Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost最新文献_第3页

Monitoring of effects, caused by the anthropogenic factors of the municipal economy functioning, on the occurrence of floods and groundwater flooding 监测城市经济运行中的人为因素对洪水和地下水泛滥的影响

Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost Pub Date : 2024-04-06 DOI: 10.21285/2227-2917-2024-1-105-118

E. Tshovrebov, U. Niyazgulov, E. B. Sergeev, Yu V. Prus

{"title":"Monitoring of effects, caused by the anthropogenic factors of the municipal economy functioning, on the occurrence of floods and groundwater flooding","authors":"E. Tshovrebov, U. Niyazgulov, E. B. Sergeev, Yu V. Prus","doi":"10.21285/2227-2917-2024-1-105-118","DOIUrl":"https://doi.org/10.21285/2227-2917-2024-1-105-118","url":null,"abstract":"The article considers topical issues of preventing environmental hazards during the functioning of urban economy system as a factor for the occurrence and development of natural emergencies – freshets and groundwater flooding. The study aims to form a configuration of a comprehensive monitoring system for making reasonable organisational, technical and managerial decisions on the prevention of emergencies with dangerous environmental consequences. The objective of the study was to investigate proposals for the creation of such a system using an example of specific natural emergencies: floods, groundwater flooding and freshets, caused by anthropogenic activities, associated with the functioning of human settlements. The object of the study includes freshets and floods in terms of natural emergencies. The subject of the study involves a set of factors, conditions, parameters and restrictions, affecting the occurrence and development of floods, groundwater flooding and freshets. The research methodology is based on the application of a system analysis to factors, functioning parameters, conditions, restrictions, cause-and-effect relationships of technogenic events and natural phenomena, leading to the occurrence and passage of groundwater flooding and floods as a natural emergency with environmentally hazardous consequences. Using the study of anthropogenic causes of floods and groundwater flooding, this paper presents proposals for the organisation of a system for integrated monitoring of urban areas in order to timely prevent, identify and mitigate adverse events, hazards, threats, risks and potential consequences for the infrastructure of urban economy and population vital activity.","PeriodicalId":512612,"journal":{"name":"Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost","volume":"19 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140734929","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}

引用次数: 0

Calculation for non-pressure sewage systems taking into account the irregularity of wastewater inflow from subscribers 考虑到用户废水流入的不规则性，对非压力污水系统进行计算

Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost Pub Date : 2024-04-06 DOI: 10.21285/2227-2917-2024-1-133-148

V. R. Chupin, M. Moroz

{"title":"Calculation for non-pressure sewage systems taking into account the irregularity of wastewater inflow from subscribers","authors":"V. R. Chupin, M. Moroz","doi":"10.21285/2227-2917-2024-1-133-148","DOIUrl":"https://doi.org/10.21285/2227-2917-2024-1-133-148","url":null,"abstract":"Sewerage systems are calculated according to the conditions of their operation in the mode of steady uniform wastewater flow. However, this mode is only likely to occur when the wastewater received from subscribers has a constant flow rate during the day. This, in turn, is possible if each subscriber has a regulating tank that ensures an average flow rate. Unfortunately, the established standards do not provide for such containers and, obviously, they are very expensive. Therefore, the wastewater nonuniformly enters the sewerage and nonuniformly flows through pipelines and gravity sewers. The presented work aims to model such modes of flow motion based on the particle method. The particle method is based on a graphical solution of the continuity equation (matter conservation) and the momentum conservation equation (motion). Numerical experiments performed using the particle method showed that flow rate, speed, and depth vary as wastewater moves, and they have a wave character. Knowledge of such modes is important to effectively organize the operation of gravity sewers, receiver tanks of pumping stations and treatment plants. Based on the proposed models, one can study the transfer of suspended solids and changes in the biochemical composition of wastewater. Moreover, the models can be used to calculate the storage capacity of gravity sewers.","PeriodicalId":512612,"journal":{"name":"Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost","volume":"5 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140735534","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}

