RESEARCH OF THE ADSROPTION-SOLVATE LAYER OF BITUMEN ON THE SURFACE OF THE MINERAL FILLER
Pages 159 - 167
In the article, the authors substantiate the employment of the rheological method of identifi cation of the thickness of the bitumen layer formed on the surface of the mineral component. The
analysis of existing methodologies of assessment of the physical and chemical activity of mineral
components in relation to the bitumen has proven the unavailability of any universal methodology to
substantiate the use of mineral fillers to be added to the asphalt concrete. The authors have demonstrated
that identification of thickness considered as a kinetic and an adsorption layer requires
the employment of nothing else but the bitumen. Viscosity measurements of disperse systems composed
of bitumen and mineral components are to be taken at different temperatures.
The filling range of the above systems satisfying the Einstein equation (under 5% by volume)
has also been identified. The nature of dependence between the viscosity fluctuation pattern of the
disperse systems composed of bitumen and the mineral filler, on the one hand, and the degree of filling
and the temperature, on the other hand, has been identified. The nature of dependence between
the viscosity fluctuation of bitumen and the castor oil and their temperature has been identified, as
well. The authors have also calculated the temperature at which the viscosity of bitumen reaches its
minimum value (T = 220 °C). The authors have demonstrated that the mineral components under
research produce only a kinetic layer that turns thinner as the temperature goes up, whereas no
adsorption layer can be identified experimentally through the employment of the rheological method.
Comparison of the data obtained by the authors with the theoretical findings demonstrates
their sufficient convergence, reliable repeatability of the proposed method of identification of thickness
of the structured bitumen, and physical and chemical activity of the mineral component. The
data presented herein have also proven the inexpediency of application of the methodology of
identifi cation of adhesion between bitumen and the mineral filler according to State Standard GOST
11508-74*.
DOI: 10.22227/1997-0935.2012.11.159 - 167
- Korolev E.V., Beregovoy V.A., Bormotov A.N., Eremkin A.I. Degradation Model and Method of Projecting the Durability of Composites. Proceedings of the International Conference «Concrete Durability: Achievement and Enhancement». UK, Scotland, University of Dundee, pp. 345—356.
- Proshin A.P., Korolev E.V., Boltyshev S.A., Koroleva O.V. Vybor kineticheskoy modeli destruktsii kompozitsionnykh materialov. Parametry protsessa [Selection of a Kinetic Model of Decomposition of Composite Materials. Process Parameters]. Izvestiya vuzov. Stroitel’stvo [News of Institutions of Higher Education. Construction]. 2005, no. 3, pp. 32—36.
- Gar’kina A.I., Danilov A.M., Korolev E.V. Vybor kineticheskoy modeli destruktsii kompozitsionnykh materialov. Parametry protsessa [Selection of a Kinetic Model of Decomposition of Composite Materials. Process Parameters]. Obozrenie prikladnoy i promyshlennoy matematiki [Review of Applied and Industrial Mathematics]. 2008, no. 3, vol. 15, pp. 459—460.
- Bakhrakh G.S. K otsenke tolshchiny adsorbtsionno-sol’vatnogo sloya bitumov na poverkhnosti chastits [About the Assessment of Thickness of the Adsorption-solvate Layer of Bitumen on the Surface of Particles]. Kolloidnyy zhurnal [The Colloid Journal]. 1969, no.1, vol 39, pp. 8—12.
- Rotational viscometer MCR 101. Research and Educational Center for Nanotechnologies. Available at: http://www.nocnt.ru/index.php/ru/oborudovanie/laboratoriya-fiziko-himicheskih-svoistv/17-viskozimetr-mcr101. Date of access: 09.25.2012.
- Pokid’ko B.V. Adsorbtsionnoe modifi tsirovanie sloistykh silikatov dlya polucheniya polimer-silikatnykh nanokompozitov [Adsorptive Modifi cation of Layered Silicates for Recovery of Polymer-Silicate Nanocomposites]. Moscow, 2004, 117 p.
- Kukolev G.V. Khimiya kremniya i fi zicheskaya khimiya silikatov [Chemistry of Silicon and Physical Chemistry of Silicates]. Moscow, Vysshaya shkola publ., 1966, 232 p.
- Bazhenov Yu.M., Korolev E.V., Evstifeeva I.Yu., Vasil’eva O.G. Nanomodifi tsirovannye korrozionno-stoykie sernye stroitel’nye materialy [Nano-modifi ed Corrosion-resistant Sulfuric Construction Materials]. Moscow, RGAU-MSHA Publ., 2008, 167 p.
- Grushko I.M., Korolev I.V, Borsch I.M., Mishchenko G.M. Dorozhno-stroitel’nye materialy [Road Building Materials]. Moscow, Transport Publ., 1991, 357 p.
- Gezentsvey L.B. Asfal’tovyy beton iz aktivirovannykh mineral’nykh materialov [Asphalt Concrete Made of Activated Mineral Materials]. Stroyizdat Publ., 1971, 255 p.
- Gridchin A.M. Osobennosti svoystv poverkhnosti kislykh mineral’nykh materialov dlya asfal’tobetonov [Peculiarities of Surface Properties of Acidic Mineral Materials for Asphalt Concretes]. Stroitel’nye materialy [Construction Materials]. 2007, no. 8, pp. 56—57.
- Shlegel’ I.F. Ispol’zovanie legkogo poristogo zapolnitelya v sostave asfal’tobetonov [The Use of the Lightweight Porous Filler in Asphalt Concrete]. Avtomobil’nye dorogi [Motor Roads]. 2008, no. 6, pp. 115—116.
- Zlotarev V.A. Ob otsenke adgezii bituma u poverkhnosti mineral’nogo materiala [Assessment of the Adhesive Strength of Bitumen at the Surface of the Mineral Material]. Avtomobil’nye dorogi [Motor Roads]. 1995, no. 12, pp. 13—15.
- Boguslovskiy A.M. Osnovy reologii asfal’tobetona [Fundamentals of Rheology of Asphalt Concrete]. Moscow, Vysshaya shkola publ., 1972, 200 p.