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相关概念视频

Additives and Fillers in Concrete01:29

Additives and Fillers in Concrete

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Additives and fillers are integral to enhancing the properties of concrete. Pozzolans and blast-furnace slag are additives or admixtures due to their reactions with calcium hydroxide released during cement hydration. Fillers, which are finely ground and similar in fineness to Portland cement, improve concrete attributes such as workability density, and reduce capillary bleeding or cracking. Some fillers possess hydraulic properties or participate in benign reactions within the cement paste.
The...
70

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相关实验视频

Updated: May 16, 2025

A Uniaxial Compression Experiment with CO2-Bearing Coal Using a Visualized and Constant-Volume Gas-Solid Coupling Test System
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煤炭固体废物作为土壤添加剂的可行性研究.

Nan Guo1,2, Lu Bai3,4, Yingming Yang3,4

  • 1State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, Beijing, 102211, China. 20089952@ceic.com.

Scientific reports
|April 1, 2025
PubMed
概括
此摘要是机器生成的。

利用煤炭,飞灰和煤气化废渣作为土壤添加剂可以将废物转化为有价值的资源. 这些材料的低含量混合物增强了土壤的营养,为采矿区提供了环保的解决方案.

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煤炭集团是一个团伙.煤炭气化废渣是煤炭气化的废渣.飞行灰的飞行灰营养成分的营养素.土壤 土壤土壤.

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Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites
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相关实验视频

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科学领域:

  • 环境科学 环境科学
  • 地质地质地质地质地质地
  • 材料科学 材料科学 材料科学

背景情况:

  • 广泛的煤炭资源开发产生了大量的固体废物,包括煤炭,飞和煤炭气化废渣.
  • 这些废物的不分青红白的处置导致土地占用和生态环境污染.
  • 将废物转化为有价值的资源对于可持续的废物管理至关重要.

研究的目的:

  • 探索使用煤炭,飞灰和煤炭气化废渣作为土壤添加剂来改善采矿区的可行性.
  • 评估这些废物作为环境友好的土壤调节剂的潜力.
  • 为了确定土壤改善的最佳添加剂比率.

主要方法:

  • 使用物理和化学方法对煤,飞灰和煤气化废渣进行实验验证.
  • 在添加混合废物后对土壤特性进行分析.
  • 对土壤营养增强的比较评估.

主要成果:

  • 煤炭,飞灰和煤炭气化废渣被证实是可行的土壤添加剂.
  • 一种特定的混合物 (4%的煤炭,2%的飞灰,1%的煤炭气化渣) 显著改善了土壤营养.
  • 优化的添加剂混合物显示出作为环境友好的土壤基质的潜力.

结论:

  • 基于煤炭的固体废物可以有效地被重新利用为土壤改善剂.
  • 这些废物的低含量应用为采矿土地整治提供了可持续的解决方案.
  • 这种方法有助于废物利用和退化地区的生态恢复.