在含有烟的高性能混凝土中使用聚合物的有效性
Alya Harichane1, Nadhir Toubal Seghir1, Paweł Niewiadomski2
1Institute of Science, University Center of Tipaza, Tipaza 42000, Algeria.
Polymers
|September 28, 2023
概括
聚乙烯超塑剂 (PCE) 和烟 (SF) 增强了混凝土,但存在兼容性问题. 在高性能混凝土 (HPC) 中成功集成SF的关键是PCE碳酸密度.
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.
- 混凝土技术 混凝土技术
背景情况:
- 聚碳酸超塑化剂 (PCE) 和烟 (SF) 对高性能混凝土 (HPC) 至关重要,改善了质和机械性能.
- 通过对水泥颗粒吸附,PCE增强了可加工性,而SF则有助于密集的微结构和高强度.
- 某些PCE和SF之间的不兼容性可能会导致新鲜混凝土的显著滑坡损失和较差的质性能.
研究的目的:
- 调查三种具有不同分子架构的PCE类型对HPC的风湿和机械行为的影响.
- 为了确定不同PCE与10%的烟 (SF) 作为HPC配方中的部分水泥替代品的兼容性.
- 确定影响其与二氧化烟雾相互作用的特定PCE特征.
主要方法:
- 高性能混凝土 (HPC) 混合物的配方,其中包含10%的二氧化 (SF).
- 包括三种不同类型的聚碳酸乙超塑化剂 (PCE),具有不同的分子架构.
- 开发的HPC混合物的新鲜状态属性 (质,可加工性) 和硬化状态属性 (机械参数) 的评估.
主要成果:
- 该研究观察到测试的PCE和烟 (SF) 之间的不同程度的兼容性.
- PCEs的特定分子架构影响了它们在SF存在时的吸附行为和分散效率.
- 发现PCE的碳酸盐密度与其与二氧化烟雾的兼容性之间存在直接相关性,影响了学的稳定性.
结论:
- 聚碳酸超塑剂 (PCE) 的碳酸密度是决定它们与二氧化 (SF) 的兼容性的关键因素.
- 根据其分子结构,特别是碳酸密度,仔细选择PCE,对于优化含有二氧化烟的高性能混凝土 (HPC) 的性能至关重要.
- 了解这些相互作用可以减轻滑坡损失,并在SF修改的HPC中实现所需的质和机械性能.
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