无机结合料稳定粉质黏土的强度特性试验研究
Test Study on Strength Characteristics of Inorganic Binder Stabilized Silty Clay

为了探究粉质黏土用于路面基层的可行性，分别以水泥、石灰为结合料，开展了不同掺量的水泥、石灰、水泥 + 石灰的稳定土试验，测试了不同改良方案下稳定土的强度。研究表明，改良粉质黏土的CBR值随石灰、水泥掺量的增加而增大，但相同掺量下，水泥稳定土的CBR值高于石灰稳定土；水泥稳定粉质黏土的7天无侧限抗压强度随水泥掺量的增加而增大，粉质黏土不宜以石灰为改良剂；常用掺量下水泥稳定粉质黏土的无侧限抗压强度较低，不能满足道路底基层的要求。
In order to explore the feasibility of silty clay used in pavement base, tests of stabilized soil with different dosages of cement, lime and cement + lime were carried out with cement and lime as binder respectively, and the strength of stabilized soil under different improvement schemes was tested. The results show that the CBR value of the improved silty clay increases with the increase of lime and cement content, but the CBR value of cement stabilized soil is higher than that of lime stabilized soil under the same amount. The unconfined compressive strength of cement stabilized silty clay increases with the increase of cement content in 7 days, and lime is not suitable for silty clay as modifier. The unconfined compressive strength of cement stabilized silty clay with common dosage is low, which cannot meet the requirements of road subbase.