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相关概念视频

Permeability of Concrete01:25

Permeability of Concrete

459
Permeability in the context of concrete refers to how easily liquids or gases can pass through the material. This quality is crucial for assessing the water-tightness and durability of concrete structures and their resistance to chemical attacks. Concrete permeability can be determined through comparative laboratory tests. These tests typically involve sealing a concrete specimen from the sides, applying water pressure to the top surface with pressure, and measuring the amount of water passing...
459

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相关实验视频

Updated: Jan 14, 2026

Author Spotlight: Unraveling the Role of Earthworms in Enhancing Mineral Weathering for CO2 Removal
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基于化学改进方法对土壤透性的实验研究.

Hai Sang1, Bin Xiong1, Chuan Jin1

  • 1China Communications Construction First Highway Engineering Co., Ltd., Zhengzhou, Henan, China.

PloS one
|October 21, 2025
PubMed
概括

沿海基础坑面临由于土壤透性高的漏失败. 这项研究发现,聚烯酸显著减少侵蚀,稳定透性,为具有挑战性的地质条件提供有效的防漏解决方案.

科学领域:

  • 地质技术工程 地质技术工程
  • 土壤科学 土壤科学
  • 化学稳定剂 化学稳定剂

背景情况:

  • 沿海的泥沙基础坑具有很高的透性,增加了透失败的易感性.
  • 有效的防漏措施对于这些结构的稳定性至关重要.

研究的目的:

  • 评估三种化学稳定剂 (酸,二硫酸,聚烯酸盐) 在减轻沿海泥沙中的透性的有效性.
  • 为了确定最有效的稳定剂,以改善抗透性质.

主要方法:

  • 利用自己设计的透测试系统来评估透性特性.
  • 将未经处理的泥沙与用三种不同的化学稳定剂处理的土壤的性能进行比较.
  • 分析了累积侵蚀质量,侵蚀速率和透系数稳定.

主要成果:

  • 未经处理的土壤显示侵蚀质量呈指数级增长 (89.39 g/min速率).
  • 所有稳定剂都使侵蚀率降低到30g/min以下.
  • 聚烯酸盐 (4%剂量,6小时疗程) 取得了卓越的结果:侵蚀速率3.98g/min,累积质量35g,透率10−6-10−7cm/s,稳定时间6.3分钟.

结论:

  • 与酸和二硫酸相比,聚烯酸盐在降低透性和侵蚀方面表现优越.

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Integrated Field Lysimetry and Porewater Sampling for Evaluation of Chemical Mobility in Soils and Established Vegetation
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  • 这些发现为沿海基础坑的防工程提供了有效的化学改进解决方案.
  • 聚烯酸符合高标准隔离墙的防要求.