RESEARCH OF BUILDING MATERIALS

IMPACT GRINDING OF DAMP MATERIALS

Vestnik MGSU 6/2012
  • Ladaev Nikolay Mikhaylovich - Ivanovo State University of Architecture and Civil Engineering (IGASU) Candidate of Technical Sciences, Associated Professor, Department of Manufacturing of Building Materials +7 (4932) 41-39-06, Ivanovo State University of Architecture and Civil Engineering (IGASU), 20 8ogo Marta St., Ivanovo, 153037, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Guyumdzhyan Perch Pogosovich - Ivanovo State University of Architecture and Civil Engineering (IGASU) Doctor of Technical Sciences, Professor, Department of Manufacturing of Building Materials, Ivanovo State University of Architecture and Civil Engineering (IGASU), 20 8ogo Marta St., Ivanovo, 153037, Russian Federation.
  • Zhbanova Elena Valentinovna - Ivanovo State University of Architecture and Civil Engineering (IGASU) Candidate of Technical Sciences, Associated Professor, Department of Manufacturing of Building Materials, +7 (4932) 41-39-06, Ivanovo State University of Architecture and Civil Engineering (IGASU), 20 8ogo Marta St., Ivanovo, 153037, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 88 - 91

According to the authors of the article, it has been proven that dry and damp materials crushed in grinders of the shock type demonstrate different grinding patterns. Therefore, there is a need to explore the influence of the moisture content produced on the efficiency of grinding. The most efficient grinding mode is the one that assures maximal probability of destruction.
Centrifugal grinders were used to analyze the grinding process. The experimental data have proven that the probability of destruction of damp samples is a lot higher than the one of dry samples, given the same initial dimensions of particles and the loading intensity.
The rise in the probability of destruction is stipulated by the fact that that the grinder speed at which crushing is triggered is lower in case of damp samples than in case of dry ones. Expressions for speed that describes destruction initiation and the probability of destruction depending on the type of materials, the moisture content and the loading intensity have been derived.

DOI: 10.22227/1997-0935.2012.6.88 - 91

References
  1. Ladaev N.M., Zhbanova E.V., Guyumdzhyan P.P. Obezvozhivanie khrupkikh materialov pri udarnom nagruzhenii [Dehydration of Fragile Materials in the Course of Impact Grinding]. Izvestiya VUZov. Khimiya i khimicheskaya tekhnologiya [Bulletins of Institutions of Higher Education. Chemistry and Chemical Engineering]. 2010, vol. 53, no. 1, 6, 7.
  2. Zhbanova E.V. Obezvozhivanie khrupkikh materialov pri razrushenii [Dehydration of Fragile Materials in the Course of Crushing]. Proceedings of the 4th Scientific Conference of Postgraduates and Unenrolled Postgraduates. IGASU, Ivanovo, 2005, p. 88.
  3. Ladaev N.M., Guyumdzhyan P.P. O veroyatnosti razrusheniya khrupkogo materiala udarom [About the Probability of Impact Grinding of Fragile Materials]. Stroitel’stvo i rekonstruktsiya [Construction and Restructuring]. 2011, no. 4, pp. 43—47.
  4. Ladaev N.M., Guyumdzhyan P.P., Zhbanova E.V., Markov V.V., Kiseleva E.V. Izmel’chenie izvestnyaka pri odnokratnom nagruzhenii kak faktor protsessa prigotovleniya tekhnologicheskoy zhidkosti dlya obrabotki materialov rezaniem i tekhnologii stroitel’nykh materialov [Milling of the Limestone by Means of Single Loading as the Factor of the Process of Preparation of the Process Fluid Designated for the Cutting of Materials and the Technology of Building Materials]. Vestnik IGEU [Proceedings of Ivanovo State Power Engineering University]. 2007, no. 3, pp. 59—61.
  5. Ladaev N.M., Guyumdzhyan P.P., Zhbanova E.V. Obezvozhivanie izvestnyaka v mel’nitsakh udarnogo nagruzheniya [Dehydration of Limestone in Shock Type Mills]. Collected papers of the 17th International Scientific and Practical Conference “Information Media of Higher Education Institutions”. Ivanovo, 2010.
  6. Dmitrieva L.A. K voprosu ob izmel’chenii odinochnoy chastitsy udarom [About the Impact Grinding of a Single Particle]. Collected papers of the 11th International Scientific and Practical Conference “Information Media of Higher Education Institutions”. Ivanovo, 2004.
  7. Dmitrieva L.A., Guyumdzhyan P.P. Vliyanie skorosti razrusheniya chastitsy na granulometricheskiy sostav [Influence of the Particle Crushing Speed on the Granulometric Composition]. Collected papers of the 12th International Scientific and Practical Conference “Information Media of Higher Education Institutions”. Ivanovo, 2005.
  8. Ladaev N.M., Guyumdzhyan P.P., Zhbanova E.V. Ob izmel’chenii materialov v mel’nitse udarnogo deystviya [About the Crushing of Materials in the Mill of the Shock Type]. Stroitel’stvo i rekonstruktsiya [Construction and Restructuring]. 2011, no. 3, pp. 59—63.
  9. Yasinskiy F.N., Guyumdzhyan P.P., Dmitrieva L.A. Nekotorye obobshcheniya eksperimental’nykh issledovaniy udarnogo razrusheniya khrupkikh materialov [Some Conclusions of Experimental Research of Impact Grinding of Fragile Materials]. XII Benardosov Readings, collected papers of the International Scientific and Practical Conference. Ivanovo, 2005.
  10. Zhbanova E.V., Guyumdzhyan P.P., Ladaev N.M. Obezvozhivanie pri deformatsii i razrushenii khrupkikh materialov [Dehydration in the Course of Deformation and Crushing of Fragile Materials]. Collected papers of the 12th International Scientific and Practical Conference “Information Media of Higher Education Institutions”. Ivanovo, 2005, pp. 622—623.

