New timber-concrete composite connection

  • University of Luxembourg
  • From Luxembourg
  • Responsive
  • Innovative Products and Technologies

Summary of the technology

The cement industry accounts for 6% of the EU’s CO2 emission. In a typical reinforced concrete building, floors account for approximately half of the amount of concrete. The necessity for concrete in flooring systems can be significantly reduced by using different materials. The combination of timber and concrete has become especially interesting in the last decades.

The research is focused on timber-concrete composite (TCC) structural floors. Usually, TCC floors are made of timber beams or a deck connected to an upper concrete layer.

Nevertheless, there are many ways to combine and connect timber and concrete into one hybrid floor component. Engineering conceptions are conditioned by varying functional requirements.

University of Luxembourg

Details of the Technology Offer

In Luxembourg, there is a growing need for modular, reusable, resource efficient components in the construction industry, to serve some of the country’s strategic goals.

The research is done on a connection technology that allows destruction-free assembly and reassembly of a TCC floor and its main constituents. It does not require the use of steel shear connectors. It is composed of a specific notch embedding a concrete compression link that can be processed separately from the rest of the upper concrete layer. The connection technology relies on mechanical interlocking.


  • This technology allows destruction-free assembly and re-assembly.
  • Manufacturing and assembly of many steel shear connectors is not necessary.
  • The notch is relatively easy to realise. It can be automated as well as performed by a craftsman with conventional tools.
  • Many different types of timber can be used, under the form of beams or decks.
  • Once recycling becomes inevitable, the parsing of different materials is straightforward.


  • The elements have been pretested with finite-element analysis.
  • Laboratory tests are planned

Related Keywords

  • Industrial manufacturing, Material and Transport Technologies
  • Carbon capture and energy
  • Capture and Storage of CO2
  • Social and Economics concerns
  • Sustainability
  • Protecting Man and Environment
  • Environment
  • Ecology
  • Measurements and Standards

About University of Luxembourg

The University of Luxembourg, founded in 2003, is multilingual, international and strongly focused on research. Its students and staff have chosen a modern institution with a personal atmosphere, close to the European institutions, international companies and the financial place.

Teaching, research and knowledge transfer at the highest international level: those are the goals that this university set from the start. With 270 professors, associate professors, assistant professors and senior lecturers, students from 130 different countries and lecturers originating from 20 different countries, the University offers a multicultural environment. Exchange agreements and research cooperations exist with 354 universities around the world.

About 6,783 students (Bachelor, Master, PhD/Doctorate, learning courses, vocational training and lifelong learning) can choose from over 60 degrees, offered by:
- The Faculty of Science, Technology and Medicine,
- The Faculty of Law, Economics and Finance,
- The Faculty of Humanities, Education and Social Sciences.

The central research priorities of the University of Luxembourg are:
- Materials Science
- Computer Science & ICT Security
- European and International Law
- Finance and Financial Innovation
- Education
- Digital and Contemporary History

as well as cross-disciplinary themes (details at
- Health and Systems Biomedicine
- Data Modelling and Simulation (formerly known as Computational Sciences)

University Rankings
- Among the top 250 universities in the Times Higher Education (THE) World University Rankings 2021.
- No. 3 worldwide in the THE “international outlook” Rankings 2021.
- No. 20 worldwide in the THE Young University Rankings 2021.

University of Luxembourg

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