膨胀土路基石灰改良试验研究

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。

Experimental Study on Improving Expansive Soil Roadbed with Lime

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 ...