欢迎访问《硅酸盐通报》官方网站,今天是

硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (7): 2335-2346.DOI: 10.16552/j.cnki.issn1001-1625.2026.0038

• 资源综合利用 • 上一篇    下一篇

循环流化床炉渣粒径对水泥基复合胶凝材料性能的影响

荆宏宇1(), 段思宇1,2(), 杨嵩桥3, 王永岗3, 周冬冬3, 路广军1, 马志斌1   

  1. 1.山西大学资源与环境工程研究所,太原 030006
    2.太原科技大学环境与资源学院,太原 030024
    3.山西路桥再生资源开发有限公司,太原 030006
  • 收稿日期:2026-01-11 修订日期:2026-03-04 出版日期:2026-07-15 发布日期:2026-08-13
  • 通信作者: 段思宇,博士,副教授。E-mail:2020031@tyust.edu.cn
  • 作者简介:荆宏宇(2001—),女,硕士研究生。主要从事循环流化床粉煤灰资源化利用的研究。E-mail:1360751212@qq.com
  • 基金资助:
    中央引导地方科技发展资金项目(YDZJSX2025C001);低碳建筑山西省实验室开放课题专项资金(DTJZ-KF-25-03);国家自然科学基金(52500166)

Effect of Circulating Fluidized Bed Slag Particle Size on Properties of Cement-Based Composite Cementitious Materials

JING Hongyu1(), DUAN Siyu1,2(), YANG Songqiao3, WANG Yonggang3, ZHOU Dongdong3, LU Guangjun1, MA Zhibin1   

  1. 1.Institute of Resources and Environmental Engineering,Shanxi University,Taiyuan 030006,China
    2.School of Environment and Resources,Taiyuan University of Science and Technology,Taiyuan 030024,China
    3.Shanxi Road and Bridge Recyclable Resources Development Co. ,Ltd,Taiyuan 030006,China
  • Received:2026-01-11 Revised:2026-03-04 Published:2026-07-15 Online:2026-08-13

摘要:

为推动循环流化床炉渣(CFBS)的资源化利用并降低水泥行业碳排放,本研究通过机械粉磨制备了不同粒径的CFBS,并将其作为辅助胶凝材料与水泥复配。首先分析了不同粉磨时间CFBS的粒度分布、比表面积及微观形貌变化,然后分析了CFBS对复合胶凝材料工作性能及力学性能的影响规律,并借助XRD、TG-DTG、FT-IR和SEM分析复合胶凝材料水化特性。结果表明,粉磨45 min时CFBS细化效果最佳,中值粒径D50为8.69 μm,比表面积达到870 m2/kg,超过最佳粉磨时间会导致颗粒团聚,D50增大。减小粒径能有效激发CFBS活性,使复合胶凝体系相较于纯水泥体系呈微膨胀,并在D50最小时获得较优的力学性能与最短的凝结时间。减小CFBS粒径可提高胶凝体系的水化速率,促进C-(A)-S-H凝胶和钙矾石的生成,使结构更加致密,力学性能更为优异。本研究为基于CFBS粒径调控的复合胶凝材料设计与性能优化提供了参考。

关键词: 循环流化床炉渣, 复合胶凝材料, 机械粉磨, 颗粒粒径, 水化特性

Abstract:

To promote the resource utilization of circulating fluidized bed slag (CFBS) and reduce carbon emissions in the cement industry, this study prepared CFBS with different particle sizes through mechanical grinding and incorporated it as a supplementary cementitious material in cement blends. Firstly, the particle size distribution, specific surface area and microstructure of CFBS with different grinding time were analyzed. Then, the effect of CFBS on the workability and mechanical properties of the composite cementitious materials was investigated. The hydration characteristics of composite cementitious materials were further examined using XRD, TG-DTG, FT-IR, and SEM. The results indicate that CFBS grinding for 45 min has the best refining effect, with a median particle size D50 of 8.69 μm and a specific surface area of 870 m2/kg. Exceeding the optimal grinding time will lead to particle agglomeration and an increase in D50. The reduction of particle size can effectively stimulate the activity of CFBS, enabling the composite cementitious system to exhibit micro-expansion behavior compared to the pure cement system, and achieving better mechanical properties and the shortest setting time at the minimum D50. The reduction in CFBS particle size accelerates the hydration rate of cementitious system and promotes the formation of C-(A)-S-H gel and ettringite, resulting in a denser structure and superior mechanical properties. This study provides reference for the design and performance optimization of composite cementitious materials based on CFBS particle size regulation.

Key words: circulating fluidized bed slag, composite cementitious material, mechanical grinding, particle size, hydration characteristic

中图分类号: