来自多变体固体废物的低环境负荷泥固化剂的制备和反应机制
1State Key Laboratory of Solid Waste Reuse for Building Materials, Beijing Building Materials Academy of Sciences Research, Beijing, 100041, China.
Journal of environmental management
|November 2, 2023
概括
这项研究探讨了使用工业固体废物作为泥固化 (SM) 的固化剂 (SA). 添加3.0%的酸盐 (Na2SiO3) 产生了最高的压力强度,表明结构更紧.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 可持续建筑 可持续建筑
背景情况:
- 工业固体废物面临着处置方面的挑战.
- 水泥生产对环境产生重大影响.
- 需要可持续的建筑材料替代品.
研究的目的:
- 调查工业固体废物作为固化剂 (SA) 的使用.
- 为了评估使用SA与各种激活剂的泥固化 (SM) 的性能.
- 了解SA受不同激活剂影响的固化机制.
主要方法:
- 来自五种工业固体废物的复合凝固剂 (SA).
- 使用SA和不同的激活剂进行泥固化 (SM) 实验.
- 分析SA和SM样本的压力强度.
- 进行显微镜测试以检查固化机制.
主要成果:
- 最佳添加3.0%的酸盐 (Na2SiO3) 导致SA和SM标本在1天和28天的最高压力强度.
- 显微镜分析显示,SA具有3.0%Na2SiO3.3%的高水活性.
- 集群凝在水化产品中的连续分布有助于更紧的整体结构.
结论:
- 工业固体废物可以有效地用于制备固化剂.
- 酸作为有效的激活剂,增强固化泥的性能.
- 开发的材料为建筑提供了可持续的替代品,减少了对水泥的依赖.
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