固化参数对电诱导加热固化碳纤维增强导电水泥基材料性能的影响:实验和有限元素方法分析
Jiabin Xie1, Yishu Zhang2, Weichen Tian3
1The School of Civil Engineering, Harbin University, Harbin 150030, China.
Materials (Basel, Switzerland)
|September 13, 2025
概括
电加热固化 (EIH) 能够在-20°C下制备水泥砂. 这种方法实现了相当于两天标准固化的早期强度,为冬季建筑挑战提供了可行的解决方案.
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.
- 建筑工程技术 建筑工程技术
背景情况:
- 冬季混凝土施工面临挑战,因为水泥在低温下水化失效.
- 在零度以下环境中开发有效固化的方法对于工程项目至关重要.
研究的目的:
- 为了研究电诱导加热固化 (EIH) 在-20°C的水泥砂的有效性.
- 检查碳纤维含量,制备方法和EIH制度对水泥砂性能的影响.
- 使用COMSOL多物理软件模拟和优化EIH固化参数.
主要方法:
- 在-20°C下制备碳纤维水泥砂 (CF-CM) 样品.
- 在不同频率 (30-70 Hz) 的恒定功率和恒定电压状态下应用EIH固化.
- 性能评估包括机械性能和固化温度分析,由COMSOL模拟支持.
主要成果:
- 碳纤维的电气透值被发现为0.6卷%.
- 经过EIH固化,早期的强度与2天标准固化相当.
- 恒定功率的EIH提供了稳定的温度 (>50°C),优于恒定电压.
- 最佳EIH功率密度为667W/m2,保持温度在60-70°C之间,以快速增强强度.
结论:
- EIH是一个科学基础的,适用于冬季混凝土建筑的解决方案.
- COMSOL多物理可以指导有效的EIH治愈方案的设计.
- 这种方法在零度以下条件下促进了水泥材料的快速强度发展.
关键词:
碳纤维是一种碳纤维.固化的温度是固化的温度.电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电力电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电力电阻电阻电力电流电流纤维增强混凝土的增强混凝土.
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