Confinement effects of different retrofitting materials on the axial strength of reinforced concrete columns

Lejano, Bernardo A.

doi:10.1109/hnicem.2014.7016219

Cited by 3 publications

(2 citation statements)

References 1 publication

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“…To improve its strength, it may be encased with layer (or jacket) of mortar or shotcrete [10]. The effect of the jacket is two-fold, it enlarges the cross-section of the column and it provides confinement to the original core concrete.…”

Section: Retrofitting Using Frmmentioning

confidence: 99%

“…This paper focuses on the simulation of the load-carrying capacity of RC columns with the above-mentioned jacketing materials (SFRM and PFRM). Previous work of the author [10] reported test results on the use of similar retrofitting materials but lacks the model to simulate the behavior of RC columns retrofitted with jackets. This paper attempts to provide a simple model that can predict the axial strength of RC columns retrofitted with FRM jackets once the confinement effect is determined.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Different Fiber Reinforced Mortar as Retrofitting Materials for Rc Columns

Lejano¹

2017

GEOMATE

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ABSTRACT:This study is about the use of fiber reinforced mortar (FRM) as a jacketing material for reinforced concrete (RC) columns. Presented in this paper are analyses of the test results of destructiveloading that were conducted to explore the applicability of different jacketing materials as retrofit to RC columns. The jackets used to wrap RC columns were built of mortar mixed with different fibers. The fibers considered were steel fibers and polymer fibers. A simple model based on material properties was used to simulate the axial strength of the columns. The numerical model calculation results as well as the experimental test results were used to assess the performance of the jacketing materials used. The experimental part consisted of testing two sets of column specimens. The first set is wrapped with mortar jackets reinforced with steel fibers and the second set is wrapped with mortar jackets reinforced with polymer fibers with and without fly ash. The efficacy of the different FRM jackets as retrofitting materials was assessed by calculating the effect of confinement. The calculation was accomplished by measuring the maximum load of the retrofitted columns with jackets and then subtracting the load that can be carried by the control specimens, that is, the column with the original cross section. The confining effect was used as the basis in determining the confined compressive strength of concrete and then used to establish a model that can simulate the axial strength of the columns. The results indicate that the FRM jackets are effective as retrofitting material for RC column.

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Section: Retrofitting Using Frmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of Different Fiber Reinforced Mortar as Retrofitting Materials for Rc Columns

Lejano¹

2017

GEOMATE

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Potential of High Density Polyethylene on axial strength enhancement of reinforced concrete columns

Dines

Kumar

2020

Materials Today: Proceedings

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Numerical Modeling of Effect of Type of Confinement to Behaviour of Columns Subjected to Earthquake Loading

Taşkin

Okay

2019

Mühendislik Bilimleri Ve Tasarım Dergisi

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Kolonlar deprem etkisi altında tersinir ve tekrarlı yüklere maruz kalan eksenel yük elemanlarıdır. Bu karmaşık yükleme durumu etkisinde kolonların davranışının analizi oldukça önemli hale gelmektedir. Deprem sonrası göçme veya ağır hasara uğramış yapılarda, oluşan hasarların kolon sargılama eksikliklerinden kaynaklandığı görülmüştür. Bu sebeple sargılamanın kolon davranışına olan etkisi araştırmacıların ilgisini çeken önemli konular arasında yer almaktadır. Bu çalışmada, sargı tipinin kolon davranışına etkisini inceleyen Saatçioğlu ve Özcebe (1989) tarafından yapılmış kolon deneyleri numune olarak seçilerek, açık kaynak kodlu sonlu elemanlar programı OpenSees ile seçilen kolonların sayısal analizi yapılmıştır. Sayısal analiz yapılırken numuneleri doğru temsil edecek eleman ve malzeme modelleri seçilmiştir. Oluşturulan sayısal modeller deprem yükleri etkisi altında analiz edilmiş, elde edilen sonuçlar mevcut deneysel çalışmanın sonuçları ile karşılaştırılmış ve sonuçların birbiri ile uyumlu olduğu görülmüştür.

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Confinement effects of different retrofitting materials on the axial strength of reinforced concrete columns

Cited by 3 publications

References 1 publication

Evaluation of Different Fiber Reinforced Mortar as Retrofitting Materials for Rc Columns

Evaluation of Different Fiber Reinforced Mortar as Retrofitting Materials for Rc Columns

Potential of High Density Polyethylene on axial strength enhancement of reinforced concrete columns

Numerical Modeling of Effect of Type of Confinement to Behaviour of Columns Subjected to Earthquake Loading

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