Abstract
High calcium fly ash and fly ash are two kinds of industrial waste residue. By analyzing their chemical compositions, the mechanism in strength of the high calcium fly ash and fly ash mixture is expounded in this paper. Based on the method in Test Methods of Materials Stabilized with Inorganic Binders for Highway Engineering, the technical performances of the mixture of high calcium fly ash and fly ash in highway application, which include the strength, modulus and water stability, were studied by systematic experiments. And, the influence factors of the mixture strength were analyzed, too. The results indicate that the mixture has higher strength, modulus and good water stability. The technical performances of high calcium fly ash and fly ash mixture conform to the current specifications for design of highway asphalt pavement, so it can be used as sub-base course or base course construction material.
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