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.

在该项目中，计划对冷固化树脂涂层胶凝材料系统中的渗透过程进行调查。假设是，在某些组成、水分输送和化学物质输送条件下，水泥材料作为半透膜与涂层一起的作用导致损坏。首先，该项目包括对树脂系统的研究以及对用作此类涂料基材的水泥基材料的研究。然后，在不同的条件下，这两个组件的复合材料试样进行了检查，相关的实践。实验研究的陪同下，并支持单个实验的传输-反应模拟。这些模拟用于更好地理解问题的部分过程，而不是简单地通过实验室方法进行访问。另一方面，赤字的理解过程变得明显，如果实验结果不能重现的模拟。申请人将根据水泥基材料和冷固化树脂涂层复合材料渗透过程的新经验，提供避免不同条件下起泡的建议。应在精确界定条件的实验基础上确定增加损害风险的参数。两个申请人在项目中引入了不同的专家评估。申请人Schmidt-Döhl的主要关注点是胶结材料对渗透过程和运输反应模拟的贡献。申请人Osburg的主要关注点是树脂系统和具有胶凝材料和树脂的复合材料的实验。