电石灰改良滨海地区盐渍土路基可行性研究

Study of feasibility of calium carbide dust improved inshore area saline soil for highway subgrade

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,而滨海地区用盐渍土作为路基填料是交通建设需要解决的重大岩土工程问题之一。为了解决滨海盐渍土的工程问题,分析了电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,研究成果对滨海地区盐渍土路基的修筑具有参考价值。

Inshore saline soil is a special soil which has some bad engineering properties, such as collapse, dilatability and erosion etc. Filling material of highway subgrade with saline soil is one of the important geotechnical engineering challages, which restricts the development of highway in inshore saline area. In order to solve the engineering application of the saline soil in inshore area, large numbers of tests are done. The tests include the liquid and plastic limits test, compaction test, CBR test and unconsolidated-undrained triaxial test. The feasibility of improved saline soil for inshore subgrade filling material is discussed according to the engineering technique, cost and environment protecting. This conclusions give a reference to the construction of inshore area saline soil highway subgrade.