Flexural behavior of HSFRC with low reinforcement ratios

Dancygier, Avraham N.; Savir, Z.

doi:10.1016/j.engstruct.2006.02.005

Cited by 89 publications

(54 citation statements)

References 5 publications

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“…7) after yield of steel rebar. Similar crack patterns could also be found in the literatures [22][23][24]. Compared to beams without steel fibers, reduced deflection can be obtained at the same load level with the addition of steel fibers.…”

Section: Cracking Behaviorsupporting

confidence: 81%

“…The major aim of this program is to evaluate the possibility of partially replacing the longitudinal reinforcements by macro steel fibers, and to study the effect of steel fiber on the ultimate flexural strength, steel reinforcement strain, midspan deflection and crack pattern of reinforced SCC beams. Interesting crack pattern that only one large crack developed in pure bending section of SFRSCC beam after yield of steel rebar was observed, which could also be found in literatures [22][23][24]. A prediction model is also developed for predicting the ultimate flexural capacity of the SFRSCC beams.…”

Section: Introductionmentioning

confidence: 76%

“…Fiber type To extend the validity of the suggested method for the ultimate flexural capacity of SFRC beams, the prediction was also made for beams that had been tested in previous studies [23,40,41]. The dimensions and properties are summarized in Table 7.…”

Section: Investigator Specimenmentioning

confidence: 99%

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Experimental study and prediction model for flexural behavior of reinforced SCC beam containing steel fibers

NING

Ding

Zhang

et al. 2015

Construction and Building Materials

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h i g h l i g h t sFibers are added for enhancing the ultimate flexural capacity of reinforced SCC beam. Using steel fibers to partially replace conventional steel rebar is feasible. One large crack developed in pure bending section of SFRSCC beam after yield of steel rebar. The suggested model for estimating ultimate moment of SFRSCC beam agrees well with test data. a b s t r a c tSeven full-scale steel fiber reinforced self-consolidating concrete (SFRSCC) beams were tested to study the effects of macro steel fibers on the flexural behavior of reinforced self-consolidating concrete beams. The major test variables are fiber contents and longitudinal reinforcement ratios. The ultimate load, midspan deflections, steel reinforcement strains, crack width and crack spacing were investigated. The enhanced ultimate flexural capacity and reduced midspan deflection due to the addition of steel fibers were observed. With the increasing of fiber contents, the strain in longitudinal reinforcement, crack width and crack spacing decreased significantly. The possibility of using steel fibers for partial replacement of the conventional longitudinal reinforcement is estimated, which is meaningful for extending the structural application of SFRSCC. A method incorporating fiber contribution to the post-cracking tensile strength of concrete in the flexural analysis of SFRSCC beam is also suggested. Comparisons are made between the suggested model and the fib Model Code 2010 model with experimental data. The results showed that the suggested model can estimate ultimate flexural capacity accurately.

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Section: Cracking Behaviorsupporting

confidence: 81%

Section: Introductionmentioning

confidence: 76%

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Experimental study and prediction model for flexural behavior of reinforced SCC beam containing steel fibers

NING

Ding

Zhang

et al. 2015

Construction and Building Materials

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“…Ancak bu tür betonların betonarme elemanlarda kullanımı ile ilgili çalışmalar kısıtlıdır. Yapılan çalışmalarda bu betonların geleneksel donatılı betonarme kiriş elemanlarda kullanımının önemli avantajlar sağlama potansiyeli rapor edilmiştir (Kamal et al 2014;Yang et al 2010;Stürwald and Fehling 2012;Dancygier and Savir 2006;Bertram and Hegger 2008;Voo et al 2010 …”

Section: Introductionunclassified

Effective Steel Fiber Type Investigation on Ultra High Performance Fiber Reinforced Concrete Beams

Türker¹,

Birol²,

Yavaş³

et al. 2016

AKU-J. Sci. Eng.

