Application of Warm Mix Recycled SBS Modified Asphalt in Road Engineering
To explore the impact of varying amounts of warm mix agents and recycling agents on the performance of warm mix recycled SBS modified asphalt and determine the optimal ratio,an orthogonal experimental approach was taken,the dosages of warm mix agents,SBS modified asphalt and recycling agents were used as influencing factors,the adhesion work,peeling work,135℃Brinell rotation viscosity and the 64℃rutting factor G*/sinδ of asphalt were used as evaluation indicators.A trend chart of factor level impact was established,the influence of the mass fraction of three additives on the technical indexes of asphalt was discussed,and the mass fraction of warm-mixed recycled SBS modified asphalt was optimized.The results show that the optimal mass fraction of warm mix agent was 4.5%,the optimal mass fraction of regenerator was 20%,and the optimal mass fraction of new SBS modified asphalt was 40%.
Warm mixing agentRegenerationSBS modified asphaltMixturesOrthogonal test
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