引用次数: 0

Condition classification of sewerage systems according to the deposit layer thickness in the bench part of pipes 根据管道台阶部分的沉积层厚度对下水道系统的状况进行分类

Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost Pub Date : 2024-04-06 DOI: 10.21285/2227-2917-2024-1-96-104

O. Prodous, D. Shlychkov, A. Chelonenko

{"title":"Condition classification of sewerage systems according to the deposit layer thickness in the bench part of pipes","authors":"O. Prodous, D. Shlychkov, A. Chelonenko","doi":"10.21285/2227-2917-2024-1-96-104","DOIUrl":"https://doi.org/10.21285/2227-2917-2024-1-96-104","url":null,"abstract":"The article aims to classify the condition of sewerage systems made of different materials and having different diameters with a build-up of deposits in the bench part; this analysis is based on their televising and analyzing the values of hydraulic characteristics. The analysis of televising data and the hydraulic potential of pipes establishes the class of a pipeline having internal deposits, which is used to decide on the continuation of operation, the need for preventive measures, including mechanical or hydrodynamic cleaning of the system, or the method of its reconstruction. Noteworthy is that by determining the hydraulic efficiency factor of sewerage systems with different deposit layer thicknesses in the bench part of pipes, a range of this coefficient can be established (in tabular form), which, regardless of the diameter and type of pipe materials, can be used to make a decision on continuing further operation, carrying out preventive measures (mechanical or hydrodynamic cleaning), or removing it from service for reconstruction. Also, recommendations are provided on the possibility of continuing or discontinuing the operation of wastewater pipelines with internal deposits. It is proposed to classify the operating condition of sewer pipelines with deposits in the bench part to make decisions on the need for restoring the throughput capacity, reconstruction, or replacement of pipes.","PeriodicalId":512612,"journal":{"name":"Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140734946","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}

引用次数: 0

Soviet industrial architecture projects by Nikolay Boykov from the early 20th century 尼古拉-博伊科夫 20 世纪初的苏联工业建筑项目

Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost Pub Date : 2024-04-06 DOI: 10.21285/2227-2917-2024-1-183-199

I. Druzhinina

{"title":"Soviet industrial architecture projects by Nikolay Boykov from the early 20th century","authors":"I. Druzhinina","doi":"10.21285/2227-2917-2024-1-183-199","DOIUrl":"https://doi.org/10.21285/2227-2917-2024-1-183-199","url":null,"abstract":"The article aims to study partially or completely lost industrial facilities designed by Nikolay Boykov and built in the 1920s in the Irkutsk Region that represent historical, cultural, and architectural value. In the work, such methods as retrospective analysis, historical reconstruction, and cluster analysis were used. The retrospective analysis was applied to study the territories of industrial facilities, which were occupied by some structures prior to Nikolay Boykov’s involvement; the architect’s contribution to the construction of new buildings and reconstruction of existing structures was ascertained; the design and construction time frames of Nikolay Boykov’s projects were revised. The cluster analysis revealed some quantitative and qualitative characteristics of three main industrial facilities that were designed by the architect under the conditions of modernization and new construction. The study of the years of Boykov’s activity revealed stages in the construction and reconstruction of industrial facilities (“Sibiromongol” leather factory, CPS-2, and Khaitinsky porcelain factory), and identified buildings that were most likely to have been designed with his involvement. The present author used archival documents and open sources to reconstruct and prepare layout plans of workshops at the “Sibiromongol” leather factory and Khaitinsky porcelain factory during the years of Boykov’s activity. The study of these facilities showed the value of the considered projects, the necessity of preserving the deteriorating structures that constitute a stratum of cultural, architectural, and historical development of industrial facilities from the early 20th century in Russia.","PeriodicalId":512612,"journal":{"name":"Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140734318","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}

