A contribution to the understanding of the fundamental mechanism leading to the retardation of cement hydration caused by polymer particles.

聚合物颗粒对水泥水化有影响。建议项目的目的是评估，在文献中提出的模型，解释聚合物颗粒对水泥水化的延迟影响，是有效的。讨论了聚合物颗粒在水泥表面上的吸附或聚合物颗粒与孔隙溶液中离子（特别是Ca-离子）的相互作用。在建议的项目中，将进行一项系统的研究，以评估哪种现象是最常见的，以解释聚合物颗粒对水泥水化的阻滞。将采用最先进的方法来实现这一目标。特别是使用最新公布的数据库计算饱和指数将有助于更深入地了解聚合物颗粒存在下水泥水化的阻滞作用。

Polymer particles have an influence on cement hydration. The aim of the suggested project is to evaluate, which of the proposed models in literature, explaining the retarding influence of polymer particles on cement hydration, is valid. Discussed are either the adsorption of polymer particles on cement surfaces or the interaction of the particles with ions on pore solution (especially Ca-ions). In the suggested project a systematic study will be conducted allowing to evaluate which phenomenon is the most thinkable in order to explain the retardation of cement hydration by polymer particles. State-of-the-art methods will be used in order to achieve this aim. Especially calculation of saturation indices using the newest published databased will help getting a deeper understanding of the retardation of cement hydration in the presence of polymer particles.