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，计划对胶凝材料系统中的渗透过程进行研究——冷固化树脂涂层假设是，胶凝材料作为半透膜与涂层在一定的成分、水分传输和传输条件下的作用。首先，该项目包括对树脂系统的研究以及对用作此类涂层基材的水泥材料的研究，然后在与实践相关的不同条件下检查两种成分的复合样本。实验研究伴随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，而这些过程不能简单地通过实验室方法来实现，另一方面，对过程的理解也变得不足。显然，如果模拟无法重现实验结果，申请人将根据由水泥材料制成的复合材料和具有冷固化树脂的涂料的渗透过程的新经验，提供避免在不同条件下起泡的建议。损坏风险应根据精确定义的条件进行实验来确定。两位申请人在项目中引入了不同的专家评估。申请人Schmidt-Döhl 的主要关注点是水泥材料对渗透过程和传输反应模拟的贡献。申请人 Osburg 的主要关注点是树脂系统以及水泥材料和树脂复合材料的实验。