在不同NaOH度下对GGBFS和甲基地质聚合物的收缩和压力强度进行研究
Yen-Chun Chen1, Wei-Hao Lee1, Ta-Wui Cheng1
1Institute of Mineral Resources Engineering, National Taipei University of Technology, Taipei 10608, Taiwan.
Materials (Basel, Switzerland)
|March 13, 2024
概括
这项研究调查了甲高林 (MK) 和氧化 (NaOH) 如何影响地质聚合物 (GP) 收缩和强度. 优化这些因素可以产生可持续的GP,其性能与普通波特兰水泥 (OPC) 相美.
科学领域:
- 材料科学与工程 材料科学与工程
- 可持续的建筑材料 可持续的建筑材料
- 地质聚合物化学 地质聚合物化学
背景情况:
- 地质聚合物 (GPs) 为传统水泥提供可持续的,低碳的替代品.
- 基于高炉渣渣 (GGBFS) 的土砂颗粒化GP的显著收缩限制了它们的广泛应用.
- 控制地质聚合参数对于减轻收缩和增强机械性能至关重要.
研究的目的:
- 调查甲可林 (MK) 替代和氧化 (NaOH) 度对基于GGBFS的GP的收缩和压力强度的影响.
- 为基于GGBFS的全科医生建立一个优化的参数范围,以提高性能.
- 为了验证响应表面方法 (RSM) 对地质聚合物特性的预测准确性.
主要方法:
- 一个3x3实验矩阵,改变MK替换比率 (0%,50%,100%) 和NaOH度 (6M,10M,14M).
- 差异分析 (ANOVA) 确定MK和NaOH对压力强度和收缩的意义.
- 第二阶响应表面方法 (RSM) 用于建模和预测GP特性.
主要成果:
- 增加MK替代减少了收缩,但降低了压力强度,特别是较低的NaOH度 (6M).
- 当MK增加时,需要更高的NaOH度来提高压力强度.
- ANOVA证实了MK和NaOH对强度的显著个体影响,以及对收缩的相互作用效应.
- RSM模型显示出高的预测准确性 (强度R2=0.99,收缩R2=0.98).
结论:
- 确定了一个优化的参数范围,产生基于GGBFS的GP,其压力强度 (34.9MPa) 和收缩率 (0.287%) 与普通波特兰水泥 (OPC) 相似.
- 该研究提供了一种可靠的方法,使用RSM来预测和控制地质聚合物性能.
- 这些发现支持开发具有定制性质的可持续地质聚合物结合剂.
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