Reactivity of dispersed schungite to bitumen

Some aspects of the use of schungite mineral powder to obtain effective compositions based on bitumen are considered in this paper. The high reactivity of dispersed schungite to bitumen is shown. The studies are performed by studying the water extracts from suspensions, as well as the state of the s...

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Bibliographic Details
Published in:Journal of physics. Conference series 2019-11, Vol.1353 (1), p.12070
Main Authors: Vysotskaya, M A, Kuznetsov, D A, Lukash, E A, Kharlamov, E V
Format: Article
Language:English
Subjects:
Adsorption
Asphalt
Binders (materials)
Bitumens
Composition effects
Concrete pavements
Dispersion
Physics
Spectrophotometry
Surface chemistry
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Summary:Some aspects of the use of schungite mineral powder to obtain effective compositions based on bitumen are considered in this paper. The high reactivity of dispersed schungite to bitumen is shown. The studies are performed by studying the water extracts from suspensions, as well as the state of the surface of the powders and the concentration of active surface centers using the indicator method of fixing the distribution of adsorption sites (DAS) in the spectrophotometric version. Based on the analysis of the results obtained it is concluded that the molecules of organic substances contained in bitumen can actively interact with the surface of schungite. At the interface between the binder and schungite the processes take place that are accompanied by the formation of a strong adsorption layer which is necessary for the formation of a high-quality and durable composite. The presented studies of asphalt binders confirm the conclusions and show that asphalt concrete pavements using shungite mineral powder will be able to work in a wider temperature range both for high summer and low winter temperatures.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1353/1/012070