Functional Materials and Processing Technologies II

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Authors: Vladimir Bai, Vladimir Maltsev
Abstract: The article reveals the main reasons for the failure of the schedule for implementing BIM-technologies in the construction industry in Russia. The state and level of use of BIM-technologies in various sectors of the construction industry is considered. The issue of implementing BIM-technologies in documentation of cadastral registration of capital construction objects is considered in more detail, since this issue has not been covered in the press yet. The integration of capital facilities and plots of land into a unified real estate register is declared, which is natural. But in view of the fact that land plots and capital facilities were previously accounted for in different registries by different departments, combining them into a unified register presents notable difficulties from the point of view of automating the production processes of creating, maintaining and storing registry documents. To determine the technical feasibility of combining two differently structured document registers, the macro-composition and data assignment in each of them were analyzed, common features and differences were revealed, and a method of combining documents of the same name from two registries into one was offered. A way to accelerate the implementation of BIM-technologies in the construction industry of Russia was offered. The possibility and necessity of parallel implementation of BIM-technologies in all sectors of the construction industry at the same time was justified.
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Authors: Farit Agzamov, Arman Kabdushev, Abdulahat Ismailov, Aizhan Betzhanova, Asel Karabaeva
Abstract: Relevance of this study is concluded in the fact that high quality cementing requires regulation of the cement grouts’ properties using various chemicals. The objective of the work is based on the study of polyelectrolytes’ application efficiency used for regulation of cement slurries’ properties. In order to conduct the research the authors used the devices meeting the API requirements. Properties of cement slurry and cement were evaluated according to GOST 1581-96. In order to study the gas show emergence mechanism during the procedure of WOC (waiting on cement), the authors used a special experimental plant. It has been found that high efficiency during the research was shown by water soluble cationic polyelectrolyte (WSC-402), belonging to the class of cationic polymers. Also the paper considers its analog – cationic polyelectrolyte (PAK) released under the trade mark Praestol. Studying the mechanism of polyelectrolyte additives’ effect on cement showed that the chemicals can slow down the hydrating reaction of С3А in cement-water suspension, and prevent from the growth of gel strength of the grout, which causes drop in hydrostatic pressure of the cement grout column, provoking gas shows.
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Authors: Margarita Perkova, Lyudmila Kolesnikova, Elena Korotun
Abstract: The issues of the development of engineering thinking in the training of architects, starting with pre-university training at school, are considered; the optimal list of disciplines and their content within the school process are determined. The methods of training specialists, their adaptation to the conditions of professional work in the learning process are considered. The method of competitive real design as an elective part of "Architectural Design" of students of the Belgorod Architectural School is discussed, which will improve the training of architects in higher education and develop engineering thinking.
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Authors: Ekaterina A. Barteneva, Mikhail A. Ylesin, Nikolay A. Mashin, Dmitry V. Dubrov
Abstract: Foam concrete solidifying in natural conditions significantly shrinks, which causes deterioration of the porous structure and thus the increase in the heat conductivity of the material. One of the solutions for this problem is application of mineral modifiers. As the mineral modifiers the authors used the production waste – mineral additives (wollastonite, diopside) at natural dispersive capacity, as well as milled down to 300 and 600 m2/kg of specific surface. The application of perlite microspheres in foam concrete was investigated. The thermal conductivity coefficient was defined by rapid method. The optimal composition of the mixture for manufacturing foam concrete products with mineral additives ensures the decrease in the heat conductivity coefficient by 41-43% compared to the reference composition. At complete replacement of fly-ash aggregate by perlite microspheres the thermal conductivity coefficient decreases down to 0.062 W/ (m×°С). The economic effect of application of the developed foam concrete with the additive of wollastonite and diopside compared with the foam concrete presented on the market is equal to 259 / 388 RUB/m2 of an erected structure at the density of D300/ D400 respectively. Thus, directed regulation of the porous structure of cellular concrete leads to significant improvement of stability of the foam concrete mixture, which makes the prerequisites to the decrease in the thermal conductivity of the material and positive technical and economical results.
