Behaviour of Slurry Infiltrated Fibre Concrete (SIFCON) under triaxial compression

Farnam, Yaghoob; Moosavi, M.; Shekarchi, Mohammad; Babanajad, Saeed; Bagherzadeh, A.

doi:10.1016/j.cemconres.2010.06.009

Cited by 113 publications

(28 citation statements)

References 9 publications

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“…9-fold increase in flexural strength was observed compared to the control sample. This results are similar with literaute (Farnam et al, 2010). They indicated that SIFCON's fracture energy can achieve 300-fold of fracture energy of traditional concrete while its tensile strength can achieve 7-15-fold of tensile strength of traditional concrete.…”

Section: Discussionsupporting

confidence: 86%

Research on effect of the quantity and aspect ratio of steel fibers on compressive and flexural strength of SIFCON

Soylu¹,

Bingöl²

2019

CJSMEC

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SIFCON (Slurry Infiltrated Fiber Reinforced Concrete) is a composite which occur hardening of the matrix phase, consists of cement, water, mineral additives, fine sand, water reducing plasticizer, and reinforced with high volume fiber (5–20%). The main difference from the high strength concrete (HSC) is the ductile behaviour at failure. However, the brittleness increases with the strength increase in HSC, SIFCON has a ductile behaviour because of the high volume fiber content, low permeability, high durability. Despite fiber content is 2-3% in fiber reinforced concrete, fiber content may be ten times more in SIFCON and ductility is gained. This concrete is suggested to be used in military buildings against explosion, industrial grounds, airports, and bridge feet. In this study, in order to investigate the compressive and flexural strengths of SIFCON, the aspect ratio and fiber volume of steel fibers were chosen as variable and the effects of these parameters on compressive and flexural strengths were investigated. In the study, steel fibers with aspect ratio of 40, 55, 65, and 80 were used in 0, 4, 8 and 12% ratios. The water/binder ratio was kept constant at 0.35. Silica fume is used 10% and water-reducing plasticizer is used 1.5% of cement by weight. 7 and 28 days cured samples were subjected to compressive and flexural tests and the results were compared. As a result of the tests carried out, increases in both the compressive and flexural strengths of SIFCON specimens were determined with increasing fiber volume up to 8%. Strength reductions were observed at higher ratios. In cases where the fiber volume is too high, it has been seen that the strengths were decreased. The reason of strength reduction can be explained by the difficulty of passing ability of mortar between the fibers. The highest strengths were obtained from fibers with the aspect ratio of 80. Increase in the aspect ratio as well as increases in compressive and flexural strengths have been found.

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Section: Discussionsupporting

confidence: 86%

Research on effect of the quantity and aspect ratio of steel fibers on compressive and flexural strength of SIFCON

Soylu¹,

Bingöl²

2019

CJSMEC

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“…In traditional fiber reinforced concrete, the volume of fiber is usually limited to 1-3%, owning to the difficulties of placing emerged from the effect of interlocking of high amount of fibers. To produce high-performance concrete with high fiber content and to avoid mixing and packing difficulties, a new type of concrete was produced by Lankard in 1979 called slurry infiltrated fiber concrete (SIFCON) [1][2][3][4][5]. It is a comparatively new material which varies from normal fiber reinforced concrete in respects of composition and fabrication.…”

Section: Introductionmentioning

confidence: 99%

Effects of Steel Fibers Geometry on the Mechanical Properties of SIFCON Concrete

2020

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This research aims to shed light on the effect of steel fiber shape, length, diameter, and aspect ratio on the mechanical properties of slurry infiltration fiber reinforced concrete (SIFCON). This study comprised of casting and testing three groups of SIFCON specimens with 6% fiber volume fraction. The first group was reinforced with micro steel fiber, other reinforced by hook end steel fibers, while the last group of specimens reinforced by mixing two shape of steel fiber as hybrid fiber (3% micro steel fiber +3% hook end steel fiber). Silica fume was used as a partial replacement (10%) by weight of cement. 3.7% super plasticizer was used to make the slurry liquid enough to penetrate through the fiber network, while the w/c ratio kept constant at 0.33. It was found from the results achieved that the compressive strength, static modulus of elasticity, splitting tensile strength and toughness are extremely affected by the geometry of fibers because the network of fibers formed and their density depends on the size and shape of fibers. Where the values of micro steel fibers are far outweighing the values of hooked end fibers. It was also deduced from empiricism results that combining long and short fibers gives excellent results.

