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分析了冲击碾压的作用机理、橡胶沥青的生成机理及应力吸收层应用性能.基于“强基薄面”理论,开展了冲击碾压、橡胶沥青及应力吸收层工艺组合技术在公路工程中应用试验研究.结果表明:对淤泥质软弱地基上的填石路堤进行冲击碾压加固是动力压密和动力固结双重作用结果;橡胶沥青的形成机理是胶粉与基质沥青在高温条件下混合后同时发生物理和化学两种反应,但以物理溶胀为主;橡胶沥青应力吸收层具有吸收应力、减缓反射裂缝、防水和增强层间黏结等优良功能.冲击碾压、橡胶沥青和应力吸收层组合技术现场应用效果良好.
The mechanism of impact rolling, the formation mechanism of rubber asphalt and the application performance of stress absorption layer are analyzed.Based on the theory of “strong basal plane ”, the combination of impact rolling, rubber asphalt and stress absorption layer technology in highway engineering The results show that the impact compaction and consolidation are the two effects of dynamic compaction and dynamic consolidation on the embankment with soft silt foundation. The formation mechanism of rubber asphalt is that rubber powder and matrix asphalt are mixed under high temperature After physical and chemical reactions occur at the same time, but the main physical swelling; rubber asphalt stress absorption layer with absorption stress, slow reflection reflection, waterproof and enhance the interlayer adhesion and other excellent features. Impact crush, rubber asphalt and stress absorption layer Combination technology field application of good results.