RESEARCH OF THE ADSROPTION-SOLVATE LAYER OF BITUMENON THE SURFACE OF THE MINERAL FILLER

Vestnik MGSU

Pozdnyakov Mikhail Konstantinovich¹  Korolev Evgeniy Valerevich²  Inozemtsev Sergey Sergeevich³ 

[1] Moscow State University ofCivil Engineering (MGSU);

[2] Moscow State University of Civil Engineering(MGSU);

[3] Moscow State University of Civil Engineering (MGSU);

关键词: physical and chemical activity;    the boundary of the phase-to-phase interaction;    dispersion system;    Einstein equation;    adsorption layer;    kinetic layer;    rheology;   

DOI  :  

来源: DOAJ

【 摘 要 】

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. Theanalysis of existing methodologies of assessment of the physical and chemical activity of mineralcomponents in relation to the bitumen has proven the unavailability of any universal methodology tosubstantiate the use of mineral fillers to be added to the asphalt concrete. The authors have demonstratedthat identification of thickness considered as a kinetic and an adsorption layer requiresthe employment of nothing else but the bitumen. Viscosity measurements of disperse systems composedof 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 thedisperse systems composed of bitumen and the mineral filler, on the one hand, and the degree of fillingand the temperature, on the other hand, has been identified. The nature of dependence betweenthe viscosity fluctuation of bitumen and the castor oil and their temperature has been identified, aswell. The authors have also calculated the temperature at which the viscosity of bitumen reaches itsminimum value (T = 220 °C). The authors have demonstrated that the mineral components underresearch produce only a kinetic layer that turns thinner as the temperature goes up, whereas noadsorption layer can be identified experimentally through the employment of the rheological method.Comparison of the data obtained by the authors with the theoretical findings demonstratestheir sufficient convergence, reliable repeatability of the proposed method of identification of thicknessof the structured bitumen, and physical and chemical activity of the mineral component. Thedata presented herein have also proven the inexpediency of application of the methodology ofidentifi cation of adhesion between bitumen and the mineral filler according to State Standard GOST11508-74*.

【 授权许可】

Unknown