用水溶性聚合物修饰的膨胀土壤的机械和显微镜表征
Fan Yang1, Yong Zhao1, Huanyu Dong2
1Shandong labor vocational and technical college, Jinan, 250300, China.
Scientific reports
|January 17, 2025
概括
广土壤的环保聚合物修饰显著改善了机械性能,减少了胀和裂. 这种环保的方法为传统的土壤改造方法提供了一个可持续的替代方案.
科学领域:
- 地质技术工程 地质技术工程
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 广的土壤在土木工程项目中构成重大挑战,因为它们的体积变化潜力很大.
- 传统的土壤改造方法往往会对环境产生不利的影响.
- 开发环境友好的替代方案,以扩大土壤稳定,对于可持续建筑至关重要.
研究的目的:
- 调查环保聚合物的有效性在修改广的土壤.
- 分析聚合物修饰对膨胀土壤机械和显微特性的影响.
- 为了评估在经过修改的膨胀土壤中减少膨胀,膨胀压力和裂的发展.
主要方法:
- 在室内进行了实验室测试,以评估使用环保聚合物修饰的膨胀土壤的特性.
- 测量了机械性能,包括阿特伯格极限,压缩特性和强度.
- 进行了微观分析,以了解修改后的土壤中的结构变化.
主要成果:
- 聚合物修饰显著降低了液体极限 (52.14%) 和可塑性指数 (77.36%),同时增加了塑料极限 (20.83%).
- 最大干密度下降了5.11%,最佳水分含量增加了28.47%.
- 压力和剪切强度在4%的剂量达到峰值,变形,胀 (54.57%),胀力 (15-57%) 和裂宽度 (61.68%) 减少. 显微镜检测显示,由于凝膜的形成,水友性矿物质减少,毛孔细化.
结论:
- 环保的聚合物改造有效地提高了广土壤的工程性能.
- 该聚合物通过降低水友矿物质含量和创造更密集的微观结构来起作用,减轻胀并提高强度.
- 这种环保的方法为建筑中的扩张性土壤稳定提供了可行和可持续的解决方案.
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