废混凝土粉基人工精细聚合物的特性及其在混凝土中的应用
Wei Xu1, Liang Zhan1, Yang Lei1
1China Construction Fifth Engineering Bureau Co., Ltd., Changsha 410004, China.
Materials (Basel, Switzerland)
|February 27, 2026
概括
这项研究开发了废混凝土粉 (WCP) 人工细聚合物 (WAFA),以解决建筑垃圾和自然沙子短缺问题. WAFA显示了可持续混凝土的前景,实现了C30-C50的目标优势.
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.
- 可持续建筑 可持续建筑
背景情况:
- 废混凝土粉 (WCP) 的积累给环境带来了挑战.
- 由于天然细聚合物 (NFA) 的短缺,需要替代材料.
- 由于WCP的利用潜力有限,因此需要创新的解决方案.
研究的目的:
- 使用WCP.开发一种可持续的人工细聚合物 (WAFA).
- 评估WAFA的物理,机械和微观结构性质.
- 评估WAFA作为100%取代NFA的具体性能.
主要方法:
- 使用WCP,飞灰 (FA),磨砂颗粒高炉渣 (GGBFS),普通波特兰水泥 (OPC) 和硫酸盐水泥 (SAC) 的冷结合工艺.
- 对WAFA的物理,机械和微观结构特征进行系统分析.
- 评估混凝土,包括WAFA,取代NFA在100%的体积.
主要成果:
- WAFA表现出球形形态,并在分级后满足Zone II沙子要求.
- 增加的水泥含量和WCP反应性增强单颗粒压力强度 (SPCS) 并促进C-S-H凝和乙化 (AFt) 的形成.
- WAFA混凝土表现出更好的可加工性,可以达到从C30到C50的目标强度等级.
结论:
- WAFA提供了一种可持续的解决方案,用于高价值的建筑垃圾利用.
- WAFA有效地减少了在混凝土应用中对天然沙的需求.
- 优化的WAFA混凝土混合物为结构性使用提供了有利的机械性能.
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