This page has only limited features, please log in for full access.
One of the priority areas of modern construction production is the introduction of high-performance high-speed concrete with improved technological and construction-technical properties for the design, erection and repair of engineering structures. Modern studies have made it possible to view concrete from the nanoscale point of view as a material characterized by a complex hetero-scale structure of hydrated cement phases and mineral additives. The properties of concrete are determined by the type, size and nature of the interaction of the components of each structural level, which creates the possibility of nanotechnological regulation of the processes of structure formation and control of operational characteristics. The main task of nanomodification is to provide managed structure with more nanoscale hydration products. Typical nanowires in Portland cement systems are micro- and nanosilica SiO2, nanoglosses, TiO2, Al2O3, Fe2O3, CaCO3, carbon nanomaterials (carbon nanotubes and nanofibers). The introduction of C-S-H nanoparticles is the most effective way of accelerating the hydration of cement compared to other nanowires, by ensuring the growth of hydration products without an energy barrier in the pore space between the cement grains. The presented studies are devoted to the study of the nanomodification efficiency of concrete with a complex additive containing a polycarboxylate superplasticizer and synthesized nanoscale C-S-H particles. Based on the analysis of the results of early and design strength of nanomodified concrete, it is established that it is characterized by rapid strength gain and high durability after 28 days. The construction and technical properties of nanomodified concretes were investigated after 1 and 28 days of curing.
Justyna Sobczak-Piąstka; Uliana Marushchak; Oksana Mazurak; Andriy Mazurak. Nanomodified Rapid Hardening Concretes. IOP Conference Series: Materials Science and Engineering 2020, 960, 032058 .
AMA StyleJustyna Sobczak-Piąstka, Uliana Marushchak, Oksana Mazurak, Andriy Mazurak. Nanomodified Rapid Hardening Concretes. IOP Conference Series: Materials Science and Engineering. 2020; 960 (3):032058.
Chicago/Turabian StyleJustyna Sobczak-Piąstka; Uliana Marushchak; Oksana Mazurak; Andriy Mazurak. 2020. "Nanomodified Rapid Hardening Concretes." IOP Conference Series: Materials Science and Engineering 960, no. 3: 032058.
In recent years due to the introduction of computer technology in the process of calculating and conducting experiments the ability of researchers in the knowledge of various, accurate processes, including the nature of the work of concrete on the downstream branch of deformation significantly expanded. Modern methods of measurement allow to fix, for example, deformation, to an accuracy of 0.0001 mm, which allows deeper penetration into the essence of the phenomenon of destruction. Widespread are so-called 'hard' test machines in which the change in load is followed by a change in deformation in contrast to the traditional experiment when the load increases continuously up to a destructive value. Such machines allowed for the first time to show the exact type of the curve of 'stress – deformation' with the construction of a descending branch (plot of the diagram, going after the point of maximum load). An experiment was conducted to study the deformation of concrete simultaneously on two different presses with a hard loading mode and by increasing the loading. The analysis of the deformation of concrete prisms on these presses is carried out. A complete diagram of deformation of concrete has been constructed taking into account the descending area of concrete deformation. Comparing of the received data with the normative confirms the adequacy of the data received.
Justyna Sobczak-Piąstka; Yevhenij Babich; Sergij Filipchuk; Victor Karavan; Oleksandr Nalepa. Research of Deformative Properties of Concrete Taking into Account the Descending Branch of Deformation. IOP Conference Series: Materials Science and Engineering 2020, 960, 032057 .
AMA StyleJustyna Sobczak-Piąstka, Yevhenij Babich, Sergij Filipchuk, Victor Karavan, Oleksandr Nalepa. Research of Deformative Properties of Concrete Taking into Account the Descending Branch of Deformation. IOP Conference Series: Materials Science and Engineering. 2020; 960 (3):032057.
Chicago/Turabian StyleJustyna Sobczak-Piąstka; Yevhenij Babich; Sergij Filipchuk; Victor Karavan; Oleksandr Nalepa. 2020. "Research of Deformative Properties of Concrete Taking into Account the Descending Branch of Deformation." IOP Conference Series: Materials Science and Engineering 960, no. 3: 032057.
