用混合短纤维增强的轻质水泥基复合材料的压缩和弹性性能的实验研究
Cong-Thuat Dang1, My Pham1, Ngoc-Hieu Dinh1
1Faculty of Civil Engineering, The University of Danang-University of Science and Technology, 54 Nguyen Luong Bang, Danang 550000, Vietnam.
Materials (Basel, Switzerland)
|June 28, 2023
概括
这项研究探讨了使用玻璃填充剂和混合纤维的轻质水泥复合材料. 无形金属纤维显著提高曲性,而尼龙纤维长度影响高峰后的性能.
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.
- 建筑材料 建筑材料
背景情况:
- 开发高性能,轻量化基于水泥的复合材料对于现代建筑至关重要.
- 传统的复合材料在强度与重量比和耐用性方面往往面临限制.
- 对于先进的建筑元件,需要创新的增强策略.
研究的目的:
- 实验性地研究基于水泥的复合材料的压缩和曲性能,其中包含空洞玻璃颗粒和混合纤维.
- 为了评估扩展玻璃与粘合剂比率,纤维类型和尼龙纤维长度对复合材料性能的影响.
- 为了优化构成薄,轻,高性能建筑元素的组成.
主要方法:
- 使用膨胀空心玻璃颗粒作为轻量级填充剂制造基于水泥的复合材料.
- 通过混合系统的无形金属 (AM) 和尼龙纤维的混合系统加强矩阵,总体积分为1.5%.
- 实验测试以确定不同EG/B比率,纤维含量和尼龙纤维长度 (6毫米对12毫米) 的压缩和曲特性.
主要成果:
- 扩大的玻璃与粘合剂 (EG/B) 比率和尼龙纤维体积对压力强度的影响最小.
- 较长的尼龙纤维 (12毫米) 与6毫米纤维相比,压力强度略有降低约13%.
- 增加AM纤维体积分数从0.25%增加到1.0%,提高了曲性高达57.2%.
- 尼龙纤维的长度显著影响了高峰后变形能力和残余强度.
结论:
- 无形金属纤维有效地提高了轻质水泥复合材料的屈曲性.
- 尼龙纤维的长度在高峰后的曲行为和整体柔性方面发挥着关键作用.
- EG/B比率和尼龙纤维含量对压力强度的影响有限,建议专注于纤维类型和长度以优化性能.
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