基于离散和连续光谱模型的玄武岩纤维青混合物的粘弹性行为的表征
Qi Huang1, Xiaogang Kang2, Pengfei Chen3
1School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou, P. R. China.
PloS one
|February 1, 2024
概括
将玄武岩纤维添加到青混合物中,可以提高其强度和抗压放松和变形的抵抗力. 发现改善粘弹性行为的最佳纤维含量为0.2%.
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.
- 聚合物物理 聚合物物理
背景情况:
- 青混合物是粘弹性材料,其性能对道路基础设施至关重要.
- 了解青的粘弹性行为对于预测其长期性能至关重要.
- 玄武岩纤维越来越多地被用作增强青性能的添加剂.
研究的目的:
- 为了评估玄武岩纤维含量对青混合物的粘弹性行为的影响.
- 用离散和连续频谱模型分析放松模量E (t) 和爬行合规J (t) 的主曲线.
- 为了确定青混合物的最佳玄武纤维剂量.
主要方法:
- 复杂的模量测试对含有不同基石纤维含量的青混合物进行了复杂的模量测试 (0%,0.1%,0.2%,0.3%).
- 粘弹性参数的总曲线是使用通用西格形模型 (GSM) 和克拉默斯-克罗尼格 (K-K) 关系构建的.
- 使用离散和连续频谱模型转换主曲线,以获得E (t) 和J (t) 模型.
主要成果:
- 岩纤维的添加改善了青混合物的强度,应力松和变形阻力.
- 青混合物的内部结构被玄武岩纤维改变,从而提高了性能.
- 根据粘弹性主曲线,最优的基岩纤维剂量被确定为0.2%.
- 离散和连续模型转换方法都产生了非常准确的结果.
结论:
- 玄武岩纤维显著增强了青混合物的粘弹性.
- 0.2%的最佳基岩纤维含量提供了性能改善的最佳平衡.
- 准确的粘弹性模型E (t) 和J (t) 可以通过离散和连续的频谱模型转换得到.
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