摘要
膨胀土是一种特殊性质的土,不同的掺灰率对膨胀土性质的改变也不同。文章对膨胀土进行掺石灰试验研究,探讨掺石灰对膨胀土的胀缩性与强度的影响规律,对比分析了膨胀土改良后的最佳含水量、最大干密度、无侧限抗压强度、CBR等指标与不同掺灰率之间的关系,确定了膨胀土的最佳掺灰率,试验结果对同类工程具有参考意义。
Expansive soil is of special nature, and different lime-doped rates have different effect on the nature of the expansive soil. Specimens were tested to study physical properties, compaction, free swell index and swell potential, swelling pressure , and unconfined compressive strength in laboratory. The paper contrasts and analyses the relationship of the optimum water content, the maximum dry unit weight, the unconfined compressive strength and CBR with the different lime-doped rates for the expansive soil which has been improved. The experiment confirms the best lime-doped rate and the results of the experiment can be offered to the similar projects, for reference.
出处
《建筑科学》
北大核心
2009年第11期70-72,62,共4页
Building Science
关键词
路基
膨胀土
石灰改良
掺灰率
roadbed
expansive soil
lime-improved
lime-doped rate
