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Viewing report
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A Methodology for Estimating the Axial Response of
Confined Concrete. Edition No. 1
VDM Publishing House, Sep 2008, Pages: 168
The axial strain-axial stress behavior of confined
concrete plays a vital role in the design of concrete
column members; hence an accurate prediction of the
stress-strain behavior is needed.
In this work, the axial response of plain concrete
under varying confining pressure was examined using a
novel triaxial cell mechanism. This work examines
realistic levels of constant, linear elastic, elastic
- perfectly plastic, and elastic-hardening varying
confinement, typical of fiber reinforced polymer and
steel jacketing applications. It is found that the
axial stress-strain response of confined concrete is
dependent on the variation of confining pressure
applied.
A unique model for estimating the axial response of
concrete under varying or constant levels of
confinement is developed with using the results from
companion experimental program. The model is based on
the variation of the confining pressure due to the
lateral dilation of the concrete. The model is shown
to provide an accurate prediction of historical
experimental studies of constant confinement tests on
cylinders, FRP jacketed specimens, and columns
confined with conventional lateral reinforcement or
FRP jackets.
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