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An Innovative Prefabricated Timber-Concrete Composite System

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Author

  • Roberto Crocetti
  • Tiziano Sartori
  • Roberto Tomasi
  • Jose L. F. Cabo

Summary, in English

A novel type of timber-concrete composite floor, consisting of longitudinal glulam beams with a fibre reinforced concrete (FRC) slab on the top is proposed. In order to check some relevant mechanical properties of such a floor, full-scale laboratory tests along with numerical analyses were carried out. The shear connector system used in the investigation consisted of self-tapping screws driven at an angle of 45 degrees to the grain direction of the glulam beams. The manufacture of the structure occurred according to the following steps: (a) the screws were inserted on the top of the glulam beams; (b) the beams were rotated 180 degrees about the longitudinal axis and placed in a concrete formwork; (c) the FRC was cast into the formwork; (d) after curing of the FRC, the composite floor was again rotated 180 degrees about the longitudinal axis into its right position, i.e. with the FRC slab on the top side. Long term tests and quasi-static bending tests were performed. It was found that the proposed connection system showed a very high degree of composite action both during the long-term testing and at load levels close to the failure load. Furthermore, the assembly of the prefabricated timber-concrete composite system revealed to be very fast and easy.

Publishing year

2014

Language

English

Pages

507-516

Publication/Series

Materials and Joints in Timber Structures

Volume

9

Document type

Conference paper

Publisher

Springer

Topic

  • Building Technologies

Keywords

  • timber-concrete composite
  • fiber reinforced concrete slab glulam
  • self-tapping screws
  • floor system
  • long-term test
  • load-carrying
  • capacity
  • stiffness

Conference name

RILEM International Symposium on Materials and Joints in Timber Structures

Conference date

2013-10-08 - 2013-10-10

Conference place

Stuttgart, Germany

Status

Published

ISBN/ISSN/Other

  • ISSN: 2211-0844
  • ISSN: 2211-0852
  • ISBN: 978-94-007-7810-8