Pub Date : 2022-06-20DOI: 10.23939/jtbp2022.01.094
M. Lobodanov, P. Vegera, Zinoviy Zinoviy, A. Karpushyn
Due to economic trends in the building industry, the investigation of the residual bearing capacity of reinforced concrete elements has been receiving more and more attention in recent years. Studying the effect of damage on the bearing capacity of reinforced concrete elements is one of the main themes of investigation in this field. Results of 4 reinforced concrete beams’ testing are proposed, one of which was the control one (tested without damages) and three- typically damaged in the compressed zone at different load levels. As a result, the most crucial effect was detected by the type of damage, load, and neutral axis position change. In addition, research results demonstrate an increase of 3.8% in reinforced concrete beams bearing capacity if they are damaged under the load, compared with the unloaded damaged reinforced concrete beams.
{"title":"THEORETICAL ANALYSIS AND EXPERIMENTAL INVESTIGATION OF THE DEFECTS IN THE COMPRESSED ZONE OF THE REINFORCED CONCRETE ELEMENTS","authors":"M. Lobodanov, P. Vegera, Zinoviy Zinoviy, A. Karpushyn","doi":"10.23939/jtbp2022.01.094","DOIUrl":"https://doi.org/10.23939/jtbp2022.01.094","url":null,"abstract":"Due to economic trends in the building industry, the investigation of the residual bearing capacity of reinforced concrete elements has been receiving more and more attention in recent years. Studying the effect of damage on the bearing capacity of reinforced concrete elements is one of the main themes of investigation in this field. Results of 4 reinforced concrete beams’ testing are proposed, one of which was the control one (tested without damages) and three- typically damaged in the compressed zone at different load levels. As a result, the most crucial effect was detected by the type of damage, load, and neutral axis position change. In addition, research results demonstrate an increase of 3.8% in reinforced concrete beams bearing capacity if they are damaged under the load, compared with the unloaded damaged reinforced concrete beams.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127200610","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}
Pub Date : 2022-06-20DOI: 10.23939/jtbp2022.01.043
Oksana Rykhlitska, Тetiana Kropyvnytska
The article analyzes the experience of using Portland limestone cement for the production of ready-mixed concretes. It is shown that polycarboxylate superplasticizers (PCE) play a decisive role in providing required technological and construction-technical properties of concrete. The data show that the most effective PCEs for maintaining the workability of the concrete mixture over time and obtaining the required strength class of concrete are РСЕ based on modified acrylic polymers. It was found that polycarboxylate superplasticizers provide a significant water-reducing effect (ΔW/C = 38%) and was achieved compressive strength class C45/55. It is shown that such concretes are characterized by its rapid strength development (fcm2/fcm28=0.54). The ready-mix concrete with PCE was used for concreting foundations of wind turbines on the wind power plant with provide the technological properties and of reduce CO2 emissions.
{"title":"EFFECT OF POLYCARBOXYLATE SUPERPLASTICIZERS ON THE PROPERTIES OF READY-MIX CONCRETE","authors":"Oksana Rykhlitska, Тetiana Kropyvnytska","doi":"10.23939/jtbp2022.01.043","DOIUrl":"https://doi.org/10.23939/jtbp2022.01.043","url":null,"abstract":"The article analyzes the experience of using Portland limestone cement for the production of ready-mixed concretes. It is shown that polycarboxylate superplasticizers (PCE) play a decisive role in providing required technological and construction-technical properties of concrete. The data show that the most effective PCEs for maintaining the workability of the concrete mixture over time and obtaining the required strength class of concrete are РСЕ based on modified acrylic polymers. It was found that polycarboxylate superplasticizers provide a significant water-reducing effect (ΔW/C = 38%) and was achieved compressive strength class C45/55. It is shown that such concretes are characterized by its rapid strength development (fcm2/fcm28=0.54). The ready-mix concrete with PCE was used for concreting foundations of wind turbines on the wind power plant with provide the technological properties and of reduce CO2 emissions.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122671016","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}
Pub Date : 2022-06-20DOI: 10.23939/jtbp2022.01.063
U. Marushchak, O. Pozniak
Based on the analysis of energy consumption and carbon dioxide emissions of the construction industry, it is stated that the reduction of energy consumption in Ukraine is achieved through termomodernization of the existing building stock and build new buildings, which meet energy efficiency requirements. Comparison of thermal parameters of different wall materials are given. It is shown that multilayer wall constructions must be used to ensure the necessary indicators of external walls of energy efficient buildings. The use of effective wall materials allows to ensure compliance with the given temperature difference to regulatory documents and reducing of heat transfer by transmission during the heating season, solar heat gains during cooling season.
