级配良好碎石土的压实度与CBR强度关系研究

Study on the Relationship between Compactness and CBR Strength of Graded Fine Gravel Soil

CBR即加州承载比,是评定土基及路面材料承载能力的主要指标之一。虽然CBR值与压实度都可以用来衡量路基土体的稳定性与强度,但两者之间的关系一直在探讨研究中。通过对文山州某公路路基级配良好碎石土进行试验,得出级配良好碎石土压实度与CBR值的正相关性,并提出实际工程中不同级配碎石土其压实度与CBR强度所存在的参考性结论。

CBR, the California bearing ratio, is one of the main indicators for assessing the bearing capacity of soil and pavement materials. Although the CBR value and compaction can be used to measure the stability and strength of the subgrade soil, the relationship between the two has been explored. Through the test of a good gravel soil in a highway subgrade of Wenshan Prefecture, the positive correlation between the compactness of the graded gravel and the CBR value is obtained, and the reference conclusions between the compactness of the different graded gravel soil in the actual project and CBR strength is proposed.