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frc
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FIBER REINFORCED CONCRETE
(FRC)
Created and presented by:Baquero, Victor
Brown, ChrisThielbar, Trenton
What is fiber reinforced concrete
A concrete consisting of, cement, water, fine and coarse aggregate, along with discontinuous fibers.
Types of fibers
Types of fibers include Steel Plastic
Polyester, Polypropylene, Polyethylene Glass Natural materials
Wood cellulose, Bamboo, Elephant grass
All are available is different shapes sizes and materials
Types of fibers
Steel Shapes
Steel fibers are adhered together before mixing and separate while mixing to ensure uniform distribution
Advantages of using fiber reinforced concrete versus plain
concrete
Improves toughness of concrete Flexural strength is improved by up to 30%
by decreasing the propagation of cracks Improves tensile strength More economical than steel reinforcement Less prone to corrosion Gives an alternative way to reinforce
concrete other then traditional steel rebar
Corrosion
Unlike rebar there is not galvanic cell created in the fibers
No anodic/cathodic reaction pH level of concert protects steel fibers
from corrosion
Applications
Applications include: Pipes Tilt-up Panels Shotcrete Slabs Counters tops Bath tubs Tiles
Properties
Durability Made with a high content of cement and
low water to cement ratio When properly compacted and cured,
concrete with steel fibers is very durable Workability
Affects workability Compensate by adding superplasticizers
Properties
Compressive behavior of steel FRC Keeps integrity after failure Strength slightly enhanced
Tensile behavior increase tensile strength
Has little effect on the modulus of elasticity, drying shrinkage, and creep
Production
Production is guided and controlled mainly by the American Concrete Institute, ASTM, and various building codes
Production involves 5 Steps1. Determine typical Uses and Specifying
FRC2. Materials3. Mixture Proportioning4. Batching, Mixing, Delivery and Sampling5. Placing and Finishing
Summary
Fiber reinforced concrete is one of the oldest methods for reinforcing concrete
The main purpose of fiber reinforcement is to increases its structural integrity and improve flexural behavior
There are many different types of fiber that can be used for concrete reinforcement.
Is an economical way to reinforced concrete compared to regular steel.
References
Mamlouk, Michael, and John Zaniewski. Materials for Civil and Construction Engineers. Second Edition. N.J.: Pearson Hall, 2006. 576. Print
Mehta, P.K., and P.J.M Monteiro. "Fibers in Concrete." University of Californa, Berkeley, 04,May,2006. Web. 1 Dec 2010. <http://www.ce.berkeley.edu/~paulmont/241/fibers.pdf
Nemati, Kamran. "Progress in Conctet Technology: Fiber Reinforced Conctete (FRC)." University of Wahington. University of Washington, Seattle, Wahington, USA. Spring 2010. Lecture.
SMiRT 19, . "WOKSHOP ON: Fiber Reinforced Concrete." ASMiRT, 17,August,2007. Web. 1 Dec 2010. <http://www.iasmirt.org/iasmirt-2/SMiRT19/SMiRT19_WH3_Tatnall.pdf>.