BRIEF MESSAGES. DISCUSSIONS AND REVIEWS

Fracture mechanics and modern scientific research of building materials

Vestnik MGSU 12/2013
  • Oreshkin Dmitriy Vladimirovich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Chair, Department of Construction Materials; +7 (499) 183-32-29., Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 180-183

The article examines the modern monographs on fracture mechanics, strength, durability and crack resistance of building materials of the following European authors: Zaitsev U.V., Leonovich S.N., Schneider U., Eberhardshtayner E. The article presents the biographical data about the authors, their achievements in education and science, as well as the summary and analysis of the considered monographs.In the book of Zaitsev and Leonovich "The Strength and Durability of Structural Materials with Crack" the authors state, that the increase in reliability and durability of building structures and reinforced concrete structures the same as increase in concrete strength and optimization of its nonrigid features is one of the ways of solving urgent problems in the field of construction.The authors of the monograph "Structure, Strength and Fracture Mechanics of Concrete under Biaxial and Triaxial Compression" present the results of experimental and theoretical studies of the behavior of the common, extra strong, centrifugalled concretes and haydite concrete of various structures.In the monograph "Strength and Fracture Toughness of Structural Building Materials under Complex Stress State" the results of experimental and theoretical studies of the wood and concrete of various structures behavior under Biaxial and Triaxial Compression are presented.The monographs are destined for postgraduate students, candidates for a doctor's degree, scientific and engineering-technical workers of scientific and research centers and engineering companies.

DOI: 10.22227/1997-0935.2013.12.180-183

References
  1. Zaytsev Yu.V., Leonovich S.N. Prochnost' i dolgovechnost' konstruktsionnykh materialov s treshchinoy [The Strength and Durability of Structural Materials with Crack]. Minsk, BNTU Publ., 2010, 362 p.
  2. Zaytsev Yu.V., Leonovich S.N., Shnayder U. Struktura, prochnost' i mekhanika razrusheniya betonov pri dvukhosnom i trekhosnom szhatii [Structure, Strength and Fracture Mechanics of Concrete under Biaxial and Triaxial Compression]. Minsk, BNTU Publ., 2011, 382 p.
  3. Eberkhardshtayner Y., Leonovich S.N., Zaytsev Yu.V. Prochnost' i treshchinostoykost' konstruktsionnykh stroitel'nykh materialov pri slozhnom napryazhennom sostoyanii [Strength and Fracture Toughness of Structural Building Materials under Complex Stress State]. Minsk, BNTU Publ., 2013, 522 p.

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DYNAMIC SOUNDING WITHIN THE FRAMEWORK OF CLASSICAL MECHANICS AND THEORY OF HIGH-INTENSITY STRIKES

Vestnik MGSU 5/2012
  • Kashirskiy Vladimir Ivanovich - GrandGEO Open Joint Stock Company Candidate of Technical Sciences, Director for Production and Research +7 (495) 971- 26-41, +7 (495) 665-46-90, GrandGEO Open Joint Stock Company, 28 Schastlivaya st., Zavety Il'icha, Pushkino District, Moscow Region, 141254, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 202 - 212

Let be an orthonormalized polynomial system of n degree: , where is a weight function in the interval (-1,1), constants ; and is the Kronecker symbol. For every function we consider the Fourier-Sobolev series:
.
By virtue of the T-regular triangular matrix of real numbers we form the sequence of -means .
Some results of convergence and -summability (uniformly and almost everywhere) of Fourier-Sobolev series for polynomials orthogonal in continual-discrete Sobolev spaces are provided in the paper. These results expand and generalize the corresponding statements made by Fourier, Gegenbauer and Sobolev.

