从页岩副产品中开发矿物泡块,通过加速碳化
Adheena Thomas1, Can Rüstü Yörük1, Mustafa Cem Usta1
1Department of Materials and Environmental Technology, Tallinn University of Technology, Tallinn 12616, Estonia.
ACS omega
|October 20, 2025
概括
加速碳化固化显著提高了用页岩灰 (OSA) 制成的可持续矿物泡块 (MFB). 这一过程提高了压力强度,并最大限度地减少了二氧化碳,推进了环保建筑材料.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续建筑 可持续建筑
- 化学工程是化学工程的重要组成部分.
背景情况:
- 矿物泡块 (MFBs) 为可持续建筑提供了潜力.
- 在MFB中整合石油页岩灰 (OSA) 等残留资源对于资源效率至关重要.
- 加速碳化固化 (ACC) 是一种新兴的增强水泥材料的技术.
研究的目的:
- 调查ACC对高比例OSA生产的MFB特性的影响.
- 评估ACC对压力强度,密度,多孔性和二氧化碳吸收的影响.
- 了解基于OSA的MFB中由ACC引起的矿物学和微观结构变化.
主要方法:
- 使用水泥 (CEM-I 42.5R) 和不同量的OSA (70-85%的剩余资源) 来制造MFB.
- 粉被用作一个孔隙形成剂.
- 样品经过ACC条件 (100% CO2,1 bar,~65% RH) 和与无碳化对应物进行比较.
主要成果:
- 与非碳化样本 (1.1-3.4 MPa) 相比,ACC处理显著增加了压力强度 (2.5-5.7 MPa).
- 碳化导致波特兰石转化为石,最大限度地减少二氧化碳 (约140公斤/).
- 微结构分析显示了碳化诱导的密度化,孔隙性降低和CaCO3的形成,增强了MFB的完整性.
结论:
- ACC是一种有效的方法来提高基于OSA的MFB的性能.
- 大量的OSA集成是可行的ACC,导致可持续的建筑材料.
- 该研究表明,ACC处理的MFB具有显著的CO2矿化潜力,有助于碳捕获和利用.
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