废玻璃粉的协同利用用于耐火和低活性混凝土
Yellanki Deepti1, Sanjay Kumar1, Atrayee Bandyopadhyay2
1Department of Civil Engineering, National Institute of Technology Jamshedpur, Jharkhand, 831014, India.
Scientific reports
|January 10, 2026
概括
这项研究引入废玻璃粉作为活性混凝土的可持续前体,增强耐火性和机械强度. 优化的混合物在高温下表现出卓越的性能,为普通波特兰水泥提供了更绿色的替代品.
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:
- 普通波特兰水泥 (OPC) 混凝土在高温下表现不佳,碳足迹很大.
- 迫切需要可持续和耐火的混凝土替代品.
研究的目的:
- 为了评估一个活性混凝土 (AAC) 系统使用飞灰 (FA) 和地面颗粒高炉渣 (GGBFS) 和废玻璃粉 (WGP) 作为前体替代品.
- 为了研究WGP对AAC机械性能和高达1000°C的热稳定性的影响.
- 为了确定最佳的WGP替换水平和活性剂度.
主要方法:
- 在AAC配方中,系统地用25%的WGP取代FA或GGBFS.
- 有不同度的氧化 (NaOH) (8-10%).
- 在高温暴露后测试剩余的机械性能 (压力强度,应力拉伸,柔性,能量吸收).
- 使用X射线衍射 (XRD),扫描电子显微镜 (SEM) 和能量分散光谱 (EDS) 的微结构分析.
主要成果:
- 用WGP (Mix M3C5) 取代25%的飞灰,可以获得最高的环境压力强度 (68.61 MPa) 与较低的需求 (8% NaOH).
- 在1000°C时,优化的WGP混合物 (M3C5) 保持了其强度的40.3% (27.66 MPa),超过了基线混合物 (M1Na10).
- 微结构分析揭示了WGP修改的AAC中更密集,富含的凝矩阵,减轻了热微裂变.
结论:
- 废玻璃粉是一种有效的协同前体,用于生产高性能,耐火的AAC.
- 加入WGP减少了的需求,并提高了热力学稳定性.
- 这种方法促进废物利用,支持低碳建筑环境,并与循环经济原则保持一致.
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