75504 2712-8172 Magazine of Civil Engineering 8 92 2019 1-172
RAR RUS 3-26 25637856200 0000-0003-4513-809X Kyiv State Technical University of Construction and Architecture Yurchenko Vitalina vitalinay@rambler.ru
Kyiv, Ukraine
 Algorithm for shear flows in arbitrary cross-sections of thin-walled bars Development of a general computer program for the design and verification of thin-walled bar structural members remains an actual task. Despite the prevailing influence of normal stresses on the stress-strain state of thin-walled bars design and verification of thin-walled structural members should be performed taking into account not only normal stresses, but also shear stresses. Therefore, in the paper a thin-walled bar of an arbitrary cross-section which is undergone to the general load case is considered as investigated object. The main research question is development of mathematical support and knoware for numerical solution for the shear stresses problem with orientation on software implementation in a computer-aided design system for thin-walled bar structures. The problem of shear stresses outside longitudinal edges of an arbitrary cross-section (including open-closed multi-contour cross-sections) of a thin-walled bar subjected to the general load case has been considered in the paper. The formulated problem has been reduced to the searching problem for unknown shear forces flows that have the least value of the Castigliano’s functional. Besides, constraints-equalities of shear forces flows equilibrium formulated for cross-section branch points, as well as equilibrium equation formulated for the whole cross-section relating to longitudinal axes of the thin-walled bar have been taken into account. A detailed numerical algorithm intended to solve the formulated problem has been proposed by the paper. The algorithm is oriented on software implementation in systems of computer-aided design of thin-walled bar structures. Developed algorithm has been implemented in SCAD Office environment by the program TONUS. Numerical examples for calculation of thin-walled bars with open and open-closed multi-contour cross-sections have been considered in order to validate developed algorithm and verify calculation accuracy for sectorial cross-section geometrical properties and shear stresses caused by warping torque and shear forces. Validity of the calculation results obtained using developed software has been proven by considered examples. 10.18720/MCE.92.1 thin-walled bar arbitrary cross-section shear forces flow closed contour graph theory numerical algorithm numerical examples software implementation https://engstroy.spbstu.ru/article/2019.92.1/
RAR RUS 27-35 South Ural State University Nikonorov Vladislav vladislav50595@yandex.ru
Chelyabinsk, Russia
 South Ural State University Nikonorova Daria evs95@inbox.ru
Chelyabinsk, Russia
 7003469924 South Ural State University Pikus Grigorii pikusga@susu.ru
Chelyabinsk, Russia
 Thermophysical properties of the soil massif Calculations show that a significant percent of the heat losses of monolithic foundations consists of heat loss to the ground from concrete during construction. Therefore, ignoring heat losses to the ground (i.e., taking into account only the formwork and thermal insulation) leads to significant deviations between calculated and actual technological parameters. The existing methods for calculating the coefficient of heat transfer of enclosures are not suitable when calculating this same parameter for soil massifs. While finite thicknesses are used in this calculation for enclosures, thickness is infinite for soil massifs. To create a method for calculating heat losses to the ground, we solved a differential equation of heat conduction using integral transform methods. In the classical theory of heat transfer, for any material of finite thickness, the heat transfer coefficient is constant over time. However, for an array of soil, this parameter varies depending on period of time during which concrete loses heat to the soil. At the same time, the heat transfer coefficient increases with increasing soil density, which is explained by the growing contact area between particles in a unit volume of soil. Thus, the surface area through which the heat flux moves also increases. The article presents the results of the finite element calculation in the simulation software ELCUT, confirming the reliability of the obtained analytical dependencies. 10.18720/MCE.92.2 heat transfer heart flow soil property temperature mathematical modeling https://engstroy.spbstu.ru/article/2019.92.2/
RAR RUS 36-47 0000-0002-1763-6190 Universiti Teknologi Malaysia Adewumi Adeshina adewumi@graduate.utm.my
Johor Bahru, Malaysia
 0000-0002-0264-6476 Universiti Teknologi Malaysia Ismail Mohammad mohammad@utm.my
Johor Bahru, Malaysia
 0000-0003-4644-0370 Universiti Teknologi Malaysia Ariffin Mohd Azreen mohdazreen@utm.my
Johor Bahru, Malaysia
 55902853200 0000-0002-8134-5435 University of Hafr Al Batin Yusuf Moruf moruf@uhb.edu.sa
Saudi Arabia
 0000-0002-9718-6766 King Fahd University of Petroleum and Minerals Maslehuddin Mohammad muddin@kfupm.edu.sa
Dhahran, Saudi Arabia
 0000-0001-9210-228X King Fahd University of Petroleum and Minerals Mohamed Hatim dmhatim@kfupm.edu.sa
Dhahran, Saudi Arabia
 Strength and microstructure of alkali-activated natural pozzolan and limestone powder mortar In this study, the synergistic effects of natural pozzolan (NP) and limestone powder waste (LSPW) alkaline activated mortar has been investigated using compressive strength and microstructure analysis. LSPW was added in varying percentages to alkaline activated NP such that the combined ratio (LSPW/(LSPW + NP)) varied from (0 to 1) at the interval of 0.2. The activators used were sodium silicate (Na2SiO3(aq)) and sodium hydroxide (10M NaOH(aq)) combined as 1:1. The findings revealed that the synergistic effect of NP with LSPW emanated from silica and alumina required for the formation of aluminosilicate framework which required cation sourced from LSPW (Ca2+) for charge balancing in the formed skeletal framework. The products formed were mainly anorthite (CaAl2Si2O8) and gehlenite (CaO.Al2O3.SiO2). Besides, about 77 % of 28-days compressive strength (27 MPa) could be achieved in 24 h using heat curing. Microstructural analysis revealed that the rough texture of activated NP characterized with high porosity turned to be filled up by the presence of LSPW thereby improving the microstructural density. 10.18720/MCE.92.3 alkali-activated mortar natural pozzolan limestone powder microstructure aluminosilicate compressive strength https://engstroy.spbstu.ru/article/2019.92.3/
RAR RUS 48-62 6504446571 0000-0001-6981-7420 Jordan University of Science and Technology Al-Rousan Rajai rzalrousan@just.edu.jo
Irbid, Jordan
 0000-0001-9272-920X Jordan University of Science and Technology Abo-Msamh Isra’a iabomsamh@gmail.com
Irbid, Jordan
 Bending and torsion behaviour of CFRP strengthened RC beams In the construction industry, there is growing attention of using effective external strengthening techniques such as bonding of Carbon Fiber Reinforced Polymers (CFRP) composites onto the external deficient faces of the structural members due to their ease of installation, low invasiveness, high corrosion resistance, and high strength to weight ratio. As a result, the center of consideration of the majority of previously published studies was either only on the impact of fibers on the structural behavior of reinforced concrete elements or using CFRP composite as external strengthening for flexural or shear. The intent was to arrive at the vital CFRP strengthening technique that provides an effective increase in the flexural and shear strength while maintaining ductile failure mode. Therefore, this paper investigated the behavior of simply supported RC beams strengthened using CFRP and subjected to combined bending and torsion using Nonlinear Finite Element Analysis (NLFEA). Twenty-six models have been constructed and divided into six groups to scrutinize the effect of clear span to depth ratio; CFRP length; CFRP strip spacing; and CFRP depth. The results showed that the increase in the clear span to depth ratio as well as length of CFRP leads to a notable increase in the ductility and decreases the ultimate load. The models with zero spacing CFRP strips (Fully) showed a higher considerable effect than the models with strips wrapping. Furthermore, this enhancement was the highest for group six which contains the models with the highest CFRP depth. 10.18720/MCE.92.4 engineering materials science technology civil engineering structural concrete https://engstroy.spbstu.ru/article/2019.92.4/
RAR RUS 63-75 https://orcid.org/0000-0003-2429-6777 National Research Ogarev Mordovia State University Levsev Alexey levtzevap@mail.ru
Saransk, Russia
 National Research Ogarev Mordovia State University Lapin Evgeniy evgeniy-lapin@yandex.ru
Saransk, Russia
 Jiangsu University Zhang Qianwen 543785883@qq.com
Zhènjiāng, China
 Increasing the heat transfer efficiency of sectional radiators in building heating systems In heating systems of residential and public buildings, the sectional radiators are widely used as heating devices, where its heat transfer efficiency critically decreases, when the heat-carrying agent’s temperature lowered. At the same time, in order to increase the heat transfer efficiency of heat-exchange equipment, the positive experience of using the pulse flows is known. The heat supply method proposed in the process of the work performing, which consists in periodic supply of hot and cold heat-carrying agent through the sectional radiators. Thermal tests of 12 sectional radiators Rifar BASE 500 type at the temperatures from 42 °C to 67 °C and pulsation frequencies of the heat-carrying agent from 0.52 Hz to 0.62 Hz, showed an increase in their efficiency at the nominal flow rate of 1.8–2.2. With an increase in the flow rate and temperature of the heat-carrying agent, the SR efficiency decreases in a pulsating mode. The study of the SR efficiency from the parameters of the heating system and their switching circuit was carried out on a mathematical model in the form of energy chain that takes into account the mass and storage capacity of the heat-carrying agent. For a parallel connection up to 10 SR, the optimal circular frequency of the heat-carrying agent pulsations was 3 rad/s, and for a serial connection it was 4.2 rad/s, which is consistent with the results of thermal tests at the level of 7 %. 10.18720/MCE.92.5 heat supply method heating radiators heat-transfer efficiency heat-carrying agent pulsation membrane pump heating unit https://engstroy.spbstu.ru/article/2019.92.5/
