摘要
采用生命周期评价(LCA)方法对高性能再生混凝土(HPRAC)的环境协调性进行评价,并以普通再生混凝土(RAC)以及天然碎石骨料混凝土(NC)作为对比组,研究结果表明:混凝土中使用再生骨料以及活性工业废渣可以明显降低混凝土的环境负荷,特别是在能源以及石灰石的消耗方面;同时通过分析计算3种混凝土的环境综合指数E,得到了HPRAC的环境综合指数E为10.460×10-12年,其相比RAC降低了11.6%,相比NC降低了36.6%。这说明,HPRAC是具有良好环境协调性的绿色建材,是可持续发展模式下混凝土发展的新方向。
Life cycle assessment(LCA) method for high-performance recycled concrete(HPRAC) is used to evaluate the environmental coordination,with ordinary recycled concrete(RAC) and natural natural stone aggregate concrete(NC) as the comparison group.Studies show that: the using of recycled aggregate and active industrial waste can significantly reduce the environmental load of concrete,particularly in the energy and limestone consumption;the comprehensive environment index of HPRAC is 10.460 ×10-12a,wich is 11.6% lower compared to RAC and 36.6% lower compared to NC.This shows that,HPRAC is green building materials with good environment cordination,and shows a new developing direction for concrete under the model of sustainable development
出处
《铁道科学与工程学报》
CAS
CSCD
2011年第5期19-25,共7页
Journal of Railway Science and Engineering
基金
国家"十一五"科技支撑计划项目(2008BAK48B01)
湖南省科技计划项目(2008SK4033)
中央直属高校前沿研究计划重点项目(2010DXPY010)
关键词
高性能再生混凝土
再生混凝土
生命周期评价
环境评价
环境综合指数
high performance recycled concrete
recycled concrete
life cycle assessment
environmental evaluation
environmental index