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首先采用干燥条件和浸水条件下的劈裂试验研究了水泥加料顺序对半柔性再生混合料性能的影响,在此基础上提出击实试验法与修正的马歇尔试验法相结合,并基于性能评价的混合料配合比设计程序,包括材料选择、级配设计及性能评价。研究结果表明:先添加水泥的半柔性再生混合料具有密实的整体结构,且抗水损坏能力较强;半柔性再生混合料具有良好的高温抗车辙能力、低温抗开裂能力、抗水损害能力以及抗收缩能力。结合依托工程发现,基于改性乳化沥青-水泥双胶结料的半柔性再生技术是一种经济有效的路面大中修养护方式,有着良好的经济效益、社会效益和环境效益,具有重要的推广应用价值。
Firstly, the influence of cement feeding sequence on the properties of semi-flexible recycled mixture was studied by using the splitting test under the condition of drying and immersion. Based on this, the combination of compaction test method and modified Marshall test method was proposed, and based on the performance evaluation Materials mix design process, including material selection, grading design and performance evaluation. The results show that the semi-flexible recycled mixture with the first addition of cement has a compact overall structure and strong resistance to water damage. The semi-flexible recycled mixture has good high temperature rutting resistance, low temperature cracking resistance, water damage resistance and Anti-shrink ability. Combined with relying on the project found that semi-flexible regeneration technology based on modified emulsion asphalt - cement double binder is a cost-effective way to repair and protect the pavement, has good economic, social and environmental benefits, and has an important promotion and application value.