基于香烟的活性砂:实验,统计和环境影响研究
Syed Khaja Najamuddin1, Megat Azmi Megat Johari2, Ashraf A Bahraq3
1Department of Civil and Environmental Engineering, King Fahd University of Petroleum & Minerals, 31261, Dhahran, Saudi Arabia.
Environmental science and pollution research international
|October 18, 2024
概括
这项研究开发了使用烟 (SiMF) 的活性砂,具有出色的流动性和强度. 与传统水泥相比,这些环保型砂的二氧化碳排放量较低,适合于现实世界的应用.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续的建筑材料 可持续的建筑材料
- 地质化学 地质化学
背景情况:
- 传统的波特兰水泥生产由于高二氧化碳排放而对环境产生重大影响.
- 活性材料 (AAMs) 提供了一个可持续的替代品,利用工业副产品作为结合剂.
- 化烟雾 (SiMF) 是一个未充分利用的工业副产品,在AAM中具有作为粘合剂的潜力.
研究的目的:
- 评估仅使用SiMF制成的活性砂的流动性和强度.
- 通过统计建模优化基于SiMF的AAM混合设计.
- 通过生命周期评估来评估基于SiMF的AAM对环境的影响.
主要方法:
- 制备18种基于SiMF的性活性砂混合物,其粘合剂含量,活性剂含量和NaOH度各不相同.
- 使用扫描电子显微镜 (SEM),X射线衍射 (XRD) 和富里埃转换红外光谱 (FTIR) 进行硬化糊的表征.
- 使用差异分析 (ANOVA) 和响应表面方法 (RSM) 的优化,其次是生命周期评估 (LCA).
主要成果:
- 470公斤/立方米SiMF,43%的性激活剂和8M或12M NaOH的最佳混合物产生了最佳的流量和强度.
- XRD和FTIR证实Nchwaningite是主要产品,其次阶段受到度的影响.
- 基于SiMF的AAM显示了比水泥的二氧化碳足迹 (0.08公斤CO2/公斤) 显著低,活性剂是排放的主要贡献者.
结论:
- 在室温固化活性砂中,SiMF可以有效地用作底部粘合剂.
- 优化的SiMF-AAM表现出增强的可加工性,机械性能和减少对环境的影响.
- 这些发现支持SiMF-AAMs作为建筑中的可持续替代品的可行性.
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