引用次数: 0

Urban planning factors in sustainable development of the territorial recreational system in Nizhneudinsky District of Irkutsk Oblast 伊尔库茨克州下诺乌金斯基区全域娱乐系统可持续发展的城市规划因素

Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost Pub Date : 2024-04-06 DOI: 10.21285/2227-2917-2024-1-161-171

D. V. Bobryshev, V. V. Usacheva

{"title":"Urban planning factors in sustainable development of the territorial recreational system in Nizhneudinsky District of Irkutsk Oblast","authors":"D. V. Bobryshev, V. V. Usacheva","doi":"10.21285/2227-2917-2024-1-161-171","DOIUrl":"https://doi.org/10.21285/2227-2917-2024-1-161-171","url":null,"abstract":"The article considers urban planning factors in the development of the territorial recreational system of Nizhneudinsky District (Raion) of Irkutsk Oblast from a standpoint of the infrastructure model of territorial planning. The study aims to formulate a concept for placing functional planning elements of recreation and tourism on the Nizhneudinsky District territory considering the existing spatial settlement structure. The main objectives of the study: to identify urban planning factors in the organization of territorial recreational systems; to analyze the initial situation and determine prospects for tourism and recreation development in Nizhneudinsky District; to develop a concept of spatial development of a territorial recreational system drawing on the example of Nizhneudinsky District. The analytical part of the research examines the main factors in planning territorial recreational systems and the existing recreational and tourist infrastructure of the district. The applied part of the research formulates the conceptual proposals for the territorial and systemic organization of the tourist and recreational network in Nizhneudinsky District. The result of the work is the schematic diagrams of the functional planning development of the Nizhneudinsky District territorial recreational system, as well as its constituent part Tofalariya.","PeriodicalId":512612,"journal":{"name":"Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost","volume":"42 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140735303","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}

引用次数: 0

Effect of Technical Safety Regulations on Form-Making in Russian Architecture on the Example of the Mountain Dwellings by BIG in Denmark 技术安全规定对俄罗斯建筑形式设计的影响--以丹麦 BIG 设计的山地住宅为例

Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost Pub Date : 2024-04-06 DOI: 10.21285/2227-2917-2024-1-216-228

M. B. Khadeev

{"title":"Effect of Technical Safety Regulations on Form-Making in Russian Architecture on the Example of the Mountain Dwellings by BIG in Denmark","authors":"M. B. Khadeev","doi":"10.21285/2227-2917-2024-1-216-228","DOIUrl":"https://doi.org/10.21285/2227-2917-2024-1-216-228","url":null,"abstract":"The article assesses the effect of technical regulations on form-making in Russian architecture. The first part describes an outstanding architectural object, the Mountain Dwellings in Copenhagen. It consists of a housing block and parking spaces located both under the residential part and on the same level as apartments. This arrangement is unusual and spectacular, while the apartments are comfortable. In Denmark, this solution is recognized as safe and environmentally friendly. The second part of this article considers this project from the perspective of Russian building codes and regulations. Certain fire and sanitary regulations are shown to make such an architectural approach impossible or, to be more precise, dictate only standard design solutions. The Russian construction industry is over-regulated, restricting architects from creating new design solutions that are acceptable in Denmark. In addition, a large number of architectural solutions used in global construction cannot be realized or are difficult to implement under our conditions. Russian architects are denied many of the tools to create expressive space and form. It seems necessary to involve architects in the validity analysis and development of building codes.","PeriodicalId":512612,"journal":{"name":"Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost","volume":"27 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140734456","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}

引用次数: 0

Theoretical justification for the choice of technical solutions for microclimate support systems of indoor ice rinks 室内溜冰场微气候支持系统技术方案选择的理论依据

Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost Pub Date : 2024-04-06 DOI: 10.21285/2227-2917-2024-1-119-132

