关于影响液压工程水泥复合材料层粘合性能因素的研究
Yupu Wang1,2, Jiazheng Li1,2, Yan Shi1,2
1Institute of Materials and Structure, Changjiang River Scientific Research Institute, Wuhan 430010, China.
Materials (Basel, Switzerland)
|October 28, 2023
概括
研究液压工程混凝土复合材料 (HECC) 显示,更长的倒间隔减少了层粘合. 表面粗性显著提高了HECC层的性能,将粘合性能提高了高达200%.
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:
- 液压工程混凝土复合材料 (HECC) 中的层粘合对于液压结构至关重要.
- 这种粘合涉及HECC-HECC和HECC-普通砂 (NM) 接口.
- 了解影响这种结合的因素对于材料的应用和耐用性至关重要.
研究的目的:
- 为了研究倒间隔,方向,和和表面粗度对HECC层粘合的影响.
- 为了量化粘合强度的减少与增加的倒时间.
- 为了确定基板条件和表面处理对复合层性能的影响.
主要方法:
- 准备HECC样品时,倒水间隔不同 (0分钟至28天).
- 粘合性能在不同的倒方向 (水平/垂直) 和和度 (0%至100%) 下进行了测试.
- 使用砂技术改变了表面粗度,并测量了粘合强度.
主要成果:
- 较长的倒间隔显著降低了层粘合强度,低于非层混凝土强度的50% (min. 1.12 MPa) 的压力.
- 水平的屈曲强度超过垂直,但水平的压力强度低于垂直.
- 0%和率降低了15-20%的粘合;表面粗度提高了180-200%的性能,HECC/NM层的性能提高了20.5-37.5%.
结论:
- 倒水间隔是影响HECC层键强度的关键因素.
- 表面粗度是提高HECC层粘合性能的一种高度有效的方法.
- 优化基板和和表面处理是最大限度地提高HECC在液压工程中的应用潜力的关键.
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