通过玄武岩纤维和硫酸胡须提高混凝土的机械性能:优化压力强度,弹性和孔隙结构
Junzhi Zhang1,2, Yueming Wang1, Xixi Li1
1College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
Materials (Basel, Switzerland)
|April 13, 2024
概括
修改的硫酸鞭毛片 (MCSWs) 显著提高了混凝土的压力强度和弹性模量. 玄武纤维 (BFs) 和CSW也提高了强度,但MCSW通过优化孔隙结构来表现出优越的性能.
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.
- 混凝土技术 混凝土技术
背景情况:
- 混凝土的机械性能对基础设施至关重要.
- 优化混凝土微结构可以提高性能.
- 像基岩纤维 (BFs) 和硫酸胡须 (CSWs) 这样的纤维被探索为添加剂.
研究的目的:
- 研究BF,CSW和修改CSW (MCSW) 对混凝土的压力强度和弹性动态模量的影响.
- 分析混凝土中的微观结构变化,使用入孔径学 (MIP).
- 为了将混凝土的特性与孔隙结构和碎形尺寸相关联.
主要方法:
- 用BF,CSW和MCSW准备了混凝土样本.
- 测量了压力强度和弹性动态模量.
- 侵入孔径测量 (MIP) 用于分析孔隙结构和计算碎形尺寸.
主要成果:
- 无论是CSW还是BF都增加了混凝土的压力强度.
- CSW增强了弹性的动态模量;BF没有显著的影响.
- 与CSW相比,MCSW在压力强度和弹性模量方面表现出显著更大的改善.
- BF和CSW改变了混凝土孔状结构,影响了表面的碎形尺寸.
- CSWs减少了墨水瓶孔,而BFs增加了它们.
- 大孔和过渡孔的机械性质和碎形尺寸之间发现了强烈的相关性.
结论:
- 在改善混凝土的机械性能和微观结构方面,MCSWs非常有效.
- 纤维类型显著影响混凝土的孔隙结构和性能.
- 分形维度分析提供了关于混凝土微观结构和机械行为之间的关系的见解.
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