Also, the use of glass fiber reinforced polymer sheets as rear liners in. When the projectile hits the material, a compressive wave is initiated by the impact. Influences of fiber types on the scabbing of concrete slabs. The beam column joint has been analysed using stadd pro under seismic zone. The main objective of this paper is to enhance the concrete resistance against ballistic impact of high velocity projectile by using different combination layers from different materials as reinforcement for concrete and investigate their effect on the penetration depth of projectile and the resulted damage of concrete. Pdf resistance of ultra high performance fibre reinforced concrete. Erdcgsl tr1522 impact of steel fiber size and shape on. The m7f microplane model for fiber reinforced concrete is calibrated at the material level and then used to predict structural level behavior. Investigation of highvelocity projectile penetrating. Both conventionally reinforced and fiber reinforced concrete slabs were considered. In addition, the character of fiberreinforced concrete.
Since the mid 1800s steel reinforcing has been used to overcome this problem. Concrete mixtures with short steel fibers showed an optimal compromise. Fiberreinforced concrete frc is concrete consisting fibrous material which increases its structural purity. Common design of reinforced concrete elements to resist hard projectile impact is carried out by calculating their proper thickness utilizing existing formulas. Resistance of high performance fiber reinforced concrete. Study on polymer modified steel fiber reinforced concrete. Numerical analysis of projectile penetration and perforation. Steel fiber reinforced concrete faq when subjected to tensile stress, unreinforced concrete will crack and fail. Fiberreinforced concrete is concrete containing fibrous material which increases its structural integrity. This page contains fiberreinforced concrete frc seminar and ppt with pdf report. The results provide insights into optimal fiber reinforcement and potential strategies to further improve the properties of uhpcs, make fiber reinforced uhpcs more cost competitive. Few applications of sfrc are in the field of irrigation structures. This document is a companion report to overview of fiber reinforced concrete bridge decks, which summarizes the experience from existing bridge deck and bridge deck overlay construction projects that have employed frc materials.
Fiber reinforced concrete has small distinct fibers that are homogeneously dispersed and oriented haphazardly. Pdf the aim of this work is to describe the resistance of ultra high performance fibre reinforced concrete uhpfrc to projectile impact. Steel fiber, concrete, properties, crack, ductility, technology. Fibers suitable for reinforcing concrete have been produced from steel, glass, and organic polymers synthetic fibers. Based on lsdyna 3d finite element program and holmquist johnson cook hjc model, a numerical simulation research on a new type of fiber concrete reinforced by uhmwpe fiber against 12. Also, using a glass fiber reinforced polymer sheet, as a liner on the rear face of the plain concrete panel, to strengthen the panel was examined. Franzen department of civil and environmental engineering division of structural engineering concrete structures chalmers university of technology abstract.
Frc pavements overview pavement problems pavement design fiber options. Fibers include steel fibers, glass fibers, synthetic fibers and natural fibers each of which lend varying properties to the concrete. Therefore, in this study, presents results from an experimental study on the impact resistance of fiber reinforced concrete with fiber types by high velocity steel projectile test. 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. 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. Ultrahigh performance fiber reinforced concrete uhpfrc is currently one of the biggest challenging issues in modern concrete technology. Experimental investigation of projectile impact local damage. Fracture mechanics of concrete and concrete structures high performance, fiber reinforced conc rete, special loadings and structural applications b. Experimental results of fiber reinforced concretes subjected to high velocity projectile impacts by anderson et al. Experimental investigation of ultrahigh performance fiber.
In this article, the response of nine plain concrete panels to an impact of hard. One such example is ultrahigh strength fiber reinforced concrete ufc having excellent fluidity with a low waterbinder ratio, which achieves an ultra high compressive strength exceeding 180 nmm 2. Both the projectile and the plate are meshed with first order, reduced integration solid continuum elements c3d8r. Abstractultrahigh performance fiber reinforced concrete uhpfrc is currently one of the biggest challenging issues in modern concrete technology. Performance fiber reinforced cement composites with innovative slip hardending twisted steel fibers,international journal of concrete structures and materials, vol. What are the disadvantages of fiber reinforced concrete. Response of hybridfiber reinforced concrete slabs to hard.
