基本氧炉渣的机械化学激活:对粒子修饰,水化行为和微观结构发展的洞察
Maochun Xu1, Liuchao Guo1,2, Junshan Wen3
1College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211800, China.
Materials (Basel, Switzerland)
|August 14, 2025
概括
乙醇-二醇胺 (EDIPA) 的机械化学激活提高了基本氧炉渣 (BOFS) 的磨粉能力和反应性. 这一战略提高了BOFS粘贴的压力强度,促进了其在可持续建筑材料中的使用.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 可持续建筑 可持续建筑
背景情况:
- 基本氧炉渣 (BOFS) 是一种工业副产品,有可能用于建筑应用.
- 提高BOFS的研磨性和水化反应性对于其广泛的工业利用至关重要.
- 现有的激活方法可能缺乏大规模使用的效率或可扩展性.
研究的目的:
- 调查乙醇-二醇胺 (EDIPA) 作为BOFS的机械化学激活剂.
- 使用EDIPA增强BOFS的磨砂性和水化反应性.
- 促进BOFS在低碳建筑材料中的高价值利用.
主要方法:
- 使用乙醇-二醇胺 (EDIPA) 的机械化学激活.
- 颗粒大小分布和静止角度分析.
- 对BOFS糊的压力强度测试.
- 导电性测试用于研究离子复杂化.
- 进行X射线衍射 (XRD) 和热重力测量 (TG) 分析.
- 微观结构的观察.
主要成果:
- EDIPA显著改进了颗粒大小分布,并减少了静止角.
- 28天后,BOFS糊的压力强度增加了25.4 MPa,使用0.08%的EDIPA.
- EDIPA促进了活性矿物阶段的溶解,并加速了水合.
- 观察到特定的水化产品 (Mc,C-S-H) 和精炼的Ca (OH) 2晶体的形成.
- 实现了微结构密度,降低孔隙性和改善机械性能.
结论:
- EDIPA是一种有效,经济和可扩展的机械化学激活剂,用于BOFS.
- 这种激活策略显著改善了BOFS的磨砂性和水分.
- 该研究促进了BOFS在可持续,低碳建筑材料中的高价值利用.
相关概念视频
Steel Manufacturing
790
Steel manufacturing is a multi-stage process that begins by smelting iron ore into cast iron in a blast furnace. This initial stage involves layering iron ore with coke, a type of fuel, and crushed limestone within the furnace. The coke is ignited with a high volume of air, leading to the creation of carbon monoxide, which acts to reduce the iron ore to pure iron.
During this smelting process, limestone plays a crucial role by forming slag. Slag captures impurities within the molten iron, such...
During this smelting process, limestone plays a crucial role by forming slag. Slag captures impurities within the molten iron, such...
790
Pozzolans
190
Pozzolans are siliceous or aluminous materials blended with Portland cement. They interact with the calcium hydroxide produced during the hydration of Portland cement and contribute to improved strength and durability of concrete. The pozzolanic activity, a measure of a pozzolan's effectiveness, is typically assessed using the strength activity index, as defined in ASTM C 618-93, which calculates the ratio of the compressive strength of cement mixtures with and without pozzolan.
Fly ash is...
Fly ash is...
190
Sample Preparation for Analysis: Advanced Techniques
451
Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
451
Strength and Heat of Hydration
345
The hydration of cement is an exothermic reaction in which heat is generated as cement hydrates. This heat of hydration is critical to cement's strength development. The rate at which this heat is generated affects the temperature rise, with a majority of the heat being released early in the hydration process, half within the first three days, and about 75% within the first week.
The heat of hydration for each cement compound is significant; for instance, tricalcium aluminate (C3A) and...
The heat of hydration for each cement compound is significant; for instance, tricalcium aluminate (C3A) and...
345


