Analysis of reinforced concrete beams with openings and strengthened by (CFRP)‎ laminates

الملخص EN

Tension capacity of reinforced concrete is always less than compression capacity for this reason if to make openings at the flexure region of reinforced concrete beams need must know the safe (length / depth) ratio of opening and also strengthening the flexure region of this beam.

In several occasions existing RC beams have been found to be deficient in tension and is need of Conventional strengthening methods such as by external post tensioning member, member enlargement along with internal transverse steel, and by bonded steel plates.

The cost once, requiring extensive equipment, time and significant labor.

Conversely, the relatively new alternative strengthening technique using advanced composite materials, known as fiber reinforced polymer (FRP) offers significant advantages such as simplicity of installation, lower construction time and improved durability.

The overall objective of this study was to investigate reinforced concrete beams with different shape of openings and constant area at flexural region and strengthening by externally fixed (CFRP) prepared strips.