实验研究关于素修饰的动态行为
Dan Guo1,2, Shengjun Shao3,4, Ruifeng Guo5
1Institute of Geo-Engineering, Xi'an University of Technology, Xi'an, 710048, Shaanxi, China.
Scientific reports
|July 29, 2024
概括
将素纤维添加到土中,可以显著增强其动态特性. 1%的最佳红素含量提高了土壤的强度和刚性,同时减少了能量消耗,使其更有弹性.
科学领域:
- 地质技术工程 地质技术工程
- 土壤力学 土壤力学
- 材料科学 是一种材料科学.
背景情况:
- 低质土壤在地质工程中存在独特的挑战,因为它们的可折叠性和对水分的敏感性.
- 一种生物聚合物lignin被探索为一种可持续的修改,以改善土壤的特性.
- 了解修改土壤的动态行为对于抗震能力和基础设施发展至关重要.
研究的目的:
- 为了研究素修饰的动态特性和强度特征.
- 为了确定最佳的素纤维含量,以提高洛斯的动态性能.
- 分析水分含量和限制压力对修改后的度的影响.
主要方法:
- 动态性能和强度测试使用空心圆柱扭转剪切装置进行.
- 素纤维含量从0%变化到4%以评估其影响.
- 在不同的水分含量 (12-21%) 和限制压力 (100-300 kPa) 的情况下,对最佳修饰的溶液进行了测试.
主要成果:
- 发现最优的素含量为1%,导致动态剪切应力增加73.8%,动态剪切模量增加26%,动态缓冲比率减少60%,与纯相比.
- 改进的的动力强度随着水分含量的增加而下降,但随着限制压力的增加而增加.
- 随着动态剪压和周期数量的增加,地震特性得到了改善.
结论:
- 素修改是一种有效的方法,可以增强的动态特性和强度.
- 最佳的素含量 (1%) 显著改善了刚性,强度和能量消散特性.
- 这项研究提供了有价值的见解,了解在不同环境条件下,素修饰的地震性能.
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