{"title":"ANALYSIS OF WALL MATERIALS ACCORDING TO THERMAL PARAMETERS","authors":"U. Marushchak, O. Pozniak","doi":"10.23939/jtbp2022.01.063","DOIUrl":"https://doi.org/10.23939/jtbp2022.01.063","url":null,"abstract":"Based on the analysis of energy consumption and carbon dioxide emissions of the construction industry, it is stated that the reduction of energy consumption in Ukraine is achieved through termomodernization of the existing building stock and build new buildings, which meet energy efficiency requirements. Comparison of thermal parameters of different wall materials are given. It is shown that multilayer wall constructions must be used to ensure the necessary indicators of external walls of energy efficient buildings. The use of effective wall materials allows to ensure compliance with the given temperature difference to regulatory documents and reducing of heat transfer by transmission during the heating season, solar heat gains during cooling season.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121596629","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}
Pub Date : 2022-06-20DOI: 10.23939/jtbp2022.01.049
O. Voznyak, Yuriy Yurkevych, O. Dovbush, O. Savchenko, M. Kasynets
The article presents the results of monitoring the state of the air environment of Lviv region in 2020. The main sources of pollution are identified and statistical data on emissions of pollutants into the atmosphere are given. The aim of the work is to analyze the state of the environment, natural resources of Lviv region, trends in their changes and environmental measures. Volumes of pollutant emissions from stationary sources of air pollution from enterprises, institutions and organizations of Lviv region were determined by conducting an inventory of stationary sources of pollutant emissions into the air, types and volumes of pollutant emissions into the atmosphere by stationary sources, equipment facilities of the region.
{"title":"MONITORING THE STATE OF THE AIR ENVIRONMENT IN THE LVIV REGION","authors":"O. Voznyak, Yuriy Yurkevych, O. Dovbush, O. Savchenko, M. Kasynets","doi":"10.23939/jtbp2022.01.049","DOIUrl":"https://doi.org/10.23939/jtbp2022.01.049","url":null,"abstract":"The article presents the results of monitoring the state of the air environment of Lviv region in 2020. The main sources of pollution are identified and statistical data on emissions of pollutants into the atmosphere are given. The aim of the work is to analyze the state of the environment, natural resources of Lviv region, trends in their changes and environmental measures. Volumes of pollutant emissions from stationary sources of air pollution from enterprises, institutions and organizations of Lviv region were determined by conducting an inventory of stationary sources of pollutant emissions into the air, types and volumes of pollutant emissions into the atmosphere by stationary sources, equipment facilities of the region.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130876807","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}
Pub Date : 2021-12-15DOI: 10.23939/jtbp2021.02.052
U. Marushchak, M. Sanytsky, N. Sydor, I. Margal
The development of high-performance materials, which are characterized by high compressive and flexural strength, durability and performance properties, is an urgent problem of modern construction. Engineered cementitious composites are one such material. Improving of properties of composites is achieved by partial replacement of cement with supplementary cementitious materials. The ratio of binder and filler components and superplasticizer consumption were selected. The optimal ratio of cement:fly ash:sand is 1:1:1 and the dosage of polycarboxylate superplasticizer is 0.75% by weight of the binder. The reduction of the negative impact of the increased amount of fly ash, which is characterized by low reactivity, is provided by the introduction of metakaolin and alkaline hardening activator. Alkaline activated cement system is characterized by increasing of the early strength in 1.5 times comparison with equivalent mixture without alkaline activator. Strength of alkaline activated cementing matrix after 28 days is 66.1 MPa and specific strength Rc2/Rc28 is 0.61.
