Features of Bitumen Changes in the Recovery Process

The needs of sustainable development form an urgent request for the effective disposal of construction waste, however, if the issues of the use of mineral materials and metal are studied in sufficient detail, then the processing of composite bitumen-containing waste requires additional study. The article deals with the issues of changing the composition and structure of bitumens extracted from rolled roofing materials using various organic solvents. Among the solvents considered are: technical kerosene, trichlorethylene, chloroform and carbon tetrachloride. The composition and structure were studied using scanning electron microscopy, IR spectroscopy, and simultaneous thermal analysis. Based on the results obtained, the activation energy was calculated for various compositions of the extracted bitumen. It has been established that according to the results of the chemical composition and IR spectroscopy, the closest composition of the extracted bitumen to the control sample is the bitumen extracted using trichlorethylene. According to the results of TGA and DSC processing, it was found that the most thermally stable bitumen sample extracted using trichlorethylene is the less stable bitumen extracted using kerosene.

N.V. KHOKHLOVA¹, Postgraduate Student (This email address is being protected from spambots. You need JavaScript enabled to view it.),
N.I. SHESTAKOV¹, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
S.V. FEDOSOV¹, Doctor of Science (Engineering), Academician of RAACS (This email address is being protected from spambots. You need JavaScript enabled to view it.);
I.I. TITOVA², Candidate of Sciences (Engineering), Head of the Progress Collective Use Center (This email address is being protected from spambots. You need JavaScript enabled to view it.),
N.V. SYACHINOVA², Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

¹ National Research Moscow State University of Civil Engineering (26, Yaroslavskoye Highway, Moscow, 129337, Russian Federation)
² East Siberian State University of Technology and Management (40B/1, Klyuchevskaya Street, Ulan-Ude, 670013, Russian Federation)

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