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EVALUATION OF THE LUMP-FORMING CAPACITY OF CALCIUM CARBONATE WASTES WITHIN THE FRAMEWORK OF DEMONSTRATION OF F EASIBILITY OF TECHNOLOGY OF THEIR GRANULATION INTO ARTIFICIAL GRAVEL

Vestnik MGSU 11/2012
  • Chernykh Dmitry Ivanovich - Arkhstroynauka Centre of Scientific Research and Creativity, Voronezh State University of Architecture and Civil Engineering (Voronezhskiy GASU) Ist Category Engineer, Arkhstroynauka Centre of Scientific Research and Creativity, Voronezh State University of Architecture and Civil Engineering (Voronezhskiy GASU), 84 20-letiya oktyabrya st., Voronezh, 394006, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Chernyshov Evgeniy Mikhaylovich - Voronezh State University of Architecture and Civil Engineering (VGASU) Doctor of Technical Sciences, Professor, Member of the Russian Academy of Architectural and Construction Sciences (RAACS), Chairman of the Presidium of Central Regional Section of RAACS; Professor, Department of Technology of Construction Materials, Products and Structures; Director; +7 (473) 239-53-53, Voronezh State University of Architecture and Civil Engineering (VGASU), 84 20-letiya Oktyabrya st., Voronezh, 394006; Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • 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 177 - 182

The objective of this research project is to substantiate the optimal values of disperse calcium
carbonate waste materials, to ensure their granulation into artificial stone, and to substantiate the
output rate efficiency.
In the course of the research, the authors assessed the lump-forming rate demonstrated by
calcium carbonate waste materials and cement grade CEM I 42,5 N on the basis of their molecular
and capillary moisture capacity. The assessment methodology that defines the threshold of the
lump-forming capacity, as well as the coefficient of output of man-made gravel for different dispersions
of calcium carbonate waste materials have been identified. Data reliability is based on the
mapping of the nature of dependences between the coefficient of lump-forming and the coefficient
of gravel output on specific surface areas.
The authors have identified that calcium carbonate waste materials have a lump-forming factor
that is close or equal to 100%, if its dispersibility is equal to 400-600 m2/kg. In this case, the
highest lump-forming rate is accompanied by the waste fineness of 500 m2/kg.

DOI: 10.22227/1997-0935.2012.11.177 - 182

References
  1. Vityugin V.M., Bogma A.S. Otsenki komkuemosti melkozernistykh materialov [Assessments of the Lump-forming Capacity of Fine-grained Materials]. Izv. vuzov. Chernaya metallurgiya. [Bulletin of Institutions of Higher Education. Ferrous Metallurgy]. 1969, no. 4, pp. 18—22.
  2. Vityugin V. M. Issledovaniya protsessa granulirovaniya okatyvaniem s uchetom svoystv komkuemosti dispersiy [Research into the Process of Granulation through Pelletizing with Account for the Lumpforming Properties of Dispersions]. Tomsk, 1975, 42 p.
  3. Vityugin V.M. K teorii okomkovaniya vlazhnykh dispersnykh materialov [On the Theory of Lumpforming of Moist Disperse Materials]. Izvestiya TPI [News of Tomsk Polytechnic Institute]. Tomsk, 1975, vol. 272, p. 127.
  4. Shmit’ko E.I., Verlina N.A., Smotrov V.I. Upravlenie strukturoy betona cherez vlazhnostnyy faktor [Concrete Structure Management by Means of Humidity Factor]. Stroitel’nye materialy. Oborudovanie tekhnologii XXI. [Construction Materials, Machinery and Technologies of the XXIst Century]. 2005, no. 11, pp. 14—16.
  5. Verlina N.A. Vliyanie vlazhnostnogo faktora na protsess strukturoobrazovaniya tsementnykh sistem [Infl uence of the Humidity Factor on the Structurization of Cement Systems]. Abstracts of reports of the 55—56th scientific and technical conference. Voronezh, 2001, pp. 33—35.
  6. Papadakis M., Bobmbled J.P. “Rev. mater. constr. et. Trav. Publics”. 1961, no. 49, pp. 289—299.
  7. Chernyshov E.M., Potamoshneva N.D., Chernykh D.I. Poluchenie iskusstvennogo graviya s ispol’zovaniem karbonatkal’tsievykh otkhodov proizvodstva nitroammofoski [Recovery of Artificial Gravel Using Calcium Carbonate Wastes of NPK Production]. Nauchnye issledovaniya nanosistemy i resursosberegayushchie tekhnologii v stroyindustrii [Scientific Research of the Nanosystem and Resource-saving Technologies in the Construction Industry]. Collected reports of the International Scientific and Practical Conference, Part 2. Belgorod, BGTU im. V.G. Shukhova publ., 2007, pp. 304—307.
  8. Korotich V.I. Teoreticheskie osnovy okomkovaniya zhelezorudnykh materialov [Theoretical Fundamentals of Lump-forming of Iron Ore]. Metallurgiya Publ., 1966, p. 138.
  9. Klassen P.V., Grishaev I.G. Osnovy tekhniki granulirovaniya [Fundamentals of the Granulation Process]. Moscow, Khimiya Publ., 1982, p. 188.
  10. Timashev V.V., Sulimenko L.M., Àl›bats B.S. Àglomeratsiya poroshkoobraznykh silikatnykh materialov [Agglomeration of Powdered Silicate Materials]. Moscow, Stroyizdat Publ., 1978, p. 51.

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SANDY SOILS: GEO-ECOLOGICAL EVALUATION OF THEIR STRENGTH DEVELOPMENT PROCESS (IN THE CONTEXT OF THE PHYSICAL CHEMICAL THEORY OF EFFECTIVE STRESSES)

Vestnik MGSU 2/2013
  • Potapov Ivan Aleksandrovich - Scientific and Research Institute of Emergency Healthcare named after N.V. Sklifosovskiy engineer, Scientific and Research Institute of Emergency Healthcare named after N.V. Sklifosovskiy, ; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Potapov Aleksandr Dmitrievich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Professor, Head, Department of Engineering Geology and Geoecology, 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 .
  • Shimenkova Anastasiya Anatol’evna - Moscow State University of Civil Engineering (MGSU) engineer, Department of Engineering Geology and Geoecology, 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 166-180

