石灰改良盐渍土路基工程特性试验研究

滨海盐渍土作为一种特殊土,具有溶陷、盐胀、腐蚀等不良的工程特性,滨海地区盐渍土路基填料是制约交通建设快速发展的重大岩土工程问题之一。为了解决滨海盐渍土的工程应用,基于大量的室内试验,研究分析了石灰改良盐渍土路基填料的液塑限试验、击实试验、室内CBR试验和不同条件的不固结不排水三轴试验结果,从工程技术、降低造价和环境保护等方面对滨海高速公路路基填料改良利用的可行性进行了研究论证,为滨海地区盐渍土路基的修筑具有重要的指导意义。

Test Study on Engineering Characteristics of Lime-improved Saline Soil for Highway Subgrade

Inshore saline soil is a special soil with some adverse engineering properties, such as collapse, dilatability and erosion, etc. Subgrade filling of highway has been one of the major geotechnical engineering problems that restrict the development of highway in inshore saline area. In order to solve the engineering application of the saline soil in inshore area, a large number of tests have been carried out, including the liquid and plastic limits test, compaction test, CBR test and unconsolidated-undrained triaxial test of lime improved saline soil. The feasibility of improved saline soil for inshore subgrade filling is discussed based on the engineering technique, cost and environment protecting. The conclusion has significant importance in guiding the construction of inshore area saline soil highway subgrade.