钢渣对固体废物基础的水化工艺的泥材料的影响
Caifu Ren1, Jixiang Wang1, Kairui Duan1
1School of Chemical and Environment Engineering, China University of Mining and Technology, Beijing 100083, China.
Materials (Basel, Switzerland)
|May 11, 2024
概括
这项研究开发了一种使用钢 (SS),颗粒高炉 (BFS) 和脱硫石膏 (DG) 的新型固体废物粘合剂. 最佳20%的SS含量增强了机械性能,并加速了可持续建筑材料的水合.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 废物管理 废物管理
背景情况:
- 钢 (SS) 是一种工业固体废物,具有利用潜力.
- 从废物中开发可持续的粘合剂对于减少环境影响至关重要.
- 颗粒高炉渣 (BFS) 和脱硫石膏 (DG) 也是工业副产品.
研究的目的:
- 设计和准备一种新的基于固体废物的粘合剂,使用SS,BFS和DG.
- 为了研究反应动力学,相组合和具有不同SS含量的粘合物的微结构.
- 阐明SS,BFS和DG之间的协同反应机制.
主要方法:
- 液化热的测量方法 液化热测量方法
- 在X射线衍射 (XRD) 中.
- 里埃变换红外光谱法 (FT-IR) 是一种
- 扫描电子显微镜 (SEM) 的使用
- 热重力测量差分扫描热度测量 (TG-DSC) 是一种热度测量技术.
- 入孔径测试 (MIP) 是一种入孔径测试.
主要成果:
- 增加SS含量加速了水合和缩短了设置时间.
- 在20%的SS含量下获得最佳机械性能,压力强度为19.2 MPa (3d) 和58.4 MPa (28d).
- SS,BFS和DG之间的协同效应促进了结石 (AFt) 的形成,促进了早期的强度发展和通过C-S-H和AFt沉的长期增益.
结论:
- 一种基于固体废物的新型粘合剂使用SS,BFS和DG已成功开发.
- 20%的最佳SS含量产生了卓越的机械性能和水化动力学.
- 该研究提供了对水化机制和协同激活的见解,为可持续的粘合剂设计提供了一个参考.
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