The authors consider the strength development of sandy soils in the contest of the physical chemical theory of effective stresses. The authors drive particular attention to the assessment of formation of various types of energy contacts in sandy soils. The article is based on the overview of theories developed by several researchers, on the one hand, and on the findings of the experimental research of sandy soils that have different structural patterns, on the other hand. The experiments include both those that were held a while ago and the most recent projects. The authors have proven that the strength of sandy soils is, to a significant extent, driven by their morphological peculiarities that determine their condition in the context of the assessment of their “densitymoisture”. Strength values of sands are dependent on their moisture content both in terms of their maximal shear stress values obtained in the course of shear testing, or their per-unit penetration resistance, penetration values, as well as the inner friction angle and cohesion. The “strength-moisture” is presented as a curvilinear graph that has two upper limits, one for shear tests and the other one for penetration tests. Maximal strength, according to the shear test, is attained for dry sands, if their moisture content is close to the “optimal” value. As for the penetration tests, maximal per-unit resistance to penetration and penetration values are also close to the “optimal” moisture content value. The authors have identified that moisture content is an important factor of strength of sandy soils that demonstrate various structural characteristics.However, the process of formation of structural peculiarities of sands, namely, their morphological parameters and the nature of the surface of sand particles is influenced by the presence of various films on the surface of sand particles. The article represents a preliminary analysis of the theoretical and experimental findings, therefore, any discussions are welcome.

