Project Field B: Bond Textile-Matrix
The main focus of the three subprojects of the project group B is the characterization of the textile reinforced concrete. In particular, the complex failure behaviour of the composite will be investigated by experiments in subproject B1 (Jesse) and by theoretical methods in subproject B3 (Häußler-Combe) and subproject B4 (Proske) during the third funding period of the collaborative research centre.
As mentioned, the subproject B1 (Jesse) uses experimental methods for the identification of the load bearing behaviour of textile reinforced concrete. The subproject focuses on describing the stress-strain-relationship under biaxial tension-tension and tension-shear-loadings. Additionally static fatigue will be investigated. Short time tests as well as fatigue tests will be used to determine static fatigue behaviour and uniaxial tensile tests will also be carried out to determine the behaviour of newly developed materials. Therewith an extensive data pool of the behaviour of textile reinforced concrete is provided.
In subproject B3 (Häußler-Combe) micro mechanical models will be developed. These models are aimed at describing the relevant properties of the composite. The models will additionally be numerically processed and the already mentioned data basis of subproject B1 (Jesse) will be used to develop and verify the model. The goal of the model developed is to predict the load bearing behaviour and failure mechanism of textile reinforced concrete. This goal can only be achieved with a close interaction between subproject B3 (Häußler-Combe) and subproject B4 (Proske).
The subproject B4 (Proske) builds a bridge between the experimental subproject B1 (Jesse) and the describing subproject B3 (Häußler-Combe). The data transfer between subproject B1 and subproject B4 is to be increased by intensive statistical data analysis. The statistical data analysis yields to the extension and verification of the models created by subproject B3
The results of the Project Group B in terms of the failure mechanism of the composite, parameters and the importance of the parameters are a major requirement for the systematical optimisation of the composite. Therefore, the yielded results will influence the work of the Project Group A, in particular for subproject A1 (Offermann/Cherif) and A5 (Mäder).