PERFORMANCE OF CONCRETE BY USING STEEL FIBRE An Experimental Study (original) (raw)
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Effect of Steel Fibres on Mechanical Properties of Concrete: A Review
Studies in Indian Place Names (SIPN) - EDUindex Journals , 2020
Concrete is broadly utilized material in development of construction industry. This is a result of good functionality and capacity to be mold into any shape. Common concrete has exceptionally low elasticity, restricted ductility and less resistance from cracking. The concrete shows the brittle nature and neglects to deal with tensile loading henceforth prompts inside smaller scale creaks which are for the most part liable for brittle failure of cement concrete. In this time, RCC developments have their very own structural and strength prerequisites, each structure has its very own planned reason and henceforth to meet this reason, alteration in conventional concrete is required. It has been demonstrated that steel fibres are greatly influence mechanical property of concrete. When contrasted with different strands it is presently settled that one of the major properties of Steel Fibre Reinforced Cement (SFRC) is its better obstruction against splitting and cracking. In this paper past investigations which are conduct onsteel fibre concrete is considered in detail.
Influence of Steel Fiber on Mechanical Properties of Concrete
Journal of Emerging Technologies and Innovative Research (JETIR), 2020
Concrete is a versatile material due to casting in any shape and provides good workability. Our infrastructure like rigid pavements of highways, bridges, harbors etc. develops rapidly. it requires improved mechanical properties of concrete. This research work is carried out to study the effects of steel fibre inclusion on mechanical properties of concrete. The present work deals with the compressive strength and water absorption studies on steel fibre reinforced concrete (SFRC) of grade M40 with steel fibre. The mix proportions for SFRC were arrived at by performing mix design. In SFRC the steel fibre total is 1%, 1.5%, 2% by volume of concrete has been taken. In this experiment two types of fibres has been used hooked end fibres and flat crimped fibres. All mixes were designed at single water cement ratio (w/c ratio) is 0.4. The results of compressive strength test and water absorption test has been compared and also equate with conventional concrete. Addition of fibres to concrete increased the 28 days Compressive strength and decreased water absorption.
In the recent years, lots of researches have been performed to improve the mechanical and durability properties of concrete. SFRC is found to be one of the best ways for the reduction of the brittleness of concrete and enhance its engineering properties. Steel fibers can be defined as a short length of steel which is used according to its aspect ratios (i.e. ratio of Length to diameter) in the range of 20 to 100. This paper presents the introduction of steel fiber, review of experimental studies which has been done in the previous years and comparison between three different types of steel fibers i.e. (Straight, Hooked, and Crimpt) on the basis of their effect on the mechanical properties of concrete.
Mechanical properties of steel fibre concrete
Magazine of Concrete Research, 2013
Two types of hooked fibres and one type of twisted steel fibre were used as reinforcement in beam specimens of size 150 mm × 150 mm × 500 mm. A series of experiments was carried out to investigate the effect of size, shape and amount of steel fibres on the mechanical properties of concrete, such as the compressive strength, first-crack flexural strength and ultimate flexural strength, modulus of elasticity, flexural toughness and ductility. The guidelines of ASTM C1609 were used to carry out the bending tests. The compressive strengths of the concrete mixes were obtained from cylinder tests as per the guidelines of ASTM C39. The experimental findings indicate that addition of steel fibres in concrete can slightly enhance the compressive strength and modulus of elasticity, but remarkably improve flexural strength, flexural toughness and ductility. Results were further extended to find a simple formula for modulus of rupture (MOR) of steel fibre concrete, which is based on ACI 318 cod...
Effect of Steel Fibers on the Mechanical Strength of Concrete
Civil Engineering Journal
The study is based on designing the mix design of the concrete for the class named MR_DK_E1: C30/37, one of the most widely used classes of normal concrete. To see the effect of the fibers on concrete, we will design three mixtures that in other components are similar to the first mixture "Normal Concrete",but as an additive, we will add 0.75%, 1.5%, and 2.0% of steel fiber (Romfracht SRL Company Profile) to the mass of concrete. Although some researchers have already detailed the favourable qualities of steel fiber reinforced concrete (SFRC), there is very little data regarding the design and performance of this type of concrete. To get to know something more in terms of the properties of steel fiber reinforced concrete, during the realization of this work we will perform some experimental tests based on European standards to understand closely how fibers affect the growth and improvement of properties of concrete with lime aggregate and local cement CEM II/BM (WL) 42.5N,...
