2014) Effect of infill wall on the ductility and behavior of high strength reinforced concrete frames, HBRC Journal, 10:3, 258-264, Abstract This paper presents an experimental study for the behavior and ductility of H.S.R.C frames with infill wall under the effect of cyclic load. The experimental program was conducted on four specimens (frames). The parameters are studied change panel of frame from non infill to infill, change thickness of infill wall and change type of bricks. The dimension of frames is selected to represent half scale frames and tested under cyclic loading. All specimens of experimental program are tested in the reinforcement concrete testing laboratory at the Housing and Building National Research Center -Cairo.From the representation and the analysis of the obtained results, the main conclusions are pointed out; the lateral load resistance for infilled frames F2, F3 and F4 with infill wall (red bricks) thickness 12, 6 cm and cement bricks 12 cm, respectively was greater than the bare frame (F1) by about 184%, 61% and 99%, respectively. The ductility factor for infilled frames F2, F3 and F4 was less than the bare frame (F1) by about 57%, 51% and 46%, respectively. ª 2014 Production and hosting by Elsevier B.V. on behalf

This paper presents an experimental study for the behavior and ductility of H.S.R.C frames. The experimental program was conducted on five specimens (frames). F1 is a control specimen consisting of beam with cross section 12 • 20 cm and length 1.85 m and two columns with cross section 12 • 20 cm and height 1.5 m. In the second specimen (F2) the depth of beam is changed from 20 cm to 30 cm but in the third specimen (F3) the dimensions of columns are changed to 12 • 30 cm while in the fourth specimen (F4) the aspect ratio h/L (height to length of panel) of frame is changed from 0.81 to 0.625. The fifth specimen (F5) has different details of connections between columns and beam. The stirrups are arranged in half spacing distance at connection with respect to the regular distance of all columns and beams. The dimension of frames is selected to represent half scale frames and tested under cyclic loading. All specimens of the experimental program are tested in the reinforced concrete testing laboratory at Housing and Building National Research Center in Cairo. The results of the tests and the analysis of the obtained results are represented in different ways.

The use of Slurry Infiltrated Fiber Concrete (SIFCON) in reinforced concrete corner connections subjected to opening bending moments has been experimentally investigated. An experimental program has been carried out, in which fifteen specimens have been tested; six reinforced concrete joints, one fiber reinforced concrete joint, and eight SIFCON joints. Different reinforcing bars' details and different volumes of fraction of fibers (V f ) have been investigated. It was found that, in all the RC specimens, the joints failed before reaching the capacity of the connecting members. There was also a significant difference in the different joints' efficiency due to the variety of reinforcement details. The use of SIFCON in the joints increased both the joints capacity and ductility. The enhancement of the joint capacity and ductility could reach as high as 66% and 173%, respectively. This is attributed to the ability of the high volume of fibers to effectively bridge the cracks and retard the compression failure of the diagonal struts in the joints. The increase in the amount of fibers was proven to directly enhance the behavior of the SIFCON joints. In joints with V f =6% and 8%, the joint capacity exceeded the connecting members' capacity, leading to failure in the members before the joints, which is an advantageous requirement of the design.

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