Construction organizations (contractors) perform works using process equipment subject to significant physical wear. This study report results of developing and using an analytical model and a computer tool used to plan the rational times for construction equipment replacement. Physical wear and breakdowns of construction equipment disrupt production processes and cause unexpected production pauses leading to loss of contractor's profit. In the article, the algorithm of equipment replacement planning is described. Computer model for a decision-making on the rational times for construction equipment replacement is developed using Visual Basic for Applications (VBA). The offered algorithm for decision-making on construction equipment replacement is based on the following assumptions: decision on equipment replacement is made at the end of the year; the amount of expenses for the general period is calculated by adding the expenses of each year. If during the relevant year the equipment is not replaced, the amount is composed only of loss of profit (depending on the equipment age). If during the year the equipment is replaced, the amount, in addition to the loss of profit for the current year, includes the cost of new equipment, reduced by the value of the liquidation value of the used equipment. The offered VBA macro for Excel has a benefit of showing several options. Decision-makers can consider the best options and choose one of them. A benefit of the offered algorithm implies obtaining several alternative plans of the rational times for equipment replacement. The use of this algorithm and the computer model is justified if the effect of the decisions made is higher than the additional expenses related to information collection (on the loss of contractor's profit and market value of the new and worn equipment).
Justyna Sobczak-Piąstka; Yevhen Matviyishyn; Yuriy Famulyak. Planning of Rational Terms of the Construction Equipment Replacement. IOP Conference Series: Materials Science and Engineering 2020, 960, 032059 .
AMA StyleJustyna Sobczak-Piąstka, Yevhen Matviyishyn, Yuriy Famulyak. Planning of Rational Terms of the Construction Equipment Replacement. IOP Conference Series: Materials Science and Engineering. 2020; 960 (3):032059.
Chicago/Turabian StyleJustyna Sobczak-Piąstka; Yevhen Matviyishyn; Yuriy Famulyak. 2020. "Planning of Rational Terms of the Construction Equipment Replacement." IOP Conference Series: Materials Science and Engineering 960, no. 3: 032059.
In the beginning of the XX century, political, economic, and demographic revolutions contributed to the emergence of extraordinary people. In architecture, they were Frank Lloyd Wright, Antonio Gaudí, Frank Owen Gary, Le Corbusier, Hugo Hering, Alvar Aalto, Hans Sharun, Walter Burley Griffin, and Marion Mahony Griffin. Each of them was given a lot of attention in the media resources and their creativity was researched in different fields of knowledge. However, Rudolf Steiner’s work remains controversial to this day. Although many of the architects mentioned above enthusiastically commented on Steiner’s architectural works, there was always ambiguity in the perception of this mystic architect. Such a careful attitude to the work of the architect is due primarily to his worldview, his extraordinary approach to art and architecture in particular, because it is in architecture that Steiner was able to implement the basic tenets of anthroposophy, which he founded. The purpose of this study is to determine the content of the spatial structure of Steiner’s architecture, which makes it unique in the history of architectural heritage. The authors offer the scientific community the first article in a series of articles on the anthroposophical architecture of Rudolf Steiner and the philosophical concept that influenced the formation of this architecture.
Romana Kiuntsli; Andriy Stepanyuk; Iryna Besaha; Justyna Sobczak-Piąstka. Metamorphosis of the Architectural Space of Goetheanum. Applied Sciences 2020, 10, 4700 .
AMA StyleRomana Kiuntsli, Andriy Stepanyuk, Iryna Besaha, Justyna Sobczak-Piąstka. Metamorphosis of the Architectural Space of Goetheanum. Applied Sciences. 2020; 10 (14):4700.
Chicago/Turabian StyleRomana Kiuntsli; Andriy Stepanyuk; Iryna Besaha; Justyna Sobczak-Piąstka. 2020. "Metamorphosis of the Architectural Space of Goetheanum." Applied Sciences 10, no. 14: 4700.
Wood is one of the most popular renewable natural materials. Nowadays, raw wood is hardly ever used in the construction industry. It has been substituted by glued laminated wood that is processed with the use of high-tech methods, thus eliminating the principal flaws and defects of the natural material. The deformability of glued laminated beams with combined reinforcement has been studied, under which the steel reinforcement of the periodic profile was placed in the dappings of the upper compressed zone, while ribbon-reinforced composite was glued to the bottom of the stretched zone. The graphical charts for the layer change of the deformations of wood, steel, and composite reinforcement from the beginning of the loading application to the moment of destruction are presented.
