Civil Engineering Reference
In-Depth Information
To analyze the shear behavior of Hollow Core Slabs made of
ber reinforced
concrete, which is of great interest due to the dif
culties involved in
tting
transverse reinforcement in these elements.
Analysis of an extensive database to verify the standards in Current Codes.
2.3 Final Considerations
Possible improvements of the current building codes was considered to be more
important than proposing a new shear formula as Regan has pointed out [
1
]:
The
most imposing analyses have often given excellent correlation with known results
but failed miserably to predict behavior in untried circumstances. For simpler
models the problem is mostly that of the need to neglect secondary factors, while
what is secondary in one case may be primary in another. This is not to question the
desirability of models, or of re
“
ned analysis at least as a research tool, but to point
to the need for very careful veri
cations. It also points to the fact that signi
cant
improvements
for design are very likely to be initiated by experimental
”
observation
.
This thesis will therefore focus on a deeper understanding of the parameters that
influence shear strength and try to identify any possible defects in existing design
formulas.
On the other hand,
bers in concrete mixtures has not yet been
fully utilized by the concrete industry for several reasons: steel
“
the use of steel
bers are often
considered expensive and [
2
] the shear behavior of concrete containing steel
bers
is still not fully understood. It is important to better understand and predict the shear
behavior of SFRC for its wider applications in the concrete industry
”
[
3
].
Without any doubt Regan
'
s claim [
1
] invites us to re
fl
ect and leaves no-one
indifferent:
“
Research on shear: a bene
t to humanity or a waste of time?
”
References
1. Regan, P.E. 1993. Research on shear: a bene
t to humanity or a waste of time? The Structural
Engineer 71(19): 337
-
347.
2. Chanh, N. 2004. Steel
ber reinforced concrete, 108
-
116. Vietnam: Faculty of Civil
Engineering, Ho Chi Min City University of Technology.
3. Slater, E., Moni, M., and Alam, M.S. 2012. Predicting the shear strength of steel ber reinforced
concrete beams. Construction and Building Materials 26: 423
436.
-
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