RESEARCH OF BUILDING MATERIALS

Development of nanomodifiers and research into their influence on the properties of bituminous binders

Vestnik MGSU 10/2013
  • Inozemtsev Sergey Sergeevich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, test engineer, Research and Educational Center on "Nanotechnology", Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; +7-499-188-04-00; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Korolev Evgeniy Valer'evich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Professor, Adviser, Russian Academy of Architectural and Building Sciences (RAACS), director, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; +7-499-188-04-00; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 131-139

Nine types of nanomodifiers designated for asphalt binder are considered in the article. Three mineral material types of are considered, including dolomite powder MP-1, diatomite and activated silica sand. As the second component cotton oil, synthetic rubber and a colloid solution of ferric (III) hydroxide and silica acid are selected. The results of the study disclose the influence of nanomodifiers on needle penetration depth at 0 °C and 25 °C, as well as the softening temperature, brittleness properties and stability after aging. The penetration depth is a criterion of the ability of the bitumen to resist mechanical stress, while brittleness and / or softening are the criteria of its ability to resist temperature. The generalized effectiveness criterion of bitumen modifiers is also taken into account. The generalized effectiveness criterion of nanomodifiers was revealed based on the obtained data. One of the most effective modifiers is diatomite with a colloid solution of ferric hydroxide (III) and silica acid. Dolomite powder with sol and diatomite with synthetic rubber (layer 70 nm) are promising methods of modification, though they require optimization in terms of their technology and formulations.

DOI: 10.22227/1997-0935.2013.10.131-139

References
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IDENTIFICATION OF THICKNESS OF A COMPOSITE MATERIAL AS PART OF THE QM GLUED CONNECTION OF WOODEN ELEMENTS

Vestnik MGSU 8/2012
  • Linkov Nikolay Vladimirovich - Moscow State University of Civil Engineering Candidate of Technical Sciences, Department of Timber and Plastic Structures 8 (495) 287-49-14, ext. 31-11, Moscow State University of Civil Engineering, 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 125 - 130

The principal objective of the research project is to identify the thickness of an advanced
composite adhesive material used as part of a glued connection of wooden surfaces. The active
ingredients of the proposed adhesive material include an epoxy matrix and a glass fiber fabric. The
author has analyzed the bearing capacity and deformability of the proposed connection in relation
to the thickness of the composite material. The author used the methodology of assessment of the
bearing capacity of wooden structures developed by professor Yu.M. Ivanov. For the purposes of
development of optimal parameters of the "QM Glued" connection, the author identified the optimal
ratio of b, or width of the surface of connected elements, and the thickness of the composite material:
t = 1/40 b.

DOI: 10.22227/1997-0935.2012.8.125 - 130

References
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  2. Shilin A.A., Pshenichnyy V.A., Kartuzov D.V. Usilenie zhelezobetonnykh konstruktsiy kompozitsionnymi materialami [Strengthening of Reinforced Concrete Structures by Composite Materials]. Moscow, Stroyizdat Publ., 2004.
  3. Shilin A.A., Pshenichnyy V.A., Kartuzov D.V. Vneshnee armirovanie zhelezobetonnykh konstruktsiy kompozitsionnymi materialami [Outside Reinforcement of Reinforced Structures by Composite Materials]. Moscow, Stroyizdat Publ., 2007.
  4. Blaschko M. and Zilch K. Rehabilitation of Concrete Structures with CFRP Strips Glued into Slits. Proceedings of the 12th International Conference on Composite Materials. Paris, 1999, July 5-9.
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  8. Blaschko M., Niedermeier R., Zilch K. Saadatmanesh H. and Ehsani, M.R., editors. Bond Failure Modes of Flexural Members Strengthened with FRP. Proceedings of Second International Conference on Composites in Infrastructures, Tucson, Arizona, 1998, pp. 315—327.
  9. Lin’kov, N.V., Filimonov E.V. Modelirovanie sredstvami PK SCAD soedineniya derevyannykh elementov kompozitsionnym materialom na osnove epoksidnoy matritsy i steklotkani [Modeling of Wooden Elements Connected by a Composite Material Based on Epoxy Matrix and Fiberglass Using PC SCAD Software]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2009, Special Issue no. 1, pp. 50—53.
  10. Lin’kov N.V., Filimonov E.V. Prochnost’ i deformativnost’ kompozitsionnogo materiala na osnove epoksidnoy matritsy i steklotkani [Strength and Deformability of the Composite Material Based on the Epoxy Matrix and Fiberglass]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2010, no. 1, pp. 235—243.

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