Fibers include steel fibers, glass fibers, synthetic fibers and natural fibers each of which lend varying properties to the concrete. The use of fiber does not have a major effect on the compressive strength of the concrete. Astm c1609, standard test method for flexural performance of fiber reinforced concrete using beam with thirdpoint loading, is one specification governing the testing of fiber reinforced concrete beams. It is perfect for commercial and residential slabs, composite metal decks, paving, pervious paving, curb and gutter, slip form, architectural and decorative, shotcrete, wall, and white topping applications. The compressive and splitting tensile strengths and modulus of rupture mor of. He is a member of aci committees 363, highstrength concrete. Fiber reinforced concrete frc seminar and ppt with pdf report. Properties and applications offiber reinforced concrete 51 high aspect ratio were found to have improved effectiveness. The change in the percentage of polypropylene fiber had increment in compressive, flexural and split tensile strength of pervious concrete when compare with similar. The problem with welded wire mesh is that it often ends up on the ground from being stepped on as the concrete is being placed particularly if no support blocks are used. Masterfiber f 100 enhanced fibrillated polypropylene fiber is a unique technology that creates additional micro fibrils that are attached to the principle fibrillated network. Final concrete performance the effects of polypropylene fibre concrete in its plastic state lead to other advantages in its hardened. Grace microfiber is produced on a stateoftheart production line which is specifically designed to yield an ultra thin concrete reinforcing fibre. Fiber reinforced concrete types, properties and advantages.
A wide variety of fibres have been proposed by the. Pdf plastic shrinkage cracking test have been performed on polypropylene fiber reinforced concrete to evaluate the effectiveness of the fibers in. Concrete reinforced with polypropylene fibers concrete. Design of fibre reinforced concrete beams and slabs. Longer fibers can be used when larger aggregates are present to shear the bundles of fiber apart. These fibers are manufactured polymerbased materials such as polypropylene, nylon, or polyethylene. The capability of durable structure to resist weathering action, chemical attack, abrasion and other degradation processes during its service life with the minimal maintenance is equally important as the capacity of. Sustainable fiber reinforced concrete for repair applications.
A combination of high strength, stiffness and thermal resistance favorably characterizes the fiibers. Ultra high strength fiber reinforced concrete using aramid. Pdf experimental investigation on polypropylene fiber. Three variables were considered, each at two levels, to assess their effects on plastic shrinkage cracking of concrete. Evaluation of ultrahighperformance fiberreinforced concrete. Building professionals anc concrete contracters are increasingly turning to the use of fibers in different shapes, sizes, and colors to reinforce concrete for many building applications. Application of coir fibres as concrete composites for disaster prone structures abstract investigations to overcome the brittle response and limiting post yield energy absorption of concrete led to the development of fibre reinforced concrete using discrete fibres within the concrete mass. For fiber reinforced concrete to be a viable construction material, it must be able to compete economically with existing reinforcing system. Various type of fiber is used such as glass, carbon, steel, asbestos, polyester and polypropylene. Designed specifically for use in concrete, they are alkali resistant, nonabsorptive and completely noncorrosive.
The effects of fiber reinforcement are evaluated for various physical, shortterm, and longterm benefits they impart to the. Application of coir fibres as concrete composites for. Bundles but, now 3m has a solution that avoids those disadvantages. Properties and applications offiber reinforced concrete faisal fouad wafa associate professor, civil engineering department, faculty ofengineering, king abdulaziz university, jeddah, saudi arabia. As a result of this ability to arrest cracks, fibre composites possess. Thus, cellulose fibers can be found as strands long fibers with lengths between around 20 and 100 cm, staple fibers short length fibers which can be spun into yarns, or pulp very short fibers of lengths around 110 mm which should be dispersed into water to separate them. High strength concrete and polypropylene fibre, compressive strength, plastic shrinkage cracking. Thus unlike plain concrete, a fiber reinforced concrete. Fiber reinforced concrete are of different types and properties with many advantages. Effective protection and curing is essential for all concrete slabs including polypropylene fibre concrete.
