Experimental and numerical analysis of RC two-way slabs strengthened with NSM CFRP rods

Forêt, Gilles; Limam, Oualid

doi:10.1016/j.conbuildmat.2007.07.027

Cited by 67 publications

(22 citation statements)

References 12 publications

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“…There are different techniques available for retrofitting and strengthening of different reinforced concrete structural elements including cement grout, epoxy injection, fibre reinforced polymers, ferrocement and steel plates. The selection of a suitable method for repairing depends on many factors, such as amount of damage, repair material, construction cost and time (Mervyn et al 1999, Thanoon et al 2005, Foret and Limam 2008, Maaddawy and Soudki 2008.…”

Section: Introductionmentioning

confidence: 99%

Strengthening of lightweight reinforced concrete slabs using different techniques

Shbeeb

Al-Akhras

Shannag

et al. 2012

The IES Journal Part A: Civil & Structural Engineering

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The present study examines the potential of using four different techniques in repairing and strengthening of preloaded, cracked, lightweight, reinforced concrete one-way solid slabs. Nineteen lightweight reinforced concrete (LWRC) slabs specimens were casted with one-third scale dimensions from prototype structure in buildings. The slabs dimensions were 1.2 m in length and cross section of (70 6 500) mm in depth and width. The slabs were reinforced with 3f10 for the main reinforcement and tested under a four-point loading system. The tested slabs were divided into two groups according to preloading level to study the effect of cracking level. Two preloadings were selected, i.e. 60% and 80% from the ultimate load. The strengthening techniques used were ferrocement layer, steel plate, carbon fibre reinforced polymers (CFRP) sheets and CFRP strips. The slabs were loaded up to failure and the structural response of each slab specimen was predicted in terms of the onset of cracking, deflection, collapse load and failure mode. The efficiency of different repair and strengthening techniques and their effects on the structural behaviour of cracked concrete slab had been analysed. It was observed that the type of strengthening technique used affect the load carrying capacity, deflection, stiffness and toughness of the slab. All repair techniques were found to be able to restore and enhance the structural capacity of cracked concrete slabs. The enhancement ratio is found to be affected by the preloading or the cracking level.

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Section: Introductionmentioning

confidence: 99%

Strengthening of lightweight reinforced concrete slabs using different techniques

Shbeeb

Al-Akhras

Shannag

et al. 2012

The IES Journal Part A: Civil & Structural Engineering

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show abstract

“…Smith and Kim [3] than the unstrengthened controlled specimens. Laboratory studies are reported by Ola Enochsson et al [4], L.Michel et al [5], Agbossou et al [6] and Gilles Foreta and OualidLimam [7]. The advantage is primarily the resistance of FRP to corrosion, a property that is particularly important in this case due to the position of the rods very close to the surface.…”

Section: Research Significancementioning

confidence: 98%

Strengthening of Rc Slab With Multiple Opening by NSM Technique

Panditi¹,

Banoth²

2018

IJETED

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This paper presents the Near Surface Mounted (NSM) FRP rods are now emerging as a promising technique, in addition to externally bonded FRP laminates, for increasing flexural and shear strength of RC members. Introducing openings in existing reinforced concrete (RC) slabs can severely weaken the slabs due to the cut out of both concrete and reinforcing steel. In this thesis, the use of Glass Fibre Reinforced Polymers (GFRP) strengthening alternatives to restore the flexural capacity of the RC slab after having multiple openings in the slab have been studied.

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“…Foret and Limam [17] developed a 2-D finite element linear model for analysis of composite orthotropic plates, while the model could only describe the elastic behavior of RC slabs strengthened with FRP rods. Nour et al [18] conducted the nonlinear analysis of concrete slabs with internal FRP bars using the commercial software of ABAQUS.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear finite element analyses of FRP-reinforced concrete slabs using a new layered composite plate element

Zhu¹,

Zhang

2010

Comput Mech

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A simple and shear-flexible rectangular composite layered plate element and nonlinear finite element analysis procedures are developed in this paper for nonlinear analysis of fiber reinforced plastic (FRP)-reinforced concrete slabs. The composite layered plate element is constructed based on Mindlin-Reissner plate theory and Timoshenko's composite beam functions, and transverse shear effects and membranebending coupling effects are accounted for. Both geometric nonlinearity and material nonlinearity of the materials, which incorporates tension, compression, tension stiffening and cracking of the concrete, are included in the new model. The developed element and the nonlinear finite element analysis procedures are validated by comparing the computed numerical results of numerical examples with those obtained from experimental investigations and from the commercial finite element analysis package ABAQUS. The element is then employed to investigate the nonlinear structural behavior and the cracking progress of a clamped two-way FRP-reinforced concrete slab. The influences of reinforcement with different materials, ratio and layout in tension or compressive regions on structural behavior of the clamped slabs are investigated by parametric studies.

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Experimental and numerical analysis of RC two-way slabs strengthened with NSM CFRP rods

Cited by 67 publications

References 12 publications

Strengthening of lightweight reinforced concrete slabs using different techniques

Strengthening of lightweight reinforced concrete slabs using different techniques

Strengthening of Rc Slab With Multiple Opening by NSM Technique

Nonlinear finite element analyses of FRP-reinforced concrete slabs using a new layered composite plate element

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