煤炭衍生石墨烯氧化物对混凝土机械和微观结构特征的影响
Iftekhar Dipta1, Kam Ng1, Jacob Chadwick2
1Department of Civil and Architectural Engineering and Construction Management, University of Wyoming, 1000 E. University Avenue, Laramie, WY 82071, USA.
Materials (Basel, Switzerland)
|June 27, 2025
概括
煤制成的石墨烯氧化物 (GO) 为石墨制成的GO提供了一个具有成本效益的替代方案,用于增强混凝土. 这项研究表明,在混凝土中出现了显著的改进.
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.
- 纳米技术纳米技术
背景情况:
- 石墨衍生的石墨烯氧化物 (GDGO) 增强了混凝土的机械性能和微观结构.
- GDGO的高成本限制了其在建筑业的商业应用.
- 具体来说,需要为GDGO寻找具有成本效益的替代品.
研究的目的:
- 研究煤炭衍生石墨烯氧化物 (GO) 作为GDGO的可持续和经济替代品.
- 评估不同煤炭衍生GO比例对混凝土性能的影响.
- 确定最佳的GO含量,以改善机械性能和微观结构特性.
主要方法:
- 实验室实验将煤炭衍生GO纳入混凝土混合物.
- 作为部分水泥替代品和添加剂,不同的GO百分比 (水泥重量为0.05%~1.5%).
- 机械性能测试 (柔性,分裂拉力,压力强度,弹性模量,波桑比率).
- 微观结构分析和水化热的评估.
主要成果:
- 最少0.05%重量%的GO替换显示强度增加:曲 (3.3%),分裂拉伸 (2.3%),压缩 (21.2%).
- 最佳的GO添加剂含量 (0.05%0.25重量%),最大限度地提高了机械性能.
- 0.10重量%的GO添加剂产生了显著的强度增长:曲性 (14.05%),分裂拉伸性 (9.7%),压缩性 (34.2%).
- 在GO混凝土中观察到较低的Ca/Si比率,表明增强了钢筋性能.
结论:
- 来自煤炭的GO是一种可行的,成本效益高的替代品,用于GDGO的混凝土增强.
- 优化的GO添加显著改善了混凝土的机械性能和微观结构.
- 对GO钢筋混凝土的进一步研究可以促进可持续的建筑实践.
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