摘要
垃圾焚烧(waste incineration)炉渣基免烧砖是以水泥、炉渣为主要原料,混合加入掺合料、外加剂等,通过加水搅拌、成型、养护等一系列工艺所生产制造的新型环保节能砖。目的是为了优化炉渣和水泥的匹配关系,提高炉渣基免烧砖的强度性能,加大MSWI(municipal solid waste incineration)炉渣的应用范围。试验研究表明:测试炉渣的理化性质,即炉渣化学性质稳定;取粒度在0. 83~1. 7 mm的炉渣,按10%比例增加指数等质量替代水泥和砂进行试验;并将其与基准配合比进行对比;当炉渣颗粒粒度在0. 15~2. 5 mm时,免烧砖的抗压强度随着粒径的增大而提高;且粒度在0. 83~1. 7 mm抗压强度性能最优。各因素对抗压强度的影响程度为炉渣粒度>炉渣掺杂量>水灰比;炉渣掺量代替砂比例等于40%,相应的水灰比等于0. 46。试验为垃圾焚烧炉渣制备免烧砖提供初步分析,具有炉渣资源化利用价值。
Wast in cineration slag-based brick is a new type of environmental-friendly and energy-saving brick produced by adding a mixture of cement,slag as the main raw material,mixing admixture etc,through a series of processes such as water mixing,forming and curing.The purpose is to optimize the matching relationship between slag and cement,improve the strength performance of slag-based bricks,and increase the application range of municipal solid waste incineration(MSWI)bottom ash.The experimental research shows that the physicochemical properties of the test slag and the slag chemical properties are stable.The slag with a particle size of 0.83~0.17 mm is used to replace the cement and sand with a 10%proportional increase index,and the mixture is compared with the reference ratio.When the particle size of the slag particles is 0.15~2.5 mm,the compressive strength of the MSWI slag-free bricks increases with the increase of the particle size,and the compressive strength of the particles is optimized at 0.83~1.7 mm.The degree of influence of strength is slag particle size >slag doping amount >water-cement ratio,slag content instead of sand ratio is equal to 40%,and the corresponding water-cement ratio is equal to 0.46.The test provides preliminary analysis for the preparation of MSWI slag-free brick for waste incinerator slag,and has the value of slag resource utilization.
作者
许宁
谢宇
岳鹿
王佳磊
浦旭清
陈介民
沈超
XU Ning;XIE Yu;YUE Lu;WANG Jia-lei;PU Xu-qing;CHEN Jie-min;SHEN Chao(School of Mechanical Engineer,Yancheng Institute of Technology,Yancheng 224051,China;Jiangsu Province Key Laboratory for Advanced Technology in Environmental Protection,Yancheng 224051,China)
出处
《科学技术与工程》
北大核心
2019年第2期205-210,共6页
Science Technology and Engineering
基金
国家重点研发计划(2017YFC0703202)资助
关键词
炉渣
配合比
抗压强度
免烧砖
正交实验
slag
mix ratio
compressive strength
non-burning brick
orthogonal experiment