Justyna Sobczak-Piąstka; Svyatoslav Gomon; Mykola Polishchuk; Sviatoslav Homon; Petro Gomon; Victor Karavan. Deformability of Glued Laminated Beams with Combined Reinforcement. Buildings 2020, 10, 92 .
AMA StyleJustyna Sobczak-Piąstka, Svyatoslav Gomon, Mykola Polishchuk, Sviatoslav Homon, Petro Gomon, Victor Karavan. Deformability of Glued Laminated Beams with Combined Reinforcement. Buildings. 2020; 10 (5):92.
Chicago/Turabian StyleJustyna Sobczak-Piąstka; Svyatoslav Gomon; Mykola Polishchuk; Sviatoslav Homon; Petro Gomon; Victor Karavan. 2020. "Deformability of Glued Laminated Beams with Combined Reinforcement." Buildings 10, no. 5: 92.
Due to the energy crisis in Ukraine, the problem of significant increase in the efficiency of production, transportation and use of energy is of particular importance. Considering the significant role in energy supply of the country, the issues of efficient use of heat energy in all areas of these systems are solved: generation for heating water or for steam generation; transportation to the consumer, as well as when using it by the consumer. On the heat exchange surfaces of the systems, scale occurs, which leads to deterioration of heat and mass transfer processes and heat energy indices [6]. This affects the overall performance of the process. In this paper, the question of determining the parameters of an electromagnetic field in the process of treatment of pure water is solved and physical models of the change of the structure of pure water after treatment in the electromagnetic field and the change in the nature of its interaction with different surfaces are developed. To improve the efficiency of the system perform preliminary cleaning and softening water before feeding it to the heat pump by the method of processing it in fields of constant current and in the field of permanent magnets. Next, filtration and water treatment in the field of electromagnets with certain parameters of high frequency of electric current and field induction are carried out. The scientific principles of changes in structural and thermophysical properties of water, ecological and technical technologies, which include the implementation of its basic principles, in which environmental and anthropogenic factors perform a functionally unifying role, are developed.
Nataliia Zhuravska; Eduard Malkin; Justyna Sobczak-Piastka. Energy Efficient Processing of Geotermal Water for Energy-Heating Objects of the Building Industry. IOP Conference Series: Earth and Environmental Science 2019, 362, 012116 .
AMA StyleNataliia Zhuravska, Eduard Malkin, Justyna Sobczak-Piastka. Energy Efficient Processing of Geotermal Water for Energy-Heating Objects of the Building Industry. IOP Conference Series: Earth and Environmental Science. 2019; 362 (1):012116.
Chicago/Turabian StyleNataliia Zhuravska; Eduard Malkin; Justyna Sobczak-Piastka. 2019. "Energy Efficient Processing of Geotermal Water for Energy-Heating Objects of the Building Industry." IOP Conference Series: Earth and Environmental Science 362, no. 1: 012116.
The constant growth of the intensity and volumes of automobile transportation causes the necessity of the increasing the requirements to the serviceability of transport facilities. The issue of the serviceability and safe operation of the existing highway or pedestrian bridges, which were built many years ago, is always relevant. Therefore, there is a choice: either to restore and strengthen the existing facilities or to replace them completely. It is expedient and efficient to use a steel cut and stretchy sheet in the form of the external ribbon reinforcement at the strengthening of the reinforced concrete span bridge structures. In the future, the steel cut and stretchy sheet is properly attached to the surface of the structure and the filling of the sheet cell is done by the layer of the cement and sandy solution (the process of concrete spraying) or protected by a concrete layer for the prevention of the sheet corrosion. Such a cut and stretchy sheet can be effectively used in new structural elements at new construction as a working longitudinal or transversal reinforcement. An effective version of the use of the cut and stretchy sheet is possible for the strengthening not only bending structures but also compressed and compressed out of center reinforced concrete and stone ones. Thus, the issue of the research and modeling of the work of the steel cut and stretchy sheet in the array of concrete under the linear stressed state conditions is of vital importance. The article presents the results of the experimental and theoretical research of the work of the steel cut and stretchy sheet under load; provided the physical model of such a process; substantiates the effectiveness of its use and the placement in span beam bridge structures.
