GLASS FIBER REINFORCED CONCRETE

(GFRC)

Created and presented by:M.P.Vishnu Prasadk.BharathV .G. Nethajik.Mohamed Mosheen

Guided by Mrs.Anuradha.M.E.,

AIM

To construct a structural element using high strength glass fibre reinforced concrete

OBJECTIVE

In this project, an attempt is made to introduce glass fiber to reinforce the concrete and to find the effect of glass fiber Reinforced concrete.

To study the effect of concrete when glass fiber introduced with varying percentage like 0.5%, 1%, 1.5%, 2%.

What is fiber reinforced concrete

A concrete consisting of, cement, water, fine and coarse aggregate, along with discontinuous fibers.

Types of fiber

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 glass 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

GFRC

LITERATURE REVIEW S. C. PATODI, C. V. KULKARNI (2012) published a paper

on Performance Evaluation Of Hybrid Fibre Reinforced Concrete Matrix .Hybrid fibre reinforced concrete (recron 3s and cripped steel fibre).

P.V.KOTESWARA RAO ETAL (2012)published a paper on Performance ofRecron-3sFibrewith Cement Kiln Dust inExpansive Soils. Compressive strength of clay soil increases seven times with admixtures stabilization.And nine times increases for admixtures with fibremodification of fibre-polypropylene. Test conducted on clay soil gives good result in addition of fibre.

MURALI.G ET AL - (2012) published a paper on Experimental Investigation on Fibre Reinforced Concrete Using Waste Material. Waste such as material-lathe waste, tins and soft drink bottle. The wastes are deformed into 3mm width and 10mm length. Increases compressive strength by 41.25% and tensile strength by 40.87% using M25 concrete.

JAIN D & KOTHARI A -(2012)published a paper on Hair FibreReinforced Concrete. He used human hair which has high tensile strength which is equal to copper wire. He did experiment on cube and beam with various % of human hair fibre. When M-25 concrete with 1.5% hair is compared with the plain cement concrete, it is found that there is an increase of 11% in compressive strength and 4% in flexural strength.

R. KANDASAMY ET AL - (2011) published a paper on Fibre Reinforced Concrete Using Domestic Waste Plastics as Fibres. Studies include compressive strength and flexural strength by M20 concrete. Polythene fibre was added to a 7

dosage of 0.5% of weight of concrete. Compressive strength increased by 20% and tensile strength increased by 26%.

RANA A. MTASHER - (2011) published a paper on Strength Prediction of Polypropylene Fibre Reinforced concrete. He used Polypropylene fibre at a dosage rate of 0.4, 0.8,1, 1.5.Increases compressive strength by 65% and flexural strength by 55%.

S. BILLINGTON ET AL – (2010) published a paper on Effect of Hybrid Fibre Reinforced Concrete Composites on Confinement. Hybrid fibre reinforced concrete is used. Composites incorporate both microfibres and macrofibre into the concrete mix. Increases toughness, ductility, tensile strength and crack resistance

CHANDRAMOULI K ET AL - (2010) published a paper on Strength Properties of Glass Fibre Concrete. Study the effect on compressive, splitting tensile and flexural strength on M20, M30, M40 and M50 by use of glass fibre. Reduction in bleeding by adding of glass fibre. 20% Compressive strength increases and 15% Split tensile and flexural strength increases.

D. JOTHI - (2008) published a paper on Application of Fibre Reinforcement Concrete Technique in Civil Constructions. Deterioration of concrete structure due to steel corrosion polyester fibre recron is used as repair material. Fibre increase compressive strength by22.2%, splitting tensile strength by 32.7% and flexural strength by 6.6% even improves cracking deformation.

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 Concrete 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 super plasticizers

Properties

Compressive behavior of steel GFRC 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 FRC

2. Materials

3. Mixture Proportioning

4. Batching, Mixing, Delivery and Sampling

5. 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 Concrete Technology: Fiber Reinforced Concrete (FRC)." University of Washington. University of Washington, Seattle, Washington, USA. Spring 2010.

SMiRT 19, . "WOKSHOP ON: Fiber Reinforced Concrete." ASMiRT, 2007. Web. 1 Dec 2010. http://www.iasmirt.org/iasmirt-2/SMiRT19/SMiRT19_WH3_Tatnall.pdf