Fiberreinforced concrete frc is concrete made primarily of hydraulic cements, aggregates, and discrete reinforcing fibers. Oct 18, 2016 in order to reduce the fracture of concrete on the rear side, the study of impact resistance of fiber reinforced concrete was performed. Current research and applications of fiber reinforced. Tae yi abstract the aim of this research is to evaluate the protecting performance of hybrid. For reinforced concrete structures, concrete materials subjected to impact. Performance observed during tests prompts sfrc as a prominent raw material for construction of lowrise concrete wall housing in.
Fiber reinforced concrete association frca is focused on. Based on the present findings and cost consideration, highstrength fiberreinforced concrete with a compressive strength of. Numerical analysis of projectile penetration and perforation of plain and fiber reinforced concrete slabs. Fiber reinforced concrete frc is concrete containing fibrous material which increases its structural integrity. Giant bamboo fiber reinforced epoxy composite in multilayered. Fiber reinforced concrete is used to improve the performance of concrete cracking and shrinkage problems. Continuous meshes, woven fabrics and long wires or rods are not considered.
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. The projectile in this simulation is a coldrolled steel ball of 5 mm diameter with an initial velocity specified in a direction normal to the plane of the plate. To predict the penetration depth of concrete targets, petry et al. Gfrc can be formed into ornate shapes, and its light weight provides many benefits for high rise buildings.
Steel fiber reinforced concrete provides superior resistance to cracking and crack propagation due to increased tensile strength in concrete structures. Fiberreinforced concrete frc examination of fractured specimens of fiberreinforced concrete shows that failure takes place primarily due to fiber pullout or debonding. As the following intermediate layer, lighter giant bamboo fiber reinforced epoxy composite plates were compared to plain epoxy plates and aramid fiber plies, all with the same. Fiber reinforced concrete has so far been successfully used in slabs on grade. Prediction of hard projectile penetration on concrete targets. Application of fiber reinforced concrete and concrete. Steel fiber reinforced concrete panels subjected to impact projectiles. Hookedend steel fibers having an aspect ratio of 60 with volume fractions of 1% and 2% were studied. Improving the resistance of concrete panels to hard projectile impact. Ballistic tests were conducted in mass with a front al 2 o 3 ceramic tile.
It holds short discrete fibers that are uniformly distributed and circumstances oriented. Abract an experiment is reported regarding the effect of using steel fibre reinforced concrete in exterior quarter scale corner beam column joints cast by using m 20 concrete. The impact resistance and mechanical properties of reinforced selfcompacting concrete with recycled glass fiber reinforced polymers. Concrete panels with compressive strengths within the range of 26 to 92 mpa subjected to impact by 23 mm hard projectile at velocities within the range of 270 to 348 ms were studied. Pdf ultrahighperformance fibrereinforced concrete under high.
High performance concrete matrix with compressive strengths over 110 mpa was reinforced with discrete steel fibers in five. He is a member of aci committees 363, highstrength concrete. The influence of hybrid fibers in improving the safety level of reinforced concrete slabs against impact loads has. Frca members represent major manufacturers, suppliers and marketers of the worlds most popular fiber reinforcement products. The transient impact load on the instrumented striking head, accelerations of the slab, steel strains, and concrete strains, were all recorded using a highspeed data acquisition system. Jul 25, 2016 in the first study, perforation experiments on rsc and hsc for varied impact velocities are carried out, and the exit velocity is compared with the available experimental data. An experimental investigation of resistance of high performance fiber reinforced concrete against deformable and nondeformable projectile impact at high velocities was conducted in the framework of this masters thesis. In the experiment, local damage was inflicted by impact of defined projectiles on specimens made from normal strength concrete nsc, steel fiber reinforced concrete frc, ultrahigh performance concrete uhpc and ultrahigh performance fiber reinforced concrete uhpfrc with different fiber content. Evaluaprotecperformance osapplicabilithybrid fiber. The fiber reinforced concrete association frca is focused on furthering the development, knowledge and market of fiber reinforced concrete frc to manufacturers, suppliers and marketers within the concrete industry.