RAR RUS 76-83 56426211200 0000-0002-3541-0072 Peter the Great Saint Petersburg Polytechnic University Petrichenko Mikhail fonpetrich@mail.ru
Polytechnicheskay, 29
 AAU-2845-2020 57204362749 0000-0002-6289-325X Peter the Great St. Petersburg Polytechnic University Sergeev Vitaliy vicerector.sc@spbstu.ru
St. Petersburg, Russia
 56227381900 0000-0003-2673-4566 Peter the Great Saint Petersburg Polytechnic University Nemova Darya darya.nemova@gmail.com
Polytechnicheskay, 29
 Peter the Great St. Petersburg Polytechnic University Kotov Evgeny ekotov.cfd@gmail.com
St. Petersburg, Russia
 Peter the Great Saint Petersburg Polytechnic University Andreeva Darya tarasovads@gmail.com
Polytechnicheskay, 29
 CFD simulation of the convective flows in the vertical caverns The purpose of this paper is determination the critical geometric dimensions of a three-dimensional vertical heated cavern. In this rate the convection's contribution to heat transfer will be limited due to thermal conductivity at a fixture temperature drop. The model validated and verified by comparison with the experimental results. А stable non-stationary flow regime is observed for Rayleigh number Ra = 15,000, because the temperature fields in different cross-sections of the flow coincide. For the flow with Rayleigh number Ra = 15,000, the nonstationary formulation without the turbulence model did not give the required convergence on residuals. So it was calculated by using the three-dimensional RANS approach closed with the k-w SST turbulence model. In this case the flow is unstable in the third direction, therefore it is impossible to consider the cavern as a heat insulator at numbers Ra = 10,000 and above. 10.18720/MCE.92.6 average velocity building and construction CFD civil and structural engineering enclosing structure energy efficiency heat-gravitational motion CFD simulation computational fluid dynamics simulations residential building https://engstroy.spbstu.ru/article/2019.92.6/
RAR RUS 84-95 0000-0002-4577-8794 Petersburg State Transport University Belash Tatiana belashta@mail.ru 0000-0001-5022-8669 Petersburg State Transport University Ivanova Zhanna syrmava@mail.ru
St. Petersburg, Russia
 Timber frame buildings with efficient junction designs for earthquake-prone areas The object of the study is a timber building of frame type, consisting of timber vertical posts, lower and upper binding, a system of connections (horizontal and vertical), elements of overlap and coating (roof). The impact of an earthquake of different intensity and frequency on the seismic resistance of a timber building is considered. Seismic stability was assessed on the basis of experimental and theoretical studies. Experimental methods were performed on laboratory facilities and large-scale models. Taking into account the experimental data obtained, the calculation and theoretical evaluation of the frame building on simple and complex models under the influence of different intensity and frequency composition was performed. It is established that the frequency composition of seismic impact significantly affects the seismic resistance of frame buildings. It is recommended when designing these buildings to assign their dynamic parameters (period of natural oscillations) depending on the forecast of the prevailing period of seismic oscillations of the construction area, which will more effectively solve the layout of the nodal joints of the frame. It is recommended to introduce additional materials and devices having pliability and high dissipative properties into nodal connections. 10.18720/MCE.92.7 low-rise buildings timber structures earthquake resistance timber frame buildings design and experimental studies https://engstroy.spbstu.ru/article/2019.92.7/
RAR RUS 96-105 57195684636 0000-0001-8800-2657 Voronezh State Technical University Slavcheva Galina gslavcheva@yandex.ru 57193760645 0000-0002-4701-3840 Karaganda State Technical University Baydjanov Djumageldy BDO3@yandex.ru 0000-0002-9251-1419 Karaganda State Technical University Khan Maxim han_maks@mail.ru
Karaganda, Republic of Kazakhstan
 Voronezh State University of Architecture and Civil Engineering Shvedova Maria marishwedowa@mail.ru
Voronesh, Russia
