Work

Study on Odor-Reducing Effectiveness and Performance Impacts of Deodorizing Materials on Asphalt Binders

Year: 2025

Type: article

Abstract: Asphalt binder flue gas emits irritating odors and poses health and environmental hazards. To promote the sustainable development of asphalt pavement construction, this study investigates the flue gas odor-reducing effectiveness and performance impacts of deodorizing materials on asphalt binders. A specialized asphalt binder flue gas collection device was designed, coupled with an evaluation protocol tailored for asphalt deodorants, to systematically evaluate the odor-reducing effectiveness of materials B and C on both 70# pure asphalt binder and SBS-modified asphalt binder. Finally, the impacts of two kinds of deodorizing materials on the high-temperature and low-temperature performance of different asphalt binders were discussed. The results show that the odor-reducing effectiveness of tert-butyl-co-aldehyde-acting material C on odorous volatile organic compounds (VOCs), hydrogen sulfide (H2S), and carbon monoxide (CO) in 70# pure asphalt binder flue gas is the best, reaching 66.7%, 49.1%, and 44.0%, respectively. The odor-reducing effectiveness of conjugated double bonds and aldehyde group synergistic material B on odorous VOCs, H2S, and CO in SBS-modified asphalt binder is the best, reaching 78.7%, 52.9%, and 51.0%, respectively. Both materials B and C can improve the high-temperature deformation resistance of 70# pure asphalt binder and SBS-modified asphalt binder. The anti-cracking properties of SBS-modified asphalt binder at low temperatures were improved to some extent by materials B and C, but the anti-cracking properties of 70# pure asphalt binder at low temperatures were not good. These asphalt binders all meet the specification requirements of a stiffness modulus not more than 300 MPa and a creep rate not less than 0.3.

Source: Sustainability

DOI: 10.3390/su17104491

Authors: Meng Guo, Lewen Wei, Ye Fu, Mingyang Guan

Institutions: Beijing University of Technology, Beijing Technology and Business University, Chongqing Municipal Government

Language: English

Topic: Asphalt Pavement Performance Evaluation

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Responsible consumption and production

Open Access status: gold

Estimated APC paid: $2,896