聚合物成分对回收混凝土性能的影响和使用特殊添加剂提高性能
Kitti Banyai1, Oliver Czoboly1,2, Krisztian Menyhart2
1University of Pecs, Faculty of Engineering and Information Technology, Structural Diagnostics and Analyses Research Team, H-7624 Pécs, Hungary.
Materials (Basel, Switzerland)
|March 13, 2025
概括
回收混凝土聚合物 (RCA) 可以生产符合标准的高强度,耐水混凝土. 这项研究表明,RCA的利用对于可持续建筑是可行的,提供了工业和监管方面的见解.
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:
- 循环经济原则和建筑和拆除废弃物 (CDW) 利用的重要性日益增加.
- 缺乏关于用回收聚合物制成的混凝土防水和固时间的研究.
- 需要了解回收聚合物的特性如何影响混凝土的特性.
研究的目的:
- 研究回收混凝土聚合物 (RCA) 原产地对混凝土性能的影响.
- 评估预浸泡,吸水添加剂和RCA/天然聚合物比率的影响.
- 评估从CDW生产符合标准的混凝土的可行性.
主要方法:
- 在实验室测试压碎的回收混凝土聚合物 (RCA).
- 分析新鲜混凝土和硬化混凝土的性能,其中的RCA含量各不相同.
- 计算有效的水-水泥比率和与压力强度的相关性.
主要成果:
- 有RCA的混凝土符合压力强度和耐水性标准,在某些情况下超过参考混凝土 (例如62.7MPa与51.4MPa).
- 30%RCA混合物的最大水透深度为11毫米,而参考混凝土的最大水透深度为15毫米.
- 含添加剂的混合物达到80分钟的初始设置时间值.
结论:
- 回收混凝土聚合物 (RCA) 可以有效地用于生产高性能混凝土.
- 该研究为没有特殊聚合物处理的工业应用提供了实际见解.
- 这些发现支持对规章制度的潜在修订,以增加建筑中RCA的使用.
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