Title: IMPROVED STORAGE STABILITY OF LDPE/SBS BLENDS MODIFIED ASPHALTS
Page Range: p.229-236
Author(s): Gao G; Zhang Y; Zhang Y; Sun K; Fan Y
File size: 115K
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 10
Issue No: No. 3
Abstract
Phase separation has been a major obstacle to the widespread use of polymer-modified asphalt in road surfacing, and to provide a solution to the problem of storage-stable polymer modified asphalts, blends of SBS and LDPE are mixed under high shear stress, and added with sulphur to the asphalt under high speed mixing. Compared to the asphalts modified by LDPE and SBS added directly, the blend modified asphalts showed better storage stability in the presence of sulphur at high temperature, with no visible phase separation or evidence of coalescence. The rheological properties of the asphalts were also improved by the addition of polymers in all cases. 18 refs.
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