The goal of the present thesis is to analyze and discuss the cyclic loading behavior of two structural reinforced concrete walls which strengthened by extra confinement at edge of their footage. This thesis is defined as two experiments all along some previous tests which have been done before at NTUA laboratory of concrete structure (seismic behaviour of RC walls: an attempt to reduce reinforcement congestion by Kotsovos and Kotsovos, 2011^[1]; effect of transverse reinforcement on short structural wall behaviour by Zygouris N., Kotsovos and Kotsovos ^[2]). In the series of experiments we tried to assess the behavior of structural walls that were designed in accordance with compressive force path (CFP) method. This approach is about to reduce the amount of steel reinforcements by neglecting the effect of conceal columns (CC) ^{[3] & [4]}. 

These particular walls in this thesis are designed and constructed out of two different confinements (U-shaped confinement and cylinder reinforcement) in order to analyze their ductility behavior and resistance improvement.

The new method of confinement brings about big improvement at ductility and proves to be a significantly more efficient design solution without compromising the code performance requirements. We can explain the particular progress with respect to method of compressive force path which is invented by professor M. J. Kotsovos ^[1].

The walls have been built on the following properties: they were designed with respect to CFP method which added a vertical steel cylinder that placed into the wall (figure 2) in order to increase formability (CFP-C1) and the other one confined and strengthen with U-shape steel piece (CFP-U1).

By using these 4 experiments, we show that we can reduce the density of stirrups without reducing the load-carrying capacity, earthquake-resistant or their ductility. In other words, the cost of building and the number of human errors is considerably diminished by utilizing this approach in reality.