Illuminated pavilions on campus demonstrate the use of curved shell structures made of carbon fibre-reinforced concrete, a project of the Lightweight Construction Research Group at the TU Chemnitz
Concrete which is reinforced with textiles instead of steel combines many advantages: it saves raw materials, has high potential for lightweight construction, and can thus be used in innovative ways. Reinforcing fabrics such as carbon do not rust and thus have a longer lifespan. They make it possible to design lighter concrete layers and more delicate construction components.
“In order to use fabric-reinforced concrete slabs as thin, load-bearing structures – for example as curved shells – we needed new solutions as far as composition and manufacturing were concerned,” says Dr Sandra Gelbrich, head of the research group “Lightweight Constructions in Civil Engineering“ in the Department for Lightweight Structures and Polymer Technology at the Technische Universität Chemnitz.
The scientists at the TU Chemnitz have developed fibre-reinforced concrete shells, containing high-strength fine-grained concrete and carbon reinforcement. The results are free-formed prototype buildings in shell construction.
The researchers have manufactured the thin-walled carbon fibre-reinforced concrete shells by means of a flexible formwork system made of glass-fibre reinforced plastic (GFRP). Therefore they firstly coated and preformed the textile reinforcement structures with resin and afterwards concreted the shells with integrated fibres.
“GFRP formwork systems allow not only an efficient production of curved textile-reinforced concrete elements, but also the processing of excellent concrete qualities,” says Dr Gelbrich and adds: “We have developed new polymer-based positioning instruments in order to integrate the textile reinforcement in a way that it can optimally cope with the load.”
As prototype buildings the scientists have erected research pavilions made of carbon fibre-reinforced concrete on the campus of the TU Chemnitz. “A highlight there is the integrated LED lighting, which is controlled by sewn touch sensors in the shape of a hand,” emphasizes Gelbrich.
Research and development related to the composite made of carbon fibres and high-performance concrete are being pursued: scientific associations and companies aim at long-living, resource-saving, and aesthetically appealing construction work. More than 130 partners, including the TU Chemnitz, are part of the research consortium “C3 – Carbon Concrete Composite” in order to implement this vision.
Their purpose is a building material that replaces steel reinforcement, which is susceptible to corrosion, by a combination of carbon fibres, textile structures, and concrete, which is less often in need of repair.
“Additionally, new properties such as thermal and electrical conductivity allow the heating of the components and the system-integration of sensors. The new material is intended to be more mouldable, solid, smart, and recyclable. Furthermore, it should contain less harmful substances,” summarizes Gelbrich and highlights: “We expect completely new possibilities in civil engineering, first and foremost in the construction of bridges and roads.”
At the end of November 2015, the C3 consortium received the German sustainability award “Deutscher Nachhaltigkeitspreis“ in the research category from the Federal Minister for Education and Research, Professor Dr Johanna Wanka at an award ceremony in Düsseldorf.
In its commentary on the reason for the award, the selection committee stated that the research and development of the new building material offers “a promising approach towards a paradigm shift in civil engineering and therefore in urban design”.
The C3 project would accomplish an important contribution to open a new chapter in the history of construction. The C3 consortium is coordinated by the Technische Universität Dresden and funded by the Federal Ministry for Education and Research.
For further information, contact Dr Sandra Gelbrich, Department for Lightweight Structures and Polymer Technology, Telephone 0371 531-32192, email email@example.com.
Katharina Thehos | Technische Universität Chemnitz
Modular storage tank for tight spaces
16.03.2017 | FIZ Karlsruhe – Leibniz-Institut für Informationsinfrastruktur GmbH
Smart homes will “LISTEN” to your voice
17.01.2017 | EML European Media Laboratory GmbH
An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.
Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...
Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.
Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...
Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.
As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...
Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.
With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...
Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine
Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...
19.06.2017 | Event News
13.06.2017 | Event News
13.06.2017 | Event News
27.06.2017 | Power and Electrical Engineering
27.06.2017 | Information Technology
27.06.2017 | Physics and Astronomy