CAJ | 학술논문

为改进废弃混凝土的资源利用状况,采用生命周期影响评价方法,量化比较了再生骨料与天然骨料的物化环境影响;其环境影响分值,采用基于社会支付意愿原理确定的权重因子,加权后用货币价值表示。评价结果表明：再生骨料本身的物化环境影响低于天然骨料;废弃混凝土用于生产再生骨料,不仅可以减少废弃混凝土的填埋处置量,同时可以带来显著的环境效益;在混凝土生产中,再生骨料带来的环境效益会随着替代率的提高而增大。
위개진폐기혼응토적자원이용상황,채용생명주기영향평개방법,양화비교료재생골료여천연골료적물화배경영향;기배경영향분치,채용기우사회지부의원원리학정적권중인자,가권후용화폐개치표시。평개결과표명：재생골료본신적물화배경영향저우천연골료;폐기혼응토용우생산재생골료,불부가이감소폐기혼응토적전매처치량,동시가이대래현저적배경효익;재혼응토생산중,재생골료대래적배경효익회수착체대솔적제고이증대。
In order to improve the level of concrete waste recycling,the embodied environmental impact of recycled aggregates and natural aggregates were calculated and compared using life cycle assessment method.The environmental impact score expresses in monetary value by means of the weighting factors based on the principle of social willingness to pay.The assessment results indicate that the environmental impact of recycled aggregates is lower than that of natural aggregates.The use of recycled aggregates derived from concrete waste can not only decrease the amount of waste tipped at landfill,but also bring about noticeable environmental benefits.The environmental benefits will increase with the increase of substitution rate of recycled aggregates to natural aggregates.