A Reevaulation of Test Data on Development Length and Splices

Orangun, C. O.; Jirsa, James O.; Breen, J E

doi:10.14359/10993

Cited by 114 publications

(25 citation statements)

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“…The theoretical bond stress τcal, was determined from a semiempirical statistical regression equation developed in [13].…”

Section: Theoretical Bond Stress τCalmentioning

confidence: 99%

“…The bond strength equation in (9) and (10) proposed in [13] have been widely discussed, [15] accepted and used as reference by various researchers since it was published.…”

Section: Theoretical Bond Stress τCalmentioning

confidence: 99%

“…Thus, the bond strength equation proposed in [13] was adopted as the formula for theoretical bond stress, [13] adopted theoretical bond stress equation formed the basis of the bond strength equation in the 1995 and 2002 American Concrete Institute (ACI) codes [16].…”

Section: Theoretical Bond Stress τCalmentioning

confidence: 99%

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Influence of Stirrups on Overlap Splice Strength of Epoxy Coated Deformed Bars

Osifala¹,

Akeju²

2017

Construction Science

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This paper reports the effect of transverse reinforcement on tensile reinforcement splice strength of epoxy coated reinforcing bars. Thirty six (36) full size beams of varying lengths and sectional dimensions with lap spliced bars in constant moment region were cast and tested in a four point bending system. The beams were cast with three high yield diameter bars, namely 16 mm, 20 mm and 28 mm. 8 mm and 10 mm diameter high yield stirrups were introduced over the lap in an attempt to study the effect of stirrups on bond performance of epoxy coated reinforcing bars. The ultimate moment from the tests were used to determine the stress developed in the steel rods. The ratios of the test bond stresses and bond stress values using the tensile reinforcement yield stress τt/τy were used for comparison of the parameter under investigation. Transverse reinforcement was found to increase the splice strength of epoxy coated reinforcing bars and the larger the diameter of stirrup the better the improvement of the bond efficiency.

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“…The theoretical bond stress τcal, was determined from a semiempirical statistical regression equation developed in [13].…”

Section: Theoretical Bond Stress τCalmentioning

confidence: 99%

“…The bond strength equation in (9) and (10) proposed in [13] have been widely discussed, [15] accepted and used as reference by various researchers since it was published.…”

Section: Theoretical Bond Stress τCalmentioning

confidence: 99%

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Influence of Stirrups on Overlap Splice Strength of Epoxy Coated Deformed Bars

Osifala¹,

Akeju²

2017

Construction Science

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“…Pull-out test results presented in Table 3 are compared with the equations of ACI 408 [9], fib-2010 [20] and equation given by Orangun et al [21] on which the famous design equation of ACI-318 [7] for development length is based. This is done to find out their effectiveness in estimating bond strength of NWFC specimen because of the fact that these equations are derived from experimental results that were mostly performed on concretes containing no fibers Table 3 presents test results and prediction by these equations (Eqs.…”

Section: Estimation Of Bond Strengthmentioning

confidence: 99%

Bond of Reinforcement with Normal-weight Fiber Reinforced Concrete

Ali

Iqbal

Holschemacher

et al. 2016

Period. Polytech. Civil Eng.

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“…It was also adopted by the CEB-FIP Model Code 90 (CEB-FIP 1993) and was used as a base model for many bond-slip laws extended to simulate the behaviour in Polymer Fiber Reinforced concrete (Rossetti et al 1995;Cosenza et al 1997;Lin and Zhang 2014). On the other hand, bond-slip behaviour of beam splices, typically controlled by splitting of concrete cover, has been extensively studied under monotonic and cyclic loadings and many bond-slip laws were developed (Orangun et al 1977;Giuriani 1981;Gambarova et al 1989a;Giuriani et al 1991;Gambarova and Rosati 1996;Rezansoff et al 1997;Esfahani and Rangan 1998;Harajli et al 2004;Harajli 2006;Harajli 2009). Nevertheless, bond-slip relations reported in the literature for concrete controlled by splitting cracking are limited to specific situations such as beam splices, under monotonic loading or under cyclic loading, but with limited slip amplitudes.…”

Section: Introductionmentioning

confidence: 99%

Local bond stress-slip model for reinforced concrete joints and anchorages with moderate confinement

2017

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This paper presents a summary of an experimental investigation and the derivation of a bond-slip model for reinforcing steel embedded in moderately confined concrete under monotonic and cyclic loadings. Moderately confined concrete encompasses the domain between unconfined and well-confined concrete, the limits of which are defined in the paper. The proposed constitutive law adapts and extends the well-known Eligehausen-Filippou law for wellconfined concrete to moderately confined concrete. It is described by an envelope curve and degradation rules. The former is obtained through a confinement index, defined in this study as a function of the amount of confining steel and concrete, distance between confining steel and the rebar and concrete segregation effect. It is proposed to adopt the same degradation rules used for well-confined concrete. These rules are validated through statistical tests for moderately confined concrete. They are found to predict correctly the main features of reduced envelope response under increasing cycling amplitudes but to underestimate response degradation under constant cycling limits for the subsequent cycles to the first cycle. To demonstrate the validity and limitations of the proposed model, its predictions under monotonic loading are compared with experimental results and analytical predictions from other studies.

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A Reevaulation of Test Data on Development Length and Splices

Cited by 114 publications

References 0 publications

Influence of Stirrups on Overlap Splice Strength of Epoxy Coated Deformed Bars

Influence of Stirrups on Overlap Splice Strength of Epoxy Coated Deformed Bars

Bond of Reinforcement with Normal-weight Fiber Reinforced Concrete

Local bond stress-slip model for reinforced concrete joints and anchorages with moderate confinement

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