电石灰对滨海盐渍路基土性能改良研究

摘要

Based on the laboratory tests and analysis, the feasibility of improvement of saline soil for embankment in the coastal highways is studied and demonstrated. The saline soil used in the test section in Cangzhou-Huanghua highway has been selected to test with different salinity. The results indicate that the saline soil cannot be filled as highway subgrades directly. The electronic lime and fly ash are selected to modified the saline soil, and the mechanic properties of the modified soil and saline soil are contrasted by the test results. The paper focuses on the feasibility of substituting the lime by electronic lime and the physical properties of solidified saline soil. The results indicate that it is effective to modify the saline soil by electronic lime in coastal areas, and the electronic lime can substitute the lime to modify the saline soil.%　　基于室内试验分析，对滨海高速公路盐渍路基填料改良利用的可行性进行研究论证。选取沧黄高速公路试验段用土进行不同含盐量试验研究，试验结果表明，公路沿线盐渍土不能直接应用到公路工程中作为路基填料。选取业废渣电石灰、粉煤灰作为改良材料进行路基性能改良，并对盐渍土和改良盐渍土进行对比试验研究。重点分析利用电石灰代替石灰作为固化剂的可行性以及固化盐渍土的物理特性。通过多种室内试验方法，着重研究固化盐渍土的力学性质，试验结果表明，电石灰对滨海盐渍土路基性能改良合理有效，电石灰可作为石灰的替代品。