Secondary use of recovered bitumen from waste roll materials-Reference-Cited by-同舟云学术

Secondary use of recovered bitumen from waste roll materials

Published:2024-06-13 Issue:3 Volume:26 Page:196-209
ISSN:2310-0044
Container-title:Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture
language:
Short-container-title:Vestnik Tomskogo gosudarstvennogo arhitekturno-stroitelnogo universiteta

Author:

Shestakov N. I.¹,Tkach E. V.¹,Khokhlova N. V.¹,Prikhodko A. Yu.¹

Affiliation:

1. National Research Moscow State University of Civil Engineering

Abstract

The article discusses current issues of recycling bitumen components from waste roofing materials due to an urgent need to minimize the environmental impact and provide cost-effective use of natural resources. The study is driven by the significant role of bituminous materials in the construction industry and their disposal after the end of their service life, including the environmental threat from waste accumulation and loss of original properties of materials caused by the ultraviolet radiation, temperature changes and humidity.Purpose: The aim of the work is to evaluate the effectiveness of bitumen recovery methods utilizing various organic solvents. Special emphasis is placed on the chemical method characterized by the use of active chemical components to dissolve and extract bitumen, such as technical kerosene, trichlorethylene, chloroform and carbon tetrachloride. For comparison, a bitumen sample is thermally extracted from roofing felt without exposure to solvents.Methodology/approach: The analysis of polarity of organic solvents and their ability to dissolve certain groups of hydrocarbons, which made it possible to selectively change the bitumen chemical composition. Liquid adsorption chromatography and differential scanning calorimetry techniques are used to determine changes in the composition and thermal properties of bitumen, respectively.Research findings: Changes in the concentration of hydrocarbon groups in bitumen under the influence of solvents affect physicochemical properties of the material, that opens up prospects for its reuse in construction and road coating production. Changes in heat flow observed during the DSC analysis, allow optimizing the properties of the extracted bitumen and improve the efficiency of its application.Practical implications: The possibility is shown for integrating recovered bitumen waste in the production cycle, which leads to a reduction in the need for primary resources and environmental burden from waste disposal, contributing to the sustainable development of the construction industry.

Publisher

Tomsk State University of Architecture and Building

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