Effectiveness of Strengthening RC Beams Using Composite Materials—An Accelerated Strengthening Method-Reference-Cited by-同舟云学术

Effectiveness of Strengthening RC Beams Using Composite Materials—An Accelerated Strengthening Method

Published:2023-07-06 Issue:13 Volume:16 Page:4847
ISSN:1996-1944
Container-title:Materials
language:en
Short-container-title:Materials

Author:

Michałowska-Maziejuk Dorota¹^ORCID,Goszczyńska Barbara¹^ORCID

Affiliation:

1. Faculty of Civil Engineering and Architecture, Department of Strength Materials and Building Structures, Kielce University of Technology, al. Tysiąclecia Państwa Polskiego 7, 25-314 Kielce, Poland

Abstract

The article analyses the results obtained from tests of preloaded reinforced concrete beams strengthened with carbon fibre strips bonded into the concrete reinforcement cover (NSMR method). Adhesive (thixotropic epoxy resin) bonding takes 7 days at 23 °C. The strengthening process was accelerated by heating the strip using a prototype heating device. Tests on the reinforced concrete members confirmed that accelerating the strengthening process is feasible and allowed the selection of the optimal heating temperature to provide the greatest strengthening level. The study primarily aimed to analyse the effectiveness of strengthening applied to the bottom of reinforced concrete beams under sustained loading throughout the adhesive curing process, simulating real conditions on site. Significantly higher strengthening efficiency was achieved with the use of strip heating, which accelerated adhesive cure time and reduced the strengthening execution time from 7 days to 1.5 h. The analysis included the evaluation of the effect of the steel and composite reinforcement ratios on strengthening effectiveness.

Publisher

MDPI AG

Subject

General Materials Science

Link

https://www.mdpi.com/1996-1944/16/13/4847/pdf

Reference38 articles.

1. Golias, E., Zapris, A.G., Kytinou, V.K., Kalogeropoulos, G.I., Chalioris, C.E., and Karayannis, C.G. (2021). Effectiveness of the Novel Rehabilitation Method of Seismically Damaged RC Joints Using C-FRP Ropes and Comparison with Widely Applied Method Using C-FRP Sheets—Experimental Investigation. Sustainability, 13.

2. Karayannis, C., Golias, E., and Kalogeropoulos, G.I. (2022). Influence of Carbon Fiber-Reinforced Ropes Applied as External Diagonal Reinforcement on the Shear Deformation of RC Joints. Fibers, 10.

3. RC beams strengthened with GFRP plates. I: Experimental study;Saadatmanesh;J. Struct. Eng.,1991

4. Täljsten, B. (1994). Plate Bonding: Strengthening of Existing Concrete Structures with Epoxy Bonded Plates of Steel or Fibre Reinforced Plastics. [Ph.D. Thesis, Luleå University of Technology].

5. Strengthening of structures using carbon fibre/epoxy composites;Meier;Constr. Build. Mater.,1995

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