Research on Mix Design Method of Cement Stabilized Graded Crushed Stone Base Mixture Based on Granite
A new design method is proposed to address the shortcomings of the mix design method for cement stabilized graded crushed stone mixtures.The concept of target gradation of the mixture is in-troduced,and specific terms for mix design such as filler,embedded and extruded materials,and skel-eton materials are proposed.The core of the design method is based on the grading range of cement stabilized graded crushed stone base mixture commonly used in Guangdong Province.By using statis-tical induction method,the relationship between the passing rate of 9 well operated expressway gran-ite mixture fillers,embedded materials,skeleton materials,and 7 day unconfined strength is estab-lished,and the relationship between various strength influencing factors and unconfined strength is fitted(correction coefficient Adj R2=0.917 8).Therefore,a design method for the mix ratio of gran-ite cement stabilized graded crushed stone has been constructed.The new mix design method has solved the problems of unclear gradation design goals,high experience requirements,and large design workload of cement stabilized graded crushed stone base mixture.It can also estimate the unconfined strength in the early design stage,providing valuable reference for the mix design of water stabilized mixtures.
granitemix designtarget gradingstrengthmethod research
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