Behavior of fiberreinforced concrete slabs under low. A combined dynamic constitutive model, describing the compressive and tensile damage of concrete, is implemented. Ultrahighperformance fibrereinforced concrete under highvelocity projectile impact. Thought its study is not yet completed steel fibers are widely used as a fiber reinforced concrete all over the world as it ensures less cracking than normal concrete. Reliability assessment of hfrc slabs against projectile.
Now, why would we wish to add such fibres to concrete. Properties and applications offiber reinforced concrete 51 high aspect ratio were found to have improved effectiveness. Resistance of highstrength concrete to projectile impact m. Because of the flexibility in methods of fabrication, fiber reinforced concrete can be an economic and useful construction material. Prediction of hard projectile penetration on concr ete targets hyeonjong hwang1, sanghee kim2, and thomas kang3. Several useful documents on fiber reinforced concrete frc have been developed by aci committee 544, fiber reinforced concrete, including a design guide, aci 544. Fiber reinforced concrete frc examination of fractured specimens of fiber reinforced concrete shows that failure takes place primarily due to fiber pullout or debonding. Experimental and numerical investigations on projectile. This paper emphasizes on polymer modified steel fiber reinforced concrete, a recent advancement in the field of reinforced concrete. Mars, modeling and analysis of the response of structures users manual. Fiber reinforced concrete has been improved flexural and tensile performance by the crosslinking action of the fiber, and the scabbing on the rear side by the projectile impact was inhibited. The frca fips fibers in practice are a collection of short, specific topics related to the use of fiber reinforcing materials for concrete. The impact resistance and mechanical properties of reinforced selfcompacting concrete with recycled glass fiber reinforced polymers m mastali, a dalvand, a sattarifar journal of cleaner production 124, 312324, 2016.
It contains short discrete fibers that are uniformly distributed and randomly oriented. Because of their high strength and energy dissipation capacity, aramid fibers are used widely as the material of choice for body armor and similar applications. The usefulness of fiber reinforced concrete frc in various civil engineering applications is indisputable. Properties and applications offiber reinforced concrete. Introduction fibre reinforced concrete frc may be defined as a composite materials made with portland cement, aggregate, and incorporating discrete discontinuous fibres. The objective of this research is to better prepare this concrete. Pdf download for improving the resistance of concrete panels to hard. Applications of steel fiber reinforced concrete it is known that plain cement concrete does not have good tensile properties to resist flexure in structural members. As soon as some tension is developed, it will lose its stiffness. Fiber reinforced concrete frc is a new structural material which is gaining increasing importance. Improving the resistance of concrete panels to hard. Fiberreinforced concrete seminar ppt with pdf report.
Fiber reinforced concrete overview for concrete pavement. Steel fibers are a discontinous, 3dimensionally orientated, isotropic reinforcement, once they are mixed into the concrete. Design of fibre reinforced concrete beams and slabs. Resistance of ultra high performance fibre reinforced concrete to. Steel fiber reinforced concrete is an alternative to traditional reinforced concrete for certain application areas.
In the first study, perforation experiments on rsc and hsc for varied impact velocities are carried out, and the exit velocity is compared with the available experimental data. Application of fiber reinforced concrete and free download as powerpoint presentation. Numerical analysis of projectile penetration and perforation of plain and fiber reinforced concrete slabs jovanca smith1, and gianluca cusatis2 1lecturer, department of civil and environmental engineering, the university of the west indies, st. Thus unlike plain concrete, a fiberreinforced concrete specimen does not break immediately after initiation of the first crack. Wide varieties of firearms can be classified by barrel length hand gun, rifle, barrel type, loading mechanism automatic or manual, firing.
