开发负温度水泥乳化青喷材料,以喷性能和风病学参数为基础
Yitong Hou1, Kaimin Niu1,2, Bo Tian1,2
1School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
Materials (Basel, Switzerland)
|July 13, 2024
概括
这项研究开发了一种水泥乳化青复合材料 (CEAC),用于在寒冷的高原环境中喷. 与传统水泥泥相比,优化的CEAC表现出优越的抗性和喷性.
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.
- 建筑材料 建筑材料
背景情况:
- 开发适用于极端环境的喷涂性建筑材料,如高海拔,低温地区至关重要.
- 传统的水泥材料在这种条件下经常面临耐用性和性能方面的挑战.
研究的目的:
- 开发和优化水泥乳化青复合材料 (CEAC) 用于在平原负温度环境中喷雾应用.
- 评估开发的CEAC的喷性能,风湿性质,耐性和孔隙结构.
主要方法:
- 使用可控变量方法研究了水固体比率,酸水泥替代,乳化青含量,砂粘合剂比率和PVA纤维含量的影响.
- 测量了风湿学参数 (产量应力,塑料粘度) 和喷性能 (积聚厚度,反弹率).
- 分析了耐性和孔隙结构,并与传统的水泥泥 (CS) 相比较.
主要成果:
- 为喷涂CEAC确定了最佳比例:0.14水固体比率,0.5沙结合剂比率,25%酸水泥替代,5%乳化青含量和1.5%PVA纤维.
- 收益应力/塑料粘度和积聚厚度之间发现了正相关性;与反弹率有负相关性.
- 在冷解周期后,CEAC表现出明显更好的抗性和比CS更低的质量/强度损失,这归因于毛细血管和巨孔含量的差异.
结论:
- 优化的CEAC配方为寒冷的高原环境提供了出色的喷能力和增强的抗性.
- 风病学参数有效地描述了CEAC的喷性能.
- 在具有挑战性的气候条件下,优化CEAC为传统水泥泥提供了持久的替代品.
相关概念视频
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01:28Effects of Air-entrainment in Concrete
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01:14Design Example: Managing Concrete Workability
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01:29Frost Resistant Concrete
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01:20Hot Weather Concreting
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