Experimental Analysis of RC Elements Strengthened with CFRP Strips

This work is the result of experimental research conducted to determine the contribution of a composite material to improving the mechanical behavior of old, full-size reinforced T-beams in operation conditions under the action of short-term loads. The tension side of their ribs were strengthened by...

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Bibliographic Details
Published in:Mechanics of composite materials 2020-03, Vol.56 (1), p.75-84
Main Authors: Vuković, N. K., Jevrić, M., Zejak, R.
Format: Article
Language:English
Subjects:
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Composite materials
Composites
Flexural strength
Glass
Materials Science
Mechanical properties
Modulus of rupture in bending
Natural Materials
Solid Mechanics
Stress concentration
T beams
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Summary:This work is the result of experimental research conducted to determine the contribution of a composite material to improving the mechanical behavior of old, full-size reinforced T-beams in operation conditions under the action of short-term loads. The tension side of their ribs were strengthened by carbon strips of different lengths. Then, they were tested in loading by concentrated and uniformly distributed short-term loads. It was concluded that, for strengthening simply supported beams, there was no need for using CFRP strips longer than half of their length, and a lateral anchorage was not required. This refers to bending tests where no load increment exceeding 60% of the flexural strength is expected. The results obtained from this experiment may be of use in modern engineering practices, especially because tests conducted on old, full-size samples are very rare.
ISSN:0191-5665
1573-8922
DOI:10.1007/s11029-020-09861-x