大容量流体水泥材料的造模拟:材料性能和造参数的影响
Junkai Wang1, Shenyou Song2, Wen Xu1,3
1Jiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China.
Materials (Basel, Switzerland)
|November 14, 2023
概括
这项研究使用模拟来优化水下道的混凝土造. 关键发现显示了具体的混凝土性能,出口设计确保了优良的紧性和稳定性,减少了浪费.
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
背景情况:
- 交通拥堵需要跨水运输,沉浸式道是关键的解决方案.
- 在造过程中确保混凝土的紧性和稳定性是沉浸式道施工中的一个关键挑战.
- 传统的实验室方法对于大量的混凝土造是不够的,导致资源效率低下.
研究的目的:
- 通过模拟方法研究造参数和新鲜混凝土特性对稳定性和紧性的影响.
- 确定最佳的混凝土性能和造条件,以实现高效的潜水道建设.
- 解决大型具体应用中传统方法的局限性.
主要方法:
- 采用模拟方法来模拟混凝土造过程.
- 分析表面张力,屈服应力和塑料粘度对混凝土性能的影响.
- 评估不同的出口设计和造速度,以获得最佳性能.
主要成果:
- 当表面张力超过0.03N/m时,可以实现出色的造紧性,在50Pa时具有屈服应力,在50Pa时具有塑料粘度.
- 采用3个大口和6个小口的设计,加上3厘米/秒的造速度,使得混凝土的紧度更高.
- 当混凝土产应力超过3Pa时,可以防止聚合物分离;当分离发生时,粗性有助于降低分离速度.
结论:
- 模拟为实验室方法提供了一种有效的替代方案,用于优化大批量混凝土造.
- 在沉浸式道中,特定的气质特性 (表面张力,屈服应力,塑性粘度) 对于实现所需的混凝土紧性至关重要.
- 优化的出口配置和造速度对于提高造混凝土的稳定性和质量至关重要.
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