Workability and Mechanical Performance of Steel Fiber-Reinforced Self-Compacting Concrete with Fly Ash

Gençel, Osman; Brostow, Witold; Datashvili, Tea; Thedford, Michael

doi:10.1163/092764411x567567

Cited by 171 publications

(88 citation statements)

References 24 publications

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“…Thus, incorporation of discrete fibers in vulnerable concrete is useful and effective. The resulting fiber-reinforced concrete exhibits satisfactory resistance to crack formation and propagation [7]. Fig (10).…”

Section: Flexural Strengthmentioning

confidence: 98%

“…Accordingly, the increase in fiber content leads to an increase in the tensile strength of concrete. Moreover, the improved bonding of fiber-matrix that provided by the shape of the steel fiber , hooked ends, boosted pullout strength and thus, yielded high increment in strength due to inclusion of fibers [7] [35]. …”

Section: Splitting Tensile Strengthmentioning

confidence: 99%

“…They improve the performance (strength and toughness) of brittle cement-based materials by bridging cracks, transmitting stress across a crack and counteracting the crack growth [6].The steel fiber is the most common fiber type in the building industry; plastic, glass and carbon fibers contribute to a smaller part to the market [7]. There are various types of steel fibers such as wave cut, end large steel fiber, deformed sheet and also hooked end steel fiber.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Steel Fiber on Some Mechanical Properties of Self Compacting Concrete

AL-Ameeri¹

2013

AJCE

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Self compacting concrete (SCC) is compacting itself alone due to its self-weight and is filled almost completely while flowing in the formwork. In structural members with high percentage of reinforcement ,it fills also completely all voids and gaps. The purpose of presented research is to investigate, the fresh properties of Steel Fiber SCC and the hardened properties. Fresh properties comprising flow ability, passing ability, and viscosity related segregation resistance. Hardened properties comprising compressive strength, splitting tensile strength, flexural strength, modulus of elasticity, and Ultrasonic pulse velocity. The results indicated of the fresh properties of SCC with steel fiber , reduction in workability with increase of steel fiber content. Also the Steel fibers had effect on compressive & tensile strength , modulus of elasticity and ultrasonic pulse velocity of steel fiber self compacting concrete, there was an optimum content of steel fiber at which higher performance obtained at the both mentioned characteristics ,the content was(0.75-1)% . All fiber mixes demonstrated higher splitting tensile strength, and flexural strength relative to plain mix at all curing ages. The strengths increased as the fiber content increased. The fibers slightly decrease the U.P.V followed the same behavior as in compressive strength of SCC.

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Section: Flexural Strengthmentioning

confidence: 98%

Section: Splitting Tensile Strengthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Effect of Steel Fiber on Some Mechanical Properties of Self Compacting Concrete

AL-Ameeri¹

2013

AJCE

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“…Özellikle deprem bölgesinde inşa edilen yapıların kolon, kiriş, döşeme gibi yapı elemanlarında konstrüktif esaslardan dolayı yoğun donatı kullanılmaktadır. Yoğun donatı kullanılan kesitlerdeki betonların yerleşme ve sıkışmasının yeterli düzeyde yapılamaması betonun dayanımını olumsuz etkileyecektir [1,2]. Betondaki bu olumsuzlara çözüm getirmek amacıyla yeni bir beton türü olan kendiliğinden yerleşen betonu (KYB) ortaya çıkarmıştır.…”

Section: Introductionunclassified

Çeli̇k Ve Senteti̇k Li̇fleri̇n Kendi̇li̇ği̇nden Yerleşen Betonlarin Taze Ve Mekani̇k Özelli̇kleri̇ Üzeri̇ne Etki̇si̇