 https://orcid.org/0000-0002-6504-8799 Karaganda State Technical University Imanov Yedil e.imanov91@mail.ru
Karaganda, Republic of Kazakhstan
 Сlinkerless slag-silica binder: hydration process and hardening kinetics The article discusses the results of experimental studies comply with modern approaches to the production of high-performance clinkerless binder in order to ensure the possibility of obtaining high-strength composites based on them, hardening under normal temperature and humidity conditions, with-out heat treatment. The binder, belonging to the class slag-alkaline binders, was obtained by grinding all components together in the presence of superplasticizers and a high content of silica fume. The laser granulometry method, XRD – method were used to estimate the particle size, phase composition of the original components and the clinkerless binder. The flocculation and hardening kinetics was evaluated by the penetrometric method and mechanical tests. The data of the phase composition change of the binder, plastic strength, features of mechanical behavior at different stages of hardening are obtained. As a result, the distinctive features of the main periods of heterogeneous processes of structure formation of the resulting binder are revealed. It was found that the high content of microsilica and particles with a diameter of d ~ 1 ÷ 6 μm in the composition of clinkelrss binder, activated during grinding, allowed to increase their hydraulic activity. As a result, the speed of clinkelrss binder setting and hardening under normal temperature and humidity conditions corresponds to the speed of these processes for Portland cement. Setting rate and strength characteristics of clinkerless slag-silica binder meet the requirements for physical and mechanical properties of cement class 32.5 according to EN 197-1: 2000. 10.18720/MCE.92.8 clinkerless binder industrial waste hydration flocculation hardening phase composition compressive strength https://engstroy.spbstu.ru/article/2019.92.8/
RAR RUS 106-114 57197681063 0000-0002-7521-5079 University of Zanjan Rahmani Hamid hrahmani@znu.ac.ir
Zanjan, Iran
 https://orcid.org/0000-0003-3975-6502 University of Zanjan Montazer Gheib Mohammad mohammmadmontazer.ci@gmail.com
Zanjan, Iran
 CO2 curing of hydrated lime modified pervious concretes This paper presents the effect of carbonation curing on the properties of hydrated lime modified pervious concretes. Also, CO2 absorption capacity (COAC) of the mixtures was investigated to more explanation of the results. Three mix designs containing of 0, 15 and 30 % of hydrated lime were considered. Water to cement ratio, cementitious material content, inner pressure of the chamber and workability of the mixtures were kept constant. Concrete samples were cured in the CO2 chamber and then the conducted experiments were performed and the results compared with the results of moist cured concretes. The results showed a significant increase in the mechanical properties of the concretes at the initial time of CO2 curing. Carbonation reactions were approximately stopped after 12 hours of CO2 curing in which the concrete properties after 12 hours of CO2 curing were closed together. Also, COAC of the mixtures increased by increasing hydrated lime substitution. 10.18720/MCE.92.9 carbonation curing CO2 absorption hydrated lime pervious concrete https://engstroy.spbstu.ru/article/2019.92.9/
RAR RUS 114-125 0000-0003-1032-7173 Kazan State University of Architecture and Engineering Ilina Olga ilinaon@inbox.ru
Kazan, Russia
 0000-0002-6795-5034 Kazan State University of Architecture and Engineering Ilin Ignat ilinignat97@mail.ru
Kazan, Russia
 Road organo-mineral mixtures based on oil sludge Nowadays the development and implementation of modern construction technologies using oil wastes is gaining importance in road construction. Most of these wastes are stored in lagoons, which occupy vast territories, pollute the atmosphere, groundwater, soil and harm the environment. The purpose of the study is the development of organo-mineral mixtures composition based on oil sludge and technology for road construction with their application. The experimental research methods include the determination of strength, water resistance, water saturation, and swelling indicators of materials of various compositions. We also established optimal limits for factors variation that ensure the required reliability of the results. As a result of experimental studies we established that the optimal content of solid oil sludge in the composition of the developed materials is 30%, crushed stone –70% and the content of Portland cement is 6%. Physical and mechanical properties of the organic-mineral mixture based on oil sludge comply with regulatory requirements. During experimental and industrial implementation of the research results on4 experimental road sections we developed road pavement base construction technology of organo-mineral mixture based on oil sludge. It is performed by commercially available