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. The fiber dispersion into concrete is one of the technique to improve the building properties of concrete. 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. Concrete technology fiber reinforced concrete professor kamran m. It increases stiffness, torsional strength, ductility, rotational capacity, and the numberofcracks with less crack width. Application per cubic yard shall equal a minimum of 1. Solomon ultrafiber 500 is the only alkaline resistant cellulose fiber reinforcement. Polypropylene fibre concrete cannot be used as a substitute for structural steel reinforcement. 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. Fiber reinforced concrete frc is a new structural material which is gaining increasing importance. Fibers used are steel fibers, synthetic fibers, glass fibers, natural fibers, asbestos fibers and carbon fibers. 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.
Fiber reinforced concrete frc seminar and ppt with pdf report. Studies revealed that the production of one ton cement releases around one ton of co. Here author suggested the use of these plastic bags pieces in a concrete as a plastic fiber to improve the properties of concrete. Report on the physical properties and durability of fiber reinforced concrete reported by aci committee 544 aci 544. Kene abstract fiber reinforced concrete has been successfully used in slabs on grade, shotcrete, architectural panels, precast products, offshore. Polypropylene fibers tend to hold the concrete mix together. The effects of fiber reinforcement are evaluated for various physical, shortterm, and longterm benefits they impart to the. As a result of this ability to arrest cracks, fibre composites possess. 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. Residual strength is directly proportional to the fiber content. The compressive and splitting tensile strengths and modulus of rupture mor of. 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. Behaviour of polypropylene fiber reinforced concrete under dynamic.
An experimental investigation explored properties such as compressive strength, flexural strength, split tensile. 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. Itwas shown that for thesamelengthanddiameter,crimpedendfibers can achievethesamepropertiesas straight fibers using 40 percent less fibers s. Fiber reinforced concrete synthetic fiber reinforcemet. High strength concrete and polypropylene fibre, compressive strength, plastic shrinkage cracking. Plastic shrinkage cracking of polypropylene fiber reinforced concrete was investigated experimentally. The presence of fibers also results in a more homogeneous, isotropic, and ductile behavior of concrete 17. Use of plastic has a dual advantage cost of material is low also it solve the. 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. Concrete reinforced with polypropylene fibers concrete. Torsion the use of fibers eliminate the sudden failure characteristic of plain concrete beams.
The three variables and their corresponding levels are given. Polypropylene fiber is generally superior to polyamide fibers in elasticity and resiliency, but it has lower wear resistance. Fiber reinforced concrete is a type of concrete that includes fibrous substances that increase its structural strength and cohesion. Pdf using polypropylene fibers in concrete to achieve. I used coconut fiber as a alternate solution of steel. Concrete solutions datasheet polypropylene fibre concrete with cemex readymix you can be assured of getting the best range of concrete. There were fewer and narrower cracks in the frc even though the frc had more shrinkage than the control. 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.
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. Compared to rebar or mesh, cfs 1002 steel fiber allows for extended joints without visible cracks and minimal curling. Recent studies performed on a highperformance fiber reinforced concrete in a bridge deck found that adding fibers provided residual strength and controlled cracking. 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.
Fiber reinforced concrete is used to improve the performance of concrete cracking and shrinkage problems. In addition, the character of fiber reinforced concrete changes with varying concretes, fiber materials, geometries, distribution, orientation, and densities. An experimental program was carried out to explore its effects on compressive, tensile, flexural strength under different curing condition. Using polypropylene fibers in concrete to achieve maximum strength. Earlier, experiments were carried out in vniipo with the polypropylene fiber prozask igs to determine. Longer fibers can be used when larger aggregates are present to shear the bundles of fiber apart. Fibre reinforced concrete frc has been found to improve strength, ductility, toughness, and durability of the structures. 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. It was observed that the concrete was good enough workable up to 1. Mechanical properties of steelpolypropylene fibre reinforced. 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. This paper investigats the effects of addition of polypropylene, glass, and steel fibers on durability properties of fiber reinforced concrete.
Comparison of performance of standard concrete and fibre. In particular, three types of tests were performed. Fibers are for the control of cracking due to plastic shrinkage, plastic settlement and thermal expansioncontraction, lowered permeability, increased impact, abrasion and shatter resistance. 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. Use of fiber reinforce polymer in civil engineering increase rapidly. 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. 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.
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. Properties and applications offiber reinforced concrete. Fiber reinforced concrete has small distinct fibers that are homogeneously dispersed and oriented haphazardly. Mechanical properties of concrete materials reinforced. Compressive strength of fiber reinforced concrete with fly ash. Polypropylene fiber in concrete mix design is used for multiple purposes that includes rigid pavement, self compacting concrete and other. Fibers suitable for reinforcing concrete have been produced from steel, glass, and organic polymers synthetic fibers. Pdf polypropylene fiber reinforced fly ash concrete a. 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. A wide variety of fibres have been proposed by the. These are available in different aspect ratios and are cheap in cost. They include steel, glass, synthetic and natural fibers.
