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

在这个建议中有两个实质性的目标。10分钟）的演变过程中的早期水泥水化的相关流变学确定参数将被跟踪和评估。在此，熟料相的比表面积的演变、形成的水合物相的形态和量的演变以及残余的未结合和流变活性水部分的可用性和量起着重要作用。这些参数和其他参数将通过不同的物理、化学和流变分析方法的组合来追踪和量化。重要的是要强调，大多数建议的分析方法提供重叠的信息，允许交叉验证，以确认测量结果的一致性。在第二部分中，将评估不同流变活性添加剂对上述参数的影响。因此，建筑添加剂的效果和水泥水化的叠加和流变性能随时间的发展的基本工作机制的重要信息。这些信息对于进一步深入理解新拌混凝土的流变性是必不可少的。

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.