Sofiya Burchenya; Yuriy Famulyak; Justyna Sobczak-Piastka. Modelling of Work of Cut and Stretchy Sheet in Span Beam Structures with the Mixed Reinforcement. IOP Conference Series: Earth and Environmental Science 2019, 362, 012114 .
AMA StyleSofiya Burchenya, Yuriy Famulyak, Justyna Sobczak-Piastka. Modelling of Work of Cut and Stretchy Sheet in Span Beam Structures with the Mixed Reinforcement. IOP Conference Series: Earth and Environmental Science. 2019; 362 (1):012114.
Chicago/Turabian StyleSofiya Burchenya; Yuriy Famulyak; Justyna Sobczak-Piastka. 2019. "Modelling of Work of Cut and Stretchy Sheet in Span Beam Structures with the Mixed Reinforcement." IOP Conference Series: Earth and Environmental Science 362, no. 1: 012114.
The use of steel-concrete structures in which, external or extra-strong non-stressed sheet reinforcement are widely used in the stretched (sometimes in the compressed zone) in industrial construction as well as in the process of bridges and tunnels construction. Such structures are continuously thermal loaded during operation. Existing calculation methods of steel-concrete structures do not allow accurate estimation of the influence of freeze-thaw temperatures because there are contradictions considering this problem. The method of frost resistance calculating in Ukraine researches concrete cubes but it does not take into account the existence of reinforcement in the construction, its quantity and placement in the cross-section. This problem became even more relevant under conditions of Ukraine transition to the European design standards. According to the demand of the Eurocode the number of cross reinforcement in the back-up area is increased in comparison with national design standards. Single-span steel-concrete beams were manufactured and examined in order to determine the influence of freeze-thaw temperature on the constructions. Flat deformed reinforcement was adopted for the perception of tensile forces. To determine the strength characteristics of concrete, cubes and prisms were additionally made from the same concrete as the beams. To determine the freezing point of the beam and measure its internal temperature, 10 thermocouples were introduced into the beam's body. On the basis of the adopted research method a graph of the freezing rate of the experimental beams and the destructive influence of freeze-thaw temperature on the load-bearing capacity of the steel-concrete beams were obtained.
Yuriy Famulyak; Andriy Hrytsevych; Justyna Sobczak-Piastka. Influence of Freeze-Thaw Temperature on Load-Bearing Capacity of Steel-Concrete Beams Carrying Transverse Loads. IOP Conference Series: Earth and Environmental Science 2019, 362, 012115 .
AMA StyleYuriy Famulyak, Andriy Hrytsevych, Justyna Sobczak-Piastka. Influence of Freeze-Thaw Temperature on Load-Bearing Capacity of Steel-Concrete Beams Carrying Transverse Loads. IOP Conference Series: Earth and Environmental Science. 2019; 362 (1):012115.
Chicago/Turabian StyleYuriy Famulyak; Andriy Hrytsevych; Justyna Sobczak-Piastka. 2019. "Influence of Freeze-Thaw Temperature on Load-Bearing Capacity of Steel-Concrete Beams Carrying Transverse Loads." IOP Conference Series: Earth and Environmental Science 362, no. 1: 012115.
In in-service structural diagnostics, besides the monitoring of changes in physical properties of materials, it is essential to determine the dimensional stability of the structure as a whole. This is particularly important in the case of non-building structures exposed to variable and dynamic loading, such as overhead cranes, bridges, flyovers, telecommunications towers etc. Moreover, precise determination of the extent of deformation of structural elements allows for quick identification of any weak points or damaged areas which need to be further tested and assessed. The object of the analysis carried out in this article is a steel footbridge over the Brda River in Bydgoszcz. The main part of the structure stretching between the river banks comprises nine pin-jointed bridge decks suspended on pylons using steel cable stays. The jointed bridge decks make up the top slab. The structural design of the footbridge is simple and clear. The footbridge is rather susceptible to static loading and dynamic ambient excitations. The research involved displacement and strain gauge measurements of the footbridge subjected to a test load. The test loading was applied by moving a loaded hand truck along the centre line of the footbridge deck and stopping it at predefined locations on deck segments. Vertical displacements were measured for each load setting at selected specific points of the bridge and the strain of the cable stays was determined on the basis of the measured values of the displacement. Precise surveying technology was applied to measure the vertical displacement, enabling the location of control points with an accuracy of 0.25mm in three dimensions, whereas deformations and strains were determined using strain gauges. This article also includes an account of changes in the geometric features of the footbridge resulting from its long-term use. A simplified static load analysis of the load-bearing system of the footbridge was performed (2D model) with simulated test loads. The loads applied in the FEM model were equivalent to the load values determined through geodetic measurements. The developed model was then used to identify a displacement of control points. A comparison of the measurement results with the results of the numerical analysis revealed inconsistencies, both as regards vertical displacements of footbridge deck segments and cable stay strains. An attempt was made in the article to explain the differences.
