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Flexural Performance of Reinforced Concrete Beams Strengthened by a New Side Near-Surface Mounted Technique Using Carbon Fibre-Reinforced Polymer Bars: Experimental and Analytical Investigation

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This paper introduces an innovative approach, referred to as the Side Near-Surface Mounted (S-NSM) technique, for flexural strengthening of reinforced concrete (RC) beams using Carbon Fibre-Reinforced Polymer (CFRP) bars. Experimental and analytical investigations were conducted to explore the strengthening of RC beams with S-NSM CFRP bars. Analytical models were shown to predict the flexural response of the RC strengthened specimens. Four-point bending tests were performed under static conditions up to failure on the rectangular RC beams (which had been strengthened using different ratios of S-NSM reinforcement) while load, mid-span deflection, strain and failure modes were recorded. The test results revealed that the S-NSM technique with CFRP bars improves the flexural performance of RC beams. The increase in the S-NSM reinforcement ratio measurably enhances the flexural capacity, crack characteristics and energy absorption capacity. The results predicted by the analytical models express good agreement with the experimental data, which prospects confident implementation of the proposed S-NSM technique.
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Keywords: ANALYTICAL MODEL; CRACK CHARACTERISTICS; DAMAGE BEHAVIOUR; ENERGY ABSORPTION CAPACITY; S-NSM

Document Type: Research Article

Publication date: April 1, 2016

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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