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Innovative Timber-Concrete Composite Structures with Prefabricated FRC Slabs

Crocetti, Roberto LU ; Sartori, T. and Tomasi, R. (2015) In Journal of Structural Engineering 141(9).
Abstract
This paper concerns the development of innovative composite floor systems, comprising timber beams and prefabricated concrete slabs. For the development of this new system, two properties were regarded as vital, as follows: (1) good stiffness, and (2) a high degree of prefabrication. Shear connection systems installed using completely dry processes were used. Innovative and very efficient materials, such as fiber-reinforced concrete (FRC) and modified wood, were used for the manufacture of the specimens. The research reported in this paper was conducted in two phases, as follows: (1) the mechanical properties of different shear connectors were investigated (Phase A), and (2) on the basis of these experiment's results a second investigation... (More)
This paper concerns the development of innovative composite floor systems, comprising timber beams and prefabricated concrete slabs. For the development of this new system, two properties were regarded as vital, as follows: (1) good stiffness, and (2) a high degree of prefabrication. Shear connection systems installed using completely dry processes were used. Innovative and very efficient materials, such as fiber-reinforced concrete (FRC) and modified wood, were used for the manufacture of the specimens. The research reported in this paper was conducted in two phases, as follows: (1) the mechanical properties of different shear connectors were investigated (Phase A), and (2) on the basis of these experiment's results a second investigation was carried out in order to study the behavior of full-scale timber-concrete composite slabs (Phase B). During Phase A four different configurations, with a total of eight specimens, were laboratory tested in shear. During Phase B two full-scale floor elements, each with a different shear connection system, were laboratory tested in bending. The two shear connector systems used in the investigation were (1) shear anchor-keys of furfurylated wood, and (2) inclined steel tubes. Both of the proposed connection systems performed more than satisfactorily, showing a very high degree of composite action even at load levels close to the failure load. Moreover, it appeared that the assembling of the prefabricated fiber-reinforced concrete slab with the underlying beams occurred in an extremely easy manner. (C) 2014 American Society of Civil Engineers. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Wood structures, Prefabrication, Modified wood, Dry connection, Timber-concrete composite structure, Shear connection
in
Journal of Structural Engineering
volume
141
issue
9
publisher
American Society of Civil Engineers (ASCE)
external identifiers
  • wos:000359939900021
  • scopus:84939547778
ISSN
0733-9445
DOI
10.1061/(ASCE)ST.1943-541X.0001203
language
English
LU publication?
yes
id
b9ada41e-45e2-4d15-8ac5-26eb56dc3cc1 (old id 7964847)
date added to LUP
2015-09-22 12:47:43
date last changed
2017-08-13 03:51:23
@article{b9ada41e-45e2-4d15-8ac5-26eb56dc3cc1,
  abstract     = {This paper concerns the development of innovative composite floor systems, comprising timber beams and prefabricated concrete slabs. For the development of this new system, two properties were regarded as vital, as follows: (1) good stiffness, and (2) a high degree of prefabrication. Shear connection systems installed using completely dry processes were used. Innovative and very efficient materials, such as fiber-reinforced concrete (FRC) and modified wood, were used for the manufacture of the specimens. The research reported in this paper was conducted in two phases, as follows: (1) the mechanical properties of different shear connectors were investigated (Phase A), and (2) on the basis of these experiment's results a second investigation was carried out in order to study the behavior of full-scale timber-concrete composite slabs (Phase B). During Phase A four different configurations, with a total of eight specimens, were laboratory tested in shear. During Phase B two full-scale floor elements, each with a different shear connection system, were laboratory tested in bending. The two shear connector systems used in the investigation were (1) shear anchor-keys of furfurylated wood, and (2) inclined steel tubes. Both of the proposed connection systems performed more than satisfactorily, showing a very high degree of composite action even at load levels close to the failure load. Moreover, it appeared that the assembling of the prefabricated fiber-reinforced concrete slab with the underlying beams occurred in an extremely easy manner. (C) 2014 American Society of Civil Engineers.},
  articleno    = {04014224},
  author       = {Crocetti, Roberto and Sartori, T. and Tomasi, R.},
  issn         = {0733-9445},
  keyword      = {Wood structures,Prefabrication,Modified wood,Dry connection,Timber-concrete composite structure,Shear connection},
  language     = {eng},
  number       = {9},
  publisher    = {American Society of Civil Engineers (ASCE)},
  series       = {Journal of Structural Engineering},
  title        = {Innovative Timber-Concrete Composite Structures with Prefabricated FRC Slabs},
  url          = {http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0001203},
  volume       = {141},
  year         = {2015},
}