Bulletin of Prydniprovs'ka State Academy of Civil Engeneering and Architecture

11-15

Authors: M. V. Savytskyi, N. Storozhuk

Statement of the problem. It is unusual that with the same thickness of a brick and adobe walls, while the density of brick and adobe masonry is the same, thermal conductivity of these materials is equal, but there is much warmer in winter, drier, much easier to breathe and in general people feel much healthier in an adobe house than in a brick one. Considering this fact and also the intensive pollution of the environment, we need to return to adobe construction. It is clear that such return should be made on a qualitatively new technological level. It means modern technologies of adobe production; construction not only cottages outside the city but also construction of schools, kindergartens, hospitals not only in rural areas but also in the cities. In this case, both the environmental and economic problems are solved. It is well known that adobe construction is the cheapest type of construction. Analysis of publications. Application of clay for construction of buildings and structures is known from time immemorial. Such buildings and structures were built in large numbers in ancient Egypt and currently a lot of adobe buildings are built in Central Asia and Bulgaria. Construction from clay was widely used in Ukraine and Central Russia. Large and long experience of construction from clay in Germany is particularly noteworthy. So 36 2-storeyed buildings, a 3-storey factory housing and one building on a hill, having 5 floors from one hand, were built in the city of Weilburg in 1836. After World War I Germany faced the problem of rapid recovery of the cities and villages. Generalization of existing experience of construction from adobe, positive results of prolonged maintenance of previously constructed buildings allowed builders to take a decision on restoration of buildings by adobe construction. In Germany 1919 is called by the year of revival of construction from adobe. In this period a very large number of one- and two-storey buildings of different function were built from this material. In the twenties of the last century Doctor of Engineering Ilkevich I.K. conducted extensive surveys of buildings and other structures built from adobe. His conclusion came to the following. The buildings from adobe have sufficient durability. So, for example, Priory Palace (building of the city Duma) in Gatchina, built 125 years ago, is operated on the present. It is conclusively proven that with proper implementation of construction works there is completely dry in residential areas. Good natural ventilation (air exchange throughout the pores of the walls) is noted particularly. Experiments have shown that it is several times better for adobe walls than for brick walls and 80 times better than for the walls made of concrete hollow stones. Coefficient of thermal conductivity of adobe walls is much lower than for common brick or concrete walls. As to technology of adobe, according to our data, builders did not improve technology of forming of adobe – technology developed in ancient Egypt was used. The purpose of the work. To develop a rational composition of clay and straw mix for forming of adobe and technology of its production with the use of modern equipment. Conclusions. A new technology of adobe by pressing method is offered. The whole point is that chopped straw is preliminarily kept in lime milk for 7–10 days, and then the same lime milk is used when preparing clay and straw mix. It gives the possibility to increase adobe strength significantly and improve its other properties.

19-24

Authors: V. R. Mlodetskyi, A. Zahumennova, N. Moroshkyna

Statement of the problem . For the construction industry is characterized by a long period of project implementation, leading to significant deviations from the actual parameters specified in the work plan . And noted that the for a longer period of time developing the plan , the higher the probability of breach targets. Current research in the field of planning and construction process into account the factors of external and internal environment by defining the parameters of schedules considering the reliability level of achievement. However , this approach ignored the determining process management implementation. And when it comes to the reliability of achieving the end result, it is necessary to comprehensively consider two processes – planning and level of reliability – Enabled him with one hand, and the management , the efficiency of which is shown to achieve a higher level of reliability of the final result than was stipulated schedule. Accordingly, research on improving the methodology scheduling of the construction in the direction of improving their reliability and further selecting a mode of construction management at the stage of implementation of the plan is relevant. Analysis publications. When it comes to the «likelihood of fulfillment of certain events in the future», it is important to reveal the concept of «an event», by which we mean : — An event that does not generate positive results. According to this division and studies. Some examine the reliability factor (the first option) formulation developments and other risks (the second option ). In probability theory proved that the probability of two opposite events complement each other to complete the event. Traditionally so happened that in the construction of more widespread study of the reliability of the process , and the prevailing economic sciences research risk factors .In work done in 90 years in the organization and planning of building work was mainly deterministic approach to calculating schedules , both within the PIC and PPR .They used the classical methods of calculating flow and network diagrams , and the main attention was paid to streamlining modes of performance. Works that are based on probabilistic approach , were isolated , albeit basic theory of organizational and technological reliability were established in the early 70's. In the works since the mid 90's to the present time greater or lesser extent , take into account the probabilistic nature of organizational and technological processes. Practically , in most of the analyzed studies emphasized on low reliability plans. Some saw it as a problem of imperfection used techniques which were developed plans and justify the need for improvement, while others have drawn attention to the role of process control and reliability of achieving the final result. It is expected that these processes can not be treated in isolation from each other , the reliability of the final result is defined as the effective planning and efficient management of the implementation. The purpose of the article. Is to establish the impact of organizational and technological solutions at the stage of planning and management process to achieve the reliability of the final result of the project. Conclusion. Based on the analysis of current followers in organizational and technological reliability in construction found that despite ongoing research in the last decade , the reliability of the plans , including construction is rather low . One reason is that the evaluation of the reliability of the final result only from the decisions embodied in the schedules , the stage of development, is not sufficient-condition is necessary to determine further management mode as the active component of the process of improving the reliability of construction.

