Улучшение деформационно-прочностных характеристик  битума модифицированием микропорошками кокса

Е.К. Онгарбаев; А.Б. Жамболова; А.Р. Кенжегалиева; Д.Б. Әбдіхан; Ә.Ж. Қалыбеков

doi:10.18321/cpc24(1)59-67

Authors

Y.K. Ongarbayev Al-Farabi Kazakh National University, Al-Farabi Ave., 71, Almaty, Kazakhstan; Institute of Combustion Problems, Bogenbai Batyr Str., 172, Almaty, Kazakhstan
A.B. Zhambolova Institute of Combustion Problems, Bogenbai Batyr Str., 172, Almaty, Kazakhstan
A.R. Kenzhegaliyeva Institute of Combustion Problems, Bogenbai Batyr Str., 172, Almaty, Kazakhstan
D.B. Abdikhan Al-Farabi Kazakh National University, Al-Farabi Ave., 71, Almaty, Kazakhstan; Institute of Combustion Problems, Bogenbai Batyr Str., 172, Almaty, Kazakhstan
A.Zh. Qalybekov Al-Farabi Kazakh National University, Al-Farabi Ave., 71, Almaty, Kazakhstan

DOI:

https://doi.org/10.18321/cpc24(1)59-67

Keywords:

petroleum coke, coal coke, petroleum bitumen, micropowders, deformation-strength properties

Abstract

The introduction of new technologies in the production of bitumen using modifiers based on carbon materials allows for improving their quality. One of such modifiers is coke of petroleum or coal origin. The aim of the work was to improve the deformation and strength characteristics of petroleum road bitumen BND 100/130 by modifying it with coke micropowders. In the work, mechanochemical grinding of Shubarkol field coal coke and Pavlodar Petrochemical Plant LLC petroleum coke samples was carried out and the effect of the obtained coke micropowders on the deformation and strength properties of petroleum bitumen was determined. The fatigue strength of modified bitumen binders was assessed using the linear amplitude scanning technique based on the continuous viscoelastic fracture model. Bitumen with 0.5 wt.% petroleum microcoke can be used for conditions with high short-term loads, but is not suitable for long-term cyclic loads. Bitumen with 0.5 wt.% coal microcoke retains its structure better under large deformations, but is inferior in strength and is suitable for flexible operating conditions. Bitumen with 1 wt.% petroleum microcoke offers an optimal balance of strength and fracture resistance and is most promising for long-lasting road surfaces.

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