由生物基材料改进的的机械特性和水稳定性:一种环保的方法
Yifei Liu1, Chaoxin Tang2, Jixiang Wen3
1College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China; Problematic Rock and Soil Museum, Northwest A&F University, Yangling 712100, China; School of Transportation, Southeast University, Nanjing 211189, China.
The Science of the total environment
|February 25, 2024
概括
生物基材料,如藻酸盐和亚麻纤维显著提高了的工程性能. 这种可持续的方法提高了土壤的强度和耐水性,而不会因传统处理而造成环境污染.
科学领域:
- 地质技术工程 地质技术工程
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 由于强度低和水的稳定性差,土面临工程挑战.
- 传统的土壤修改 (水泥,石灰) 导致环境污染.
- 需要可持续的替代品来改善属性.
研究的目的:
- 评估生物基材料 (基酸盐,桑坦,棉纤维,亚麻纤维) 在治疗病时的有效性.
- 确定最佳的生物基修改策略,以提高的机械性能和水的稳定性.
- 为了研究在干湿周期下改进的的性能,并分析微观结构机制.
主要方法:
- 测试各种生物基材料处理的的强度,分解和耐水性.
- 在优化土壤混合物上进行干湿循环试验.
- 进行显微观测,以了解修改的结合机制.
主要成果:
- 藻酸盐 (1.0%) 显著提高了性强度和抗分解性,降低了透性,并提高了反水性.
- 亚麻纤维 (0.45%) 提高了压力和拉伸强度,而不会对水的稳定性产生负面影响.
- 1.0%的藻酸盐和0.45%的亚麻纤维的组合在机械性能和水稳定性方面取得了最佳的改善,在干湿循环后减少了强度损失和质量损失.
结论:
- 生物基材料,特别是藻酸盐,为改善的工程性能提供了有效和可持续的解决方案.
- 藻酸盐形成离子桥 (Ca2+),结合土壤颗粒,增强的完整性和稳定性.
- 优化的生物修饰策略显著提高了的机械强度和耐水性,为传统方法提供了一个环保的替代方案.
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