{"title":"ESIGNING OF ALKALINE ACTIVATED CEMENTING MATRIX OF ENGINEERED CEMENTITIOUS COMPOSITES","authors":"U. Marushchak, M. Sanytsky, N. Sydor, I. Margal","doi":"10.23939/jtbp2021.02.052","DOIUrl":"https://doi.org/10.23939/jtbp2021.02.052","url":null,"abstract":"The development of high-performance materials, which are characterized by high compressive and flexural strength, durability and performance properties, is an urgent problem of modern construction. Engineered cementitious composites are one such material. Improving of properties of composites is achieved by partial replacement of cement with supplementary cementitious materials. The ratio of binder and filler components and superplasticizer consumption were selected. The optimal ratio of cement:fly ash:sand is 1:1:1 and the dosage of polycarboxylate superplasticizer is 0.75% by weight of the binder. The reduction of the negative impact of the increased amount of fly ash, which is characterized by low reactivity, is provided by the introduction of metakaolin and alkaline hardening activator. Alkaline activated cement system is characterized by increasing of the early strength in 1.5 times comparison with equivalent mixture without alkaline activator. Strength of alkaline activated cementing matrix after 28 days is 66.1 MPa and specific strength Rc2/Rc28 is 0.61.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130554032","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}
Pub Date : 2021-12-15DOI: 10.23939/jtbp2021.02.058
V. Labay, B. Piznak, Bogdan Gulai, I. Sukholova
The solar energy that reaches the Earth is free, but installations to convert solar energy into heat, as well as equipment for transporting and storage that heat, require some investment. A significant part of the components of these systems are metals. Pipelines in solar collectors and heat exchangers are made of copper, aluminum is used for the absorber and housing, and the steel is often used in heat storage tanks. One of the options to reduce the cost of solar collectors and increase their efficiency is to use polymeric materials instead of metals. The main advantages of using polymeric materials in solar thermal collectors are their cost, especially if you are taking into account the growth of the renewable energy market and rising prices for metal . The use of polymers also reduces the costs of production, transportation and installation for the user.
{"title":"PROSPECTS OF USING POLYMERIC MATERIALS IN THE CONSTRUCTION OF SOLAR COLLECTORS","authors":"V. Labay, B. Piznak, Bogdan Gulai, I. Sukholova","doi":"10.23939/jtbp2021.02.058","DOIUrl":"https://doi.org/10.23939/jtbp2021.02.058","url":null,"abstract":"The solar energy that reaches the Earth is free, but installations to convert solar energy into heat, as well as equipment for transporting and storage that heat, require some investment. A significant part of the components of these systems are metals. Pipelines in solar collectors and heat exchangers are made of copper, aluminum is used for the absorber and housing, and the steel is often used in heat storage tanks. One of the options to reduce the cost of solar collectors and increase their efficiency is to use polymeric materials instead of metals. The main advantages of using polymeric materials in solar thermal collectors are their cost, especially if you are taking into account the growth of the renewable energy market and rising prices for metal . The use of polymers also reduces the costs of production, transportation and installation for the user.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"716 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124797404","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}
Pub Date : 2021-12-15DOI: 10.23939/jtbp2021.02.039
V. Gunka, Y. Prysiazhnyi, Y. Hrynchuk, Iurii Sidun, Yuriy Demchuk, Volodymyr Bidos, V. Reutskyy, M. Bratychak
The possibility of modification of oxidized petroleum bitumen 70/100 produced by JSC "Ukrtatnafta" (Kremenchuk, Ukraine) with maleic anhydride was studied. The influence of maleic anhydride amount, process duration, and temperature on the main physical and mechanical characteristics of modified bitumen was studied. The optimal amount of maleic anhydride introduction to bitumen was established. It is found that 2 wt. % maleic anhydride allows to increase the softening temperature of the modified bitumen (from 46 °C to 52 °C). Adhesion to crushed stone also increases (from 2.5 points to 4.5 points) and other indicators improve. Sufficient time to modify the bitumen with maleic anhydride was 30 minutes. The optimum modification temperature for obtaining the modified bitumen with maleic anhydride is 130 °C. Increasing the temperature of the modification has a negative effect on the final physical and mechanical properties of the binder.
