摘要
随着越来越多的垃圾焚烧厂的建成与投入使用,垃圾焚烧飞灰的排放量越来越巨大。垃圾焚烧飞灰中富含有害重金属Zn、Cr、Pb、Cd以及二英,属于危险废物。经综合比较分析,以飞灰作为辅助胶凝材料制备混凝土是飞灰资源化利用的最佳途径。探索了用飞灰制备超高强混凝土的可能性:应用常规的工艺方法,率先在国内成功研制了28 d抗压强度为117.8 MPa、坍落度为270 mm的飞灰超高强混凝土,且重金属浸出量未超过国家标准。
As more and more incineration plant be built and put into use,the emissions of MSW fly ash become more and more significant.As hazardous waste,fly ash rich in harmful heavy metals Zn,Cr,Pb,Cd and dioxins.After comprehensive comparison,using MSW fly ash as supplementary cementitious materials to prepare concrete is the best way of utilization of MSW fly ash.This paper explores the possibility of preparation of high strength concrete with fly ash：using conventional technology,an ultra-high strength concrete with 117.8 MPa compressive strength at 28 d and 270 mm slump have been firstly prepared in the country successfully.Meanwhile,its leaching amount of heavy metals didn＇t exceed National standards.
出处
《混凝土》
CAS
CSCD
北大核心
2010年第12期107-110,共4页
Concrete
关键词
垃圾焚烧飞灰
超高强混凝土
抗压强度
重金属
MSW fly ash
ultra-high strength concrete
compressive strength
heavy metal
