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合肥某高速公路沿线广泛分布膨胀土,在施工中不得不使用弱膨胀土进行路基填筑,文章就弱膨胀土石灰改良后路用承载比进行了室内试验研究。石灰作为一种有效外掺剂,膨胀性降低而承载比却显著提高。加州承载比作为公路工程中广泛使用的一个性能指标,它是评价路基土强度和稳定性的主要依据之一。虽然压实度和CBR强度均被用作为衡量路基土的性能的指标,但两者之间的对应关系尚待探讨,文章得出了关于路基土的各项性能与含水量之间关系的有价值的结论。
Extensively distributed expansive soil along a highway in Hefei has to be filled with weakly expansive soil during construction. The paper studies the road bearing ratio of weak expansive soil lime after improvement. As an effective external admixture of lime, the expansibility decreases while the bearing ratio increases significantly. California bearing ratio as a widely used performance indicators in highway engineering, it is to evaluate the strength and stability of subgrade soil is one of the main basis. Although compaction and CBR strength are both used as indicators to measure the performance of subgrade soils, the correspondence between the two is yet to be explored. The paper draws conclusions about the relationship between subgrade soil properties and water content Value conclusion.