Innovative, unbounded prestressing

Precast floor slab made of carbon-reinforced concrete

As part of the C ³ research project on carbon-reinforced concrete, an unbounded prestressing system has been developed, in particular, taking the requirements of building construction into account (sub-project V4.2 prestressed carbon-reinforced concrete). The flexible system – post tensible, reusable, modular – is composed of a friction clamp anchoring and a CFRP laminate as tension member. With the collaboration of the C³ project V1.5 Recycling and reusability of carbon-reinforced concrete, two floor elements were implemented, which take the historical Möller Girder up by their shape followin...

Related articles:

Issue 06/2022

Lightweight, prestressed carbon-reinforced concrete floor slabs – New perspectives for the precast industry

Since the 1930s, numerous prestressed thin-walled building elements, prestressed both with and without bond, have been used in construction worldwide. Examples range from buildings with simple slab...

more
Issue 02/2021

Carbon prestressing – New floor cross-sections for building construction

Owing to the significant share of cement production, building with concrete generates about 8?% of global CO2 emissions while also contributing to the imminent worldwide depletion of sand and gravel...

more
Issue 08/2009 An alternative to reinforced concrete

Use of prestressed concrete in floor slab production

Precast prestressed floors slabs from Echo-Elbe consist of a lower and upper concrete layer connected to each other via the webs. The prestressed strands and/or wires in sizes 5.7, 9.3 mm and 12.5...

more
Issue 03/2025

Agri-PV-frame: Sustainable utilization of prestressed carbon-reinforced concrete components through reuse

Since 2012, Ginkgo Projektentwicklung GmbH based in Dresden, Germany, has specialized in the pretensioning of carbon textile strands and uses its patented, state-of-the-art processes for producing...

more
Issue 02/2015 Market potential in bridge infrastructure

Use of carbon-reinforced shotcrete to increase the shear resistance of prestressed-concrete girders

The German highway network includes over 39,000 bridges with a total length of almost 2,100 km. Most of these bridges were built from prestressed concrete in the period from 1965 to 1985 (Fig. 1)....

more