Measurement of graphene dispersion in cementitious systems

水泥体系中石墨烯分散度的测量

• 批准号: 10039335
• 金额: $ 0.99万
• 依托单位: FIRST GRAPHENE (UK) LIMITED
• 依托单位国家: 英国
• 项目类别: Collaborative R&D
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=10039335
• 关键词: Measurement; graphene; dispersion; cementitious; systems

**Why Graphene in Cement?**Graphene technology is a key stepping stone in de-carbonising the cement industry. Strength improvements, water resistance, and chemical resistance can be imparted on concrete by using a graphene additive. To achieve these benefits; graphene must be added and adequately mixed during the concrete batching process. These improvements can result in the use of lower clinker factor cements or reduction of cement usage in designed concrete. Reducing cement usage can reduce embodied CO2 of concrete products.**Measurement Issue**Mechanical and chemical benefits of graphene are only realised when the graphene is thoroughly dispersed. Measurement of graphene dispersion in concrete is not currently possible. This project will determine if differences in graphene dispersion can be detected in cured cement mortar samples using fast, non-destructive techniques.**Project Activity Brief**Mortar samples containing no graphene, well dispersed graphene, and poorly dispersed graphene will be provided to the National Physical Laboratory. Once there, samples will be probed using terahertz, microwave and waveguide techniques in an effort to measure dispersion differences between them. Each of these techniques will be evaluated for the ability to distinguish poorly dispersed graphene additives and well-dispersed additives. By identifying a rapid, non-destructive method to characterise this key material property, product development cycles can be shorted, and greater assurance provided to downstream users. Ultimately it offers a route to accelerate the adoption of this material, and support the drive to a Net Zero carbon economy.

** 为什么石墨烯在水泥中？**石墨烯技术是水泥行业脱碳的关键垫脚石。通过使用石墨烯添加剂，可以在混凝土上赋予强度改进、耐水性和耐化学性。为了实现这些好处，必须在混凝土浇注过程中添加石墨烯并充分混合。这些改进可导致使用较低熟料系数的水泥或减少设计混凝土中的水泥用量。减少水泥用量可以减少混凝土产品的隐含二氧化碳。**测量问题 ** 石墨烯的机械和化学优势只有在石墨烯完全分散时才能实现。石墨烯在混凝土中的分散的测量目前是不可能的。该项目将确定是否可以使用快速，非破坏性技术检测固化水泥砂浆样品中石墨烯分散的差异。** 将向国家物理实验室提供不含石墨烯、分散良好的石墨烯和分散不良的石墨烯的砂浆样品。一旦到达那里，将使用太赫兹，微波和波导技术探测样品，以测量它们之间的色散差异。将评估这些技术中的每一种区分分散不良的石墨烯添加剂和分散良好的添加剂的能力。通过确定一种快速、非破坏性的方法来验证这一关键材料特性，可以缩短产品开发周期，并为下游用户提供更大的保证。最终，它提供了一条加速采用这种材料的途径，并支持实现净零碳经济。