The aim of this research project is the research and development of concrete products based on alkali-activated binders in an automated hermetic process. The research work is aimed at the factory production of prototypes and testing for durability, resistance of the surface also from the aesthetic point of view. The production of the geopolymer concrete will use granulated blast furnace slag and the recipes will be optimized in the course of the project. Here, the durability properties are in the foreground. By varying and combining the exciters (potassium, sodium, lithium hydroxide and water glass) and their concentrations, the strength and strength development (high early strengths) can be improved. Since the production process is to be adapted within the scope of the plant possibilities, the development of pre-treatment formulations, which achieve a certain strength particularly quickly and precisely, is also planned or to be tested as a sub-goal. The development and optimization of durable facing layers with regard to abrasion resistance and reduced efflorescence is the desired goal. However, it is also necessary to examine whether the use of geopolymers in concrete products would also be suitable for industrial floors, especially for more demanding requirements in terms of mechanical strength and thermal resistance, as well as resistance to acid attack. Since the fresh concrete of geopolymers has a high pH value, special work safety measures must be taken even in completely automated production processes. In order to ensure the safety of the personnel and the quality of the properties, the work processes in the plant are to be analyzed with the participation of the Department of Industrial and Organizational Psychology (University of Kassel) and an optimized production concept is to be drawn up with special consideration of the human being. This work is based on the LOEWE priority "Safer Materials".

This project (HA-Project-No.: 491/16-03) is funded by Hessen Modell Projekte with funds from LOEWE - Landes-Offensive zur Entwicklung Wissenschaftlich-ökonomischer Exzellenz, Förderlinie 3: KMU-Verbundvorhaben.