使用河流污泥对控制低强度材料 (CLSM) 的混合比例和机械性能进行研究
Jinyan Zhu1, Lei Li2, Ziyi Huang1
1School of Earth Sciences and Engineering, Hohai University, Nanjing, 211100, China.
Scientific reports
|November 17, 2025
概括
这项研究探讨使用疏的河流污泥来制造受控制的低强度材料 (CLSM). 为不同的工程应用确定了石灰与土壤 (L/S) 和水与固体 (W/S) 的最佳混合比率,以提高材料性能.
科学领域:
- 地质技术工程 地质技术工程
- 可持续的建筑材料 可持续的建筑材料
- 废弃物价值化 废弃物价值化 废弃物价值化
背景情况:
- 疏的河流污泥对处置来说是一个很大的挑战.
- 在建筑材料中利用污泥提供了一个可持续的解决方案.
- 控制低强度材料 (CLSM) 需要特定的性能特征.
研究的目的:
- 调查使用疏河污泥作为CLSM的主要组成部分的可行性.
- 分析混合物比例 (W/S,L/S) 和补充材料 (飞,渣) 对CLSM特性的影响.
- 为了确定特定工程应用的最佳混合设计,如道路地下层和管道沟回填.
主要方法:
- 在实验室中准备CLSM样品,混合比例不同.
- 测试固化材料的流动性和不受限制的压力强度 (UCS).
- 评估补充材料,如飞灰和渣的影响.
主要成果:
- 随着水与固体 (W/S) 和石灰与土壤 (L/S) 的比率提高,CLSM的流动性会增加.
- 不受限制的压力强度 (UCS) 随着W/S比较高而下降,随着L/S比较高而增加.
- 添加渣和飞灰可以提高CLSM的性能,而渣显示出优异的强化效果.
结论:
- 最佳的CLSM混合设计取决于特定的工程要求.
- 对于道路地下层填充 (400-800 kPa UCS),L/S=0.20和W/S=0.72是最优的.
- 对于管道沟回填 (200-400 kPa UCS),L/S=0.15和W/S=0.80对于高流动性是理想的.
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