Production and Application of Schungite and “Termin” Highly Dispersed Powders as Mineral Fillers for the Rubber Industry

Sheverdyaev, O. N.; Bobrov, A. P.; Kornev, A. N.; Sheverdyaeva, N. V.; Chernik, G. G.

doi:10.1177/0307174x0703400806

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2023

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“…It was found in [Vysotskaya et al, 2015] that the total number of active centers on the surface of shungite is several times higher than in the case of limestone. The authors of [Sheverdyaev et al, 2007] also found that reducing the particle size of shungite to ultrafine particles can lead to an improvement in the properties of bitumen binders.…”

Section: Introductionmentioning

confidence: 99%

Mechanochemically Activated Shungite as an Additive to Improve Bitumen Characteristics

Zhambolova,

Ongarbayev,

Kenzhegaliyeva

et al. 2023

J. Ecol. Eng.

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One of the urgent problems of improving the quality of road surfaces is to improve the properties of bitumen used as binders. For this purpose, various modifiers are used, which are mainly obtained synthetically. Modification of bitumen with natural raw materials is favorable from an economic and environmental points of view. The modification of road oil bitumen with samples of shungite from the Koksu deposit (Kazakhstan) was carried out in the work. The shungite samples were previously crushed by mechanochemical activation to improve their surface and adhesive properties. As a result of modification with shungite, an increase in the softening temperature and a decrease in the extensibility and penetration of bitumen were observed. The optimal amount of added shungite turned out to be 1 mass %. The shungite of carbonate origin on a mineral basis is more favorable as a modifier compared to samples of shale origin.

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Section: Introductionmentioning

confidence: 99%