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Authors: Elena V. Umnova, Mikhail A. Ylesin, Nikolay A. Mashin, Natalya V. Karmanovskaya
Abstract: The use of calcium polysulfide sealer, which can be obtained by dilution of sulphur in lime suspension heated to 95 оС, when producing concrete of high specific weight provides improvement of its strength while being compressed by 30-50%. In doing so, up to 50% portland cement in the composition of binding one can be replaced with metallurgic ferriferrous slag or ferriferous stubs.
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Authors: Boris V. Krutasov, Mikhail A. Ylesin, Nikolay A. Mashin, Dmitry V. Dubrov
Abstract: The paper deals with the issues of restoration of the wooden architecture monuments in Western Siberia by using the technology of wood modification. In order to modify the elements of the wooden buildings under restoration the authors studied hydrophobisators based on organic-silicone compounds. We have also defined the compositions and technologies of wood modification at the restoration of the wooden architecture monuments. Thermally modified wood may be used for restoration and replacement of the base courses of the wooden buildings.
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Authors: Aleksei A. Klyukin, Valerii N. Kulachkovsky, Valerii N. Evseev, Anna I. Klyukina
Abstract: The management quality of the process of territorial and urban planning and construction significantly affects the prospects for successful development of the city. A common problem in this case is objectively conditioned opposition of interests of municipal administrations, developers, designers and townspeople. Among the whole complex of problems generated by such confrontation in this paper, the problem of information support of urban development is highlighted. The main requirements are formulated, which should be met by information systems accompanying the urban development, and it is also shown that the present existing and traditional architecture does not fully meet the requirements for the majority of information systems such as "data storage – information consumer". A new approach to the construction of information systems for the provision of city planning activity based on the recently emerged protocols of interaction in the information field and information technologies is proposed. It is shown that the optimal solution of the problem can be found in a bundle of technologies of the mediated interaction "supplier-receiver" of the Uber type, blockchain and smart contracts on the blocking platform. The place and boundaries of applicability of each of these protocols are determined and the possible results of the joint work of these technologies in the sphere of town planning are shown.
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Authors: Nikolai S. Sokolov
Abstract: . When building buildings and structures on unstable slopes, it becomes necessary to develop geotechnical technologies that ensure their stability. In addition, geotechnical techniques should be developed to ensure the safe operation of existing facilities built on them. Therefore, the main purpose of the work is to study one of the geotechnical technologies to ensure the stability of the fence fencing. As a rule, the opening of any foundation pit entails the emergence of additional efforts reducing the stability of the slopes. The task of ensuring the stability of the pit walls together with the loads on its bumps, as well as the general stability of the slope as a whole, is an urgent task of modern geotechnical construction. It is established that the structural solutions of the buried structures represent a special auxiliary containment structure, fence constructions, ground anchors that are arranged after the first stage of the excavation.
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Authors: Nikolai S. Sokolov
Abstract: Modern geotechnical construction has a wide range of technologies in its toolkit. Use of the Piles, manufactured with the help of different available technologies, represents one of the ways of the underground structures utilization at the objects zero level construction. The following basics shall be observed during zero cycle design and construction: 1) interactivity; 2) engineering viability; and cost efficiency. First principle suppose that interactivity utilization at the design is compulsory. This means: “initial design – test area – revised design”. It is necessary to adhere to the second principle for each of the elements of the formula given above. To ensure this, there are considered three and more Piles types (Bored Piles and Inclined Piles) in the initial design. It was determined that use of the Inclined Piles with multi point widening manufactured according to the Electric-Discharge Technology (EDT) is more preferable in comparison with the other Piles types. In effect, being Inclined Piles with the adjustable Holding Power, they have competitive advantages versus any other Pile. Therefore, use of the EDT Inclined Piles in the geotechnical construction after the interactive design has engineering viability and is a cost efficient way of underground structures construction.
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