The presence of fibers also results in a more homogeneous, isotropic, and ductile behavior of concrete 17. Such concrete is also used in retrofitting and repairing the covering of concrete structure, tunnels, etc. Mechanical properties of steelpolypropylene fibre reinforced. Fiber reinforced concrete free download as powerpoint presentation. Glass fiber reinforced polymer gfrp is a fiber reinforced polymer made of a plastic matrix reinforced by fine fibers of glass. This ppt is for comparative study of fiber reinforced concrete and plain cement concrete. An experimental investigation explored properties such as compressive strength, flexural strength, split tensile. Cip 24synthetic fibers for concrete what are synthetic fibers synthetic fibers engineered for use in concrete can withstand the longterm alkaline environment of concrete. In particular, polypropylene fibers ppf are widely used in structural concrete to. Fiber reinforced concrete and admixtures concrete materials. The literature showed that, for the low fiber volumes 0.
There were fewer and narrower cracks in the frc even though the frc had more shrinkage than the control. These additional anchorage sites provide increased bonding between the mortar matrix and the fiber network and enhance the performance of masterfiber f 100 product as a. The literature search yielded information from numerous laboratory studies of the material properties of polypropylene fiber reinforced concrete pfrc. Grace concrete products grace fibers tm synthetic fiber for concrete astm c1116, astm c94 product description grace fibers tm are synthetic fibers for concrete, manufactured from 100% virgin polypropylene in collated, fibrillated form. Influence of steelpolypropylene fibers on fracture parameters of. Here author suggested the use of these plastic bags pieces in a concrete as a plastic fiber to improve the properties of concrete. It increases stiffness, torsional strength, ductility, rotational capacity, and the numberofcracks with less crack width.
Two kinds of fiber that very often used in the concrete are. Influence of polypropylene fiber on strength of concrete american. Solomon ultrafiber 500 is the only alkaline resistant cellulose fiber reinforcement. Polypropylene fiber article about polypropylene fiber by. Fibers used are steel fibers, synthetic fibers, glass fibers, natural fibers, asbestos fibers and carbon fibers.
Fibre reinforced concrete frc has been found to improve strength, ductility, toughness, and durability of the structures. Polypropylene fibers are synthetic fibers obtained as a byproduct from textile industry. Thousands if individual fibers are then evenly dispersed throughout the concrete during the mixing process creating a matrixlike structure. Fiber reinforced concrete is one of the fastest growing segments in the concrete industry. Polypropylene fibre concrete cannot be used as a substitute for structural steel reinforcement. The sorts incorporate polymerimpregnated solid, polymer cement, and polymerportlandbond concrete. Despite the space limitations in the tunnel, the fiber reinforced concrete solution allowed for the more efficient use of crews with less downtime and, more importantly, it met the specified performance parameters. Fibers can be added to the concrete mix in lieu of welded wire mesh.
In contrast, barchips high quality polypropylene macro synthetic fiber reinforced concrete will not suffer the effects of corrosion and will maintain performance regardless of exposure conditions. Evaluation of ultrahighperformance fiber reinforced concrete celik ozyildirim, ph. The strength potential of nylon fiber reinforced concrete was investigated versus that of the polypropylene fiber reinforced concrete, at a fiber content of 0. Polypropylene fiber in concrete mix design is used for multiple purposes that includes rigid pavement, self compacting concrete and other. Concrete solutions datasheet polypropylene fibre concrete with cemex readymix you can be assured of getting the best range of concrete. Rebar reinforced concrete uses steel bars that are laid within the liquid cement, which requires a great deal of prep work but make for a much stronger concrete. Kene abstract fiber reinforced concrete has been successfully used in slabs on grade, shotcrete, architectural panels, precast products, offshore. Polypropylene fiber in concrete mix design is used for multiple purposes that includes rigid pavement, selfcompacting concrete and other applications. Fiber reinforced concrete synthetic fiber reinforcemet. In fiber reinforced concrete, short discontinuous fibers are added to plain and reinforced concrete to improve the post cracking behavior and tensile strength to weight ratio. Fibers are for the control of cracking due to plastic shrinkage, plastic settlement and thermal expansioncontraction, lowered permeability, increased impact, abrasion and shatter resistance. Fiber glass is a lightweight, strong, and robust material used in different industries due to their excellent properties. Fiber reinforced concrete frc is concrete made primarily of hydraulic cements, aggregates, and discrete reinforcing fibers.
