赤泥—石灰土路基材料制备与性能研究

为了探究赤泥-石灰路基材料能否满足路基土的一些基本性能,通过室内直剪试验与渗透试验,分析了不同赤泥掺量下各试验指标,试验结果表明:增加不同含量的赤泥对路基材料性能产生了一定的影响,当赤泥含量增加,首先其抗剪强度会先增加后减小.赤泥-石灰土路基材料的抗剪强度在赤泥含量为30％左右时会达到最大值.其次,其抗渗性能越来越好,并且当赤泥含量增加到40％时,随着渗透压强的增加,其渗透系数稳定.

Study on Preparation and Properties of Red Mud - Lime Soil Subgrade Material

In order to explore the red mud and lime subgrade material whether or not to satisfy some basic properties of subgrade soil, through the direct shear test and penetration test in laboratory, each test index with the different dosages of red mud is analyzed. The test results show that the increase of red mud with the different contents has a certain influence on the properties of subgrade material. When the red mud content is increased, firstly, its shear strength will be increased, then decreased. The shear strength of red mud - lime soil subgrade material will reach the maximum value when the red mud content is about 30%. Secondly, its impermeability is getting better and better, and when the red mud content increases to 40%, its permeability coefficient is stable with the increase of osmotic pressure.