External FRP Poststrengthening of Scaled Concrete Slabs

Seim, Werner; Hörman, Matthias; Karbhari, Vistasp M.; Seible, Frieder

doi:10.1061/(asce)1090-0268(2001)5:2(67)

Cited by 63 publications

(13 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Two-main analysis approaches can be adopted in analysing FRP-RC composite sections; the classical analysis theories and the numerical analysis. The first approach, which is adopted in most of the available codes [10][11][12][13] for FRP strengthening applications, involves solutions of 'simple' design equations based on closed form solutions [14]. These formulae are usually accompanied with some provisions to control deflection and cracking.…”

Section: Introductionmentioning

confidence: 99%

Punching behaviour of column-slab connection strengthened with non-prestressed or prestressed FRP plates

Abdullah

Bailey

2018

Engineering Structures

View full text Add to dashboard Cite

Fracture resistance of concrete column-slab connections, with low reinforcement ratios and strengthened by carbon fibre reinforced polymer (CFRP) plates, is often governed by debonding failure modes. In this paper, a three-dimensional finite element model is conducted to predict the punching behaviour of concrete column-slab connections which incorporate bonded non-prestressed and prestressed CFRP plates to the tension surface of the slab. The adopted interfacial behaviour, between the FRP materials and concrete, takes into account the effect of mixed mode behaviour on the displacement fields at the critical diagonal cracks (CDC). Results are then presented in terms of the ultimate load capacities, load-strain relationships in the FRP and internal steel reinforcement, load-interfacial stress relationships, and stress distributions in the FRP reinforcement. It can be stated that by adopting the mixed mode behavior at the interface between the fibres and concrete, the onset of debonding is effectively captured by the FE analysis, which is very difficult in a laboratory test.

show abstract

Section: Introductionmentioning

confidence: 99%

Punching behaviour of column-slab connection strengthened with non-prestressed or prestressed FRP plates

Abdullah

Bailey

2018

Engineering Structures

View full text Add to dashboard Cite

show abstract

“…Based on the test results, a simple and effective method was identified where the GFRP strips were anchored into the walls through horizontal slots and onto the slab using fiber anchors. Seim et al [12] studied experimentally the effect of prefabricated FRP strips and fabric on the behavior of reinforced concrete one-way slabs. They concluded that failure is associated with a drastically reduced deformation capability and a change from the conventional ductile mode of failure to a more brittle one.…”

Section: Introductionmentioning

confidence: 99%

Deformation Behavior of Reinforced Concrete Two-Way Slabs Strengthened with Different Widths and Configurations of GFRP

Izadi

Behbahani

2017

CivileJournal

View full text Add to dashboard Cite

In this paper, we conducted a numerical analysis of the deformation behavior of Steel-reinforced concrete (RC) two-way slabs strengthened by glass fiber reinforced polymer (GFRP) with different widths and configurations. A total number of 36 RC slabs of 12 × 300 × 300 cm were used in this numerical study. Also, a column of 30 × 30 was considered in the center of the slab for applying static loading. The bonded GFRP strips had 5, 7.5 and 10 cm width (W) and configured in three models called PM1, PM2, and DM. In PM1 (strip length = 2.4 m) and PM2 (strip length =1.7 m) configurations, the strips were bonded in two directions parallel to the sides of the slab, while in DM configuration (strip length =1.7 m), strips were rotated with 45 degree angle around the central axis that is perpendicular to the surface of the slab. According to the comparison results, we found out that the 5-cm wide strips with PM1 configuration having a parallel space of 0.5 times the strip width (0.5 ) greatly reduced the deformation of RC two-way slab compared to other strip widths and configurations, while 10 strips under all configurations, highly increased the deformation when space between strips varied from 1.5 to 2 .

show abstract

“…The most widely used are the introduction of additional longitudinal reinforcement, with or without a section increase [1], strengthening by means of epoxy-bonded steel plates [2][3][4] or fibre reinforced polymers (FRP) [5][6][7], strengthening by replacing concrete with a higher grade concrete or fibre reinforced concretes [8,9], strengthening using concrete collars [10] or steel collars [8,10] and strengthening by introducing new shear reinforcements [8,[10][11][12][13][14]. These techniques are known as 'passive' since the strengthening system is only mobilized when new deformations appear.…”

Section: Introductionmentioning

confidence: 99%