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RESEARCH OF BUILDING MATERIALS

Thermogravimetric analysis of phase transitions in cement compositions mixed by sodium silicate solution

Вестник МГСУ 1/2014
  • Fedosov Sergey Viktorovich - Ivanovo State Polytechnic University (IVGPU) Doctor of Technical Scienc- es, Professor, member, Russian Academy of Architectural and Building Sciences (RAASN), President, Ivanovo State Polytechnic University (IVGPU), office 305, 20 8-th Marta street, Ivanovo, 153037, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Akulova Marina Vladimirovna - Ivanovo State Polytechnic University (IVGPU) Doctor of Technical Sciences, Professor, counselor, Russian Academy of Architectural and Building Sciences (RAASN), head, Department of Con- struction Materials Science, Special Technologies and Technological Facilities department, Ivanovo State Polytechnic University (IVGPU), office 305, 20 8-th Marta street, Ivanovo, 153037, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Slizneva Tatyana Evgenyevna - Ivanovo State Polytechnic University (IVGPU) Doctor of Technical Sciences, Associate Professor, Department of Higher and Applied Mathematics, Statistics and Information Technologies, Ivanovo State Polytechnic University (IVGPU), office 305, 20 8-th Marta street, Ivanovo, 153037, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Potemkina O.V. - Ivanovo State Polytechnic University (IVGPU) Doctor of Technical Sciences, doctoral student, Ivanovo State Polytechnic University (IVGPU), office 305, 20 8-th Marta street, Ivanovo, 153037, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .

Страницы 111-118

This paper presents a study of the capability to modify cement by mechanical activation of sodium silicate water solution. Admixtures or blends of binding agents were employed for modifying concrete properties. The liquid glass is applied to protect from chemically or physically unfavorable environmental impacts, such as acidic medium and high temperature. The sodium silicate is a high-capacity setting accelerator. The increasing of the liquid glass proportion in the mix leads to the degradation of the cement paste plasticity and for this reason it is necessary to reduce the amount of liquid glass in the cement paste. The activation of dilute water solution of sodium silicate into rotary pulsating apparatus directly before tempering of the cement paste is an effective way to decrease mass fraction of liquid glass in the cement paste. The results of the combined influence of liquid glass and mechanical activation on physicochemical processes taking place in cement stone are represented in this research. Thermogravimetric analysis was used in order to study cement blends. Thermogravimetric analysis of modified cement stone assays was performed by thermo analyzer SETARAM TGA 92-24. The results of the analysis of phase transition taking place under high-temperature heating of cement stone modified by the mechanical activation of the water solution of the sodium silicate were introduced. Thermograms of cement stone assays were obtained at different hardening age. The comparison of these thermograms allows us to come to a conclusion on the formation and the retention during long time of a more dense structure of the composite matrix mixed by the mechanical activation of sodium silicate water solution. The relation between the concrete composition and its strength properties was stated. Perhaps, the capability of modified concrete to keep calcium ions in sparingly soluble hydrosilicates leads to the increase in its durability and corrosion resistance.

DOI: 10.22227/1997-0935.2014.1.111-118

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DEVELOPMENT OF HYDRAULIC GYPSUM THAT CONTAINS CEMENTS THAT HAVE SULPHATED CLINKER PHASES

Вестник МГСУ 5/2012
  • Mikheenkov Mikhail Arkad'evich - Ural Federal University named after the first President of Russia B.N. Yeltsin (UrFU) Candidate of Technical Sciences, Associated Professor +7 (343) 375-47-17, Ural Federal University named after the first President of Russia B.N. Yeltsin (UrFU), 19 Mira st., Ekaterinburg, 620002, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Kabirov Il'dar Zhavdatovich - Ural Federal University named after the first President of Russia B.N. Yeltsin (UrFU) student, Ural Federal University named after the first President of Russia B.N. Yeltsin (UrFU), 19 Mira st., Ekaterinburg, 620002, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Mikheenkov Vyacheslav Mikhaylovich - Ural Federal University named after the first President of Russia B.N. Yeltsin (UrFU) student +7 (343) 348-63-04, Ural Federal University named after the first President of Russia B.N. Yeltsin (UrFU), 19 Mira st., Ekaterinburg, 620002, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .

Страницы 107 - 113

In the article, the authors consider the feasibility of development of water-hardened gypsum that is capable of hardening in the water. The gypsum in question is made of the gypsum binding material, sulphated Portland cement, and granulated blast-furnace slag. The gypsum developed hereunder has a softening coefficient over 1 while the building gypsum content exceeds 75 %.

DOI: 10.22227/1997-0935.2012.5.107 - 113

Библиографический список
  1. Korovyakov V.F. Perspektivy primeneniya vodostoykikh gipsovykh vyazhushchikh v sovremennom stroitel’stve [Prospects for the Application of Water-resistant Gypsum Binders in Contemporary Construction Projects]. Proceedings of the All-Russian Seminar “Improvement of Efficiency of Production and Application of Gypsum Materials and Products”. Moscow, 2002, pp. 51—56.
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  6. Patent. 2642 Ukraine, C04B 11/28 MPK6, C04B 28/14. Gipsovoe vyazhushchee povyshennoy prochnosti i vodostoykosti [Gypsum Binder with Water-Resistant Properties]. Applicant and patentee V. Babushkin, no. 2003076552; published 15.07.04, newsletter no. 7, 3 p.
  7. Mikheenkov M.A. Pressovanie kak sposob povysheniya vodostoykosti gipsovogo vyazhushchego [Compaction as a Method of Improving the Water Resistance of a Gypsum Binder]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2009, no. 4, pp. 158—162.
  8. Pat. 2415093 Russian Federation: MPK7 C04B 11/24. Sposob polucheniya vodostoykogo gipsovogo vyazhushchego [How to Obtain a Water Resistant Gypsum Binder]. Author: Mikheenkov M.A. Holder: Mikheenkov M.A. 2009138170/03; published 27.03.2011.
  9. Babushkin V.I., Matveev G.M., Mchedlov-Petrosyan O.M. Termodinamika silikatov [Thermodynamics of Silicates]. Moscow, Stroyizdat Publ., 1986. 408 p.

