Fibers include steel fibers, glass fibers, synthetic fibers and natural fibers each of which lend varying properties to the concrete. Fiber reinforced concrete frc is a new structural material which is gaining increasing importance. It has excellent flexural strength and impact resistant properties. In this study, these two types of fibers were used simultaneously to improve the performance of the ac mixtures.
The results illustrated that glass fiber reinforced ac and pp fiber reinforced ac treatments had superior performance compared to other fiber reinforced samples. What are the disadvantages of fiber reinforced concrete. Astm c 116, standard specification for fiber reinforced concrete, outlines four 4 classifications for fiber reinforced concrete. Introduction to gfrc glass fiber reinforced concrete. Gfrc panels consist of a 1 thick solid concrete skin. The main standards for fiber reinforced concrete are astm c 116 and en14889. However, steel also has its disadvantages, such as its low resistance to corrosion and the resulting limited lifetime, which has lead engineers to look for alternative solutions. Glass fibers were first used to reinforce cement and concrete in russia. Reinforced concrete adds either steel reinforcing bars, steel fibres, glass fibres, or plastic fibres to carry tensile loads. The usefulness of fiber reinforced concrete frc in various civil engineering applications is indisputable. Glass fiber reinforced concrete is, well, pretty much exactly what it sounds like. If, instead of the polymer, we use portland cement and sand, the resulting material is glass fiber reinforced concretegfrc or sometimes grc the brits call it glassfibre reinforced concrete. Because of the flexibility in methods of fabrication, fiber reinforced concrete can be an economic and useful construction material.
Gfrc can be formed into ornate shapes, and its light weight provides many benefits for high rise buildings. Glass fiber reinforced concrete glass fiber reinforced concrete gfrc can be. 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. High density concrete made of astm c 150 portland cement, crushed stone, silica sand, and polymers reinforced with continuous filament glass fiber mat and structural reinforcing as required. Fiber reinforced concrete overview for concrete pavement. The present paper outlines the experimental investigation conducts on the use of glass fibres with structural concrete. Steel fiber, concrete, properties, crack, ductility, technology. In recent times, glass fibres have also become available, which are free from corrosion problem associated with steel fibres.
The laminate form is the most common in structural applications. Properties and applications offiber reinforced concrete faisal fouad wafa associate professor, civil engineering department, faculty ofengineering, king abdulaziz university, jeddah, saudi arabia. Gfrc acts as an architectural finish to structural columns and slab edges while providing a highly durable, low vapor barrier to the underlying concrete. Now, why would we wish to add such fibres to concrete. In slabs on grade, mining, tunneling, and excavation support applications, steel and synthetic fiber reinforced concrete and shotcrete have been used in lieu of welded wire fabric reinforcement. Gfrc glass fiber reinforced concrete projects by willis. Review on the performance of glass fiber reinforced concrete. In this way, glass fibre reinforced concrete gfrc was started to produce for the satisfaction of different demands.
Mainly the studies and research in fiber reinforced concrete has been devoted to steel fibers. The product is also known as glassfibre reinforced concrete or grc in british english. Fiberreinforced concrete seminar ppt with pdf report. Glass fiber reinforced concrete gfrc comprises hydration products of cement, or cement plus sand, and the glass fibers. This page contains fiberreinforced concrete frc seminar and ppt with pdf report. Cementitious matrices are the fragile materials that possess a low tensile strength. Design of fibre reinforced concrete beams and slabs. Pimplikar conducted an experiment as the glassfiber reinforced concrete grc is a material made of a cementatious matrix composed of cement, sand, water and admixtures, in which short length glass fibers are dispersed. The glass fiber reinforced concrete showed almost 20 to 25 % increase in compressive strength, flexural and split tensile strength as compared with 28 days compressive strength of plain concrete. This material is very good in making shapes on the front of any building and it is less dense than steel. Structural glass fiber reinforced concrete for slabs on ground. Fiber reinforced concrete has so far been successfully used in slabs on grade.
Energy considerations for the 193 design of enclosure systems are excluded from this scope. Based on ordinary concrete, fiber reinforced concrete is made by evenly scattering the short and fine dispersed fibers into ordinary concrete. The glass fiber used is alkaline resistant as glass fiber are susceptible to alkali which decreases the durability of gfrc. In addition, the character of fiberreinforced concrete. However they were corroded by the highly alkaline portland cement matrix. Fiberreinforced concrete frc seminar and ppt with pdf report. Drawings and general provisions of the contract, including general and supplementary conditions and division 01 specification sections, apply to this section. Glass fiber reinforced concrete or gfrc is a type of fiberreinforced concrete. Fiber reinforced concrete an overview sciencedirect topics. Gfrc is a specialized form of concrete with many applications. Fiber reinforced concrete is used to improve the performance of concrete cracking and shrinkage problems. Hybrid reinforcement of asphaltconcrete mixtures using. This guide specification is intended to be used as a basis for the development of an office master. Glass fiber reinforced concrete glass fiber reinforced concrete gfrc is a.