Fibers suitable for reinforcing concrete have been produced from steel, glass, and organic polymers synthetic fibers. Test results for concretes obtained by using water blended with yeast granules are also reported in this paper. Grace microfiber is a synthetic fiber for concrete, manufactured from 100% virgin polypropylene in a monofilament form. Micro fibers should be used for plastic shrinkage control cracking that can occur in the first 24 hours of concrete cure, impact protection, and reduction of explosive spalling during a fire. Naturally occurring asbestos fibers and vegetable fibers, such as sisal and jute, are also used for reinforcement.
Nemati winter quarter 2015 6 concrete technology 11 fiber reinforced concrete frc examination of fractured specimens of fiber reinforced concrete shows that failure takes place primarily due to fiber pullout or debonding. Fiberreinforced concrete smart materials and smart sensors aci fall 2011 convention october 16 20, cincinnati, oh aci web sessions antoine naaman, faci, is a professor in the department of civil and environmental engineering at the university of michigan. Performance of polypropylene fibre reinforced concrete. This finding is very important since traditionally people think the. Behaviour of polypropylene fiber reinforced concrete under dynamic. Recently, however the development of polypropylene fiber reinforced concrete pfrc has provided a technical basis for improving these deficiencies. I used coconut fiber as a alternate solution of steel.
Fibsol fibre reinforcing solutions is a south african based company specialising in alternative concrete reinforcement designs utilizing the latest technology to design cost effective fibre reinforced concrete solutions for a large number of applications. During the past two decades, there has been considerable interest in the study of fiber reinforced concrete and its appli cations to several types of structures. Apart from its origin, the reinforcements based on cellulose fibers can be classified by the function of their form. The type of polypropylene fiber recommended by manufacturers for paving applications is the collated fibrillated fiber. Pdf using polypropylene fibers in concrete to achieve. The paper presents research work of experimental investigation on polypropylene fiber reinforced concrete by replacing river sand to artificial sand with and without admixture. Cellulosic fiber reinforced cementbased composites. Fiber reinforced concrete frc examination of fractured specimens of fiber reinforced concrete shows that failure takes place primarily due to fiber pullout or debonding. The aim of the study was to achieve maximum strength of concrete by using optimum weight of polypropylene fibers. In this study, the results of the strength properties of polypropylene fiber reinforced concrete have been presented. Polymer cement is a piece of gathering of cements that utilizes polymers to supplement bond as a cover. Plastic shrinkage cracking of polypropylene fiber reinforced concrete was investigated experimentally. Recent studies performed on a highperformance fiber reinforced concrete in a bridge deck found that adding fibers provided residual strength and controlled cracking. Our office, allegheny design services, has examples on exterior slabsongrade of over 20 years old, with only fiber reinforcing that still exhibits no cracks.
Compressive strength of fiber reinforced concrete with fly ash. Compared to rebar or mesh, cfs 1002 steel fiber allows for extended joints without visible cracks and minimal curling. Study on addition of the natural fibers into concrete saandeepani vajje, dr. Our concrete fiber is not affected by concrete s alkali environment and will not suffer late age strength loss embrittlement.
Polypropylene fiber ppf have been extensively used as a reinforcement. They include steel, glass, synthetic and natural fibers. But all these measures do not improve the post cracking behavior of concrete. It displays good heatinsulating properties and is highly resistant to acids, alkalies, and organic solvents. Types of fiber reinforced concrete steel fiber reinforced concrete steel fiber reinforced concrete is basically a cheaper and easier to use form of rebar reinforced concrete.