Justyna Sobczak-Piąstka; Adam Bujarkiewicz; Tomasz Janiak; Jacek Sztubecki; Jaroslaw Gajewski. Analysis of Displacements and Deformations of a Steel Footbridge. IOP Conference Series: Earth and Environmental Science 2019, 221, 012096 .
AMA StyleJustyna Sobczak-Piąstka, Adam Bujarkiewicz, Tomasz Janiak, Jacek Sztubecki, Jaroslaw Gajewski. Analysis of Displacements and Deformations of a Steel Footbridge. IOP Conference Series: Earth and Environmental Science. 2019; 221 (1):012096.
Chicago/Turabian StyleJustyna Sobczak-Piąstka; Adam Bujarkiewicz; Tomasz Janiak; Jacek Sztubecki; Jaroslaw Gajewski. 2019. "Analysis of Displacements and Deformations of a Steel Footbridge." IOP Conference Series: Earth and Environmental Science 221, no. 1: 012096.
Foam concrete is classified as a lightweight concrete. It is a cement mortar in which air-voids are entrapped by a foaming agent. Its practical application is mainly limited to nonstructural material. For many years, the application of foam concrete has been limited to backfill of retaining walls, insulation of foundations, roof tiles and sound insulation. However, in the last few years foam concrete has become a promising material also for structural purposes. When the marginal loads are reached, all of alveolar concrete, included foam concrete, is destroyed without previous deformations. So, the main condition for the safe and reliable foam concrete use in structure elements is to increase its strength characteristics for short and long loads. Span constructive elements of foam concrete are performed as usual, reinforcement is ensured by a steel armature of a smooth or periodic profile. Experimental and theoretical research of comprehensive light concrete span elements and other types of reinforcement, their use in the methods of calculation, such as constructions with unconventional reinforcement, are not explored and used enough. One way to solve the problem is to replace conventional reinforcement by unconventional one (for example, organic or biological materials, different kinds of mesh). The results of experimental research of foam non-aerated concrete elements, the features of their work under the load are presented in this article. In this article, methods of increasing the strength of non-autoclave foam concrete using secondary waste are proposed. The results were compared with the results of tests of unreinforced elements.
Yuriy Famulyak; Justyna Sobczak-Piastka. Experimental Research of Non-Autoclaved Concrete with Unconventional Reinforcement. IOP Conference Series: Earth and Environmental Science 2019, 221, 012122 .
AMA StyleYuriy Famulyak, Justyna Sobczak-Piastka. Experimental Research of Non-Autoclaved Concrete with Unconventional Reinforcement. IOP Conference Series: Earth and Environmental Science. 2019; 221 (1):012122.
Chicago/Turabian StyleYuriy Famulyak; Justyna Sobczak-Piastka. 2019. "Experimental Research of Non-Autoclaved Concrete with Unconventional Reinforcement." IOP Conference Series: Earth and Environmental Science 221, no. 1: 012122.
This is the methodology over of research of concrete prisms that work on a compresion and tension, from the high-strength concretes of classes of С60 and higher with high early durability. The basic mechanical characteristics for these concrete have been determined. Basic deformation descriptions of diagrams of a mechanical state are established and the possibility of theoretical description of the deformation process is proved.
Yevhenij Babich; Sergij Filipchuk; Victor Karavan; Justyna Sobczak-Piąstka. Research of basic mechanical and deformative properties of high-strength fast-hardening concretes. AIP Conference Proceedings 2019, 2077, 020003 .
AMA StyleYevhenij Babich, Sergij Filipchuk, Victor Karavan, Justyna Sobczak-Piąstka. Research of basic mechanical and deformative properties of high-strength fast-hardening concretes. AIP Conference Proceedings. 2019; 2077 (1):020003.
