封层指的是为封闭表面空隙，防止水分侵入面层或基层而铺筑的沥青混合料薄层。铺筑在面层表面的称为上封层；铺筑在面层下面的称为下封层。
关键词:封层;下封层;智能型沥青洒布车 [gap=714]Key words: seal coat; sub-seal coat; intelligent asphalt spreader
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土木工程编译词汇C-25-SCIdict学术词典-... ... 塑料涂料 Coating，plastic 封层 Coat，flush 共轴相关 Coaxial correlation ...
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Through properties of roads analysis adopt seal course plan of 3%cement stabilized sand gravel and 6%cement stabilized fine sand is adopted to fill experimental road. It proposes construction main point of relevant seal course plan and quality controlling index.
提出水泥稳定砂砾、水泥稳定细砂、石灰粘土和石灰固化剂粘土封层材料的强度参考范围,通过路用性能分析采用3%水泥稳定砂砾和6%水泥稳定细砂的封层方案进行试验路铺筑,提出了相应的封层方案施工要点和质量控制指标,利用有限元力学分析和竣工后观测,验证了路基顶面封层结构、材料的稳定性。
参考来源 - 砂类土路基顶面封层技术的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
介绍了稀浆封层技术在乡村道路砂石路面上作为封层的施工应用。
The paper introduces application of Slurry seal coat technique in sand-stone pavement of rural road as seal coat of pavement.
介绍了改性乳化沥青纤维封层技术特点及在路面上作为封层的施工应用。
This paper introduces the characteristics of the technology of modified emulsified asphalt fiber coat and its use in the construction of road surface layer.
基于稀封层混合料的特点，探讨了公路养护中稀浆封层技术的应用范围。
Based on the feature of slurry seal mixture, the paper explores the application scope of slurry seal technology in highway maintenance.
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