DOI: 10.22227/1997-0935.2012.5.202 - 212

References
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  6. Kashirskiy V.I. Zarubezhnyy opyt staticheskogo zondirovaniya [International Practices of Static Sounding]. Inzhenernye izyskaniya [Engineering Surveying]. 2009, no. 8 (August), pp. 28—36.
  7. Kashirskiy V.I. Opyt ispol’zovaniya staticheskogo zondirovaniya i vintovykh shtampov na ploshchadkakh izyskaniy v g. Moskve [Static Sounding and Screw Testing on Research Sites in Moscow]. Denisovskie chteniya [Scientific Readings in Commemoration of Denisov]. Collected works. Moscow, MSUCE, 2003, vol. 2, pp. 117—130.
  8. Kashirskiy V.I., Dmitriev S.V., Bizov A.N. Staticheskoe zondirovanie v Rossii: istoricheskiy ekskurs i sovremennoe sostoyanie [Static Sounding in Russia: Historical Background and Present-day State]. Inzhenernye izyskaniya [Engineering Research]. 2009, no. 5, pp. 30—40.
  9. Mariupol’skiy L.G. Issledovaniya gruntov dlya proektirovaniya i stroitel’stva svaynykh fundamentov [Exploration of Soils for the Purposes of Designing and Construction of Pile Foundations]. Moscow, Stroyizdat Publ., 1989, 200 p.
  10. Trofimenkov Yu.G. Staticheskoe zondirovanie gruntov v stroitel’stve (zarubezhnyy opyt) [Static Sounding of Soils in Construction]. Moscow, VNIINTPI [All-Russian Scientific and Research Institute of Problems of Scientific and Technical Progress and Information in Civil Engineering]. 1995,127 p.
  11. Trofimenkov Yu.G., Vorobkov L.N. Polevye metody issledovaniya stroitel’nykh svoystv gruntov [Field Methods of Research of Construction-related Properties of Soils]. Moscow, Stroyizdat Publ., 1981, 214 p.
  12. Shokal’skiy M.Yu., Van’kov D.A. Staticheskoe zondirovanie na oborudovanii «Fugro» (FUGRO) [Static Sounding through the Application of FUGRO Equipement]. Inzhenernye izyskaniya [Engineering Research]. 2009, no. 8 (August), pp. 52—57.
  13. Ziangirov R. S., Kashirsky V.I., Dmitriev S.V. Cone Penetration Test Data for Evaluating Soil Type, Composition and Properties. Geotechnical Engineering in Urban Environments. Proceedings of the 14th European Conference on Soil Mechanics and Geotechnical Engineering. Madrid, Spain, 24—27 September 2007, vol. 3. pp. 1679—1684.
  14. Batuev G.S., Golubkov Yu.V., Efremov A.K., Fedosov A.A. Inzhenernye metody issledovaniya udarnykh protsessov [Engineering Methods of Research of Strike-related Processes]. Moscow, Mashinostroenie Publ., 1977, 240 p., pp. 6—7.
  15. Kharitonchik E.M. O vzaimosvyazi zakonov mekhaniki i termodinamiki [About the Correlation of Mechanics and Thermodynamics]. Zemledelcheskaya mekhanika [Agricultural Mechanics]. Moscow, 1971, vol. 8, pp. 348—361.
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Specification of indoor climate design parameters at the assessment of moisture protective properties of enclosing structures

Vestnik MGSU 11/2016
  • Kornienko Sergey Valer’evich - Volgograd State University of Architecture and Civil Engineering (VSUACE) Candidate of Technical Sciences, Associate Professor, Department of Architecture of Buildings and Structures, Volgograd State University of Architecture and Civil Engineering (VSUACE), 1 Akademicheskaya str., Volgograd, 400074, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 132-145

Due to wide implementation of enveloping structures with increased heat-insulation properties in modern construction here appeared a necessity to assess their moisture conditions. Assessment of moisture conditions of enveloping structures is carried out according to maximum allowable moisture state basing on determining the surface of maximum damping. In relation to it the necessity of additional vapour barrier is checked using moisture balance equation. Though the change of indoor climate parameters in premises is not taken into account in moisture balance equations defined for different seasons. The author improves the method of calculating moisture protective parameters of enclosing structures according to the maximum allowable damping state for a year and a period of moisture accumulation. It is shown in this article that accounting of temperature and relative humidity change of inside air allows specifying calculated parameters of indoor climate in residential and office rooms in assessment of moisture protective properties of enclosing structures for the case of an effective enclosing structure with a façade heat-insulation composite system. Coordinates of the maximum moistened surface of the envelope depends on indoor climate design parameters. It is concluded that the increase of requirements for moisture protection of enclosing structures when using design values of temperature and relative humidity of internal air according to the Russian regulation (SP 50.13330.2012) is not always reasonable. Accounting of changes of indoor climate parameters allows more precise assessment of moisture protective properties of enclosing structures during their design.

DOI: 10.22227/1997-0935.2016.11.132-145

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