Polypropylene fiber ppf have been extensively used as a reinforcement. Influence of steelpolypropylene fibers on fracture parameters of. Fiber reinforced concrete types, properties and advantages. Bundles but, now 3m has a solution that avoids those disadvantages. Polypropylene fibers are synthetic fibers obtained as a by. Three variables were considered, each at two levels, to assess their effects on plastic shrinkage cracking of concrete. Additionally, the excellent finishability of cfs 1002 steel fibers makes them the ideal solution for slabonground applications. Polypropylene fiber concrete is versatile and can be used in most applications. 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. The strength potential of nylon fiber reinforced concrete was investigated versus that of the polypropylene fiber reinforced concrete, at a fiber content of 0. Although strength properties are somewhat lower than carbon fiber and it is less stiff. 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.
Effective protection and curing is essential for all concrete slabs including polypropylene fibre concrete. Introduction to steel fiber reinforced concrete on engineering performance of concrete vikrant s. Pdf strength properties of nylon and polypropylene. Fibers include steel fibers, glass fibers, synthetic fibers and natural fibers each of which lend varying properties to the concrete. Designed specifically for use in concrete, they are alkali resistant, nonabsorptive and completely noncorrosive. 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. It holds short discrete fibers that are uniformly distributed and circumstances oriented. Fibers can be added to the concrete mix in lieu of welded wire mesh. Fatigue strength of fibrillated polypropylene fiber. Polypropylene microfibers against explosive spalling of. Properties and applications offiber reinforced concrete 51 high aspect ratio were found to have improved effectiveness. The fibrillated micro fibers are often used in replacement of the lightest welded wire fiber 6x6 w1. Fiber reinforced concrete can be defined as a composite material consisting of mixtures of cement, mortar or concrete and discontinuous, discrete, uniformly dispersed suitable fibers.
Fiber reinforced concrete and admixtures concrete materials. This finding is very important since traditionally people think the. The interest in the use of fibers for the reinforcement of composites has increased during the last several years. A combination of high strength, stiffness and thermal resistance favorably characterizes the fiibers. Durability of glass, polypropylene and steel fiber reinforced. Polypropylene fibers are characterized by low specific gravity and low cost.
The paper presents research work of experimental investigation on polypropylene fiber reinforced concrete by replacing river sand to artificial sand with and without admixture. Properties and applications offiber reinforced concrete faisal fouad wafa associate professor, civil engineering department, faculty ofengineering, king abdulaziz university, jeddah, saudi arabia. Department of transportation federal highway administration virginia center for transportation innovation and research a partnership of the virginia department of transportation. Performance of polypropylene fibre reinforced concrete. In this study, the results of the strength properties of polypropylene fiber reinforced concrete have been presented. For fiber reinforced concrete to be a viable construction material, it must be able to compete economically with existing reinforcing system. The strength potential of nylonfiberreinforced concrete was investigated versus that of the polypropylenefiberreinforced concrete, at a fiber content of 0. Pdf on apr 16, 2015, mirvat abdallah and others published polypropylene fiber reinforced concrete find, read and cite all the research you need on. 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. 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. Introduction to steel fiber reinforced concrete on. Optimal polypropylene fiber content for improved compressive and flexural strength of concrete. Cip 24synthetic fibers for concrete what are synthetic fibers synthetic fibers engineered for use in concrete can withstand the longterm alkaline environment of concrete.
He is a member of aci committees 363, highstrength concrete. Polypropylene fiber article about polypropylene fiber by. The paper deals with the effects of addition of various proportions of polypropylene fibers on the properties of high strength concrete m30and m40 mixes. Astm c1609 flexural testing of fiberreinforced concrete beams. Recently, however the development of polypropylene fiber reinforced concrete pfrc has provided a technical basis for improving these deficiencies. Short fibers are used with small or lightweight aggregate. Some recent research indicated that using fibres in concrete has limited effect on the impact resistance of concrete materials. Pdf plastic shrinkage cracking test have been performed on polypropylene fiber reinforced concrete to evaluate the effectiveness of the fibers in. Grace microfiber is produced on a stateoftheart production line which is specifically designed to yield an ultra thin concrete reinforcing fibre. Concrete, waste plastic bottles, fibers, cube and cylinder, compressive strengths, tensile strength, bond strength,flexural strength.
Polypropylene fibers are synthetic fibers obtained as a byproduct from textile industry. Polypropylene fiber with 12mm length and four volume fractions of 0%, 0. Our office, allegheny design services, has examples on exterior slabsongrade of over 20 years old, with only fiber reinforcing that still exhibits no cracks. 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. 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. Thus unlike plain concrete, a fiber reinforced concrete. This page contains fiber reinforced concrete frc seminar and ppt with pdf report. 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. It has enhances the bonding between the coarse aggregate and cement paste. The literature search yielded information from numerous laboratory studies of the material properties of polypropylene fiber reinforced concrete pfrc. To make concrete able to absorb tension force be use reinforced concrete.
