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Quantify the energy and environmental effects of using recycled asphalt and recycled concrete for pavement construction phase I : final report.
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    Final report; 2008-2009.
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  • Abstract:
    The objective of this study is to quantify the energy and environment impacts from using recycled materials

    for highway construction. Specifically, when recycled asphalt pavement is re-used for producing hot mix

    asphalt or when recycled concrete aggregate is used in concrete, how much energy will be utilized and how

    much are the greenhouse emissions. This study quantified the impact of using recycled asphalt pavement

    (RAP) in hot mix asphalt and recycled concrete aggregate in concrete on energy consumption and

    greenhouse gas emission. For RAP, the impact on energy consumption and greenhouse gas emission is

    affected by a few factors, such as moisture content in RAP, hot mix asphalt discharge temperature and RAP

    content. A mathematical model was developed to determine the impact. For recycled concrete aggregate for

    concrete production, impact on energy consumption and greenhouse gas emission is largely affected by

    transporting distances. A simple model was also developed for recycled concrete aggregate.

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