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Anahtar kelimelerUltra yüksek performanslı lifli beton; Çelik lif; Betonarme kiriş; Eğilme davranışı. ÖzetÇalışmada, ultra yüksek performanslı lifli beton içeren betonarme kirişlerde eğilme davranışı bakımından etkin çelik lif tipinin deneysel olarak incelemesi yapılmıştır. Bunun için biri lifsiz, diğer dördü farklı çelik lif tipi içeren beş adet 100x150x1500 mm boyutlarında kiriş üzerinde eğilme testleri gerçekleştirilmiştir. Çalışmada 120 MPa üzeri basınç dayanımına sahip, hacimce %1.5 oranında çelik lif içeren beton kullanılmıştır. Lif olarak düz mikro lif tipi (F6), iki adet tek kancalı makro lif tipi (F30 ve F60_1) ve bir adet çift kancalı lif tipi (F60_2) incelenmiştir. Eğilmede etkin çelik lif tipi değerlendirmesi yerdeğiştirme süneklikleri, yük taşıma kapasiteleri ve çatlak özelliklerine göre yapılmıştır. Çalışmada elde edilen sonuçlardan; yük taşıma kapasitesi ve çatlakları sınırlandırma bakımından çift kancalı makro lifin (F60_2), yerdeğiştirme sünekliği bakımından ise düz mikro lifin (F6) en etkin lif olduğu belirlenmiştir. Effective Steel Fiber Type Investigation on Ultra High Performance Fiber Reinforced Concrete BeamsKeywords Ultra high performance fiber reinforced concrete; Steel fiber; Reinforced concrete beam; Flexural behavior. AbstractThis study investigates the effective steel fiber type on ultra high performance fiber reinforced concrete beams with respect to flexural behavior. Five 100x150x1500 mm reinforced concrete beams, one is non-fiber and the others include four different steel fiber types, were tested in flexure. The concrete used in this study had compressive strength over 120 MPa and included 1.5% steel fibers by volume. Two types of hooked macro steel fibers (F30 and F60_1), double hooked macro (F60_2) and straight micro (F6) steel fibers were investigated. Evaluation of the effective steel fiber type on the flexural behavior were performed in terms of displacement ductility, load bearing capacity and cracking behavior. From the results of the study, it is determined that the most effective steel fiber for load bearing capacity and cracking control is double hooked steel fiber (F60_2) and most effective fiber for displacement ductility is straight micro fiber (F6).

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“…In the design of concrete structures, such as concrete pavement, bridge, and building structures, flexural strength must be taken into account. Owing to the importance of flexural strength, some researchers paid close attention to the flexural behavior of concrete materials [1][2][3][4]. Under the environment of seawater, the durability of concrete structures will decrease, because the attenuation of modulus, compressive strength, and flexural strength of concrete material [5].…”

Section: Introductionmentioning

confidence: 99%

Variation of flexural strength of cement mortar attacked by sulfate ions

Zhang

Jiang

Chen

2008

Engineering Fracture Mechanics

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a b s t r a c tUnder the environment of seawater, durability of concrete materials is one of the chief factors considered in the design of structures. The decrease of durability of structures is induced by the evolution of micro-damage due to the erosion of chlorine and sulfate ions, which is characterized by the reduction of modulus, strength, and toughness of the material. In this paper, the variation of the flexural strength of cement mortar under sulfate erosion is investigated. The results obtained in present work indicate that the erosion time, concentration of sulfate solution, and water-to-cement ratio will significantly affect the flexural strength.Crown

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Flexural behavior of HSFRC with low reinforcement ratios

Cited by 89 publications

References 5 publications

Experimental study and prediction model for flexural behavior of reinforced SCC beam containing steel fibers

Experimental study and prediction model for flexural behavior of reinforced SCC beam containing steel fibers

Effective Steel Fiber Type Investigation on Ultra High Performance Fiber Reinforced Concrete Beams

Variation of flexural strength of cement mortar attacked by sulfate ions

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