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 firstname.lastname@example.org.
Katharina Thehos | Technische Universität Chemnitz
Rock solid: Carbon-reinforced concrete from Augsburg
11.10.2016 | Universität Augsburg
Heating and cooling with environmental energy
22.09.2016 | FIZ Karlsruhe – Leibniz-Institut für Informationsinfrastruktur GmbH
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.
In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...
'Ferroelectric' materials can switch between different states of electrical polarization in response to an external electric field. This flexibility means they show promise for many applications, for example in electronic devices and computer memory. Current ferroelectric materials are highly valued for their thermal and chemical stability and rapid electro-mechanical responses, but creating a material that is scalable down to the tiny sizes needed for technologies like silicon-based semiconductors (Si-based CMOS) has proven challenging.
Now, Hiroshi Funakubo and co-workers at the Tokyo Institute of Technology, in collaboration with researchers across Japan, have conducted experiments to...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
21.10.2016 | Health and Medicine
21.10.2016 | Information Technology
21.10.2016 | Materials Sciences