The Likely Chemical Processes in the Bitumen with its Modifications by «Elvaloy AM» in the Presence Polyphosphorous Acid
Abstract: This article is devoted to the study of the reactions of bitumen components with the modifier termopolymer «Elvaloy AM» and polyphosphoric acid (PFC) as a powerful dehydrating and condensing agent. As a result of these reactions, the efficiency of modifying bitumen with Elvaloy AM using polyphosphoric acid (PFC) increases. Bitumen is a complex system of oils, resins, asphaltenes, carbenes and carbides. Polycyclic aromatic and naphthenic structures of resins and asphaltenes contain a certain number of heterocycles (S, N). Resins include asphaltic and carboxylic acids and their anhydrides up to 1 %. Small amounts contain carbonyl, ester, hydroxyl and amino groups. «Elvaloy AM» – termopolymer of ethylene glycidylacrylate, contains 5 % of epoxy groups (determined in chloroform solution according to DSTU 2093-92 «Epoxy-dianovi neotverzheni resins»). The manufacturer (Dupont, USA) does not give the characteristics of the termopolymer. Based on the name and content of the epoxy groups, he article presents a structural fragment of «Elvaloy AM» and a methacrylate fragment due to the availability of glycidyl methacrylate, which is produced on an industrial scale.
Keywords: bitumen, modifier termopolymer «Elvaloy AM», glycidyl methacrylate, polyphosphoric acid, esterification, condensation, alcoholization, polymerization, dehydration, epoxy groups, radicals, bituminous polymer binder (BPВ).
Pages: 60-67.
For citation: Samojlova, Ye. E.; Bratchun, V. I.; Gulyak, D. V. [et al.]. The Likely Chemical Processes in the Bitumen with its Modifications by «Elvaloy AM» in the Presence Polyphosphorous Acid. – Text : electronic. – In: Proceeding of the Donbas National Academy of Civil Engineering and Architecture. – 2021. – Issue 2021-1(147) Modern building materials. – Р. 60-67. – URL: https://donnasa.ru/publish_house/journals/vestnik/2021/2021-1(147)/st_07_samoylova_bratchun_gulyak_dolya.pdf (date of access: 19.11.2024). – ISSN 2519-2817.
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
Journal: Proceeding of the Donbas National Academy of Civil Engineering and Architecture
Publish house: Donbas National Academy of Civil Engineering and Architecture