road-building machines with leading mechanisms recycler using the method called “mixing on the road”. We developed the operation schedule of oil sludge preliminary preparation at the special plant. Prepared oil sludge is a secondary raw product for road construction materials that is uniform in colour, grain composition, mass fraction of water and oil. Suggested modern technology for road pavement base construction allows making the oil sludge processing cycle absolutely complete and eliminates the formation of industrial by-products. This is an integral part of natural resources rational use and saving in material resources consumption. Technology application also contributes to the environment ecological state improvement in the areas of oil production and refining. 10.18720/MCE.92.10 oil sludge organo-mineral mixture road technology of road construction recycle https://engstroy.spbstu.ru/article/2019.92.10/
RAR RUS 127-141 57209803918 0000-0002-6056-5498 Peter the Great Saint Petersburg Polytechnic University Gerasimova Ekaterina katyageras17@gmail.com
St. Petersburg, Russia
 57194431559 0000-0003-4992-2084 Peter the Great Saint Petersburg Polytechnic University Galyamichev Alexander galyamichev@yandex.ru
Polytechnicheskay, 29
 NIUPTS «Mezhregional'nyy institut okonnykh i fasadnykh konstruktsiy» Mikhaylova Maria mmikhaylovaa@gmail.com
St. Petersburg, Russia
 0000-0003-4901-4967 Istanbul Okan University Dogru Selcuk seltrue@hotmail.com
Istanbul, Turkey
 Stress-strain state of a glass panel with adhesive point fixings The article is devoted to the study on the bearing capacity of the glazing with adhesive point fixings. This article provides evaluation of such factors as applied load, edge distance, panel thickness and number of point fixtures and their influence on stress-strain state of a glazing panel. Calculation of the panels under various conditions was performed by means of Finite Element Method (FEM). Results of the calculation show dependencies between considered factors and stress-strain state of a panel and present an overview of the on the possibilities of usage of such structures in accordance with Ultimate Limit State and Serviceability Limit State. 10.18720/MCE.92.11 adhesion adhesive joints glass stress concentration structural glass https://engstroy.spbstu.ru/article/2019.92.11/
RAR RUS 142-154 57216502974 0000-0002-2600-5526 Ondokuz Mayis University Dushimimana Aloys chenkodu432@gmail.com
Samsun, Turkey
 Shaoxing University Niyonseng Aude Amandine +8617858530159
Shaoxing, China
 Ondokuz Mayis University Decadjevi Gildas Jesuskpedji gildasdeca@gmail.com
Samsun, Turkey
 Pan African University Kathumbi Lilies Kathami lilieskath@gmail.com
Nairobi, Kenya
 Effects of model-based design and loading on responses of base-isolated structures Numerical studies for a structural dynamic system are performed in Matlab and Simulink environments. Six different earthquakes filtered and corrected using Seismosignal software, are used as seismic loads during implementation. In the first part of this study, the fourth order Runge-Kutta based Matlab code (RK4M) and Simulink Model-Based Design (SMD) are appropriately developed. Both RK4M and SMD are used to solve the governing equations for single storey structure isolated by Lead Core Rubber Bearing (LCRB). The second part compares the developed modelling methods in terms of outputs’ accuracy and Time of Implementation (TI). It is shown that both methods agree well in terms of resulting floor accelerations and displacements with slight but justifiable average differences of only 1.3 and 0.98 % respectively; thus, indicating that any of these techniques can be adopted. However, concerning TI, it is observed that SMD is in general quicker to display results as compared to the developed RK4M, which is approximately 58s longer. This leads to suggesting that SMD can be more effective, particularly for earthquakes with long-duration, and most importantly for cases where time is a governing factor during implementation. Besides, long-period and long-duration earthquakes are observed to have particular influence on structural behaviour. This reveals a need for special consideration requirements that are currently not taken into account. 10.18720/MCE.92.12 numerical methods dynamic loads time of implementation loading nature seismically isolated structures model-based design https://engstroy.spbstu.ru/article/2019.92.12/
RAR RUS 155-162 Southwest State University Kolchunov Vitaly asiorel@mail.ru 57196437054 0000-0002-5392-9150 National Research Moscow State Civil Engineering University Fedorova Nataliya fenavit@mail.ru
Moscow, Russia
 Southwest State University Savin Sergey suwin@yandex.ru Southwest State University Kovalev Vladislav slavutich_1991@mail.ru
Kursk, Russia
 Southwest State University Iliushchenko Tatiana tatkhalina93@yandex.ru
Kursk, Russia
