On Complex Modification of Asphalt Concrete Microstructure by Divinyl-Styrene Thermoelastoplastic
A. V. Zagorodnyaya
SEI HE LPR «Lugansk State University named after Volodymyr Dahl»
Abstract: Results of study of stability in process storage of bitumen-polymer binders based on divinyl-styrene copolymer and ethylene glycidyl methacrylate are given. It has been found that an increase in polymer content leads to a loss of stability of the bitumen-polymer binder, while there is a concentration of polymer to which the modified bitumen retains relatively high stability, due to the mechanisms of their aggregative and sedimentation stability. The data obtained confirm the existence of a relationship between the stability of the polymer-bitumen binder and the brand, and therefore the consistency, of the initial bitumen. Polymer-bitumen binders modified with 2% Elvala AM and 3% DST 30-01, structured with 30% technical sulfur, have proved to be the highest stability. The stability of BMP depends on the consistency of the original bitumen and decreases with the use of bitumen of lower penetration (and a higher softening temperature). The introduction of the polymer leads to an increase in the viscosity of BMP in the range of technological temperatures, the greater, the higher the polymer concentration and the higher the consistency of bitumen.
Keywords: bitumen-polymer binder, stability, penetration, softening point, elasticity.
Pages: 68-73.
Link for citation: Zagorodnyaya, A. V. On Complex Modification of Asphalt Concrete Microstructure by Divinyl-Styrene Thermoelastoplastic. – Text : electronic. – In: Proceeding of the Donbas National Academy of Civil Engineering and Architecture. – 2021. – Issue 2021-1(147) Modern building materials. – Р. 68-73. – URL: https://donnasa.ru/publish_house/journals/vestnik/2021/2021-1(147)/st_08_zagorodnyaya.pdf (date of access: 15.10.2024). (in Russian)
Issue 2021-1 (147)Journal: Proceeding of the Donbas National Academy of Civil Engineering and Architecture
Publish house: Donbas National Academy of Civil Engineering and Architecture