Cyclic behavior of beams rehabilitated by reinforced concrete layers

Tankut, Ali Tuğrul
One of the well-known methods for rehabilitation of insufficient or damaged reinforced concrete (RC) beams is to add a new RC layer. Although RC beams strengthened or repaired in this way have proved themselves under monotonic and repeated loads, the behavior under cyclic loads has not been adequately investigated yet. In this experimental research, beams were strengthened, repaired, or revived (repaired after heavy damage) using familiar RC layer adding methods and tested under reversal cyclic loading. Ten half-scaled specimens, composed of columns and a beam, were prepared and 18 tests were conducted on these specimens. The obtained results showed that the strengthened and repaired beams mostly could achieve the monolithic behavior. However, sufficient ductility could not be maintained for the revived ones.


Behavior of reinforced concrete deep beam with web openings strengthened with (CFRP) sheet
Jasim, Waleed A.; Tahnat, Yazan B. Abu; Halahla, Abdulsamee M. (2020-08-01)
Deep beams are used in various applications in reinforced concrete (R.C.) structures. There have been continuous efforts to enhance and improve the performance of these crucial elements in (R.C.) structures by using several strengthening techniques such as using the carbon fiber-reinforced polymer (CFRP). However, by exploring the literature, none of the previously conducted experimental tests have studied the propagation of cracks beneath the (CFRP) sheets. In this research, the propagation of the first di...
Application of Mesh Reinforced Mortar for Performance Enhancement of Hollow Clay Tile Infill Walls
Ezzatfar, Pourang; Binici, Barış; Kurç, Özgür; Canbay, Erdem; Sucuoğlu, Haluk; Özcebe, Güney (2014-01-01)
The use of mesh reinforcement with mortar on existing brick infill walls of reinforced concrete (RC) frames is a recommended seismic strengthening procedure in the Turkish Seismic Code (2007). The premise of the method lies in its ease of application and success in eliminating the out-of-plane failure of existing infill walls. The performance of the mesh reinforced mortar (MRM) application was investigated by pseudo-dynamic (PsD) and cyclic testing. A three-story-three-bay 1:2 scale RC frame with hollow cla...
Modeling Beam-Column Joints in Fragility Assessment of Gravity Load Designed Reinforced Concrete Frames
Çelik, Ozan Cem (Informa UK Limited, 2008-3-14)
Reinforced concrete (RC) frame structures customarily have been designed in regions of low-to-moderate seismicity with little or no consideration of their seismic resistance. The move toward performance-based seismic engineering requires accurate reliability-based structural analysis models of gravity load designed (GLD) RC frames for predicting their behavior under seismic effects and for developing seismic fragilities that can be used as a basis for risk-informed decision-making. This analytical approach ...
Vulnerability assessment of reinforced concrete moment resisting frame buildings
Erduran, Emrah; Yakut, Ahmet (2007-04-01)
A detailed seismic performance assessment procedure has been developed for reinforced concrete (RC) frame buildings with masonry infill walls. The procedure is based on member damage functions, in terms of interstory drift ratios. These functions are developed for the primary components, namely, columns, beams, and infill walls. For developing these functions, analytical investigations to determine the influence of several parameters on the damageability of components were combined with experimental data. A...
Strengthening of brick infilled rc frames with cfrp reinforcement-general principles
Akın, Emre; Özcebe, Güney; Department of Civil Engineering (2011)
There is an excessive demand for the rehabilitation of frame type reinforced concrete (RC) buildings which do not satisfy current earthquake code provisions. Therefore, it is imperative to develop user-friendly seismic strengthening methodologies which do not necessitate the evacuation of building during rehabilitation period. In this study, it was aimed to strengthen the brick infill walls by means of diagonal Carbon Fiber-Reinforced Polymer (CFRP) fabrics and to integrate them with the existing structural...
Citation Formats
S. AYKAÇ, E. ÖZBEK, and A. T. Tankut, “Cyclic behavior of beams rehabilitated by reinforced concrete layers,” STRUCTURAL CONCRETE, pp. 0–0, 2021, Accessed: 00, 2021. [Online]. Available: