解毒飞灰资源化用于混凝土实心砖的研究  

Research on the resource utilization of detoxified fly ash for solid concrete brick

作　　者：倪亚玲 崔敬轩 杨高强 赵春祥 郭胜男 聂卿 NI Yaling;CUI Jingxuan;YANG Gaoqiang;ZHAO Chunxiang;GUO Shengnan;NIE Qing(China Building Materials Academy Co.,Ltd.,Beijing 100024,China;Beijing Urban Construction Huasheng Transportation Construction Co.,Ltd.,Beijing 102400,China)

机构地区：[1]中国建筑材料科学研究总院有限公司,北京100024 [2]北京城建华晟交通建设有限公司,北京102400

出　　处：《混凝土与水泥制品》2024年第7期111-115,共5页China Concrete and Cement Products

基　　金：国家重点研发计划项目(2019YFC1906905)。

摘　　要：对城市生活垃圾焚烧飞灰(以下简称飞灰)进行解毒无害化处理,研究了解毒飞灰等质量取代0、20%、30%、50%、100%的矿粉对混凝土实心砖抗压强度、吸水率、耐久性能、放射性、重金属浸出浓度的影响。结果表明:经过解毒处理后的飞灰重金属含量显著降低;总体上,解毒飞灰的掺入使混凝土实心砖的抗压强度和耐久性能降低,吸水率、放射性和重金属浸出浓度增大;结合相关标准对混凝土实心砖的性能要求,推荐解毒飞灰的掺量为30%。The detoxification treatment of municipal solid waste incineration fly ash(hereinafter referred to as fly ash)was conducted,and the effects of replacing 0,20%,30%,50%and 100%mineral powder with detoxified fly ash on the compressive strength,water absorption,durability,radioactivity and heavy metal leaching concentration of solid concrete brick were studied.The results show that the heavy metal content in fly ash significantly decreases after detoxification treatment.Overall,the addition of detoxified fly ash reduces the compressive strength and durability of solid concrete brick,while increases water absorption,radioactivity and heavy metal leaching concentration.Based on the performance requirements of relevant standards for solid concrete brick,it is recommended to add 30%content of detoxicated fly ash.

关 键 词：解毒飞灰 混凝土实心砖 抗压强度 耐久性能 重金属浸出浓度 放射性 

分 类 号：TU528.041[建筑科学—建筑技术科学]