合石膏-GGBS-碳化物残渣三元混合水泥的强度,微结构和环境性能
Yunzhi Tan1,2, Joseph Roland Atenga Essama1,2, Chong Wang1,2
1Yichang Key Laboratory of the Resources Utilization for Problematic Soils, China Three Gorges University, Yichang 443002, China.
Materials (Basel, Switzerland)
|November 13, 2025
概括
碳化物渣 (CS) 有效地激活了用 (PG) 的磨砂颗粒高炉渣 (GGBS),匹配了 (LM) 的性能. 这种生态结合剂可以减少二氧化碳排放量,利用工业废物.
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.
- 环境科学 环境科学
背景情况:
- 工业副产品 (PG) 和碳化物渣 (CS) 显示出作为水泥材料的潜力.
- 地质颗粒高炉渣 (GGBS) 激活通常使用石灰 (LM),但正在寻找替代品.
- PG-GGBS-CS三元结合剂的协同效应和性能尚未得到充分研究.
研究的目的:
- 评估PG-GGBS-CS结合剂的机械性能,水化机制和环境特征.
- 将PG-GGBS-CS结合剂与传统的PG-GGBS-LM结合剂进行比较.
- 建立碳化物渣 (CS) 作为生态粘合剂中石灰 (LM) 的可持续替代品.
主要方法:
- 进行了不受限制的压力强度 (UCS) 测试,以评估机械性能.
- 使用X射线衍射 (XRD),扫描电子显微镜 (SEM) 和热重力测量分析 (TGA) 来研究水化机制.
- 分析了二氧化碳足迹,以评估环境状况.
主要成果:
- 使用30%PG的最佳PG-GGBS-CS配方实现了28天的UCS24.88 ± 1.24 MPa,与PG-GGBS-LM (25.6 ± 1.28 MPa) 相比.
- 通过PG和CS/LM的协同激活显著增强了UCS.
- 化产品包括酸水合物 (C-S-H) 凝和埃特林吉特 (AFt).
- 与PG-GGBS-LM相比,PG-GGBS-CS粘合剂的二氧化碳排放量减少了3.2%.
结论:
- 碳化物渣 (CS) 是石 (LM) 的有效和可持续替代品,用于石颗粒高炉渣 (PG-GGBS) 的生态粘合剂.
- 该PG-GGBS-CS系统提供技术效率和碳减排的好处.
- 这项研究为大规模利用危险工业废物提供了可行的途径.
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