Strengthening of Reinforced Concrete Members using Post-Tension Cables: A Parametric Research
Hanadi Elkhansa1, Oussama Baalbaki2

1Hanadi Elkhansa, Research Scholar, Department of ECE, JNTU, Kakinada (Andhra Pradesh), India.
2Oussama Baalbaki, Professor, Department of ECE, JNTU, Kakinada (Andhra Pradesh), India.
Manuscript received on 24 July 2019 | Revised Manuscript received on 03 August 2019 | Manuscript Published on 10 August 2019 | PP: 1334-1338 | Volume-8 Issue-2S3 July 2019 | Retrieval Number: B12500782S319/2019©BEIESP | DOI: 10.35940/ijrte.B1250.0782S319
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Abstract: In building construction, post-tensioning allows longer clear spans, thinner slabs than the reinforced concrete beams. This paper presents a theoretical investigation on the behavior of existing reinforced concrete beams strengthened with post-tensioning cable(s) for increasing their load capacity. The proposed post-tensioning technique consists of stressing cable passing through a structural beam element starting from the top/bottom side and traversing the beam to the bottom/top side and then return back to the original side. A theoretical parametric study is conducted to study the effect of post-tensioning parameters on the internal stresses to optimize the design parameters. An excel spread sheet program was developed to calculate the internal straining actions at critical sections of the beam. A parametric study including the cable length, inclination angle of the cable and pre-stressing force magnitude was performed by using this program. This parametric study, led to well-defined guidelines for the proper use of the strengthening of beams by pre-stressing cables with adequate geometrical conditions of the cables.
Keywords: Post-tension, Tendons, Concrete Repair, Strengthening.
Scope of the Article: Concrete Structures