| 摘要 |
PURPOSE: A hydraulic asphalt concrete binder composition is provided to improve adhesion, strength, and durability by comprising a polyurethane resin, modified asphalt A-coated aggregate, a modified asphalt B-coated aggregate with the optimal ratio. CONSTITUTION: A hydraulic asphalt concrete binder composition comprises 90-97 weight% of a modified asphalt A-coated aggregate, 0.5-7 weight% of a polyurethane resin, and 2-8 weight% of a modified asphalt B. The modified asphalt A-coated aggregate is formed by mixing 1-10 weight% of a modified asphalt A and 90-99 weight% of an aggregate. The modified asphalt A comprises a 70-98 weight% of a straight asphalt, 1-10 weight% of an anti-stripping agent, and 1-10 weight% of IFR(Internal Friction Reduction) additive. The modified asphalt B comprises 1-40 weight% of a straight asphalt, 10-50 weight% of a process oil, 10-30 weight% of a lubricant, and 5-20 weight% of a scavenger. [Reference numerals] (AA) Stability(N); (CC) Porosity(%); (CC) HMA(IFR added)
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