Fully automated quality control system for CRC components
Table of contents
Project data
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Titel | Title |
Report in the annual report 2022
Quality of precast CRC elements
Reinforcement production in the precast concrete plant
Terms such as climate neutrality, resource conservation, shortage of skilled labor but also serial construction and Industry 5.0 are increasingly mentioned in connection with concrete construction. In order to meet the associated requirements, significant changes in materials, designs and processes are needed in some cases. Construction practice is already demonstrating that the new material combination carbon reinforced concrete can be used to create extremely thin and thus resource-saving building structures. However, the thinner components become, the more precisely they have to be manufactured. With 20 cm thick components, for example, 5 mm deviations in the component thickness or the position of the reinforcement are acceptable – but not with 3 cm thick components. Here, deviations of 1–2 mm already have a considerable influence on the load-bearing capacity. The increased demands on accuracy are not placed on a product of a manufactory, but on an industrially produced mass product. However, processes and machines in most precast plants that produce steel reinforced concrete components to date are not suitable for this in all production steps.
The aim of the project is to significantly reduce the quality fluctuations in the production of precast and semi-precast parts made of carbon reinforced concrete by using a holistic, continuous and fully automated process monitoring system directly in the concrete plant. At the same time, economic efficiency and ecology are to be greatly improved. This includes all process steps from formwork and paving installation, carbon reinforcement production, the concreting process, insertion of insulating materials and preparation for transport in a concrete plant following the example of other industries, e.g. the automotive industry. In addition, it should be possible to readjust the processes in the concrete plant in a fully automated manner in the event of deviations occurring.
The tasks of the Institute of Concrete Structures mainly comprise the analysis of the distribution of approval-relevant parameters for the carbon reinforced concrete construction method. It is to be answered in which way different process parameters during the production of reinforcement and concrete components influence the performance of the resulting components. Among other things, findings from component tests of the large-scale research project C3 – Carbon Concrete Composite will be analyzed. Finally, new test components from the project partners will be used to systematically investigate how quality is influenced during the production of reinforcement and carbon reinforced concrete components.