在不同的固化温度下,高容量飞水泥的水化和机械性能
1Department of Civil and Environmental Engineering, Gachon University, Seongnam 13120, Gyeonggi-do, Republic of Korea.
Materials (Basel, Switzerland)
|October 16, 2024
概括
高容量飞灰 (HVFA) 混凝土的水化和强度对固化温度敏感. 高温显著影响HVFA混凝土的性能,远远超过普通波特兰水泥混凝土.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 建筑材料 建筑材料
背景情况:
- 高容量飞灰 (HVFA) 混凝土是普通波特兰水泥 (OPC) 的可持续替代品.
- 了解固化条件对HVFA混凝土性能的影响对于其广泛应用至关重要.
- 固化温度是影响水泥水化和混凝土性能的重要环境因素.
研究的目的:
- 研究不同固化温度对HVFA水泥水化过程的影响.
- 评估HVFA混凝土在不同固化状态下的机械性能,特别是压力强度.
- 为了比较HVFA混凝土与OPC混凝土的温度灵敏度.
主要方法:
- 检查的水化特性,包括在不同固化温度 (13°C,23°C,43°C) 下设置水化时间和热量.
- 准备好的混凝土样本具有不同的飞灰 (FA) 含量 (0%,35%,55%).
- 在多个年龄段 (7,28,56和91天) 测量了在不同温度下固化的标本的压力强度.
主要成果:
- 与OPC混凝土相比,HVFA混凝土对固化温度的敏感性增加.
- 诸如设置时间和热演变等水化特性受到HVFA混合物固化温度的显著影响.
- 在HVFA混凝土中压力强度的发展特别受到所有测试年龄的固化温度的影响.
结论:
- 固化温度对高容量飞灰混凝土的性能起着至关重要的作用.
- 在硬化过程中,HVFA混凝土的机械性能比传统的OPC混凝土更容易受到热变化的影响.
- 优化固化温度对于实现所需的性能和确保HVFA混凝土在建筑中的可靠性至关重要.
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