Effect of styrene/butadiene block copolymer composition on the properties of polymer bitumen binders
https://doi.org/10.21285/achb.971
EDN: QCJMIR
Abstract
Paving bitumens intended for use in the construction of road, bridge, and airfield pavements do not meet the requirements for crack resistance, heat resistance, elasticity, and adhesion to the surface of mineral materials. Pavement performance can be improved by the addition of thermoplastic elastomers to paving bitumens. These factors determine the relevance of research in this area. This study focused on obtaining polymer bitumen compositions by the addition of styrene/butadiene block copolymers and a plasticizer to paving bitumen, as well as studying some of its properties. Industrial oil I-40 produced by Angarsk Petrochemical Company was used as the plasticizer. BND 100/130 bitumen and styrene/butadiene block copolymers produced in Russia and China were tested. The infrared spectrum of the copolymers exhibits styrene-related absorption bands at 3061, 3024, 1640, 1601, 1450, 1493, 756, 730, and 659 cm-1; butadiene segments are recorded around 994, 964, and 911 cm-1. The elemental analysis shows that the content of butadiene segments is 3.1 times higher in the Chinese copolymer than in the copolymer produced in Russia. It was found that with the increasing percentage of copolymer content in the paving bitumens, the dynamic viscosity and extensibility of the composition increase, and its brittleness temperature decreases. With the growing content of butadiene units in the copolymer, dynamic viscosity, softening and brittleness temperatures, penetration, and extensibility increase; for the Chinese copolymer, these parameters are higher than those of the copolymer produced in Russia.
About the Authors
A. А. Krivoshein
Irkutsk National Research Technical University
Russian Federation
Russian Federation
Andrey A. Krivoshein, Postgraduate Student
83, Lermontov St., Irkutsk, 664074
N. S. Shaglaeva
Irkutsk National Research Technical University
Russian Federation
Russian Federation
Nina S. Shaglaeva, Dr. Sci. (Chemistry), Professor
83, Lermontov St., Irkutsk, 664074
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Review
For citations:
Krivoshein A.А., Shaglaeva N.S. Effect of styrene/butadiene block copolymer composition on the properties of polymer bitumen binders. Proceedings of Universities. Applied Chemistry and Biotechnology. 2025;15(2):262-268. (In Russ.) https://doi.org/10.21285/achb.971. EDN: QCJMIR
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