Comparison of performance of standard concrete and fibre. Department of transportation federal highway administration virginia center for transportation innovation and research a partnership of the virginia department of transportation. As soon as some tension is developed, it will lose its stiffness. Pdf performance of polypropylene fibre reinforced concrete. Pdf use of fiber reinforced concrete for concrete pavement. Fiber reinforced concrete is a type of concrete that includes fibrous substances that increase its structural strength and cohesion. What are the disadvantages of fiber reinforced concrete. Pdf on apr 16, 2015, mirvat abdallah and others published polypropylene fiber reinforced concrete find, read and cite all the research you need on.
Fatigue strength of fibrillated polypropylene fiber. Application per cubic yard shall equal a minimum of 1. Experimental evaluation of compressive and flexural. Some recent research indicated that using fibres in concrete has limited effect on the impact resistance of concrete materials.
It was observed that the concrete was good enough workable up to 1. To make concrete able to absorb tension force be use reinforced concrete. Reinforcing concrete by adding fibers the concrete network. They are available in various sizes and lengths of monofilament and fibrillated polypropylene. Pdf polypropylene fiber reinforced concrete researchgate. An experimental program was carried out to explore its effects on compressive, tensile, flexural strength under different curing condition. Studies revealed that the production of one ton cement releases around one ton of co. Introduction to steel fiber reinforced concrete on. Report on the physical properties and durability of fiber reinforced concrete reported by aci committee 544 aci 544. It has enhances the bonding between the coarse aggregate and cement paste. Thus unlike plain concrete, a fiber reinforced concrete specimen does not break immediately after initiation of the first crack. Optimal polypropylene fiber content for improved compressive and flexural strength of concrete. Principal research scientist in cooperation with the u.
Durability of glass, polypropylene and steel fiber reinforced. In particular, three types of tests were performed. Steel fiber reinforced concrete nguyen van chanh 1 summary it is now well established that one of the important properties of steel fibre reinforced concrete sfrc is its superior resistance to cracking and crack propagation. The strength potential of nylonfiberreinforced concrete was investigated versus that of the polypropylenefiberreinforced concrete, at a fiber content of 0. Using polypropylene fibers in concrete to achieve maximum strength. The main objective of this study was to develop a mix design adjustment method for fiber reinforced concrete frc that would maintain appropriate workability while improving hardened concrete. At that time, it was considered to be one of the worlds most modern and straightforward handbooks on the design of steel fibre reinforced concrete structures. Short fibers are used with small or lightweight aggregate. The fibers improve crack control and preserve post cracking structural integrity ofmembers. Polypropylene fibers are synthetic fibers obtained as a by. It includes fundamental principles of frc, a glossary of terms, a description of.
Itwas shown that for thesamelengthanddiameter,crimpedendfibers can achievethesamepropertiesas straight fibers using 40 percent less fibers s. The paper deals with the effects of addition of various proportions of polypropylene fibers on the properties of high strength concrete m30and m40 mixes. The steel fibers had an elastic modulus of 210 gpa, a length of 25 mm, and a diameter of 0. Pdf using polypropylene fibers in concrete to achieve maximum. The results show that incorporating polypropylene fibers improves mechanical properties. Fiber reinforced concrete has small distinct fibers that are homogeneously dispersed and oriented haphazardly. Polypropylene fiber is generally superior to polyamide fibers in elasticity and resiliency, but it has lower wear resistance. Design of fibre reinforced concrete beams and slabs master of science thesis in the masters programme structural engineering and building performance design ammar abid, kenneth b.
Use of fiber reinforce polymer in civil engineering increase rapidly. The fibrillated micro fibers are often used in replacement of the lightest welded wire fiber 6x6 w1. Polypropylene fiber a synthetic fiber formed from a polypropylene melt. This fiber reinforced concrete solution saved the contractor significant labor, time and money if compared to installing reinforcement. Residual strength is directly proportional to the fiber content. The fiber dispersion into concrete is one of the technique to improve the building properties of concrete. In addition, the character of fiber reinforced concrete changes with varying concretes, fiber materials, geometries, distribution, orientation, and densities. Frc can also significantly lower materials and labor costs compared to rebar or wire mesh reinforced concrete.
