纤维增强透气地质聚合物混凝土的机械性能
Lina Xu1, Qilong Liu2, Xu Ding2
1School of Transportation Science and Engineering, Jilin Jianzhu University, Changchun 130118, China.
Materials (Basel, Switzerland)
|September 9, 2023
概括
这项研究开发了高强度,透的地质聚合物混凝土,使用活性金属和钢纤维. 最佳的混合设计和纤维含量显著提高了耐用建筑应用的机械性能和微观结构.
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.
- 地质聚合物技术的技术
背景情况:
- 透混凝土提供了环境效益,如雨水管理.
- 地质聚合物混凝土为传统波特兰水泥提供了一个可持续的替代方案.
- 提高透性地质聚合物混凝土的机械性能对于其实际应用至关重要.
研究的目的:
- 为了准备和表征纤维增强的透气地质聚合物混凝土,使用活性金属.
- 研究混合物设计参数 (激活器模量,激活与固体比率) 和钢纤维含量对混凝土性能的影响.
- 分析开发材料的微观结构和固化机制.
主要方法:
- 不受限制的压力强度测试.
- 扫描电子显微镜 (SEM) 用于微观结构分析.
- 能量分散光谱 (EDS) 和X射线衍射 (XRD) 用于材料组成和相位分析.
主要成果:
- 在性激活器模量为1.4和激活与固体比为0.9的条件下实现了最佳的甲甲激活,从而产生了最高的压力强度.
- 活性金属粉具有密集的,无裂纹的微结构,具有强大的氧和氧键,确保了良好的聚合物粘附性.
- 钢纤维添加剂提高了强度,0.3%的体积提供了最佳的不受限制的压力强度;观察到早期强度的发展,到第三天达到28天强度的43.62%.
结论:
- 具有高强度和透性的纤维增强透性地质聚合物混凝土可以使用活性化金属来成功制备.
- 开发的混凝土具有出色的机械性能和坚固的微观结构,适合各种建筑应用.
- 优化混合设计和钢纤维增强是实现透性地质聚合物混凝土所需性能特性的关键.
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