Author : Dina Yehia Zakaria Ewais
CoAuthors : Amr Abdelrahman; Hussien Okail
Source : International Journal Of Advanced Engineering Research and Science (IJAERS)
Date of Publication : 03/2017
Abstract :
This study discusses the flexural behavior of
reinforced concrete girders strengthened using posttensioning
embedded in concrete jackets. The concept
benefits from the external jacket to help increasing the
cross-section inertia as well as to host the post-tensioning
tendons without the need of external deviators. This results
in a significant enhancement to the strength and stiffness of
the original girder. The experimental phase of the study was
conducted on two stages the first deals with girders loaded
on their original section firstly and then strengthened with
the jacket and loaded to failure, while the second had the
girders that were strengthened before being subjected to
loads. In addition to the stage of jacket introduction, the
difference between the original girder and the jacket’s
concrete compressive strength was also studied. In the
analytical phase of the study, a numerical model was built
using the finite element method to simulate the response of
the tested girders in the two experimental stages. This paper
presents findings of the experimental program as well as
the comparison with the analytical results of the model
which showed a close correlation. This model may then be
used with confidence to conduct an extensive analytical
study for untested parameters
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