在绿色粘合剂系统中利用来自CDW的回收石膏
Roumiana Zaharieva1, Borislav Simonov1
1Centre of Competencies "Clean&Circle", University of Architecture, Civil Engineering and Geodesy, 1 Hristo Smirnenski Blvd., 1046 Sofia, Bulgaria.
Materials (Basel, Switzerland)
|November 13, 2025
概括
从废旧的石膏板中回收的石膏 (RG) 可以为建筑制造环保粘合剂. 与天然热带石混合的粘合剂具有高强度和耐水性,适合作为水泥替代品.
科学领域:
- 建筑材料科学 建筑材料科学
- 废弃物管理和回收利用
- 可持续建筑 可持续建筑
背景情况:
- 建筑和拆除废物 (CDW) 是一个重大的环境挑战.
- 石膏板的石膏废物经常被填埋,代表了一个错过的资源.
- 循环经济需要在CDW中找到价值,包括石膏.
研究的目的:
- 调查在混合绿色粘合剂中使用回收石膏 (RG) 的可行性.
- 设计和评估石膏-水泥-pozzolanic结合剂与天然热带石和回收粉.
- 评估这些新型粘合剂的性能和潜在的建筑应用.
主要方法:
- 创建了四种石膏水泥-波佐兰粘合剂配方,其中波佐兰添加剂的比例各不相同.
- 采用X射线衍射 (XRD) 和差异热分析/热重力测量分析 (DTA/TG) 来进行矿物学分析.
- 标准化测试评估了粘合剂糊的新鲜和硬化性能.
主要成果:
- 回收石膏 (RG) 可以在超过40%的含量中加入到混合粘合剂中,从而产生快速定位的特性.
- 使用天然热带石的粘合剂表现出优越的压力强度 (在90天内高达30MPa) 和耐水性.
- 使用回收粉的粘合剂适用于低湿度的应用,如石膏和体.
结论:
- 回收石膏是生产可持续,混合建筑粘合剂的可行组成部分.
- 增强天然石结合剂为传统水泥材料提供了一个有前途的替代品.
- 回收粉粘合剂在特定的建筑环境中具有利基应用,促进废物利用.
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