来自建筑和拆除废弃物的纳米复合材料用于水泥:X射线衍射,光谱和机械研究
Roxana Rada1, Daniela Lucia Manea1, Andrzej Nowakowski2
1Department of Civil Engineering and Management, Faculty of Civil Engineering, Technical University of Cluj-Napoca, 400020 Cluj-Napoca, Romania.
Nanomaterials (Basel, Switzerland)
|May 24, 2024
概括
这项研究探讨了使用玻璃和建筑垃圾等废物材料来制造石灰石-酸盐复合材料. 将这些复合材料融入水泥中可以显著提高其压力强度和稳定性.
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:
- 水泥生产有助于环境问题和填埋场负担.
- 废物,包括玻璃和建筑垃圾,具有作为原材料替代品的潜力.
研究的目的:
- 从各种废物中合成和表征石灰石-酸盐复合材料.
- 评估这些复合材料作为波特兰水泥的部分替代品的性能.
- 调查对水泥糊的性能,包括机械强度和稳定性的影响.
主要方法:
- 使用玻璃废弃物,石灰,,自气混凝土 (ACC),砂或石膏废弃物合成石灰石-酸盐复合材料.
- 复合材料结构和机械性能的表征.
- 将2.5%的复合材料纳入基于水泥的材料,并评估它们对C-S-H网络形成的影响.
- 测试复合材料修改过期水泥的初始裂变应变和应力,抗拉强度和压力强度.
主要成果:
- 使用ACC和合成的复合材料显示,与石灰,砂和石膏相比,CaCO3结晶体的平均尺寸更大.
- 添加2.5%的复合材料促进了水泥中的C-S-H网络形成,增强了强度和稳定性.
- 复合材料过期的水泥样本显示压力强度值在11.8至15.7MPa之间.
- 与过期的水泥基质相比,压力强度增加了22.9%,达到63.54%.
结论:
- 废物可以有效地用于生产用于水泥生产的石灰石-酸盐复合材料.
- 结合这些复合材料可以增强水泥材料的机械性能,特别是压力强度.
- 这种方法为废物管理提供了可持续的解决方案,并减少了水泥制造对环境的影响.
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