Computational Modelling of concrete
Prof. Waldmann intends to further develop the fundamental research activities in the field of Computational modelling for concrete which is based on the development of own numerical models in MATLAB using the Phase Field Method enabling the simultaneous study of the chemical, mechanical and thermal material behaviour of concrete. This is especially important as the cracking behaviour of concrete structures might already start during hardening due to the hydration process in the framework of given environmental and geometrical boundary conditions. The developed model based on the Phase Field Method is able to consider the particularity of this heterogeneous material with its complex micro-structure and interfacial effects so that it can also be used to characterise the properties of concrete based on e.g. Recycled Aggregates, of Geopolymer Concrete or of concrete integrating Supplementary Cementitious Materials (SCM).
New innovative concrete formulation
nother important research activity of Prof. Waldmann in this field is to develop New innovative concrete formulation. Prof. Waldmann is experienced in the development of lightweight concretes based on e.g. expanded clay aggregates, on woodchip concrete and on Miscanthus grass. Furthermore, she is working on a new insulation material based on Miscanthus fibers and the Mycelium mushroom. As example Figure 7, shows a Masonry bloc with a bearing part based on concrete and Miscanthus (left side) and an insulation part based on Miscanthus and Mycelium (right side). In order to meet the societal challenges, which are (i) reduction of the energy consumption, (ii) reduction of the consumption of natural resources and (iii) the reduction of CO2 production, Prof. Waldmann is convinced that only the combination of structural and material related aspects of concrete can lead to technically and economically reliable solutions.