{"title":"INVESTIGATION OF THE PROCESS OF MODIFICATION OF PETROLEUM ROAD BITUMEN BY MALEIC ANHYDRIDE","authors":"V. Gunka, Y. Prysiazhnyi, Y. Hrynchuk, Iurii Sidun, Yuriy Demchuk, Volodymyr Bidos, V. Reutskyy, M. Bratychak","doi":"10.23939/jtbp2021.02.039","DOIUrl":"https://doi.org/10.23939/jtbp2021.02.039","url":null,"abstract":"The possibility of modification of oxidized petroleum bitumen 70/100 produced by JSC \"Ukrtatnafta\" (Kremenchuk, Ukraine) with maleic anhydride was studied. The influence of maleic anhydride amount, process duration, and temperature on the main physical and mechanical characteristics of modified bitumen was studied. The optimal amount of maleic anhydride introduction to bitumen was established. It is found that 2 wt. % maleic anhydride allows to increase the softening temperature of the modified bitumen (from 46 °C to 52 °C). Adhesion to crushed stone also increases (from 2.5 points to 4.5 points) and other indicators improve. Sufficient time to modify the bitumen with maleic anhydride was 30 minutes. The optimum modification temperature for obtaining the modified bitumen with maleic anhydride is 130 °C. Increasing the temperature of the modification has a negative effect on the final physical and mechanical properties of the binder.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123345271","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}
Pub Date : 2021-12-15DOI: 10.23939/jtbp2021.02.046
P. Novosad, O. Pozniak
The development of plant-based materials will help to solve the problems associated with the use of agricultural waste, and at the same time to get inexpensive and effective insulation materials based on environmentally friendly local raw materials. The advantages of such materials are availability, fast recovery, low cost, environmental friendliness and low thermal conductivity. In the work with the use of flax straw at a consumption of Portland cement of 150 kg per 1 m3 of concrete, thermal insulation lightweight concrete with an average density of 350 kg/m3 and a strength of 0.53 MPa was obtained. The article presents the results of research of temperature changes on the surface of external enclosing structures using the developed thermal insulation concrete based on flax straw in combination with a solar energy absorber. It is established that such a structure of an external wall provides thermal inertia of a protection within 7-7.5 hours.
{"title":"THERMAL INSULATION MATERIALS BASED ON FLAX STRAW","authors":"P. Novosad, O. Pozniak","doi":"10.23939/jtbp2021.02.046","DOIUrl":"https://doi.org/10.23939/jtbp2021.02.046","url":null,"abstract":"The development of plant-based materials will help to solve the problems associated with the use of agricultural waste, and at the same time to get inexpensive and effective insulation materials based on environmentally friendly local raw materials. The advantages of such materials are availability, fast recovery, low cost, environmental friendliness and low thermal conductivity. In the work with the use of flax straw at a consumption of Portland cement of 150 kg per 1 m3 of concrete, thermal insulation lightweight concrete with an average density of 350 kg/m3 and a strength of 0.53 MPa was obtained. The article presents the results of research of temperature changes on the surface of external enclosing structures using the developed thermal insulation concrete based on flax straw in combination with a solar energy absorber. It is established that such a structure of an external wall provides thermal inertia of a protection within 7-7.5 hours.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"470 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121466467","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}
Pub Date : 2021-12-15DOI: 10.23939/jtbp2021.02.024
Myron Hоhоl, M. Kotiv, I. Peleshko, Dmytro Sydorak
The article is devoted to the regulation of the stress-strain state in the compressed elements of steel frames under full operating load. It is proposed to perform reinforcement of such elements with different end eccentricities of load application by rational regulation of the stress-strain state in the reinforcement elements. It is shown that the use of SDS adjustment for frame racks increases their bearing capacity and reduces deformability and welds. The new proposed technology of SDS regulation and possible constructive decisions are offered. Numerical experiment revealed high efficiency of application of the proposed solutions during the reconstruction and reinforcement of the metal frame system. The implementation of the proposed method of SDS regulation confirmed its effectiveness.
