使用EAF渣合成的高铁素 (FePC) 的水化和碳化固化
Elijah Adesanya1, Visa Isteri2, Aniruddha Baral3
1Faculty of Technology, Fiber and Particle Engineering Research Unit, University of Oulu, PO Box 4300, 90014 Oulu, Finland.
概括
电弧炉 (EAF) 渣渣可以取代泥生产中的20%的原材料. 这种可持续的方法产生富含费里特的石,具有增强的水化特性,并在碳化固化后增加了砂强度.
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.
- 可持续材料 可持续材料
背景情况:
- 传统的水泥生产对环境产生了重大影响.
- 电弧炉 (EAF) 渣是一种具有利用潜力的工业副产品.
- 开发可持续的替代品用于水泥生产至关重要.
研究的目的:
- 调查使用EAF渣作为在水泥基合成中部分替代原材料的可行性.
- 为了描述EAF渣衍生克林克的组成和水化行为.
- 评估碳化固化对EAF渣渣基水泥材料性能的影响.
主要方法:
- 合成富含费里特的石,用EAF渣渣取代20%的石灰岩,铁和石来源.
- 分析制剂的组成 (阿莱特,费里特,贝莱特).
- 使用XRD和SEM等技术评估化动力学和相位演变.
- 在碳化固化条件下对砂强度发展的评估.
主要成果:
- 通过使用EAF渣成功合成富含费里特的 (47%的阿利特,32%的费里特,20%的贝莱特).
- 添加石膏加快了阿里特和铁矿阶段的水合,形成波特兰,C-S-H和埃特林.
- 富含Fe/Al的状石榴石是铁溶解和二氧化反应的二次产物.
- 碳化固化导致石减少和石分解,但由于碳酸的形成,砂强度增加.
结论:
- 是一种可行的可持续替代原料,用于生产水泥.
- 基于EAF渣的石具有有利的水合特性,特别是添加石膏时.
- 碳化固化通过二次阶段的形成提高了EAF渣基砂的强度,尽管有一些水化产品分解.
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