Chicago/Turabian StyleYevhenij Babich; Sergij Filipchuk; Victor Karavan; Justyna Sobczak-Piąstka. 2019. "Research of basic mechanical and deformative properties of high-strength fast-hardening concretes." AIP Conference Proceedings 2077, no. 1: 020003.
The results of the bearing capacity and stress-strain behavior of bending complex steel concrete beams, reinforced with a steel cut and stretchy sheet and bar reinforcement, which is placed without a protective layer of concrete as well as with a protective layer of concrete, are provided and compared in the article. As a result of the conducted experiments, the reliability of the cut and stretchy sheet, as ribbon reinforcement, has been confirmed. From the beginning of loading and before destruction in any of the experimental samples, there were no violations of adhesion with concrete.
Sofiya Burchenya; Justyna Sobczak-Piąstka. The research of bearing capacity and stress-strain behavior of bending complex steel concrete beams. AIP Conference Proceedings 2019, 2077, 020010 .
AMA StyleSofiya Burchenya, Justyna Sobczak-Piąstka. The research of bearing capacity and stress-strain behavior of bending complex steel concrete beams. AIP Conference Proceedings. 2019; 2077 (1):020010.
Chicago/Turabian StyleSofiya Burchenya; Justyna Sobczak-Piąstka. 2019. "The research of bearing capacity and stress-strain behavior of bending complex steel concrete beams." AIP Conference Proceedings 2077, no. 1: 020010.
It is proposed the method of determining the stages of the stress-strain state of the elements for a pure transverse bend using a deformation model. ‘Calculated cross-section’ provides an opportunity to make an assumption regarding the shape of the stress diagram and its maximum ordinate in the cross-section in the compressed zone of the bending wood element.
Svyatoslav S. Gomon; Victor Karavan; Petro Gomon; Justyna Sobczak-Piąstka; Svyatoslav Gomon. Calculated cross-sectional model and stages of the stress-strain state of the wood element for transverse bending. AIP Conference Proceedings 2019, 2077, 020019 .
AMA StyleSvyatoslav S. Gomon, Victor Karavan, Petro Gomon, Justyna Sobczak-Piąstka, Svyatoslav Gomon. Calculated cross-sectional model and stages of the stress-strain state of the wood element for transverse bending. AIP Conference Proceedings. 2019; 2077 (1):020019.
Chicago/Turabian StyleSvyatoslav S. Gomon; Victor Karavan; Petro Gomon; Justyna Sobczak-Piąstka; Svyatoslav Gomon. 2019. "Calculated cross-sectional model and stages of the stress-strain state of the wood element for transverse bending." AIP Conference Proceedings 2077, no. 1: 020019.
Operation length of the buildings has always been one of the main criteria taken into account during the construction. Far not all buildings are serviced during the determined term. As a result of a lot of negative factors their structural members are in the state of technical failure or unsuitable for further normal operation and need repairing, which is mostly connected with their strengthening. The article gives the general provisions of the calculation of the normal section strength, rigidity and crack resistance of reinforced concrete beams strengthened by carbon-fiber composite materials adapted to the present regulations and building codes.
Oleksandr Borysiuk; Viktor Karavan; Justyna Sobczak-Piąstka. Calculation of the normal section strength, rigidity and crack resistance of beams, strengthened by carbon-fiber materials. AIP Conference Proceedings 2019, 2077, 020008 .
AMA StyleOleksandr Borysiuk, Viktor Karavan, Justyna Sobczak-Piąstka. Calculation of the normal section strength, rigidity and crack resistance of beams, strengthened by carbon-fiber materials. AIP Conference Proceedings. 2019; 2077 (1):020008.
Chicago/Turabian StyleOleksandr Borysiuk; Viktor Karavan; Justyna Sobczak-Piąstka. 2019. "Calculation of the normal section strength, rigidity and crack resistance of beams, strengthened by carbon-fiber materials." AIP Conference Proceedings 2077, no. 1: 020008.
