Fiber Reinforced concrete ( FRc )
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Transcript of Fiber Reinforced concrete ( FRc )
FIBER REINFORCED CONCRETE
(FRC)Created and presented by:
Baquero, VictorBrown, Chris
Thielbar, 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 grassAll 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
PCC
FRC
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>.