DOI: 10.22227/1997-0935.2013.2.166-180

References
  1. Potapov A.D. Nauchno-metodologicheskie osnovy geoekologicheskoy bezopasnosti stroitel’stva [Scientific and Methodological Fundamentals of Geo-ecological Safety of Construction Works]. Moscow, MGSU Publ., 2002, 312 p.
  2. Anan’ev V.P., Potapov A.D. Inzhenernaya geologiya [Engineering Geology]. Moscow, Vyssh. shk. publ., 2008, 346 p.
  3. Potapov A.D. Ekologiya [Ecology]. Moscow, Vyssh. shk. publ., 2005, 328 p.
  4. Platov N.A., Potapov A.D., Lebedeva M.D.. Peschanye grunty [Sandy Soils]. Moscow, ASV Publ., 2008, 186 p.
  5. Potapov A.D., Potapov I.A., Shimenkova A.A. Nekotorye aspekty primenimosti k peschanym gruntam polozheniy fiziko-khimicheskoy teorii effektivnykh napryazheniy [Particular Aspects of Applicability of Provisions of the Physical and Chemical Theory of Effective Stresses to Sandy Soils]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2012, no. 10, pp. 229—239.
  6. Potapov I.A., Potapov A.D., Shimenkova A.A. Formirovanie raznykh tipov energeticheskikh kontaktov v peschanykh gruntakh v aspekte fiziko-khimicheskoy teorii effektivnykh napryazheniy [Formation of Different Types of Energy Contacts in Sandy Soils in the Framework of the Physicochemical Theory of Effective Stresses]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2012, no. 11, pp. 210—218.
  7. Potapov I.A., Shimenkova A.A., Potapov A.D. Zavisimost’ suffozionnoy ustoychivosti peschanykh gruntov razlichnogo genezisa ot tipa fil’trata [Dependence of Suffosion Stability of Sandy Soils of Various Geneses on the Type of Filtrate]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2012, no. 5, pp. 79—86.
  8. Potapov A.D., Potapov I.A., Shimenkova A.A. Rol’ plotnosti — vlazhnosti v peschanykh gruntakh v formirovanii effektivnykh napryazheniyakh s pozitsiy fiziko-khimicheskoy teorii [The Role of the “Density – Moisture” of Sandy Soils in Formation of Efficient Stresses from the Perspective of the Physicochemical Theory]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2012, no. 12, pp. 104—110.
  9. Senyushchenkova I.M. Teoriya formirovaniya i metody razvitiya urbolandshaftov na ovrazhno-balochnom rel’efe [Theory of Formation and Methods of Development of Urban Landscapes in the Gully Relief]. Moscow, MGSU Publ., 2011, 376 p.
  10. Osipov V.I. Fiziko-khimicheskaya teoriya effektivnykh napryazheniy v gruntakh [Physicochemical Theory of Effective Stresses in Soils]. IGE RAN [Institute of Geo-ecology of the Russian Academy of Sciences]. Moscow, IFZ RAN [Institute of Physics of the Earth (IPE)], 2012, 74 p.
  11. Osipov V.I. Strukturnye svyazi kak osnova otsenki fiziko-mekhanicheskikh svoystv glinistykh porod [Structural Links as the Basis for Assessment of Physical Mechanical Properties of the Glay Rock]. Sovershenstvovanie metodov laboratornykh issledovaniy gruntov pri inzhenernykh izyskaniyakh dlya stroitel’stva : Tezisy dokladov 2 Respublikanskogo soveshchaniya. [Improvement of Methods of Laboratory Testing of Soils as Part of Engineering Surveys for Civil Engineering Purposes. Abstracts of Reports of the 2nd Republican Meeting]. Moscow, Stroyizyskaniya Publ., 1977, pp. 29—40.
  12. Trofimov V.T. Gruntovedenie [Pedology]. Moscow, MGU Publ., Nauka Publ., 2005, 1024 p.
  13. Gol’dshteyn M.N. Mekhanicheskie svoystva gruntov. Osnovnye komponenty grunta I ikh vzaimodeystvie. [Mechanical Properties of Soils. Principal Components of Soil and Their Interaction]. Moscow, Stroyizdat Publ., 1973, 375 p.
  14. Tsytovich N.A. Mekhanika gruntov [Soil Mechanics]. Moscow, Gosstroyizdat Publ., 1963.
  15. Sergeev E.M. Granulometricheskaya klassifikatsiya peskov [Granulometric Classification of Sands]. Vestn. MGU. Ser. biol. i pochv. [Proceedings of Moscow State University. Biology and Soil Series]. 1953, no. 12, pp. 49—56.
  16. Potapov A.D. Morfologicheskoe izuchenie peskov razlichnogo genezisa v inzhenerno-geologicheskikh tselyakh [Morphological Research of Sands of Various Geneses for Engineering Geology Purposes]. Moscow, PNIIIS [Production, Scientific and Research Institute of Engineering Surveying in Construction], 1982.
  17. Rebinder P.A. Strukturno-mekhanicheskie svoystva glinistykh porod i sovremennye predstavleniya fiziko-khimii kolloidov [Structural and Mechanical Properties of Clay Soils and the Present-day Ideas of Physics and Chemistry of Colloids]. Trudy Soveshchaniya po inzhenerno-geologicheskim svoystvam gornykh porod i metodam ikh izucheniya [Collected Works of Geo-engineering Properties of Rocks and Methods of Their Study]. Moscow, AN SSSR Publ., 1956, vol. 1, pp. 31—44.
