2312.140723.127.964","url":null,"abstract":"Nowadays building projects have been encouraged to adopt green and sustainable construction strategies as the construction sector is responsible for using 42 % of the world’s energy, 30 % of its raw materials, and 25 % of its fresh water. The priority purpose is not only to upgrade and enhance projects of existing buildings, the target is also to reevaluate the approach of the whole construction sector [1]. The issue requires complex and modern methods which should include retrofitting as well as reconstruction of existing infrastructure. The housing fund of Ukraine as well as other European countries calls for alterations which will lead to gaining and raising its energy efficiency. To create the optimum alternatives there should be conducted an investigation of the possibilities of changing the real estate’s usage. A framework for value engineering and building information modeling, especially appropriate for existing buildings, is required to aid decision-makers in selecting the best options for current building utilization.","PeriodicalId":228894,"journal":{"name":"Ukrainian Journal of Civil Engineering and Architecture","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131815121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RESEARCH ON THE LIGHT INFLUENCE FACTOR ON EMPLOYEES IN THE DESIGN OF CONSTRUCTION FACILITIES","authors":"O. Rabich, I. V. Meshcheriakova, L. Chumak","doi":"10.30838/j.bpsacea.2312.140723.79.958","DOIUrl":"https://doi.org/10.30838/j.bpsacea.2312.140723.79.958","url":null,"abstract":"Problem statement. The development and wide implementation of information and communication technologies have made personal computers standard work tools in workplaces. The requirements for the quality of the lighting environment have also changed. The content and volume of information that a person needs to perceive and process has increased. The working time for decision-making has decreased. The direct influence of the light environment (illumination level, its distribution in the room, color temperature) on the functional state of a person has been determined in previous studies. In addition, the functions of the visual analyzer, as a part of the whole human nervous system, are related to emotions, cognitive and executive functions, which affects work productivity. The purpose of the article is to increase the safety of the work of designers and its effectiveness when using modern information and communication technologies due to a high-quality light environment, as the main factor affecting the performance of a person. Conclusions. The conducted studies determined that the main factors affecting work efficiency and error-free decision-making for intense mental work are the factors of the light environment. An algorithm for the study of significant factors influencing the light environment in intense mental work from a computer monitor with the determination of performance indicators has been developed. The application of the developed methodology makes it possible to determine the change in the quantitative values of performance indicators depending on the change in the parameters of the light environment.","PeriodicalId":228894,"journal":{"name":"Ukrainian Journal of Civil Engineering and Architecture","volume":"260 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123101661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"FORECASTING VOLUMES OF ACCUMULATED WASTE","authors":"Т.I. Rusakova, О.V. Dolzhenkova","doi":"10.30838/j.bpsacea.2312.140723.86.959","DOIUrl":"https://doi.org/10.30838/j.bpsacea.2312.140723.86.959","url":null,"abstract":"Problem statement. The task of assessing the volume of accumulated waste in the territory of the Dnipropetrovsk region, which is constantly increasing, occupying a larger area and causing damage to the environment, is under consideration. To solve this forecasting problem, it is necessary to create a regression mathematical model for statistical evaluation and analysis of the factor variables’ influence to the total volume of accumulated waste. The purpose of the article. Creation of a mathematical model for forecasting assessment of possible volumes of accumulated waste in the territory of the Dnipropetrovsk region by adjusting the volumes of factor variables. Methodology. Analysis of the dynamics of changes in the volumes of generated, utilized, incinerated, removed waste and capital investments and costs for waste management and establishment of trends in their changes based on descriptive statistics. Application of correlation analysis methods to establish the most statistically significant relationships between factor variables and the resulting feature. The use of regression analysis methods to obtain the coefficients of the regression mathematical model and statistical indicators that explain the probability of the significance of these coefficients. Scientific novelty. A multiple regression mathematical model was developed, which takes into account the factor variables affecting the process of waste accumulation in the territory of the Dnipropetrovsk region. Practical value. The developed regression mathematical model makes it possible to estimate the required amount of investment and forecast the amount of current costs to adjust the total amount of accumulated waste. Conclusions. A mathematical model was created to analyze the volume of accumulated waste in the territory of the Dnipropetrovsk region. Based on this model, the volumes of accumulated waste were calculated. The average value of the relative error of the calculated data is 1.03 %, while the maximum value of the error is 1.97 %, which confirms the adequacy of the developed mathematical model.","PeriodicalId":228894,"journal":{"name":"Ukrainian Journal of Civil Engineering and Architecture","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133909249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MODIFIED COMPOSITE CEMENTS IN THE SYSTEM СаО–Al2O3–SO3–H2O","authors":"V. Derevianko, H. Hryshko, O. Vatazhishin","doi":"10.30838/j.bpsacea.2312.140723.59.955","DOIUrl":"https://doi.org/10.30838/j.bpsacea.2312.140723.59.955","url":null,"abstract":"Problem statement. One of the most important issues today is the reconstruction, reinforcement of buildings and structures, as well as the creation of new construction materials with the required physical and mechanical properties. The solution to this problem is possible through controlling and regulating the properties of the initial components of the concrete mixture, increasing the amount of surface components at the interface. To control the properties of construction materials, and thus to obtain the cement stone with the specified physical and mechanical properties is possible by means of using various mineral and surface-active additives in the composition of hardened cement stone. Development of sulfoaluminate compositions based on calcium sulfates, alumina cement and surface-active substances (surfactants) makes it possible to significantly expand the raw material base and the scope of application. The purpose of article – obtaining a composite binder with increased density, water resistance and improved technological factors. Conclusions. Alumina cement G-40, 50 and gypsum G-5-II in the ratio of 30−70 % (with hemihydrate gypsum being its main material) have been used in the research to achieve the set purpose. Their properties have been determined as well as the optimal ratio of components for obtaining a specific mineralogical composition with the maximum content of chemically bound water is carried out. Studies have shown that increased content of calcium sulfate has a positive effect on the amount of ettringite and that the optimal value is in the range of 30−40 % by weight of the composition. The exact ratio of components can be determined based on their mineralogical compositions and hydration process conditions. At the ratio of AC-40/G % – 70/30 % a considerable amount of calcium hydroaluminates remain; compressive and flexural strength is 14 and 10 MPa, respectively. When conducting research, the effect of plasticizers on the main technological and physical and mechanical properties of composite binders has been established: the Sika Viscocrete G additive has the greatest plasticizing effect. The composite binders presented above can be used for the manufacture of dangerous structures.","PeriodicalId":228894,"journal":{"name":"Ukrainian Journal of Civil Engineering and Architecture","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130269217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}