As a structural component of the MONOPHANT architectural and construction system, the authors consider a frame executed on the element with a simple exterior, and complex interior geometry principle. Deliberate complication of interior geometry meets the necessary set of criteria and restrictions denoting the effectiveness of structures. A significant additional effect is obtained by providing inserts with a deliberately well-founded spatial configuration, which determines the rational work (resistance) of the construct. The procedure for choosing the inserts shape is based on the energy approach. Numerical implementation is performed with PC "Lira-10.6", which contains a block of energy calculations.
Оlеnа Lugchenko; Ali Nаzhеm; Justyna Sobczak-Piąstka. Special type reinforced concrete frame parameters rationalization. AIP Conference Proceedings 2019, 2077, 020037 .
AMA StyleОlеnа Lugchenko, Ali Nаzhеm, Justyna Sobczak-Piąstka. Special type reinforced concrete frame parameters rationalization. AIP Conference Proceedings. 2019; 2077 (1):020037.
Chicago/Turabian StyleОlеnа Lugchenko; Ali Nаzhеm; Justyna Sobczak-Piąstka. 2019. "Special type reinforced concrete frame parameters rationalization." AIP Conference Proceedings 2077, no. 1: 020037.
Svyatoslav S. Gomon; Victor Karavan; Petro Gomon; Justyna Sobczak-Piąstka; Svyatoslav Gomon. Investigation of solid and glued wood on the effect of variables of low-cycle repeated loads. 2019, 1 .
AMA StyleSvyatoslav S. Gomon, Victor Karavan, Petro Gomon, Justyna Sobczak-Piąstka, Svyatoslav Gomon. Investigation of solid and glued wood on the effect of variables of low-cycle repeated loads. . 2019; ():1.
Chicago/Turabian StyleSvyatoslav S. Gomon; Victor Karavan; Petro Gomon; Justyna Sobczak-Piąstka; Svyatoslav Gomon. 2019. "Investigation of solid and glued wood on the effect of variables of low-cycle repeated loads." , no. : 1.
Andrii Mazurak; Ivan Kovalyk; Vasyl Mykhailechko; Justyna Sobczak-Piąstka. Strength of joints of concrete abutment surfaces. 2019, 1 .
AMA StyleAndrii Mazurak, Ivan Kovalyk, Vasyl Mykhailechko, Justyna Sobczak-Piąstka. Strength of joints of concrete abutment surfaces. . 2019; ():1.
Chicago/Turabian StyleAndrii Mazurak; Ivan Kovalyk; Vasyl Mykhailechko; Justyna Sobczak-Piąstka. 2019. "Strength of joints of concrete abutment surfaces." , no. : 1.
Yuriy Famulyak; Bogdan Demchyna; Justyna Sobczak-Piąstka. The influence of size and form of plate anchors on their work at anchoring of reinforcement in the array of cellular concrete. 2019, 1 .
AMA StyleYuriy Famulyak, Bogdan Demchyna, Justyna Sobczak-Piąstka. The influence of size and form of plate anchors on their work at anchoring of reinforcement in the array of cellular concrete. . 2019; ():1.
Chicago/Turabian StyleYuriy Famulyak; Bogdan Demchyna; Justyna Sobczak-Piąstka. 2019. "The influence of size and form of plate anchors on their work at anchoring of reinforcement in the array of cellular concrete." , no. : 1.
Yevhenij Babich; Sergij Filipchuk; Victor Karavan; Justyna Sobczak-Piąstka. General requirements for materials of fortification protective structures. 2019, 1 .
AMA StyleYevhenij Babich, Sergij Filipchuk, Victor Karavan, Justyna Sobczak-Piąstka. General requirements for materials of fortification protective structures. . 2019; ():1.
Chicago/Turabian StyleYevhenij Babich; Sergij Filipchuk; Victor Karavan; Justyna Sobczak-Piąstka. 2019. "General requirements for materials of fortification protective structures." , no. : 1.
Justyna Sobczak-Piąstka. Diagnostyka wiaduktu drogowego. MATERIAŁY BUDOWLANE 2016, 1, 54 -55.
AMA StyleJustyna Sobczak-Piąstka. Diagnostyka wiaduktu drogowego. MATERIAŁY BUDOWLANE. 2016; 1 (7):54-55.
Chicago/Turabian StyleJustyna Sobczak-Piąstka. 2016. "Diagnostyka wiaduktu drogowego." MATERIAŁY BUDOWLANE 1, no. 7: 54-55.