Dependence of fracture size effect and projectile penetration on fiber content of frc to cite this article. Fiber reinforced concrete is a type of concrete that includes fibrous substances that increase its structural strength and cohesion. The sharp projectile nose resulted in a deeper penetration because of the concentration of the impact force. A numerical study on the damage of projectile impact on. The swedish concrete association published a report on steel fibre reinforced concrete in 1995. Aug 01, 20 read response of hybrid fiber reinforced concrete slabs to hard projectile impact, international journal of impact engineering on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Fiber reinforced concrete types, properties and advantages. Gfrc glass fiber reinforced concrete projects by willis. As a composite system, the reinforcing steel is designed to carry the tensile loads. Numerical analysis of projectile penetration and perforation of plain. Naus and williamson qualitatively demonstrated that fiber reinforced concrete was more resistant to penetration and to repeated impacts by small projectiles than plain concrete. The projectile in this simulation is a coldrolled steel ball. Current research and applications of fiber reinforced concrete composites in india v. Fiber reinforced concrete association fibers in practice.
The uhpfrc represents a concrete with improved durability and strength, which is significantly higher than in conventional normal strength concrete. Damage and failure for fiber reinforced composites, section 24. International journal for numerical and analytical methods in geomechanics. The fiber reinforced slabs have a better performance concerning spalling and scabbing. Ultra high strength fiber reinforced concrete using aramid. Fiber reinforced concrete overview for concrete pavement and overlays general overview of fibers used for concrete pavements with an emphasis on macro fibers and their effect on concrete properties and pavement construction. The second study focuses on ecc, where multiple impact of steel and plastic fiber reinforced concrete panels are explored. Ultra high strength fiber reinforced concrete using aramid fiber. Balasubramanian cement and concrete matrices reinforced with randomly oriented short fibers are finding increasing applications in both precast and in situ concrete construction.
Glass fiber reinforced concrete is made of a 1 thick cementitious skin, reinforced with alkali resistant glass fibers, and attached to a metal stud frame system. Sep 24, 2018 in the present study, a probabilistic procedure is presented for estimating the reliability of hybrid fiber reinforced concrete hfrc slabs against the impact of hemispherical nose projectiles considering uncertainties involved in the material, geometric and impact parameters. Naturally occurring asbestos fibers and vegetable fibers, such as sisal and jute, are also used for reinforcement. Reinforced concrete hsfrc must be a wellsuited material for protection against. What are applications of steel fiber reinforced concrete. Strength of fiber reinforced concrete 1 this speci. Fiberreinforced concrete frc is concrete containing fibrous material which increases its structural integrity. This study evaluates the fracture properties and rearface strain distribution of nonreinforced and hooked steel fiber reinforced concrete panels penetrated by projectiles of three different nose shapes. Properties and applications offiber reinforced concrete faisal fouad wafa associate professor, civil engineering department, faculty ofengineering, king abdulaziz university, jeddah, saudi arabia. The study confirmed the superior impact resistance of steel fiber reinforced concrete. Fiberreinforced concrete frc seminar and ppt with pdf report. Resistance of highstrength concrete to projectile impact. Itwas shown that for thesamelengthanddiameter,crimpedendfibers can achievethesamepropertiesas straight fibers using 40 percent less fibers s. Thus unlike plain concrete, a fiber reinforced concrete specimen does not break immediately after initiation of the first crack.
Fibers used are steel fibers, synthetic fibers, glass fibers, natural fibers, asbestos fibers and carbon fibers. The ber reinforced concrete showed bigger transitional size in type 2 size e ect. Fiber reinforced concrete are of different types and properties with many advantages. The cracking pattern and the damage due to impact were examined. Projectile impact on a carbon fiber reinforced plate. Fip 8 design and specification of fiberreinforced concrete. Fgrc slabs under drop weight and projectile impacts. Numerical simulation of projectile penetration into uhmwpe. 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. The ace 1946 evaluated the allowable concrete target thickness that limits. 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. The study on the introduction of effect of steel fibers is not still promising as steel fiber reinforced concrete has to be used for sustainable and longlasting concrete structures. Materials free fulltext strain behavior of concrete. Dependence of fracture size effect and projectile penetration on fiber.
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