2) bottom course
底层;基层
3) footing course
底层，基层
5) Subbase
[英]['sʌb,beis] [美]['sʌb,bes]
底基层
1.
Experimental Research on Road Usage Performance of Materials for Subbase of Cement,Lime,Fly Ash Washed out by Seawater and Macadam Road;
水泥石灰海排灰碎石道路底基层材料的路用性能试验研究
2.
Material Experiment and Analysis of Cement Fly Ash Stabilized Steel Slag in Subbase of Expressway;
水泥、粉煤灰综合稳定钢渣在高速公路底基层应用的原材料试验与分析
3.
Study on construction of lime, fly-ash and cement treated soil subbase;
石灰综合稳定土底基层的施工工艺与质量控制
6) base course
底基层
1.
The settlement of technical parameters of lime stabilized soil in base course construction;
底基层施工中石灰稳定土技术参数的确定
2.
Combining the construction practice of Fokai Express Highway, it introduces the measures and experience of construction quality control for the graded crushed－ stone base course of flexible pavement.
结合佛开高速公路施工实践，介绍柔性路面级配碎石底基层施工质量控制的做法和经验。
3.
Taking some road construction as background,through limit moisture content test and X fluorescence analysis,it is pointed out that the water expansion induced by phosphogypsum,which is massively used in stable soil of road base course by replacing fly ash,is the basic reason to induce engineering diseases.
以某道路建设为研究背景,通过界限含水率试验及X荧光定量分析,指出工业废料磷石膏直接取代二灰土中的粉煤灰,大剂量应用于道路底基层稳定土,在富水环境下引发吸水膨胀是导致工程病害的根本原因。
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