Analysis of steel/concrete interfacial shear stress by means of pull out test

Bouazaoui, Loubna; Li, A.

doi:10.1016/j.ijadhadh.2007.02.006

Cited by 53 publications

(26 citation statements)

References 10 publications

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“…Direct characterisation of reinforcement/concrete interface bond strength is tedious work and requires specific devices such as pull-out tests [35,36] and a wide range of samples especially when dealing with natural fibres such as cellulose fibres [37], coconut fibres [28] and coconut rope-concrete [3]. Concerning pull-out experiments on fibre-reinforcements, the samples consisted of beams and the fibre's direction was not controlled in the mineral matrix.…”

Section: Introductionmentioning

confidence: 99%

A novel pull-out device used to study the influence of pressure during processing of cement-based material reinforced with coir

Lecompte

Perrot

Subrianto

et al. 2015

Construction and Building Materials

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Section: Introductionmentioning

confidence: 99%

A novel pull-out device used to study the influence of pressure during processing of cement-based material reinforced with coir

Lecompte

Perrot

Subrianto

et al. 2015

Construction and Building Materials

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“…In order to examine the effect of rebar size on failure temperature, an analytical model for adhesive bonding between steel rebar and concrete interface at elevated temperature is presented herein based on the work of Bouazaoui and Li [4]. The proposed model accounts for the effect of varying temperature on the epoxy resin's modulus.…”

Section: A Mechanical Model For Adhesive Bond Stress At Elevated Tempmentioning

confidence: 99%

“…Among many applications, epoxy resins are used to bond steel rebars into existing cast-in-place or precast concrete structures. Previous studies have shown the advantage of concrete/steel bonds using epoxy resins in terms of higher bond strength compared with mechanical steel-to-concrete anchors [4,5]. The bond strength at normal temperature is affected by many parameters such as concrete strength [6,7], epoxy type [8], embedded length [9] and environmental condition [10].…”

Section: Introductionmentioning

confidence: 99%

Effect of Diameter on Bond Failure of Steel Rebar Embedded into Concrete Using Epoxies at High Temperatures

Pothisiri¹,

Jongvivatsakul²,

Horsangchai³

et al. 2018

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A series of pull-out tests were conducted to examine the bond deterioration of epoxy resins at elevated temperatures through the relationship between the critical temperature and bond stress. The steel rebars investigated were deformed bars with varying diameters of 12 mm, 16 mm, 20 mm and 25 mm. Two different types of epoxy resins were used. The test results show that the critical temperature for both types of epoxy resins tends to decrease with the increasing bond stress. In addition, the critical temperature is significantly lower for steel rebar with larger diameters. Meanwhile, the effect from varying types of epoxy resins on the bond characteristics is negligible. In order to illustrate the effect of rebar size, a mechanical model for the adhesive bonding stress between steel rebar and concrete interface at elevated temperatures is presented. The model provides good prediction of the bond stress at failure temperature.

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“…The epoxy resin was found to be a very effective structural bonding agent, with a significant reduction in anchoring lengths for bonded bars of: 24% for bars where d=10mm; 42% for bars in which d=12.5 mm, and 29% for bars where d=16mm. Bouazaoui et al [8] studied the interfacial shear strength between the steel bar surface and the concrete surface of steel rods that were previously bonded with epoxy resin into concrete using confined pullout test. The concrete specimen was a cylinder with a diameter of 160 mm and a length of 320mm.…”

Section: Figurementioning

confidence: 99%

Pullout performance of steel bars partially bonded in concrete with epoxy resin

Souza

Tavares

Fernandes

2018

Rev. IBRACON Estrut. Mater.

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The installation of new reinforcing bars onto an existing structure is a common practice in civil construction both for old and new structures. The use of anchors has been extensively studied and normalized. The placement of steel reinforcement bars in holes filled with epoxy resin, despite their wide use, still lacks a satisfactory methodology for the design of such systems. In this context, the aim of this paper is to present the results of an experimental programme for confined pullout tests, comparing the performance of cast steel reinforcement bars to that of bars bonded to concrete with epoxy resin. The investigated test parameters included the bar diameter, the embedment length and the resin thickness. Tests results showed a significant efficiency of epoxy resin as structural bonding agent and allowed the verification of sizeable reduction in the anchorage lengths for bonded bars.

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Analysis of steel/concrete interfacial shear stress by means of pull out test

Cited by 53 publications

References 10 publications

A novel pull-out device used to study the influence of pressure during processing of cement-based material reinforced with coir

A novel pull-out device used to study the influence of pressure during processing of cement-based material reinforced with coir

Effect of Diameter on Bond Failure of Steel Rebar Embedded into Concrete Using Epoxies at High Temperatures

Pullout performance of steel bars partially bonded in concrete with epoxy resin

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