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“…Araştırmacılar tarafından SIFCON beton kullanarak betonarme kirişlerin kayma etkisine karşı onarımı ve güçlendirilmesi [6], atık lastiklerinden elde edilen çelik lifler kullanılarak üretilen SIFCON betonun performansının değerlendirilmesi [7] ve SIFCON levhaların darbe etkisindeki davranışı [8] deneysel olarak araştırılmıştır. Reaktif pudra betonu ve SIFCON betonun birlikte kompozit olarak tasarlanması ve sıkıştırma basıncı uygulanması [9], silindir beton numunelerin GFRP kumaşla sarılması ile SIFCON ile güçlendirilmesinin karşılaştırılması [10], SIFCON matrisindeki tek çelik lifin çekme davranışının belirlendiği [11] ve üç eksenli basınç altında SIFCON betonun davranışı [12] konularında yapılmış çalışmalar mevcuttur. Sıcaklık etkisinde SIFCON betonun eğilme davranışı incelendiği çalışmada [13] standart veya buharla kür edilmiş SIFCON beton numuneleri 300, 600, 750 ve 900 C o 'ye tabi tutulmuştur.…”

Section: Introductionunclassified

Farklı Sıcaklıkların SIFCON Betonunun Mekanik özeliklerine Etkisinin İncelenmesi

Aydın¹

2019

acperpro

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&Ccedil;imento, silis dumanı, kuvars kumu ile birlikte &ccedil;ok miktarda &ccedil;elik liflerin bulunduğu, y&uuml;ksek eğilme dayanımı, s&uuml;neklik ve tokluk &ouml;zeliklerine sahip SIFCON betonlar yeni nesil yapı malzemelerindendir. SIFCON bu &ouml;zeliklerinden dolayı askeri yapılar ve sığınaklar gibi y&uuml;ksek enerji yutma kapasitesine sahip yapılarda kullanılmasından dolayı yangın ve patlama gibi sebeplerden dolayı y&uuml;ksek sıcaklığa maruz kalabilmektedirler. Bu &ccedil;alışmada SIFCON betonların y&uuml;ksek ve d&uuml;ş&uuml;k ısılarda basın&ccedil; ve eğilme davranışları incelenmiştir. Hacimce &ccedil;elik lif oranı %24 olan 10 adet k&uuml;p (100x100x100 mm) ve 10 adet kiriş (74x74x500 mm) SIFCON numuneleri &uuml;retilmiştir. Gerekli k&uuml;r işlemleri yapıldıktan sonra -35, +22, +100, +200, +300 ? derecelerdeki ısıların etkisinde eğilme ve basın&ccedil; davranışları belirlenmiştir. Kiriş numunelerin y&uuml;k-sehim grafikleri &ccedil;izilerek eğilme dayanımı, kırılma tokluğu değerleri belirlenmiş ve k&uuml;p numunelerinin ise basın&ccedil; dayanımları karşılaştırılmıştır.

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Behaviour of Slurry Infiltrated Fibre Concrete (SIFCON) under triaxial compression

Cited by 113 publications

References 9 publications

Research on effect of the quantity and aspect ratio of steel fibers on compressive and flexural strength of SIFCON

Research on effect of the quantity and aspect ratio of steel fibers on compressive and flexural strength of SIFCON

Effects of Steel Fibers Geometry on the Mechanical Properties of SIFCON Concrete

Farklı Sıcaklıkların SIFCON Betonunun Mekanik özeliklerine Etkisinin İncelenmesi

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