可持续基础设施:回收的混凝土聚合物用于循环路径
Piotr Konca1, Iwona Szer1, Jacek Szer1
1Department of Building Materials Physics and Sustainable Design, Lodz University of Technology, Av. Politechniki 6, 90-924 Lodz, Poland.
Materials (Basel, Switzerland)
|January 11, 2025
概括
回收混凝土聚合物 (RCAs) 可以用于中欧的自行车道基结构. 适当的水泥等级和水/水泥比率对于满足强度和耐久性要求至关重要.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 可持续建筑 可持续建筑
背景情况:
- 回收混凝土聚合物 (RCAs) 越来越多地用于建筑.
- 基于原产地和加工,RCA的特性有很大差异.
- 之前的研究并没有专门针对中欧自行车道基层结构的RCAs.
研究的目的:
- 评估来自不同来源的RCAs适合于中欧的自行车道基层结构层.
- 使用这些RCAs来确定混凝土的机械和耐久性质.
- 为在这个特定应用中适当使用RCAs制定准则.
主要方法:
- 机场,道路大桥和建筑物拆除场所采购了RCAs.
- 总体测试是按照欧洲标准进行的.
- 使用RCAs准备了混凝土混合物,并评估了它们的压力强度,密度,吸水能力和抗能力.
- 研究了特定的水泥类 (CEM II B/V 32.5) 和水/水泥 (W/C) 比率.
主要成果:
- RCA混凝土的28天压力强度在5.9至17.3MPa之间.
- 抗比率始终接近1.0.0. 这一点.
- 确定了符合EN 12390-3 (C8/10类) 和D-04.05.01v02标准的特定W/C比率.
- 具体参数表明RCA应用的潜力与适当的混合设计.
结论:
- 来自不同来源的RCAs对于中欧的自行车道基层结构层是可行的.
- 仔细选择水泥类型和W / C比率对于实现所需的性能至关重要.
- 测试RCA属性是关键的,因为固有的可变性,以确保质量和合规性.
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