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PROPERTIES OF CEMENT COMPOSITES BY THE MECHANOACTIVATION OF SOLUTION OF THE SODIUM SILICATE

Вестник МГСУ 1/2012
  • Fedosov Sergey Viktorovich - Ivanovo State Architecturally-building University Acad. of RAASN, Doctor tech. Sciences, Professor, rector of +7-(4932)-32-85-40, Ivanovo State Architecturally-building University, 20, 8-th March, Ivanovo, Russia, 153037; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Akulova Marina Vladimirovna - Ivanovo State University of Architecture and Civil Engineering (IGASU) Doctor of Technical Sciences, Counselor of RAACS, Professor, Chair, Department of Production of Construction Materials, Ivanovo State University of Architecture and Civil Engineering (IGASU), 20 8ogo Marta St., Ivanovo, 153037, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Slizneva Tatjana Evgenjevna - Ivanovo State Architecturally-building University candidate tech. Sciences, Associate Professor of Higher and Applied mathematic department +7-(4932)-38-40-20, Ivanovo State Architecturally-building University, 20, 8-th March, Ivanovo, 153037, Russia; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Akhmadulina Juliya Sergeevna - Ivanovo State Architecturally-building University Assistant of Higher and Applied mathematic Department +7-(4932)-38-40-20, Ivanovo State Architecturally-building University, 20, 8-th March, Ivanovo, 153037, Russia; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Padokhin Valery Alekseevich - Institute of solution chemistry RAS Doctor tech. Sciences, Professor, Senior staff scientist, Head of the laboratory Chemistry and Technology of Non-linear Processes +7-(4932)-33-62-64, Institute of solution chemistry RAS, 1, Akademicheskaja, Ivanovo, 153045, Russia; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Bazanov Aleksandr Vladimirovich - Institute of solution chemistry RAS candidate tech. Sciences, Scientific associate of the laboratory Chemistry and Technology of Non-linear Processes +7-(4932)-30-78-97, Institute of solution chemistry RAS, 1, Akademicheskaja, Ivanovo, 153045, Russia; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .

Страницы 57 - 62

Mixing of cement by the mechanoactivation of the sodium liquid glass solution resulted in increasing of the heat stability and the compressive and flexural strengths of cement stone and reducing of the water adsorption. These data point to compacting of cement stone structure.

DOI: 10.22227/1997-0935.2012.1.57 - 62

Библиографический список
  1. Gorlov J.P., Merkin A.P., Zeiphman M.I., Toturbiev B.D. Zharostojkie betony na osnove kompozicij iz prirodnyh i tehnogennyh stekol [Heat-resistant concrete on basis of formulation of the natural and anthropogenic glasses]. Moscow, Metallurgia, 1974, 151 p.
  2. Ivobotenko B.A., Iljinskiy N.F., Kopylov I.P. Planirovanie jeksperimenta v jelektromehanike [The planning an experiment in the electromechanics], Moscow, Energy, 1975, 184 p.
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RESEARCH OF EARLY STRUCTURE FORMATION PROCESS OF CONCRETE WHERE CONCRETE WASTE ARE USED AS CRUSHED STONE

Вестник МГСУ 1/2012
  • Puljaev Sergej Mihajlovich - Moscow State University of Civil Engineering (MGSU) Candidate of Engineering Sciences (PhD), Prof +7-(499)-188-01-02, Moscow State University of Civil Engineering (MGSU), 26, Jaroslavskoe shosse, Moskow, 129337, Russia; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Kaddo Maria Borisovna - Moscow State University of Civil Engineering (MGSU) Candidate of Engineering Sciences (PhD), Prof +7-(499)-183-35-29, Moscow State University of Civil Engineering (MGSU), 26, Jaroslavskoe shosse, Moskow, 129337, Russia; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Puljaev Ivan Sergejevich - Research Institute of Transport Construction (TSNIIS) Candidate of Engineering Sciences (PhD), Senior staff scientist +7-(499)-189-33-45, Research Institute of Transport Construction (TSNIIS), 1, Kolskaya str., Moskow, 129329, Russia; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .

Страницы 68 - 71

The process of early structure formation that occurs in hardening concrete where concrete waste are used as coarse aggregate is examined in this article.

DOI: 10.22227/1997-0935.2012.1.68 - 71

Библиографический список
  1. Bazhenov J.M., Gorchakov G.I., Alimov L.A., Voronin V.V. Povyshenie dolgovechnosti betona i zhelezobetonnyh konstrukcij v surovyh klimaticheskih uslovijah [Increase of durability of concrete and ferroconcrete designs in severe environmental conditions]. Moscow, MISI, 1984.
  2. Bazhenov J.M., Gorchakov G.I., Alimov L.A., Voronin V.V. Strukturnye harakteristiki betonov [Structural descriptions of concretes]. Beton i zhelezobeton [Concrete and reinforced concrete], 1972, ¹ 9.
  3. Gorchakov G.I., Alimov L.A., Voronin V.V., Sobolev G.M. Princip optimizacii sostavov betonov dlja jenergeticheskogo stroitel'stva s uchetom strukturnyh harakteristik [Principle of optimization of compositions of concretes for power building taking into account structural descriptions]. Jenergeticheskoe stroitel'stvo : sb. nauchnyh trudov [Energy construction, Collection of scientific works], ¹ 9, 1974.

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