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SDA Low cost and Hi-performance Asphalt Binder Composition for Asphalt Pavement Using Residue produced during Solvent De-Asphalting Process And Manufacturing Method thereof
SDA Low cost and Hi-performance Asphalt Binder Composition for Asphalt Pavement Using Residue produced during Solvent De-Asphalting Process And Manufacturing Method thereof
The present invention relates to a method for manufacturing a low-cost and high-performance asphalt mixing composition for asphalt pavement by mixing aggregate with an asphalt binder composition produced by the use of a residue produced through a solvent de-asphalting process (SDA process or solvent extraction process) and an asphalt mixing composition manufactured by the same. The present invention provides the asphalt mixing composition and the method for manufacturing the asphalt mixing composition including: 2 to 8 wt% of the asphalt binder composition produced by the use of the SDA process residue; and 92 to 98 wt% of the aggregate. The asphalt binder composition according to the present invention may be configured to include 90 to 95 wt% of the SDA process residue, 1 to 7 wt% of a modifying additive, 0.1 to 1.0 wt% of a coupling reinforcing agent, 1.0 to 3.0 wt% of one or at least two materials selected from the group consisting of SBR and SBS, 0.1 to 1.0 wt% of sulfur, and 0.1 to 0.5 wt% of a vulcanization accelerator when the asphalt binder composition is assumed to have a total weight of 100 wt%.
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