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There is a lot of red clay along the Yuzhan expressway. In order to use local materials, improve the efficiency of economy and protect the environment, it is proposed to use red clay of Guangxi as roadbed material. Through the experiments, the influence of different mix amount of sand and lime on red clay properties, feasibility of soil improvement is demonstrated and the influence regularities of strength index are analyzed. The results provide important reference for design and construction of expressway.

Improvement technology research on red clay of Yuzhan expressway