EFFECTS OF TENSILE REINFORCING STEEL RATIO AND NEAR-SURFACE-MOUNTED BAR DEVELOPMENT LENGTH ON THE STRUCTURAL BEHAVIOR OF STRENGTHENED RC BEAMS

HESHAM EL-EMAM; ALAA ELSISI; MOHAMED KHALIFA BNENI; SELEEM S. AHMED; HOSSAM EL-DIN M. SALLAM

doi:10.1590/1679-78255836

EFFECTS OF TENSILE REINFORCING STEEL RATIO AND NEAR-SURFACE-MOUNTED BAR DEVELOPMENT LENGTH ON THE STRUCTURAL BEHAVIOR OF STRENGTHENED RC BEAMS

Authors

HESHAM EL-EMAM FACULTY OF ENGINEERING, ZAGAZIG UNIVERSITY, ZAGAZIG 44519, EGYPT HTTPS://ORCID.ORG/0000-0002-7685-2985
ALAA ELSISI FACULTY OF ENGINEERING, ZAGAZIG UNIVERSITY, ZAGAZIG 44519, EGYPT / B DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING, UNIVERSITY OF MISSOURI, COLUMBIA, MO 65211-2200, UNITED STATES HTTPS://ORCID.ORG/0000-0001-8190-6100
MOHAMED KHALIFA BNENI FACULTY OF ENGINEERING, ZAGAZIG UNIVERSITY, ZAGAZIG 44519, EGYPT / FACULTY OF ENGINEERING, UNIVERSITY OF ZAWAI, ZAWAI 16418, LIBYA HTTPS://ORCID.ORG/0000-0002-4352-5654
SELEEM S. AHMED FACULTY OF ENGINEERING, ZAGAZIG UNIVERSITY, ZAGAZIG 44519, EGYPT HTTPS://ORCID.ORG/0000-0001-9894-0209
HOSSAM EL-DIN M. SALLAM FACULTY OF ENGINEERING, ZAGAZIG UNIVERSITY, ZAGAZIG 44519, EGYPT HTTPS://ORCID.ORG/0000-0001-9217-9957

DOI:

https://doi.org/10.1590/1679-78255836

Abstract

NEAR SURFACE MOUNTED (NSM) GLASS FIBER REINFORCED POLYMERS (GFRP) BARS IS ONE OF THE MOST POPULAR AND EFFECTIVE TECHNIQUE IN STRENGTHENING REINFORCED CONCRETE BEAMS. IN THIS PAPER, AN EXPERIMENTAL RESEARCH PROGRAM TO STUDY THE FLEXURAL STRENGTHENING OF RC BEAMS WITH TWO DIFFERENT AREAS OF BOTTOM TENSILE REINFORCING STEEL AND THREE DIFFERENT DEVELOPMENT LENGTHS OF NSM GFRP BARS WAS PRESENTED. THE TESTED BEAM RESULTS ILLUSTRATED THAT THE BEAM FLEXURAL STRENGTH INCREASED UP TO 110% AND 58% IN THE CASES OF LOW AND HIGH TENSILE REINFORCING STEEL RATIO, RESPECTIVELY. THE EFFECT OF THE TENSILE REINFORCING STEEL AREA ON THE CRITICAL VALUE OF THE DEVELOPMENT LENGTH OF NSM GFRP BARS AND WAS INVESTIGATED. IT WAS FOUND THAT, DECREASING THE AXIAL STIFFNESS RATIO; REDUCE THE EFFICIENCY AND THE CRITICAL DEVELOPMENT LENGTH OF THE NSM GFRP BARS. FURTHERMORE, A 3D FINITE ELEMENT MODEL USING ANSYS WAS CONSTRUCTED. THE DEVELOPED FE MODELS WERE VALIDATED USING THE EXPERIMENTAL RESULTS. A GOOD AGREEMENT BETWEEN EXPERIMENTAL AND FE RESULTS WAS FOUND.

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Published

2020-07-30

Issue

Vol. 17 No. 6 (2020)

Section

Articles

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