渣泥的反应性与酸水泥的强度发展之间的联系
Josipa Skočibušić Pejić1, Alma-Dina Bašić1, Martina Grubor1
1Department of Materials, Faculty of Civil Engineering, University of Zagreb, Andrije Kačića Miošića 26, 10000 Zagreb, Croatia.
Materials (Basel, Switzerland)
|July 27, 2024
概括
在酸水泥 (CAC) 中添加地面颗粒高炉渣 (GGBS) 减轻了强度损失. R3测试有效地预测了GGBS反应如何影响CAC压力强度随着时间的推移.
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.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 酸水泥 (CAC) 容易因转化反应而失去强度.
- 已知添加地面颗粒高炉渣 (GGBS) 抑制了CAC中的这种转化过程.
- GGBS的化学和矿物质成分影响其反应性和有效性.
研究的目的:
- 评估R3测试在预测GGBS在CAC中的反应性的有效性.
- 了解GGBS反应如何影响CAC-GGBS系统的压力强度和微观结构.
- 为了将早期测试结果与长期性能相关联.
主要方法:
- 在R3测试中使用异热热量计和结合水的测量.
- 准备好的CAC砂和水泥糊,其中30%的GGBS替代品.
- 在不同年龄段 (6小时,24小时,28天) 评估压力强度并分析微观结构.
主要成果:
- 高度反应的GGBS显示出较低的初始强度损失,但24小时后由于斯特拉丁石的形成而导致的损失更高.
- 波佐拉尼反应和斯特拉丁石的形成导致28天的强度损失减少与反应性GGBS.
- R3试验结果与GGBS对CAC压力强度所观察到的效果有很好的相关性.
结论:
- R3测试是一种快速可靠的方法,用于预测GGBS对CAC强度的影响.
- GGBS的反应性显著影响了CAC的水合动力学,相位演变和长期强度发展.
- 基于反应性的GGBS选择优化对于提高CAC耐用性至关重要.
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