STUDY OF MECHANICAL PROPERTIES OF HIGH STRENGTH CONCRETE BY USING STEEL FIBER – A REVIEW
Concrete is the mostly used construction material in the world but there is a disadvantage of concrete that it is week in tension. This results to the brittleness of concrete. This property is not desirable for any kind of construction so there is requirement of tensile reinforce. in concrete in the previous time steel is used as tensile reinforcement in the tensile zone of concrete this steel is specifically designed but in case of fibres, fibres are short thin and uniformly or randomly distributing in the concrete steel fibres are basically defined as fibres that are short in length and having different cross sections according to the length and diameter (Aspect ratio) from 20 to 100 these are of small size due to which they can be easily distributed in the fresh controlled mix. this random distribution shows loss of efficiency but the addition of fibres in concrete shows improvement in toughness and tensile properties of concrete with the help of resistance to cracking, with the help of different researches it is found that there is improvement in the properties of concrete and further development of steel fibre reinforced concrete is going on since last three decades this paper presents review of mechanical property of steel fibre reinforced concrete its benefits and its uses.
PERFORMANCE OF CONCRETE WITH ADDING OF STEEL FIBERS
Concrete made with Portland cement has certain characteristics: it is relatively strong in compression but weak in tension and tends to be brittle. These two weaknesses have limited its use. Another fundamental weakness of concrete is that cracks start to form as soon as concrete is placed and before it has properly hardened. These cracks are major cause of weakness in concrete particularly in large on site applications leading to subsequent fracture and failure and general lack of durability. Fiber reinforced concrete (FRC) may be defined as a composite materials made with Portland cement, aggregate, and incorporating discrete discontinuous fibers. Fiber-reinforced concrete (FRC) is concrete containing fibrous material which increases its structural integrity. It contains short discrete fibres that are uniformly distributed and randomly oriented – each of which lend varying properties to the concrete. In addition, the character of fibre-reinforced concrete changes with varying concretes, fibre materials, geometries, distribution, orientation, and densities. In this experimental investigation, an attempt has made to find out strength related tests like Compressive Strength, Split Tensile Strength, Flexural Strength using hooked end Steel Fibers with to volume fraction of 0.5% and 1% and for aspect ratio and considered for M40 Grade of concrete. Number of specimens were casted, cured and tested. The real contribution of the fibers is to increase the toughness of the concrete, under any type of loading and permit the fiber reinforced concrete to carry significant stress over a relatively large strain capacity in the post cracking stage. The results of the tests showed that the strength properties are enhanced due to addition of fibers.
A Practical Investigation on the Behavior of Steel Fibre Reinforced Concrete
Cement concrete is the most extensively used construction material in the world. The reason for its extensive use is that it provides good workability and can be moulded to any shape. Ordinary cement concrete possesses a very low tensile strength, limited ductility and little resistance to cracking. Internal micro cracks lead to brittle failure of concrete. In this modern age, civil engineering constructions have their own structural and durability requirements. Every structure has its own intended purpose and hence to meet this purpose, modification in traditional cement concrete has become mandatory. It has been found that different type of fibers added in specific percentage to concrete improves the mechanical properties, durability and serviceability of the structure. It is now established that one of the important properties of Steel Fiber Reinforced Concrete (SFRC) is its superior resistance to cracking and crack propagation. In this paper effect of fibers on the strength of concrete for M20 and M40 grade have been studied by varying the percentage of fibers in concrete. Fiber content were varied by 0.50%, 1% and 1.5% by volume of cement. Cubes of size 150mmX150mmX150mm to check the compressive strength and beams of size 500mmX100mmX100mm for checking flexural strength were casted. All the specimens were cured for the period of 7, 28 and 56 days before crushing. The results of fiber reinforced concrete for 3days, 7days and 28days curing with varied percentage of fiber were studied and it has been found that there is significant strength improvement in steel fiber reinforced concrete. The optimum fiber content while studying the compressive strength, flexural strength cube is found to be 1%. Also, it has been observed that with the increase in fiber content up to the optimum value increases the strength of concrete. Slump cone test was adopted to measure the workability of concrete. The Slump cone test results revealed that workability gets reduced with the increase in fiber content.
Comparative Study of Different Types of Steel Fiber over Conventional Concrete
International Journal for Research in Applied Science and Engineering Technology, 2017
This paper deals with the experimental investigation for M25 grade of concrete to study the compressive strength tensile strength flexural strength and workability of Steel fiber reinforced concrete containing 0% 1% and 2% of 3 different types of Steel fiber that is creamed Flat fiber, creamed around fiber and both in hooked fiber. Result data obtained have been analyzed and compared with the conventional concrete (0% of Steel fiber). Relationship between the physical properties of concrete with respect to days is represented graphically. These results data clearly show that the increase in compressive strength tensile strength and flexible stand with the increase of Steel fibers while the reduced in workability with the increase in doses of Steel fibers are also plotted graphically