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掺木质纤维素温拌OGFC在国内长大隧道工程中的应用尚属首次。文章探讨了温拌的技术特点以及其与OGFC结合在隧道中应用的技术价值。介绍了温拌OGFC沥青混合料的设计和性能验证,结果显示在显著降温情况下,各项技术指标满足路面施工技术规范及施工指导意见的要求。结合试验段施工,针对拌和、摊铺、压实等阶段,总结和分析了掺木质纤维素温拌OGFC施工工艺。该技术方案在瑞赣高速公路长大隧道工程中进行了大规模的实体工程应用。
For the first time, it is the first time that OGFC mixed with lignocellulosic warm mix is used in the project of long tunnel in China. The article discusses the technical characteristics of warm mix and its technical value combined with OGFC in the tunnel. The design and performance verification of warm mixed OGFC asphalt mixture are introduced. The results show that under the condition of significant cooling, the technical indexes meet the requirements of pavement construction technical specifications and construction guidance. Combined with the construction of test section, the construction technology of warm mixed OGFC with lignocellulose was summarized and analyzed for the stages of mixing, paving and compaction. The technical scheme has been applied in large-scale physical engineering in the long tunnel project of Rigan-Gan Expressway.