30-38

Authors: M. Yeliseyeva

Statement of the problem. Fundamental properties of fine concrete, affecting its durability and life cycle of article made of it, such as strength, deformability, chemical resistance and others, largely depend on the characteristics of the aggregate used. With decreasing of fineness modulus of aggregate, its influence on the properties of concrete mix and hardened concrete increases. At the same time, both in Ukraine and abroad the problem of shortage of quality natural fine aggregate for concrete exacerbates. Besides, low– quality sand in composition of fine concrete can be replaced by secondary material resources — industrial waste. Application of waste product of ferrous metallurgy — granulated blast–furnace slag is the most effective. As it was stated previously [15], granulated blast–furnace slag in composition of Portland cement concrete acts as an active micro filler. Its surface layer reacts with calcium hydroxide that is released during cement hydrolysis. This produces an additional amount of calcium hydrosilicate, creating an extremely strong bond of aggregate with cement matrix. This greatly improves adhesive strength of concrete, its corrosion resistance and a number of other physical and mechanical characteristics. Application of slag will reduce the cost of fine concrete and free land areas from slag dumps and improve the environmental situation in the country. Analysis of publications. A series of works of such scientists as V. I. Babushkin, V. I. Bolshakov, P. P. Budnikov, Yu. M. Butt, A. V. Volzhenskiy, V. D. Glukhovskiy, P. V. Krivenko, V. F. Krylov, V. V. Lapin, A. S. Mironov, I. A. Pashkov, G. V. Pukhalskiy, S. M. Royak, R. F. Runova, N. I. Fedynin, S. V. Shestoperov, S. A. Shcherbak, M. P Elinzon, V. N. Yung and many others, is devoted to studying of the properties of metallurgical slag, and construction materials and articles made on its basis. The purpose of the work is to examine the basic properties of granulated blast–furnace slag, affecting the quality of fine concrete, in order to identify what kind of slag treatment is the ost appropriate when producing durable concrete. Conclusions. 1. Studies of basic physical–chemical and mechanical characteristics of granulated blast–furnace slag of Petrovsky works has shown that it can be not only an aggregate in composition of fine concrete, but also a filler that replaces part of a binder. The studied slag has a quality factor of 1,59–1,62 and contains a high number of reactive glass phase in its mineralogical composition. 2. Structure of slag grains is porous; particles are largely vitrified. Pores are predominantly irregular oblong; some of them are through slit–like. 3. Basic physical and mechanical properties of granulated blast–furnace slag have poor performance for dense fine concrete. Granulometric composition does not have the optimal ratio of coarse and fine fractions that causes high voidage and water requirement of the slag. Thus, to improve physical–mechanical and other properties of slag and to produce high–quality strong fine concrete on its base, it is expedient to carry out pre–processing of granulated blast–furnace slag. The most effective, from our point of view, may be its mechanical activation.

43-55

Authors: V. Uzhelovs'kyy, P. Kashuba

Problem statement. Automatic warehouse is a collection of shelving constructions and robotic transporters, performing operations of loading and unloading stored articles without the participation of human, that allows to avoid errors in the processing, which may result of human factors. Research objective. The aim of the study is to determine and accept the most efficient (by technical and economic performance) pathfinding algorithm from existing by developing warehouse control system, which simulates the real processes in the automatic warehouse. Achieving this goal is possible by perform the following major tasks: 1. Development and implementation of warehouse control system that provides generation of a warehouse model with a specific configuration (specified number of rows, shelves in a row and robotic transporters) and the realization of robotic transporters moving in the warehouses by chosen pathfinding algorithm finding the shortest path. 2. Carrying out computer studies of developed model of the warehouse control system with the evaluation of its performance in the real automatic warehouse processes. 3. Performing experimental research of the developed warehouse control system to evaluate its dynamic characteristics. 4. Performing feasibility calculations for each of the pathfinding algorithms and comparing their results. Conclusions. As a result, are realized programs of pathfinding algorithms on ECMAScript programming language using JavaScript standard. Developed and implemented a simulation model of warehouse control system on ECMAScript language with graphics library Pixi.js. Were carried out computer studies of developed model of the warehouse control system with the evaluation of its performance. Performed comparative calculations of each pathfinding algorithm with determining the most effecient of them

63-68

Authors: O. Hrystya

Information space era of globalization, which is one of the most important factors of a young man twenty–first century, and other extralinguistic factors affect a cultural context of the era for which purely national elements are often more decorative than fundamental. The opposition National — International today is relevant to many nations of the form of balance depends largely on the way of the world community. Therefore, the formation of personality–oriented national value system remains one of the primary tasks of modern education. Effective means of increasing the level of language, communication and cultural competence of students in the study of various sections of the course of the Ukrainian language for professional purposes is to deepen knowledge of the nature of Ukrainian anthroponymicon. One source study the characteristics of Ukrainian national system of names is creativity Dnieper Seagull, which can be considered as a source of texts factual material to create training exercises with Ukrainian language. This article is devoted to analysis of methodological and educational potential of prose texts writer. Composition and structure atroponimikonu realistic prose Dnieper Seagull correlated with Ukrainian national traditions name. As you can see, even a brief overview antroponimnyh units suggests the possibility of using text Dnieper Seagull as material for training exercises with Ukrainian language. These exercises serve a number of educational and pedagogical objectives aimed at developing independent thinking young people develop skills of analysis components of national and world culture. Working with anthroponimical material also contributes to a better assimilation rules official and everyday communication etiquette conscious use of various forms of personal names in accordance with the conditions and problems of communication.