Osmotic processes in the system cementitious material - coating with cold-curing resin

胶凝材料系统中的渗透过程 - 冷固化树脂涂层

• 批准号: 471260929
• 负责人: Professorin Dr.-Ing. Andrea Osburg
• 金额: --
• 依托单位: Lehrstuhl Bauchemie und Polymere Werkstoffe
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/471260929?language=en
• 关键词: Osmotic; processes; system; cementitious; material

In the project investigations on osmotic processes in the system cementitious material – coating with cold-curing resin are planned. Hypothesis is, that the action of the cementitious material as a semipermeable membrane together with the coating under certain conditions of composition, moisture transport and transport of chemical species leads to damages. At first the project covers investigations on resin systems as well as investigations on cementitious materials used as substrate for such coatings. Afterwards composite specimens of both components are examined under different conditions, relevant for practise. The experimental investigations are accompanied and supported by transport-reaction simulations of single experiments. These simulations are used to better understand part processes of the problem, that are not simply accessible by laboratory methods. On the other hand deficits in the understanding of the processes become obviously, if experimental results cannot be reproduced by the simulations. The applicants will provide recommendations to avoid blistering under different conditions, based on the new experiences on osmotic processes in composites made of cementitious materials and coatings with cold-curing resin. Parametres increasing the damage risk should be identified on the basis of experiments with precisely defined conditions. Both applicants introduce different expert's assessment in the project. The main focus of the applicant Schmidt-Döhl is the contribution of cementitious materials to osmotic processes and the transport-reaction simulation. The main focus of the applicant Osburg are the resin systems and the experiments with the composite species with cementitious material and resin.

在系统渗透过程的项目投资中，固定材料的渗透过程 - 计划在冷粘树脂上涂层。假设是，在成分，水分传输和化学物种的运输条件下，水泥材料作为半透明膜的作用以及涂层会导致损害。首先，该项目涵盖了对树脂系统的投资，以及用于此类涂料底物的水泥材料的投资。之后，在不同条件下检查了两个组件的复合样本，与实践有关。通过单个实验的传输反应模拟来完成和支持实验研究。这些模拟用于更好地理解问题的部分过程，这些过程不仅可以通过实验室方法访问。另一方面，如果模拟无法再现实验结果，则显然会在理解过程中定义。申请人将根据不同条件下的渗透过程中的新经验，以避免在不同条件下起泡，以避免起泡，这是由胶合材料和涂料和冷粘树脂制成的组成过程中的渗透过程。应根据精确定义条件的实验确定增加损害风险的参数。这两种应用都介绍了该项目中不同专家的评估。申请人Schmidt-Döhl的主要重点是胶结材料对渗透过程和传输反应模拟的贡献。申请人奥斯堡的主要重点是树脂系统和具有胶合材料和树脂的复合物种的实验。