—TCC consists of timber and concrete members
acting compositely together. The strength, stiffness, location
and number of connectors play a crucial role for the composite
action and structural performance of TCCs.
In upgrading of timber floor to TCC, existing floorboards
can be used as a permanent formwork whilst the concrete is
then poured over connectors inserted into timber floorboards.
Hence, the influence of interlayer on mechanical properties of
TCC joints and floor is of interest.
To date, conventional concrete has been used in most
investigations on TCCs. Self-compacting concrete (SCC) is
recognized as a highly workable which is compacted without
use of conventional vibration methods. As such, there is a
potential for application of SCC in TCCs where the pumping,
and compacting of conventional concrete poses a challenge e.g.
difficult to access areas in the renovation of timber floors in
This paper focuses on utilizing mechanical fasteners for their
ductility and stiffness to connect a SCC slab (with and without
interlayer) to a timber beam, that is, the use of SCC forms an
important parameter of this research. The experiment consists
of push-out tests to characterizeload capacity and various
stiffness. The responses of the specimens are also compared to
that of TCCs with conventional concrete.
—Timber concrete composite (TCC), interlayer,
self-compacting concrete (SCC), SFS screw connection.
The authors are with University of Technology, Sydney, Australia (e-mail:
Cite: F. Moshiri, R. Shrestha, and K. Crews, "F. Moshiri, R. Shrestha, and K. Crews," International Journal of Engineering and Technology vol. 7, no. 2, pp. 103-109, 2015.