Lightly pyrolyzed tire rubber used as potential asphalt alternative. (1st June 2016)

• Record Type: Journal Article
• Authors: Wu, Xiaoyu; Wang, Shifeng; Dong, Ruikun
• Is Part Of: Construction & building materials. Volume 112(2016)
• Page Start: 623
• Page End: 628
• Publication Date: 2016-06-01
• Subjects: Light pyrolysis -- Tire rubber -- Modified asphalt -- Rheological properties; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2016.02.208
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: Lightly pyrolyzed tire rubber was prepared by a twin-screw extruder below 300 °C. Lightly pyrolyzed rubber with over 80 wt% sol can be dispersed evenly into asphalt. Lightly pyrolyzed tire rubber could be used as asphalt alternative over 50 wt%. Lightly pyrolyzed tire rubber improved the rheological properties of asphalt. Abstract: Ground tire rubbers were lightly pyrolyzed in a twin-screw extruder and applied as potential alternative for asphalt. The composition of lightly pyrolyzed rubber prepared at different pyrolysis temperatures was characterized by gel permeation chromatography, thermogravimetric analysis and extraction analysis. The rheological properties of LPRs and their mixture with asphalt were evaluated by dynamic rheological analysis. LPR with high sol content had typical properties similar to base asphalt, like low viscosity and balanced rheological properties. LPR could be used over 50% by weight as asphalt alternative, which endowed the asphalt with outstanding lower temperature property.