水泥类型对水泥糊和混凝土与废水的性能和耐久性的影响
Eirini-Chrysanthi Tsardaka1, Eleftherios K Anastasiou1, Aikaterina Karanafti1
1Department of Civil Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
Materials (Basel, Switzerland)
|January 28, 2026
概括
在混凝土生产中回收混凝土卡车洗水是可行的. 将废水与波佐兰水泥 (CEM IV/B 32.5) 使用对混凝土的影响最小.
科学领域:
- 建筑材料科学 建筑材料科学
- 可持续工程 可持续工程
- 混凝土技术 混凝土技术
背景情况:
- 在混凝土生产中的废水回收提供了经济和环境的好处.
- 研究回收混凝土卡车洗水对水泥水化和混凝土性能的影响对于可持续建筑至关重要.
研究的目的:
- 为了比较回收废水对普通波特兰水泥 (CEM I 42.5) 和波佐兰水泥 (CEM IV/B 32.5) 的影响.
- 为了评估用回收废水生产的混凝土的水化行为,设置时间,压力强度和耐用性.
主要方法:
- 使用回收废水和两种水泥类型:CEM I 42.5和CEM IV/B 32.5.5制备了水泥糊和混凝土.
- 测试包括水化热量测量,设置时间,压力强度的发展,吸收,含量和碳化深度分析.
主要成果:
- 回收废水加快了CEM I 42.5的水分和稍微增加了早期的压力强度.
- 与废水混合的CEM IV/B 32.5混凝土显示毛细血管空隙增加,28天压力强度降低7%,吸收率增加20%.
- 废水使用降低了表面含量,但碳化深度增加了1-2毫米;然而,碳化后的压力强度有所改善.
结论:
- 在使用回收废水时,水泥类型对混凝土性能有很大影响.
- 在混凝土生产中,回收废水可以完全用波佐兰式水泥 (CEM IV/B 32.5) 代替淡水,但对机械性能和耐用性仅有轻微影响.
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