S. Chuykin, O. A. Kutsygina

{"title":"Theoretical justification for the choice of technical solutions for microclimate support systems of indoor ice rinks","authors":"S. Chuykin, O. A. Kutsygina","doi":"10.21285/2227-2917-2024-1-119-132","DOIUrl":"https://doi.org/10.21285/2227-2917-2024-1-119-132","url":null,"abstract":"The specific character of ensuring the microclimate of indoor ice rinks and ice arenas consists in creating temperature and humidity conditions which prevent fog formation at the ice surface, deterioration of its mechanical properties, and condensation on building structures and auxiliary facilities. The article aims to theoretically justify the choice of an air exchange scheme in the ice arena zone, as well as to propose a design of the central air conditioner that implements the suggested air exchange method. As a result, the energy requirement for air handling can be reduced. The article proposes methods for air exchange organization contributing to the achievement of the required characteristics and parameters. Employing these methods also results in many options of air mass handling schemes and the layout of central air conditioners. The principles of organizing air exchange in the ice arena zone were formulated. They include supplying incoming air with concentrated airstreams directed at an angle or vertically downward from the upper zone of indoor ice rinks and ice arenas and removing exhaust air from the upper or maintenance areas. The Id-diagram shows layout options of equipment sections for central air conditioners and the sequence of humid air handling processes according to the following schemes: top-up, top-down, and mixed. These schemes characterize differences in energy consumption, as well as cost indicators for equipment and operation, which determines the multifactorial and multicriteria nature of selecting a design option under uncertainty. Based on the analysis of the research results with respect to the discounted cost criterion, the choice of the mixed scheme for organizing air exchange is theoretically substantiated. Moreover, the study determines the area of economic feasibility of the selected option.","PeriodicalId":512612,"journal":{"name":"Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost","volume":"42 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140733842","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}

引用次数: 0

Development of measures to modernize the heating system in ESSUTM academic building No. 7 and evaluation of economic efficiency 制定 ESSUTM 7 号教学楼供暖系统现代化措施并评估经济效益

Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost Pub Date : 2024-04-05 DOI: 10.21285/2227-2917-2024-1-30-45

O. B. Ayurova, E. M. Badashkeeva, A. B. Tsybenova, V. B. Tsybenov, V. I. Tankov

{"title":"Development of measures to modernize the heating system in ESSUTM academic building No. 7 and evaluation of economic efficiency","authors":"O. B. Ayurova, E. M. Badashkeeva, A. B. Tsybenova, V. B. Tsybenov, V. I. Tankov","doi":"10.21285/2227-2917-2024-1-30-45","DOIUrl":"https://doi.org/10.21285/2227-2917-2024-1-30-45","url":null,"abstract":"The present work is aimed at analyzing the heating system operation in academic building No. 7 and developing measures to modernize this system with an evaluation of economic efficiency. The analysis involved a thermal analysis of exterior wall envelopes, an on-site inspection of the heating system, as well as measurements of internal microclimate parameters and thermal imaging. Heat losses in rooms were calculated, and a verification hydraulic analysis of the heating system was performed. The inspection revealed deficiencies in the operation of the existing heating system, and two options for modernization measures were developed to address these deficiencies. The first option consists in adjusting the system (removing and adding sections; replacing window seals; replacing piping with that of a different diameter; installing manual balancing valves on risers and branches; installing a pump on the return piping; installing closing sections). The second option involves major repairs and includes additional measures (in addition to those specified above) to insulate the attic flooring and end walls of the building, which can reduce heat losses by 25 %. For both options, automated heating substation equipment was selected. In addition, costs were estimated, economic efficiency was evaluated, and payback periods for each measure were determined. The on-site inspection of exterior wall envelopes and the heating system, as well as measurement of microclimate parameters, provided a means to develop measures to modernize the heating system of academic building No. 7 and evaluate economic efficiency.","PeriodicalId":512612,"journal":{"name":"Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost","volume":"25 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140736589","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}

