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The Research on Making and Application of Airport Pavement Recycled Concrete
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V23;TU528

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    Abstract:

    The overhauling,rebuilding and enlarging of airport pavement often produce vast amount of waste concrete, the reutilization of the waste concrete is an important and worthwhile subject for study. This paper presents the research on the problem of how to take the waste concrete as a recycled aggregate in making up the airport pavement recycled concrete,which, at the same time, can meet the design and construction requirements of airport pavement project. By adopting the "double mixing" technique mixing high quality fly ash with high efficient admixture,and applying the absolute volume method and individual design method,the mix proportion design of pavement recycled concrete is optimized. The indoor testing results show that the pavement recycled concrete is superior to the common pavement concrete in performance and the workability meets the design requirements. The compressive strength and flexural strength of this pavement recycled concrete are higher than those of the ordinary pavement by 1%-7%、4%-11% respectively. The recycled concrete made in field is good in workability and application effect, and easy to pave in constructing, the 28 days' flexural strength are all higher than 5.5 MPa. So the recycled concrete can be used in military airport pavement construction,also has important military,economical and social benefits.

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  • Online: November 24,2015
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