光显微镜检查PCE超塑性剂在烧焦粘土混合水泥中的吸附
D Kosenko1, A Wetzel1, B Middendorf1
1Department of Structural Materials and Construction Chemistry, University of Kassel, Kassel, Germany.
Journal of microscopy
|April 1, 2024
概括
烧焦 (CC) 用于替代混凝土中的水泥,但有效的添加剂,如聚碳酸 (PCE),是有限的. 研究表明,不同的PCE类型对CC的吸附方式不同,这会影响混凝土的性能.
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:
- 全球减少二氧化碳排放的努力推动了土 (CC) 作为混凝土中部分水泥替代品的使用.
- 虽然CC水化已被理解,但像聚碳酸 (PCE) 等添加剂的有效性和机制尚未完全阐明.
- 对PCE吸附的有限理解阻碍了高性能CC混合水泥的开发.
研究的目的:
- 为了研究不同聚碳酸乙烯 (PCE) 超塑性剂在烧焦粘土 (CC) 混合水泥系统中的吸附机制.
- 为了将PCE吸附行为与CC混凝土混凝土的性能相关联.
主要方法:
- 使用光和扫描电子显微镜的组合进行空间分辨率研究.
- 在CC混合粘合剂系统中比较了两种不同的PCE超塑性剂.
- 监测了流量测试和设置行为,以与吸附结果相关联.
主要成果:
- 调查显示,在CC混合系统中,不同类型的PCE具有不同的首选吸附点.
- 一种特定的PCE类型与其他类型相比,对CC和其他混合成分的吸附率更高.
- 吸附模式与观察到的流量测试结果和设置时间成功相关联.
结论:
- 这项研究阐明了CC混合水泥系统中PCE超塑剂的差异吸附行为.
- 了解这些吸附机制对于优化可持续混凝土配方性能至关重要.
- 根据吸附特性量身定制PCE选择可以提高CC混凝土混凝土的可加工性和结性.
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