It is well known that arch is a main part of the historical structures. Therefore, many techniques are used to strengthen these arches. In this paper, Fiber Reinforced Polymer (FRP) is used to reinforce the arch under vertical loads. Materially Non-L
inear Analysis (MNLA) is performed to demonstrate the behavior of the arch with and without the FRP.
On the other hand, the effect of FRP lamina thickness and length is undertaken in this research. This paper shows that a small amount of the FRP to some local areas can enhance the ultimate strength of the arch significantly.
This paper makes an experimental and analytical investigation of cracks characteristics in Fiber Reinforced Polymer strengthened RC beams under different levels of sustained load and Reinforced ratio.
As the equations available for conventional RC b
eams are inappropriate for the calculation of the short-term crack width in FRP-strengthened RC beams[8], a statistical analysis is carried out on available test data from international sources [6-9-10] and from the test results obtained in the current study (Concrete Labor- Civil engineering Department- Damascus University-2014) to establish a new equation that considers the effect of the FRP laminates. This equation is a correlation of stress in steel bars, concrete surface tension , and effective side cover.
The long-term crack width is then related to the instantaneous crack width by empirical equations which are derived from the test results obtained in the current study.
Beams are considered as one of the most loaded concrete elements, which needs to
be strengthened either as a result of insufficient of concrete section, or insufficient rebar or
increased loads, or the result of a superficial steel or corrosion of
internal steel
reinforcement, and other reasons that we will mention them what we need to study this.
The damaged structural elements and their inability to function fully as a result of exposure
to different environmental factors damage materials and lead to lower resistance, or
because of the existence of of an executive defects or inappropriate investment for its,
leads to the need to rehabilitate maintenance and repair or reinforcement. So it was
resorting to strengthen either magnify sections or supply necessary reinforcement or steel
platelets linking external supported well to concrete section, and because of the difficulty
of execution the recent studies has been implemented on the use of more efficient material
which is concentrated fiber reinforced polymers.
We will present here to methods of strengthening the shear up to the global studies
conducted using these materials from polymers, which are characterized by high resistance
to tensile and large resistance to environmental factors and weather conditions and ease of
application in the specified permissible sites.