Glass fiber reinforced cement or concrete gfrc, made by the sprayupprocess, have been used to construct wall panels. Structural glass fiber reinforced concreteconceptual alignment the term glass fiber reinforced concrete is often used in civil engineering representative of a whole group of composite building materials and has to be differentiated with respectto material behavior 5. Properties and applications offiber reinforced concrete. Steel and glass fibers addition in concrete pipes and manholes improves strength, reduces thickness, and diminishes handling damages. Glass fibers are used are used as reinforcement for concrete. Glass fiber concretes are mainly used in exterior building facade panels and as architectural precast concrete. Drawings and general provisions of the contract, including general and supplementary conditions and division 1 specification sections, apply to this section. Mumtaj hence, an attempt has been made in the present investigation to study the. He is a member of aci committees 363, highstrength concrete. Concrete, as most folks know, is strong under compression but weak under tension, and is commonly strengthened by casting it around, e. 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. Naturally occurring asbestos fibers and vegetable fibers, such as sisal and jute, are also used for reinforcement.
Type i steel fiberreinforced concrete or shotcrete astm a820 type ii glass fiberreinforced concrete or shotcrete astm c1666. In the 1940s, potential of glass as a construction material was realized and improvement continued with the addition of zirconium dioxide in 1960s for harsh alkali conditions. Glass fiber reinforced concrete gfrc or grc is a type of fiber reinforced concrete. Mechanical properties of glass fiber reinforced concrete. Work in this section is subject to requirements of the contract documents including the general conditions, supplementary conditions, and applicable portions of divisions 0 and 1. The gfrc i use is a composite of portland cement, silica sand, forton vf774, liquefaction compound, vitro minerals vcasmicronhs, water, and alkaliresistant chopped glassfiber strands.
Introduction fibre reinforced concrete frc may be defined as a composite materials made with portland cement, aggregate, and incorporating discrete discontinuous fibres. Introduction 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. Glass fibre reinforced concrete use in construction. Glass fibre reinforced concrete or gfrc is a type of fibrereinforced concrete. Gfrc glass fiber reinforced concrete the concrete network.
The material used to make boats or other products, although called fiberglass, is really glass fiber reinforced plasticglass fibers in a polymer matrix. Section 03491 glass fiber reinforced concrete part 1 general 1. The addition of fibers randomly distributed in these matrices improves their resistance to cracking, substantially. As soon as some tension is developed, it will lose its stiffness. It contains short discrete fibers that are uniformly distributed and randomly oriented. Class a fire and smoke rated composite material made using portland cement, sand, aggregate and alkali resistant glass fiber. Many gfrc experts will also use silica fume, metakaolin, or other pozzolans in their mix. Fiberreinforced concrete frc is concrete made primarily of hydraulic cements, aggregates, and discrete reinforcing fibers. Glass fiber reinforced concrete gfrc is a cementitious composite product reinforced with discrete glass fibers of varying length and size. Fiberreinforced concrete frc is concrete consisting fibrous material which increases its structural purity. Glass fiber reinforced concrete gfrc properties and. To enhance durability of materials, new generation of glass fibres directed to improvement process. As constructional material, steel has been a huge success story ever since the industrial revolution.
Fiberreinforced concrete frc is concrete containing fibrous material which increases its structural integrity. Glass reinforced concrete or gfrc is an engineered material with desirable qualities and multiple advantages compared to other types of concrete. What is glass fiber reinforced polymer gfrp we are. It holds short discrete fibers that are uniformly distributed and circumstances oriented. Synthetic of fiber synthetic fiberreinforced concrete uses plastic and nylon fibers to improve the concretes strength. This reduces the permeability of the concrete, making it more waterresistant and also reduces the alkalinity of the concrete, which means it doesnt affect the glassboth of. 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. This section includes glass fiber reinforced concrete gfrc panels, consisting of gfrc, panel frames, anchors, and connection hardware. What is gfrc, what are its benefits and what are its downsides. Glass fiber reinforced concrete glass fiberreinforced concrete uses fiberglass, much like you would find in fiberglass insulation, to reinforce the concrete. The purpose for the addition of short fibers is to improve the tensile strength and impactresistance and reduce the brittleness of concrete.
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