{"title":"REGULATION OF STRESS-DEFORMED STATE IN COMPRESSED ELEMENTS OF STEEL FRAMES","authors":"Myron Hоhоl, M. Kotiv, I. Peleshko, Dmytro Sydorak","doi":"10.23939/jtbp2021.02.024","DOIUrl":"https://doi.org/10.23939/jtbp2021.02.024","url":null,"abstract":"The article is devoted to the regulation of the stress-strain state in the compressed elements of steel frames under full operating load. It is proposed to perform reinforcement of such elements with different end eccentricities of load application by rational regulation of the stress-strain state in the reinforcement elements. It is shown that the use of SDS adjustment for frame racks increases their bearing capacity and reduces deformability and welds. The new proposed technology of SDS regulation and possible constructive decisions are offered. Numerical experiment revealed high efficiency of application of the proposed solutions during the reconstruction and reinforcement of the metal frame system. The implementation of the proposed method of SDS regulation confirmed its effectiveness.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129534922","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}
Pub Date : 2021-12-15DOI: 10.23939/jtbp2021.02.001
R. Tytarenko, R. Khmil, I. Dankevych
The article presents a theoretical analysis of existing concepts to evaluate the non-failure of RC structures in operation. To perform the analysis, the authors considered a number of scientific works of both Ukrainian and foreign researchers. The main focus was on works in which the model of the stochastic nature of the RC structure operation included random parameters of acting loads, as well as the reserve of its bearing capacity and serviceability (geometric dimensions of cross sections of constructive members, strength and deformation characteristics of materials, etc.). Among others, according to the authors, important problems in terms of analysis of a single work were the volume of statistical selection of random parameters, their number and impact on the study result, as well as rationality of the adopted method of calculating the probability of failure (or non-failure work) of RC structure in operation. Based on the processing of a number of scientific works, the authors highlight the relevance, advantages and disadvantages of the concepts of non-failure assessment proposed there, as well as the formulate the conclusions and recommendations for further experimental and theoretical research in this area.
{"title":"THEORETICAL ANALYSIS OF EXISTING CONCEPTS TO EVALUATE THE NON-FAILURE OF RC STRUCTURES IN OPERATION","authors":"R. Tytarenko, R. Khmil, I. Dankevych","doi":"10.23939/jtbp2021.02.001","DOIUrl":"https://doi.org/10.23939/jtbp2021.02.001","url":null,"abstract":"The article presents a theoretical analysis of existing concepts to evaluate the non-failure of RC structures in operation. To perform the analysis, the authors considered a number of scientific works of both Ukrainian and foreign researchers. The main focus was on works in which the model of the stochastic nature of the RC structure operation included random parameters of acting loads, as well as the reserve of its bearing capacity and serviceability (geometric dimensions of cross sections of constructive members, strength and deformation characteristics of materials, etc.). Among others, according to the authors, important problems in terms of analysis of a single work were the volume of statistical selection of random parameters, their number and impact on the study result, as well as rationality of the adopted method of calculating the probability of failure (or non-failure work) of RC structure in operation. Based on the processing of a number of scientific works, the authors highlight the relevance, advantages and disadvantages of the concepts of non-failure assessment proposed there, as well as the formulate the conclusions and recommendations for further experimental and theoretical research in this area.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128635833","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}
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