含有石残留的青混合物作为细块的部分替代品:技术,经济和环境评估
Lara Pereira Tavares Mendes1, Osires de Medeiros Melo Neto2, Leonardo Rodrigues Guedes1
1Department of Civil Engineering, Federal University of Campina Grande, Aprígio Veloso 882, Campina Grande, PB, 58428-830, Brazil.
Environmental science and pollution research international
|August 16, 2025
概括
石残留物 (BR) 可以取代青混合物中的细聚合物,提高机械性能并减少采矿废物. 这种可持续的解决方案提高了刚性和耐用性,同时降低了处置成本.
科学领域:
- 材料科学与工程 材料科学与工程
- 环境工程 环境工程
- 地质技术工程 地质技术工程
背景情况:
- 废物产生是工业过程固有的,需要有效的管理策略.
- 矿山副产品石残留物 (BR) 构成环境风险,但具有重复使用的潜力.
- 工业副产品的可持续利用对于环境和经济效益至关重要.
研究的目的:
- 评估石残留物 (BR) 在青混合物中作为部分细聚合物的替代品的加入.
- 评估BR改性青的机械性能,环境影响和经济可行性.
- 研究BR在长期热老化之前和之后对青性能的影响.
主要方法:
- BR和聚合物 (物理,化学,环境) 的表征.
- 青混合物的生产和机械测试,其BR含量不同 (5%,10%,15%).
- 评估性能指标,包括强度,耐久性,模量,疲劳和永久变形阻力,以及漏试验和成本分析.
主要成果:
- 在老化之前和老化后,BR的加入提高了青的刚性和抵抗永久变形和疲劳的能力.
- 由于BR中的可溶性金属,观察到增加的湿度易感性,需要缓解.
- 漂水试验表明,溶性金属的流动性降低,这表明残留物有封装潜力.
- 经济分析显示,矿业公司的储存和处置成本降低了.
结论:
- 石残留物可以可持续地纳入青混合物,增强机械性能.
- 解决湿度敏感性是成功地在青中利用BR的关键.
- 在青中使用BR为采矿业提供了可行的经济和环境解决方案.
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