 Failure simulation of a RC multi-storey building frame with prestressed girders In recent decades, more and more attention has been paid to studying the mechanisms of resistance to the progressive collapse of various types of buildings and structures. Wherein, one of the most common types of structural systems of multi-storey residential and public buildings is a reinforced concrete frame or reinforced concrete frame-braced system. The scientific literature contains the following mechanisms of resistance of such structural systems to progressive collapse: arch, catenary or Vierendeel truss. However, currently there is not strict correspondence between the type of structural system, the nature of the accidental impact and the resistance mechanisms to progressive collapse. A similar situation exists in the field of developing effective ways to ensure the structural safety of such frames in case of accidental impacts. Therefore, a multi-storey reinforced concrete frame braced structural system with prestressed girders was selected as the object of study in this work. The purpose of the study is thus to establish the resistance mechanism of the reinforced concrete frame with prestressed girders at the failure of an outer column on the ground floor of the building. For the purpose of this study, using the decomposition method, the substructure in the form of two-story two-span reinforced concrete frame has been cut from the 3D model of the structure under consideration and has been performed a nonlinear quasi static analysis of the finite element model of this substructure. As a result of nonlinear numerical analysis, the diagrams of the axial forces and moments and schemes of destruction have been obtained for different values of prestressing in the girders. It has been established that over failed outer column the reinforced concrete frame under consideration transforms to Vierendeel truss. Change of the level of prestressing in the girders of the frame allows varying the stress-strain state and ensures load-bearing capacity of its elements under accidental impacts. 10.18720/MCE.92.13 reinforced concrete precast and cast-in–place structures building frame prestressing progressive collapse numerical analysis accidental actions Vierendeel truss https://engstroy.spbstu.ru/article/2019.92.13/
RAR RUS 163-172 0000-0002-2716-2144 East Siberia state university of technology and management Urkhanova Larisa urkhanova@mail.ru
Ulan-Ude, Russia
 0000-0001-7077-8836 East Siberia state university of technology and management Buyantuev Sergey buyantuevsl@mail.ru
Ulan-Ude, Russia
 0000-0003-0690-1275 East Siberia State University of Technology and Management Urkhanova Ayuna technosfera@mail.ru
Ulan-Ude, Russia
 0000-0002-1399-2833 East Siberia state university of technology and management Lkhasaranov Solbon solbon230187@mail.ru
Ulan-Ude, Russia
 0000-0001-6103-3808 East Siberia State University of Technology and Management Ardashova Galina galya.ardashova1103@mail.ru
Ulan-Ude, Russia
 57199850188 0000-0002-2279-1240 Far Eastern Federal University Fediuk Roman roman44@yandex.ru
8. Suhanova St. Vladivostok, st. Octyabrskaya. 690950. Russia
 6701823730 0000-0003-0564-3307 Peoples' Friendship University of Russia Svintsov Alexandr svintsovap@rambler.ru 0000-0002-5299-8920 East Siberia State University of Technology and Management Ivanov Igor ivanova-2006@mail.ru
Ulan-Ude, Russia
 Mechanical and electrical properties of concrete modified by carbon nanoparticles The article presents the study of obtaining electrically conductive concrete using carbon nanoparticles obtained by processing coal in an electric-discharge plasma reactor. An electric-discharge method for producing a sedimentation-resistant and highly dispersed suspension consists in treating coal powder with an electric current in an aqueous medium. Using laser diffraction, it was found that carbon nanoparticles have a particle size in the range from 50 to 500 nm. The microstructure of hardened cement paste was studied using SEM. The compressive strength was tested on cubes with an edge of 100 mm according to EN 12390-6. Determination of the electrical resistance of concrete was carried out on specimens with an edge of 100 mm, placed between two brass plates, through which direct current was passed. The optimum content of carbon nanoparticles (0.01–0.1 % wt.) in the binder is evaluated, which allows to obtain high mechanical properties (30–35 % higher compressive strength compared to a control specimen. It is proved that the mechanism of action of nanoscale modifiers is most manifested in small doses. The dependences of the physicomechanical properties of Portland cement upon the addition of various amounts of carbon nanoparticles are determined. Physicomechanical and exploitation properties of heavyweight electrically conductive concrete are determined. The kinetics of changes in the electrical resistance of concrete at different curing periods is established. 10.18720/MCE.92.14 cements cement-based composites binders concretes carbon nanoparticles https://engstroy.spbstu.ru/article/2019.92.14/