摘要
介绍了电厂炉底渣的性能及其在混凝土中的应用现状。电厂炉底渣的粒径范围与细砂相近,且其密度较低、吸水率较高,化学成分与粉煤灰相近。目前,电厂炉底渣主要应用在以下两个方面:一是取代部分细骨料用于制备混凝土,推荐掺量为10%~50%;二是磨细后用作水泥混合材或混凝土掺合料。通过掺加减水剂、采用活性激发技术等方式可有效缓解电厂炉底渣对混凝土的不利影响。
The properties of coal-fired furnace bottom slag and its application status in concrete are introduced.The particle size of coal-fired furnace bottom slag is similar to that of fine sand,and its density is low and the water absorption rate is high,and its chemical composition is similar to that of fly ash.At present,the coal-fired furnace bottom slag is mainly used in the following two aspects:one is to replace part of the fine aggregate with the coal-fired furnace bottom slag to prepare concrete,and the recommended dosage is 10%~50%,the other is to grind the coal-fired furnace bottom slag to be used as cement admixtures or concrete admixtures.The adverse effects of coal-fired furnace bottom slag on concrete can be effectively alleviated by adding water reducing agent and using active excitation technology.
作者
高仁辉
曹巍缤
庞超明
秦鸿根
刘家彬
GAO Ren-hui;CAO Wei-bin;PANG Chao-ming;QIN Hong-gen;LIU Jia-bin(ZhongShan DongJun Concrete Co.,Ltd.,Zhongshan 528462,China;Southeast University,School of Civil Engineering,Jiangsu Key Laboratory of Construction Materials,Nanjing 211189,China;Southeast University,School of Materials Science and Engineering,Jiangsu Key Laboratory of Construction Materials,Nanjing 211189,China)
出处
《混凝土与水泥制品》
2022年第10期78-83,87,共7页
China Concrete and Cement Products
基金
国家重点研发计划项目(2021YFB3802000、2021YFB3802004)
江苏省住建厅节能减排专项项目。
关键词
电厂炉底渣
应用现状
混凝土
工作性
力学性能
Coal-fired furnace bottom slag
Application status
Concrete
Workability
Mechanical property
