快激活水泥炉粉尘渣粘合剂糊的机械行为和微观结构评估
Minhui Hu1, Tianwen Dong1, Zhenglong Cui1
1School of Civil Engineering, Liaoning Technical University, Fuxin 123000, China.
Materials (Basel, Switzerland)
|March 28, 2024
概括
这项研究开发了使用炉粉尘 (CKD) 和在环境温度下由火激活的渣的新型水泥粘合剂. 最佳混合物实现了28天的24.6 MPa的不受限制的压力强度,证明了CKD.
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:
- 水泥粉 (CKD) 是一种生产水泥的副产品,利用率有限,需要高温激活.
- 从工业副产品中开发可持续的粘合剂对于减少环境影响和资源消耗至关重要.
研究的目的:
- 在环境条件下研究使用CKD和活激活的渣制备新型水泥粘合剂.
- 分析和CKD含量对粘合剂可加工性,机械性质和微观结构的影响.
- 评估CKD作为可持续粘合材料的主要组成部分的潜力.
主要方法:
- 在环境温度下通过活激活的CKD泥渣糊的制备.
- 评估可操作性,包括流动性和设置时间.
- 宏观机械性质的评估,特别是28天的未受限制的压力强度 (UCS).
- 使用扫描电子显微镜与能量分散X射线 (SEM-EDX) 的微结构分析.
主要成果:
- 添加CKD和火促进了Ca2+,Si4+和Al3+离子的沉,促进了氨基酸盐水合物 (C-(A) -S-H) 凝的形成.
- 最佳的粘合剂成分 (10%生,60%CKD) 在28天后产生了最高的UCS24.6 MPa.
- 在SEM-EDX分析中,C-A-S-H凝的Ca/Si比率降至最低,表明密度更高的微观结构和更好的结合能力.
结论:
- 快激活有效地提高了CKD-slag结合剂在环境温度下的反应性.
- 高比例的CKD可用于新型粘合材料,提供可持续的替代品.
- 开发的CKD渣粘合剂显示出潜在应用的有希望的机械性能和微观结构特性.
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