优化比例和微观机制研究的泥砂准备的铜尾作为精细聚合物的优化
Haizhou Li1,2, Lu Zhang2,3, Jianping Liu3
1School of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255000, China.
Materials (Basel, Switzerland)
|June 13, 2025
概括
这项研究优化了使用铜尾矿的水泥砂,提高了强度和耐用性. 它采用了Box-Behnken设计和碎形理论,用于可持续的建筑材料.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 环境科学 环境科学
背景情况:
- 传统的河流沙子使用对环境产生了重大影响.
- 铜尾矿呈现出未充分利用的资源潜力.
- 需要可持续的建筑材料来解决废物和环境问题.
研究的目的:
- 为了优化水泥砂的性能,使用铜尾矿砂.
- 通过微观结构分析来研究性能提升的机制.
- 为工业固体废物利用提供一种新的多尺度方法.
主要方法:
- 盒式设计 (BBD) 用于实验优化.
- 微结构性特征的碎形维度分析.
- 评估宏观性质 (压缩/弹性强度,抗硫酸盐攻击性).
主要成果:
- 确定了最佳参数:水-水泥比率为0.43,替换比率为20%,粘合剂-砂比率为0.35.
- 在28天内达到61.88 MPa (压力) 和7.14 MPa (柔性) 的强度,分别提高12.3%和9.8%.
- 证明了优异的硫酸盐抗击能力 (0.74%的质量损失) 和改善的孔隙结构均性 (碎形维度D = 2.31).
结论:
- 铜尾矿砂有效提高水泥砂的性能.
- 微聚合物填充和pozzolanic反应的协同效应有助于改善性能.
- 开发的多尺度方法支持在建筑业中高价值利用工业固体废物.
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