Fiber reinforced concrete is used to improve the performance of concrete cracking and shrinkage problems. Use of plastic has a dual advantage cost of material is low also it solve the. The mixing time of fibrillated or tape fibers should be kept to a minimum to avoid possible shredding of the fibers. It holds short discrete fibers that are uniformly distributed and circumstances oriented. Fiber reinforced concrete reinforced concrete concrete. This paper investigats the effects of addition of polypropylene, glass, and steel fibers on durability properties of fiber reinforced concrete. Ramakrishnan, and gary vondran this paper presents the results of an experimental investigation to determine the flexural fatigue strength of concrete reinforced with three different concentrations of fibrillated polypropylene fibers. Polypropylene fibers are characterized by low specific gravity and low cost. Fiber reinforced concrete frc is a new structural material which is gaining increasing importance. High performance, fiber reinforced conc rete, special loadings and structural applications b. Fatigue strength of fibrillated polypropylene fiber reinforced concretes m. Therefore, this study has been carried out to generate experimental data on standard concrete of grade m45 and fiber reinforced standard concrete exposed to elevated temperatures. Pdf strength properties of nylon and polypropylene.
This paper presents an overview of the effect of polypropylene pp fibers on various properties of concrete in fresh and hardened state such as compressive strength, tensile strength, flexural. Cement content kgm 3 sand kgm 3 gravel kgm 3 wc ratio % of polypropylene fiber by volume by volume of concrete 1 45 350 620 1240 0. Polypropylene fibers are added to concrete during batching. Concrete, waste plastic bottles, fibers, cube and cylinder, compressive strengths, tensile strength, bond strength,flexural strength. The positive interactions between polypropylene fibers lead to the lowest drying shrinkage of fibrous concrete. The interest in the use of fibers for the reinforcement of composites has increased during the last several years. Introduction to steel fiber reinforced concrete on engineering performance of concrete vikrant s. Concrete technology fiber reinforced concrete professor kamran m. Fiberreinforced concrete seminar ppt with pdf report. Earlier, experiments were carried out in vniipo with the polypropylene fiber prozask igs to determine.
Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials. Pdf polypropylene fiber reinforced fly ash concrete a. This page contains fiber reinforced concrete frc seminar and ppt with pdf report. The evaporation of concrete surface water is a factor in creating the contract paste fracture in concrete which leads to the formation of tension stress since the concrete. Polypropylene microfibers against explosive spalling of. Polypropylene fibers tend to hold the concrete mix together. Torsion the use of fibers eliminate the sudden failure characteristic of plain concrete beams. Mechanical properties of concrete materials reinforced. Astm c1609 flexural testing of fiberreinforced concrete beams. Polypropylene fibers at relatively low volume fractions fiber reinforced concrete frc examination of fractured specimens of fiber reinforced concrete shows that failure takes place primarily due to fiber pullout or debonding. Polypropylene fiber with 12mm length and four volume fractions of 0%, 0. Fiber products for concrete reinforcement psi fiberstrand microsynthetic fibers psi fiberstrand fibers are used for plastic shrinkage crack control and are ideally suited to secondary reinforcing applications for slabs and precast concrete. Fiber reinforced concrete an overview sciencedirect topics.
Properties and applications offiber reinforced concrete. Polypropylene fiber concrete is versatile and can be used in most applications. Additionally, the excellent finishability of cfs 1002 steel fibers makes them the ideal solution for slabonground applications. Fiber reinforced concrete frc is concrete consisting fibrous material which increases its structural purity. Although strength properties are somewhat lower than carbon fiber and it is less stiff. The three variables and their corresponding levels are given. Study of strength of polypropylene fiber reinforced concrete. The swedish concrete association published a report on steel fibre reinforced concrete in 1995. If fibers are too long, uniform distribution of the fibers becomes difficult. These are available in different aspect ratios and are cheap in cost.
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