Performance of reinforced concrete beams strengthened by hybrid FRP laminates

Hosny, Abdelhady; Shaheen, H.; Abdelrahman, Amr; Elafandy, Tamer

doi:10.1016/j.cemconcomp.2006.07.016

Cited by 66 publications

(38 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hybrid FRP laminates, which consist of a combination of either carbon and glass fibers or glass and aramid fibers have non-linear stress-stain behavior (Belarbi et al 1999). Verification of research show that using the Hybrid FRP for strengthening RC simply supported beams cause to increase both of their capacity and ductility (Xiong et al 2004, Hosny et al 2006and Xiong et al (2007 ).…”

Section: Introductionmentioning

confidence: 95%

Flexural Strengthening of RC Continuous Beams Using Hybrid FRP Sheets

Akbarzadeh

Maghsoudi

2011

Advances in FRP Composites in Civil Engineering

View full text Add to dashboard Cite

Due to linear stress-strain characteristics of FRP up to failure, the ductility of plated members and their ability to redistribute moment is less than that of unplated RC beams. Hybrid FRP laminates, which consist of a combination of either carbon and glass fibers, changes the behavior of the material to a non-linear behavior. Although many in situ RC beams are of continuous construction, there has been very little research into the behavior of such beams with external reinforcement. This paper presents an experimental program conducted to study the behaviour of RC two-span beams strengthened with hybrid carbon and glass reinforced polymer sheets (HCG). The program consists of a total of six continuous beams with overall dimensions equal to 250×150×6000 mm. The test results showed that using the HCG for strengthening the continuous RC beams lead to significantly increase of bearing capacity, ductility and moment redistribution ratio compared to strengthened beams with CFRP or GFRP.

show abstract

Section: Introductionmentioning

confidence: 95%

Flexural Strengthening of RC Continuous Beams Using Hybrid FRP Sheets

Akbarzadeh

Maghsoudi

2011

Advances in FRP Composites in Civil Engineering

View full text Add to dashboard Cite

show abstract

“…From reviewing similar investigations, we knew that the majority of previous long-term tests on RC beams with FRP strengthening were conducted with relatively small or scaled-down member size [14][15][16]. In general, use of scaled-down tests in engineering is the most preferred method when test environments are difficult or involve complex conditions such as requiring a faster time to set up or cost-effective testing.…”

Section: Introductionmentioning

confidence: 99%

Long-Term Behavior of RC Beams Strengthened with Hybrid Composite Beam

et al. 2019

View full text Add to dashboard Cite

This paper describes the results of long-term tests on reinforced concrete (RC) beams strengthened with hybrid composite beam (HCB) under two different sustained loads. Test specimens were fabricated to reflect the most common RC beam size used in school buildings in South Korea. The specimens had dimensions of 400 mm (width) × 600 mm (depth) × 6000 mm (length), and were tested with or without external strengthening by a hybrid composite beam (HCB). Test results showed that strengthening the RC beams with HCB not only reduced the instantaneous deflection but was also effective in decreasing long-term deflection. In this study, time-dependent factors were investigated using a modified version of the American Concrete Institute (ACI) equation. Time-dependent factors of HCB-strengthened RC beams found in the present work differed from those of other investigations due to various experimental conditions. In the present study, we found that the ACI equation may not provide a reasonable estimation of the long-term behavior of HCB-strengthened RC beams.

show abstract

“…The exterior bonding process of steel plates with epoxy adhesive on concrete structures is a very effective and convenient repair method with a short construction time and structural applicability to not only the tight part but also the part with compressive force and shear force. This method, however, because of steel's weakness of poor corrosion resistance, decreases the bonding power of concrete and the steel sheet and, in turn, deteriorates the performance of the structure 1, 2. Also, because of the heavy weight‐to‐volume ratio, it requires more labor and equipment for construction.…”

Section: Introductionmentioning

confidence: 99%

Flexural behavior of methyl methacrylate modified unsaturated polyester polymer concrete beams reinforced with glass‐fiber‐reinforced polymer sheets

Yeon

Kim

et al. 2010

J of Applied Polymer Sci

View full text Add to dashboard Cite

This study represents the behavior of flexural test of methyl methacrylate modified unsaturated polyester polymer concrete beam reinforced with glassfiber-reinforced polymer (GFRP) sheets. The failure mode, load-deflection, ductility index, and separation load predictions according to the GFRP reinforcement thickness were tested and analyzed. The failure mode was found to occur at the bonded surface of the specimen with 10 layers of GFRP reinforcement. For the load-deflection curve, as the reinforcement thickness of the GFRP sheet increased, the crack load and ultimate load greatly increased, and the ductility index was found to be the highest for the beam with the thickness of the GFRP sheet at 10 layers (6 mm) or 13 layers (7.3 mm). The calculated results of separation load were found to match only the experimental results of the specimens where debonding occurred. The reinforcement effect was found to be most excellent in the polymer concrete with 10 layers of GFRP sheet reinforcement. The appropriate reinforcement ratio for the GFRP concrete beam suggested by this study was a fiber-reinforced-plastic cross-sectional ratio of 0.007-0.008 for a polymer concrete cross-sectional ratio of 1 (width) : 1.5 (depth).

show abstract

Performance of reinforced concrete beams strengthened by hybrid FRP laminates

Cited by 66 publications

References 2 publications

Flexural Strengthening of RC Continuous Beams Using Hybrid FRP Sheets

Flexural Strengthening of RC Continuous Beams Using Hybrid FRP Sheets

Long-Term Behavior of RC Beams Strengthened with Hybrid Composite Beam

Flexural behavior of methyl methacrylate modified unsaturated polyester polymer concrete beams reinforced with glass‐fiber‐reinforced polymer sheets

Contact Info

Product

Resources

About