就地热再生技术在路面养护工程中的应用研究
Research on the Application of Hot In-Place Recycling Technology in Pavement Maintenance Engineering
摘要: 为了推广就地热再生技术在沥青路面养护中的工程应用，基于实体工程对原路面材料残余性能、就地热再生混合料配合比设计及施工工艺开展系统研究。研究表明由于沥青的老化导致原路面材料的低温性能和水稳定均有较大幅度的衰减；通过级配优化、添加新沥青和再生剂，可以显著改善原路面混合料的性能指标；确定了就地热再生施工工艺流程，就地热再生后路面各项技术指标均满足规范要求。
Abstract:
In order to promote the engineering application of geothermal recycling technology in asphalt pavement maintenance, based on the physical engineering, the residual properties of raw pavement materials, the mix proportion design and construction technology of geothermal recycled mixture are systematically studied. The research shows that the low temperature performance and water stability of raw pavement materials are greatly attenuated due to the aging of asphalt; by optimizing gradation and adding new asphalt and regenerant, the performance index of the original pavement mixture can be significantly improved; the construction process of geothermal regeneration is determined, and all technical indexes of the pavement after geothermal regeneration meet the specification requirements.
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