Tailored yield stress for 3D printing using Low clinker cement - Low-Clinker-Cement-3D-Printing (LCC3D)

使用低熟料水泥进行 3D 打印的定制屈服应力 - 低熟料水泥 3D 打印 (LCC3D)

• 批准号: 386869775
• 负责人: Professor Dr. Jürgen Neubauer
• 金额: --
• 依托单位: Lehrstuhl für Mineralogie
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/386869775?language=en
• 关键词: Tailored; yield; stress; 3D; printing

Two substantial goals are pursued in this proposal.Initially the highly time resolved (ca. 10 min) evolution of the relevant rheology determining parameters during the early cement hydration will be traced and evaluated. Here the evolution of the specific surface area of the clinker phases, the evolution of the morphology and the amount of the forming hydrate phases as well as the availability and amount of the residual unbound and rheology active water fraction play a significant role. These parameters and others will be traced and quantified by a combination of different physical, chemical and rheological analytic methods. Important to highlight that most of the proposed analytic methods provide overlapping information, allowing a cross validation in order to confirm the consistency of the measured results.In the second part the influence of different rheology active additives on the above mentioned parameters will be evaluated. Thereby important information on the effect of building additives and the fundamental working mechanisms of the superimposition of cement hydration and the development of rheological properties over time are expected. These information are compulsory for further in deep understanding of the rheology in fresh concretes.

在这个建议中有两个实质性的目标。10分钟）的变化。在这里，熟料相的比表面积的变化，形成水合物相的形态和数量的演变以及残余未结合和流变活性水部分的可用性和数量起着重要作用。这些参数和其他参数将被追踪并通过不同的物理、化学和流变学分析方法的组合进行量化。重要的是要强调，大多数拟议的分析方法提供了重叠的信息，在第二部分中，将评估不同的流变活性添加剂对上述参数的影响，从而获得关于建筑效果的重要信息。水泥水化叠加的基本工作机理和流变性能随时间的发展，这些信息是进一步深入了解新拌混凝土流变性的必要条件。