Evaluation of ultrahighperformance fiber reinforced concrete celik ozyildirim, ph. Fly ash is the fine powder produced as a product from the combustion of pulverized coal. Application of coir fibres as concrete composites for. Masterfiber f 100 enhanced fibrillated polypropylene fiber is a unique technology that creates additional micro fibrils that are attached to the principle fibrillated network. 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. 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 mixing time of fibrillated or tape fibers should be kept to a minimum to avoid possible shredding of the fibers. 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. High performance, fiber reinforced conc rete, special loadings and structural applications b. Grace microfiber is a synthetic fiber for concrete, manufactured from 100% virgin polypropylene in a monofilament form. Naturally occurring asbestos fibers and vegetable fibers, such as sisal and jute, are also used for reinforcement. They are available in various sizes and lengths of monofilament and fibrillated polypropylene. Ultra high strength fiber reinforced concrete using aramid. The type of polypropylene fiber recommended by manufacturers for paving applications is the collated fibrillated fiber.
Test results for concretes obtained by using water blended with yeast granules are also reported in this paper. It includes fundamental principles of frc, a glossary of terms, a description of. The change in the percentage of polypropylene fiber had increment in compressive, flexural and split tensile strength of pervious concrete when compare with similar. Fiber reinforced concrete frc is concrete made primarily of hydraulic cements, aggregates, and discrete reinforcing fibers. Study of strength of polypropylene fiber reinforced concrete. Frc can also significantly lower materials and labor costs compared to rebar or wire mesh reinforced concrete. Polypropylene fiber a synthetic fiber formed from a polypropylene melt. In particular, polypropylene fibers ppf are widely used in structural concrete to. These fibers are manufactured polymerbased materials such as polypropylene, nylon, or polyethylene. The swedish concrete association published a report on steel fibre reinforced concrete in 1995. Glass fiber reinforced polymer gfrp is a fiber reinforced polymer made of a plastic matrix reinforced by fine fibers of glass.
The fibers improve crack control and preserve post cracking structural integrity ofmembers. Polymer cement is a piece of gathering of cements that utilizes polymers to supplement bond as a cover. Various type of fiber is used such as glass, carbon, steel, asbestos, polyester and polypropylene. The literature showed that, for the low fiber volumes 0. Polypropylene fiber in concrete mix design is used for multiple purposes that includes rigid pavement, selfcompacting concrete and other applications. Such concrete is also used in retrofitting and repairing the covering of concrete structure, tunnels, etc. As soon as some tension is developed, it will lose its stiffness. Pdf polypropylene fiber reinforced concrete researchgate.
The results show that incorporating polypropylene fibers improves mechanical properties. Reinforcing concrete by adding fibers the concrete network. Fiber reinforced concrete are of different types and properties with many advantages. Principal research scientist in cooperation with the u. Sustainable fiber reinforced concrete for repair applications. Influence of polypropylene fiber on strength of concrete american. Study on addition of the natural fibers into concrete saandeepani vajje, dr. Pdf experimental investigation on polypropylene fiber. The sorts incorporate polymerimpregnated solid, polymer cement, and polymerportlandbond concrete. This fiber reinforced concrete solution saved the contractor significant labor, time and money if compared to installing reinforcement.
The positive interactions between polypropylene fibers lead to the lowest drying shrinkage of fibrous concrete. Thus unlike plain concrete, a fiber reinforced concrete specimen does not break immediately after initiation of the first crack. Pdf use of fiber reinforced concrete for concrete pavement. Cellulosic fiber reinforced cementbased composites. Fiber reinforced concrete free download as powerpoint presentation. The aim of the study was to achieve maximum strength of concrete by using optimum weight of polypropylene fibers. Apart from its origin, the reinforcements based on cellulose fibers can be classified by the function of their form.
Thousands if individual fibers are then evenly dispersed throughout the concrete during the mixing process creating a matrixlike structure. But all these measures do not improve the post cracking behavior of concrete. Fiber reinforced concrete reinforced concrete concrete. What are the disadvantages of fiber reinforced concrete. Design of fibre reinforced concrete beams and slabs. Fiberreinforced concrete seminar ppt with pdf report. Experimental evaluation of compressive and flexural. If fibers are too long, uniform distribution of the fibers becomes difficult. This ppt is for comparative study of fiber reinforced concrete and plain cement concrete. Final concrete performance the effects of polypropylene fibre concrete in its plastic state lead to other advantages in its hardened. Fiber reinforced concrete an overview sciencedirect topics.
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. Fatigue strength of fibrillated polypropylene fiber reinforced concretes m. Two kinds of fiber that very often used in the concrete are. 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.
Pdf using polypropylene fibers in concrete to achieve maximum. Fiber glass is a lightweight, strong, and robust material used in different industries due to their excellent properties. Fiber reinforced concrete frc is concrete consisting fibrous material which increases its structural purity. Evaluation of ultrahighperformance fiberreinforced concrete. Polypropylene fibers are added to concrete during batching. The steel fibers had an elastic modulus of 210 gpa, a length of 25 mm, and a diameter of 0. Our concrete fiber is not affected by concrete s alkali environment and will not suffer late age strength loss embrittlement. The use of fiber does not have a major effect on the compressive strength of the concrete. Fiber reinforced concrete is one of the fastest growing segments in the concrete industry. It displays good heatinsulating properties and is highly resistant to acids, alkalies, and organic solvents. Pdf performance of polypropylene fibre reinforced concrete.
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