Repurposing Waste Polyurethane into Cleaner Asphalt Pavement Materials: Laboratory Investigation
Source abstract
Abstract
With the increasing consumption of polyurethane (PU) products, more and more waste polyurethane (WPU) needs to be handled, resulting in the inefficient utilization of post-consumer PU becoming a key problem in the recycling of waste polymers. Therefore, this paper aims to explore the properties of WPU modified asphalt and assess the feasibility of using WPU materials for asphalt pavement applications. At the same time, the conventional properties, rheological properties, stability, and microscopic properties of the modified asphalt were analyzed. The results show that the rheological properties and permanent deformation resistance of the modified asphalt are improved when the WPU content is increased from 5% to 25%, while the storage stability of the WPU modified asphalt decreases with the WPU content. The optimal amount of WPU modified asphalt is accordingly recommended to be 20%.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Asphalt Pavement Performance Evaluation · Infrastructure Maintenance and Monitoring · Polymer composites and self-healing
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Professor, College of Civil and Transportation Engineering, Hohai Univ., Nanjing, Jiangsu Province 210098, PR China.
Ph.D. Candidate, College of Civil and Transportation Engineering, Hohai Univ., Nanjing, Jiangsu Province 210098, PR China.
Professor, College of Civil and Transportation Engineering, Hohai Univ., Nanjing, Jiangsu Province 210098, PR China (corresponding author). ORCID: .
Professor, School of Civil Engineering, Guangzhou Univ., Guangzhou 510006, China.
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