引用次数: 0

Housing construction management: practical aspects of digital intelligent support (on the example of the Aviator housing development, Irkutsk) 住房建设管理：数字智能支持的实践方面（以伊尔库茨克市 "飞行员 "住房开发项目为例）

Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost Pub Date : 2024-04-05 DOI: 10.21285/2227-2917-2024-1-70-81

A. V. Korolek, M. Matveeva, A. V. Peshkov

{"title":"Housing construction management: practical aspects of digital intelligent support (on the example of the Aviator housing development, Irkutsk)","authors":"A. V. Korolek, M. Matveeva, A. V. Peshkov","doi":"10.21285/2227-2917-2024-1-70-81","DOIUrl":"https://doi.org/10.21285/2227-2917-2024-1-70-81","url":null,"abstract":"The article considers the practical aspects of digital intelligent support for managing housing construction using the example of the construction management of the Aviator housing estate in Irkutsk (the developer is the Novy Gorod business group). Digital intelligent support enables one to automate and remotely manage the processes of organizing housing construction through taking the most effective decisions promptly. This gives an opportunity to increase the reliability of the housing construction management system. The article highlights the application of optimization algorithms to organizing housing construction. With the integration of systems analysis, organizational, information, and mathematical modeling, it becomes possible to optimize decisions made for all resource types, the duration of production processes, and the construction of the entire object. All these enhance the management system for organizing housing estate construction in terms of quality, reliability, and efficiency. The article addresses the issues of control over the organization and implementation of housing construction stages and priorities using the example of the Aviator housing complex. In general, using the digital intelligent support potential impacts on the economic performance indicators of the organization for the object under study at the construction stage proper.","PeriodicalId":512612,"journal":{"name":"Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost","volume":"21 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140738254","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}

引用次数: 0

Comparison of the effectiveness of microsilica modification of lightweight concretes with coarse aggregates from various rocks 比较用不同岩石的粗集料对轻质混凝土进行微硅改性的效果

Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost Pub Date : 2024-04-05 DOI: 10.21285/2227-2917-2024-1-82-95

A. B. Paskachev, T. G. Rzhevskaya, S. Stel’makh, E. Shcherban’, L. D. Mailyan, A. L. Mailyan

{"title":"Comparison of the effectiveness of microsilica modification of lightweight concretes with coarse aggregates from various rocks","authors":"A. B. Paskachev, T. G. Rzhevskaya, S. Stel’makh, E. Shcherban’, L. D. Mailyan, A. L. Mailyan","doi":"10.21285/2227-2917-2024-1-82-95","DOIUrl":"https://doi.org/10.21285/2227-2917-2024-1-82-95","url":null,"abstract":"A promising line of research in construction science and practice is the creation of lightweight concretes. They exhibit the so-called strength-density ratio, i. e. a relative characteristic between the strength and weight of the resulting concrete. This ratio simultaneously reflects the maximum possible weight reduction of the structure and its operational reliability. The research aims to compare the effectiveness of microsilica modification of lightweight concretes produced with coarse aggregates from various rocks. The study analyzed the existing scientific literature on lightweight concretes, their formulations, technology, and scientific validity, as well as the structural compatibility of the components used. A comparison was made of the effectiveness of lightweight concrete modification for various formulation technological parameters. The strength of modified lightweight concrete and its strengthdensity ratio changed significantly compared to unmodified lightweight concrete. The strongest effect is achieved when using lightweight granite concrete modified with 9 % of microsilica. As a result, the maximum compressive strength was 55.9 MPa, and the strength-density ratio was 24.3•10-3 MPa•m3/kg compared to other studied concrete compositions. The increase in compressive strength was 17.2 % compared to unmodified lightweight concrete. The strength-density ratio increased by 19.1 % compared to unmodified coarse dense aggregate concrete.","PeriodicalId":512612,"journal":{"name":"Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost","volume":"16 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140738055","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}

引用次数: 0