准备和应用导电混凝土从铁尾矿到工程材料课程教学改革的导电混凝土
Ping Jiang1, Xingchen Hu1, Wei Wang1
1Shaoxing Key Laboratory of Interaction Between Soft Soil Foundation and Building Structure, School of Civil Engineering, Shaoxing University, Shaoxing, 312000, China.
Scientific reports
|October 16, 2025
概括
这项研究使用矿山废弃物铁尾开发了导电混凝土. 优化的比率产生高强度和优良的导电性,促进可持续的建筑材料和创新的工程教育.
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.
- 环境工程 环境工程
背景情况:
- 铁尾矿是一个重要的矿业固体废物挑战.
- 开发智能建筑材料对于现代基础设施至关重要.
- 工业副产品的可持续利用符合绿色工程原则.
研究的目的:
- 调查关键参数对碳纤维钢铁尾部导电混凝土 (CF-ITCC) 性能的影响.
- 为了优化CF-ITCC的组成,以获得理想的密度,压力强度和电阻力.
- 探索铁尾矿作为混凝土技术中的可持续资源的潜力.
主要方法:
- 采用了四个因素,四个级别的直角测试设计.
- 研究了水结合剂比率,二氧化烟雾含量,沙结合剂比率和碳纤维含量的影响.
- 评估了开发的混凝土的密度,压力强度和电阻.
主要成果:
- 压力强度与密度 (R2=0.87) 呈现出强烈的正线性相关性,密度≥2300 kg/m3的强度超过30 MPa.
- 超过0.25%体积的碳纤维含量导致了极好的导电性,电阻率低至616 Ω·cm.
- 沙结合剂比率显著影响密度和强度,而碳纤维含量主要控制电阻.
结论:
- 优化的CF-ITCC组合实现了低密度,高强度和优良导电性的平衡,证明了有效的铁尾矿利用.
- 微结构分析显示,C-S-H凝和氧化有助于强度,而碳纤维和铁尾矿形成导电网络.
- 开发的材料和跨学科的实验系统为固体废物资源利用,智能建筑和工程教育改革提供了显著的价值.
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