Application of high-dose epoxy-modified warm mix recycling technology in G327 National Highway
A study was conducted to propose a test road structure scheme for the G327 National Highway,replacing the conventional AC-20 modified asphalt lower surface layer with a high-dose epoxy-modified warm mix recycled asphalt mixture(ERAC-20).The study involved the design of asphalt mixture targets ratios,production mix ratios,mineral composition ratios,and gradation curves.The optimal asphalt-to-stone ratio,epoxy-modified material dosage,and 70# matrix asphalt dosage were determined.The road performance was validated to meet technical requirements.The study also outlined the construction process,and key control points for the high-dose epoxy-modified warm mix recycled asphalt lower surface layer.This approach achieved the high-value,high-performance,and high-dose utilization of reclaimed asphalt pavement(RAP)in asphalt surface layers.The asphalt mixture incorporated milling materials up to 50％and 70％,leading to significant savings in asphalt,crushed stone,and fuel resources.This approach also resulted in a substantial reduction in carbon emissions,demonstrating notable economic,social,and green environmental benefits.
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维普
