制造优质绿色CSA支持的OPC水泥,具有最佳的物理和机械性能
Hala A Hossein1, Bassem S Nabawy2, Samah A Sanad3
1Refractories, Ceramics & Building Materials Department, National Research Centre, Giza, Egypt.
Scientific reports
|August 9, 2025
概括
这项研究通过添加硫硫氨酸 (CSA) 来增强普通波特兰水泥 (OPC),提高其物理和机械性能,同时减少二氧化碳排放和能源使用. 最佳混合物 (2%CSA) 显示出优越的强度和密度,为水泥行业提供了可持续的替代品.
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.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 普通波特兰水泥 (OPC) 的生产是能源密集型的,也是二氧化碳排放的重要来源.
- 提高水泥性能和减少环境影响是建筑行业面临的关键挑战.
- 硫氨酸 (CSA) 水泥具有降低结温度和减少二氧化碳足迹的潜力.
研究的目的:
- 调查不同百分比的CSA对OPC的物理和机械性能的影响.
- 评估CSA作为可持续水泥生产的补充水泥材料的潜力.
- 确定最佳的CSA含量,以提高水泥性能和减少对环境的影响.
主要方法:
- 制备OPC-CSA糊混合物,其中CSA含量为0%,1%,2%和3%.
- 物理性质 (表面密度,比重,孔隙性) 和机械性质 (不受限制的压力强度 - UCS) 在90天的固化过程中的表征.
- 使用扫描电子显微镜 (SEM) 与能量分散式X射线 (EDS) 进行微结构分析.
- 使用X射线光 (XRF) 进行化学成分分析.
- 使用福里埃变换红外光谱 (FTIR),差异热分析 (DTA) 和热重力测量分析 (TGA) 的相位分析.
主要成果:
- 含有2%CSA (C混合物) 的混合物在90天固化后表现最好.
- 混合物C的最佳性能:压力强度为52.5MPa,孔隙度为2.86%,表面密度为2.015g/cc,比重为2.405g/cc.
- 加入CSA导致了较低的结温度 (1250°C与OPC的1450°C相比),并减少了二氧化碳排放.
- 微观结构分析证实CSA添加后改善了糊状结构.
结论:
- 加入2%的CSA显著提高了OPC的物理和机械性能.
- 开发的OPC-CSA混合物提供了比传统OPC更可持续的替代品,因为能耗更低,二氧化碳排放减少.
- 这些发现可从实验室扩展到工业应用,以改善水泥生产.
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