  18. Mikhaylov N.V., Rebinder P.A. O strukturno-mekhanicheskikh svoystvakh dispersnykh i vysokomolekulyarnykh sistem [Structural Mechanical Properties of Disperse and High Molecular Systems]. Kolloidnyy zhurnal [Colloid Journal]. 1955, vol. 17, no. 2, pp. 112—119.
  19. Ter-Stepanyan G.I. O vliyanii formy i raspolozheniya chastits na protsess sdviga v gruntakh [Influence of Shape and Position of Partickes onto the Process of Shear of Soils]. Izv. AN ArmSSR [News of the Academy of Sciences of Armenian Soviet Socialist Republic]. 1948, vol. 1, no. 2, pp. 167—185.
  20. Gor’kova I.M. Strukturnye i deformatsionnye osobennosti osadochnykh porod razlichnoy stepeni uplotneniya i litifikatsii [Structural and Deformation-related Peculiarities of Sedimentary Rocks That Have Different Compaction and Lithification Values]. Moscow, Nauka Publ., 1966, 128 p.
  21. Durante V.A. Opyt issledovaniya plotnosti peskov metodom glubinnogo zondirovaniya [Practical Research into the Density of Soils Using Method of Deep Sounding]. Trudy Soveshchaniya po inzhenerno-geologicheskim svoystvam gornykh porod i metodam ikh izucheniya [Works of the Meeting Dedicated to the Geo-engineering Properties of Rocks and Methods of Their Study]. Moscow, AN SSSR Publ., 1956, vol. 1, pp. 249—258.
  22. Lysenko M.P. Sostav i fiziko-mekhanicheskie svoystva gruntov [Composition and Physical Mechanical Properties of Soils]. Moscow, Nedra Publ., 1972.
  23. Dudler I.V. Znachenie ponyatiya «plotnost’ — vlazhnost’» dlya izucheniya i otsenki fiziko-mekhanicheskikh svoystv peschanykh gruntov [Meaning of the “Density-Moisture Content” Notion for the Study and Assessment of Physical Mechanical Properties of Sandy Soils]. Voprosy inzhenernoy geologii [Issues of Engineering Geology]. Moscow, MISI Publ., 1977, 7 p.
  24. Platov N.A., Gor’kova I.M. Strukturno-mekhanicheskie osobennosti melkozernistykh i pylevatykh peskov [Structural and Mechanical Peculiarities of Small-grained and Dusty Sands]. Dokl. AN SSSR. Ser.geol. [Reports of the Academy of Sciences of the Union of Soviet Socialist Republics. Geology Series]. 1972, vol. 206, no. 5, pp. 1204—1206.
  25. Rebinder P.A., Segalova E.E. Novye problemy kolloidnoy khimii mineral’nykh vyazhushchikh materialov [ New Problems of Colloid Chemistry of Mineral Viscous Materials]. Priroda Publ., 1952, no. 12, pp. 22—28.
  26. Gor’kova I.M. Teoreticheskie osnovy otsenki osadochnykh porod v inzhenerno-geologicheskikh tselyakh [Theoretical Fundamentals of Assessment of Sedimentary Rocks for Geo-engineering .Purposes]. Moscow, Nauka Publ., 1966, 136 p.
  27. Gor’kova I.M. Fiziko-khimicheskie issledovaniya dispersnykh osadochnykh porod v stroitel’nykh tselyakh [Physical Chemical Research into Disperse Sedimentary Soils for Construction Purposes]. Moscow, Stroyizdat Publ., 1975, 151 p.
  28. Platov N.A., Gor’kova I.M. O prirode prochnosti melko- i srednezernistykh peschanykh porod razlichnogo geneticheskogo tipa [Character of Strength of Small and Mid-size Sandy Rocks of Different Genetic Origin]. Kolloidnyy zhurnal [Colloid Journal]. 1973, vol. 35, no. 1, pp. 57—62.
  29. Platov N.A., Gor’kova I.M. Tipy deformatsionnogo i reologicheskogo povedeniya peschanykh porod [Type of Deformation-related and Rheological Behavirour of Sandy Rocks]. Dokl. AN SSSR. Ser.geol. [Reports of the Academy of Sciences of the Union of Soviet Socialist Republics. Geology Series]. 1975, vol. 222, no. 2, pp. 456—458.
  30. Tsekhomskiy A.M. O stroenii i sostave plenki na zernakh kvartsevykh peskov [Structure and Composition of the Film Covering Grains of Quartz Sands]. Kora vyvetrivaniya [Residual Soil]. Moscow, 1959, AN SSSR Publ., no. 3, pp. 293—312.
  31. Lemmleyn G.G., Knyazev V.S. Opyt izucheniya oblomochnogo kvartsa [Research into Fragmental Quartz]. AN SSSR Publ., 1951, no. 4, pp. 99—101.
  32. Ziangirov R.S. Ob”emnaya deformiruemost’ glinistykh gruntov [3D Deformability of Clay Soils]. Moscow, Nauka Pbl., 1979, p. 164.
  33. Fadeev P.I. Peski SSSR [Sands of the USSR]. Moscow, MGU Publ., 1951, Part 1, 290 p.
  34. Deer W.A., Howie R.A., Zussman I. Rock-forming Minerals. 4. Framework Silicates. New York, Wiley, 1963.
  35. Baron L.I. Kharakteristika treniya gornykh porod [Characteristic of Rock Friction]. Moscow, Nauka Publ., 1967.
  36. Maslov N.N., Kotov M.F. Inzhenernaya geologiya [Engineering Geology]. Moscow, Stroyizdat Publ., 1971. 340 ð.
  37. Kabai J. The Compatibility of Sands and Sandy Gravels. Techn. University Budapest, 1968, vol. 63.

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THE ROLE OF THE "DENSITY - MOISTURE" OF SANDY SOILS IN FORMATION OF EFFICIENT STRESSES FROM THE PERSPECTIVE OF THE PHYSICOCHEMICAL THEORY

Vestnik MGSU 12/2012
  • Potapov Aleksandr Dmitrievich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Professor, Head, Department of Engineering Geology and Geoecology, 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 .
  • Potapov Ivan Aleksandrovich - Scientific and Research Institute of Emergency Healthcare named after N.V. Sklifosovskiy engineer, Scientific and Research Institute of Emergency Healthcare named after N.V. Sklifosovskiy, ; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Shimenkova Anastasiya Anatol'evna - Moscow State University of Civil Engineering (MGSU) engineer, Department of Engineering Geology and Geoecology, 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 104 - 110

The paper deals with the formation of limiting bulk densities of sandy soils of different origin against different values of humidity and varying structural features. The authors have identified that the optimum moisture content is typical for sands and clays exposed to mechanical compaction. The nature of this dependence is different from the one between the density and humidity of clay soils. These differences are driven by the peculiarities of formation of bound water shells in the event of low humidity. A linear dependence between the optimal humidity of sands and maximal molecular moisture capacity has been identified. The authors make a statement based on the proven de
pendence between the maximal molecular moisture capacity and the morphology of sands. Their statement is that the formation of bound water shells in the low humidity environment is dependent not only on the fineness of particles, but, to a higher extent, on the peculiarities of the shape and the nature of the surface of sand grains. Another important factor of impact on the density of sandy soils in the natural environment consists in their humidity.
Multiple researchers believe that the correlation between density and humidity of sands is to be the subject of research. It is noteworthy that limit densities of air-dried sands are to be assessed. Therefore, any sands have some particular bound water content, and the lower the intensity of treatment of sand particles, the higher the water content. The findings demonstrate that in most cases typical coagulatory and transitory contacts of non-saturated sands are to be considered in line with the ideas expressed by V.I. Osipov, as the above contacts determine the formation of effective stresses from the prospective of the physicochemical theory.

DOI: 10.22227/1997-0935.2012.12.104 - 110

References
  1. Osipov V.I. Fiziko-khimicheskaya teoriya effektivnykh napryazheniy v gruntakh [Physicochemical Theory of Effective Stresses in Soils]. IGE RAN [Institute of Geo-ecology of the Russian Academy of Sciences]. Moscow, IFZ RAN [Institute of Physics of the Earth (IPE)], 2012, 74 p.
  2. Potapov A.D., Potapov I.A., Shimenkova A.A. Nekotorye aspekty primenimosti k peschanym gruntam polozheniy fi ziko-khimicheskoy teorii effektivnykh napryazheniy [Particular Aspects of Applicability of Provisions of the Physical and Chemical Theory of Effective Stresses to Sandy Soils]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2012, no. 10, pp. 229—239.
  3. Potapov I.A., Potapov A.D., Shimenkova A.A. Formirovanie raznykh tipov energeticheskikh kontaktov v peschanykh gruntakh v aspekte fi ziko-khimicheskoy teorii effektivnykh napryazheniy [Formation of Different Types of Energy Contacts in Sandy Soils in the Framework of the Physicochemical Theory of Effective Stresses]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2012, no. 11, pp. 210—218.
  4. Potapov I.A., Shimenkova A.A., Potapov A.D. Zavisimost’ suffozionnoy ustoychivosti peschanykh gruntov razlichnogo genezisa ot tipa fi l’trata [Dependence of Suffosion Stability of Sandy Soils of Various Geneses on the Type of Filtrate]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2012, no. 5, pp. 79—86.
  5. Potapov A.D. Morfologicheskoe izuchenie peskov razlichnogo genezisa v inzhenerno-geologicheskikh tselyakh [Morphological Research of Sands of Various Geneses for Engineering Geology Purposes]. Moscow, PNIIIS [Production, Scientific and Research Institute of Engineering Surveying in Construction], 1982, 243 p.
  6. Dudler I.V. Znachenie ponyatiya «plotnost’ — vlazhnost’» dlya izucheniya i otsenki fi ziko-mekhanicheskikh svoystv peschanykh gruntov [Meaning of the Notion of “Density-Humidity” in the Mastering and Assessment of Physical-mechanical Properties of Sandy Soils]. Voprosy inzhenernoy geologii [Issues of Engineering Geology]. Moscow, MISI Publ., 1977, 7 p.
  7. Anan’ev V.P., Potapov A.D. Inzhenernaya geologiya [Engineering Geology]. Moscow, Vyssh. shk. publ., 2008, 260 p.
  8. Lysenko M.P. Sostav i fiziko-mekhanicheskie svoystva gruntov [Composition and Physical-Mechanical Properties of Soils]. Moscow, Nedra Publ., 1972, 272 p.
  9. Kabai J. The Compatibility of Sands and Sandy Gravels. Techn. University Budapest. 1968, vol. 63, 6 p.
  10. Trofimov V.T., editor. Gruntovedenie [Soil Science]. Moscow, Nauka Publ., 2005, 1024 p.

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