Korkut¹,

Türkmenoğlu²,

Taymuş³

et al. 2017

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

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ÖZKendiliğinden yerleşen beton (KYB), kendi ağırlığı ile herhangi bir vibrasyon gerektirmeksizin, ayrışmaya uğramadan kalıbı doldurabilen özel bir beton türüdür. Bu çalışmada, beton içerisine katılan çelik ve sentetik liflerin kendiliğinden yerleşen betonların taze ve sertleşmiş özellikleri üzerindeki etkileri incelenmiştir. Bu amaçla, biri kontrol olmak üzere toplam 13 farklı beton karışımı hazırlanmıştır. Beton karışımlarının tamamında su/bağlayıcı oranı 0,40 olarak alınmıştır. Çelik ve sentetik lifler beton karışımına hacimce %0,25, 0,50 ve 0,75 oranlarında katılmışlardır. Kontrol betonunun hedef basınç dayanımı 40 MPa olarak belirlenmiştir. Lif katkısının taze beton özelliklerine etkisini belirlemek amacıyla çökme yayılma, V hunisi ve L kutusu deneyleri yapılmıştır. Sertleşmiş beton özelliklerini belirlemek için ise, basınç, yarmada çekme ve eğilme dayanımı deneyleri gerçekleştirilmiştir. Elde edilen sonuçlara göre, lif oranı arttıkça KYB'lerin işlenebilme özelliklerinin oldukça olumsuz yönde etkilendiği belirlenmiştir. Buna ilave olarak, betonun basınç dayanımında sınırlı artışlar olmasına rağmen, betonun yarmada çekme ve eğilme dayanımlarında önemli artışlar meydana gelmiştir.Anahtar Kelimeler: Kendiliğinden yerleşen beton, çelik lif, sentetik lif EFFECT OF STEEL AND SYNTHETIC FIBERS ON FRESH AND HARDENED PROPERTIES OF SELF COMPACTING CONCRETE ABSTRACTSelf-compacting concrete (SCC) is a special kind of concrete that can fill the mold with its own weight without any segregation and requiring any vibration. In this study, the effects of steel and synthetic fibers on fresh and hardened concrete properties of self-compacting concretes were investigated. To this end, one control mix, a total of 13 different concrete mixes were prepared. The water/binder ratio was taken as 0.40 for all mixes. The steel and synthetic fibers were added to the concrete mixes as 0.25, 0.50 and 0.75% by volume. The target compressive strength of the control concrete was determined as 40 MPa. In order to investigate the fresh concrete characteristics, slump flow, V funnel and L box tests were performed. To determine hardened concrete properties, the compressive, splitting tensile and flexural strength tests were performed. It was determined that as the fiber ratio increased, the workability properties of the SCC were adversely affected. In addition to this, although there was a limited increase in the compressive strength of the concrete, significant increases in the tensile and bending strengths of the concrete were obtained.

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“…Further research is needed, especially taking into account the impact of variable physicochemical properties of cement type and mineral additions (e.g. fly ash, silica fume, lime fume) on such concrete mixes.The influence of fibre addition on properties of fresh and hardened concrete mixes was thoroughly described in multiple previous publications [1,2,3,4,5]. In general, the higher the volume of fibre (V f ) added to concrete mix the better the mechanical properties of the hardened composite are.…”

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confidence: 99%

Fresh Mix Characteristics of Self-Compacting Concrete Reinforced by Fibre

Ponikiewski

Katzer

2016

Period. Polytech. Civil Eng.

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An analysis of influence of different types of fibre and fibre content on properties of self-compacting concrete is the main subject of the paper. Presented study is focused on the effect of steel, basalt and polypropylene fibres with different geometrical parameters on workability and self-compacting abilities of fresh mixes. Keywords SCC , self-compacting, cement, rheology, fibre, steel, basalt, polypropylene IntroductionThe current state-of-the-art of concrete technology is not sufficient to effectively shape the workability of self-compacting concrete (SCC) with the addition of fibre. Further research is needed, especially taking into account the impact of variable physicochemical properties of cement type and mineral additions (e.g. fly ash, silica fume, lime fume) on such concrete mixes.The influence of fibre addition on properties of fresh and hardened concrete mixes was thoroughly described in multiple previous publications [1,2,3,4,5]. In general, the higher the volume of fibre (V f ) added to concrete mix the better the mechanical properties of the hardened composite are. At the same time increasing fibre volume in concrete causes the loss of workability of fresh mixes and problems with casting and forming [6]. Currently, fibre plays a very important and rapidly growing role in modern concrete technology. Harnessing fibre as concrete reinforcement allows to enhance its mechanical properties and obtaining significant economic benefits. Fibre quickly becomes an important element of sustainable development of construction industry [7]. As far as technology of fibre reinforced self-compacting concrete (FRSCC) is concerned the main problem is the technical difficulty of its preparation and implementation processes during casting. There is a real need to examine and describe the true nature of FRSCC workability and determine the effect of added fibre on multiple phenomena occurring in fresh mix and hardened SCC composite.According to numerous researchers [8, 9] a fresh concrete mix under loading behaves like viscoplastic Bingham body. It basically behaves as a rigid body at low stresses but flows as a viscous fluid at high stresses.Rheological parameters yield point (g) and plastic viscosity (h) are material constants, characterizing the properties of a fresh concrete mix. Once the stresses exceed the yield point, the mixture will flow at a rate proportional to plastic viscosity. The smaller the plastic viscosity of the mixture, the greater the speed of the flow at a given load. Workability-wise, the yield point parameter is the most essential for shaping workability of both ordinary and SCC fresh mixes. In case of ordinary concrete mixes (which are traditionally compacted by vibration),

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Workability and Mechanical Performance of Steel Fiber-Reinforced Self-Compacting Concrete with Fly Ash

Cited by 171 publications

References 24 publications

The Effect of Steel Fiber on Some Mechanical Properties of Self Compacting Concrete

The Effect of Steel Fiber on Some Mechanical Properties of Self Compacting Concrete

Çeli̇k Ve Senteti̇k Li̇fleri̇n Kendi̇li̇ği̇nden Yerleşen Betonlarin Taze Ve Mekani̇k Özelli̇kleri̇ Üzeri̇ne Etki̇si̇

Fresh Mix Characteristics of Self-Compacting Concrete Reinforced by Fibre

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