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Reinforcement of cement mortar and concrete
is a 30 years old concept, widely accepted
and practiced in USA, Europe, Japan, Korea
and far East.
GLUED STEEL FIBRES
Glued Steel Fibres, an alternate concrete
reinforcing material are high tensile steel
wires with hooked ends, glued together
for compactness and uniform dispersion in
concrete.
Cementious material Steel fi bres
Crack extension mode
ConcreteAggregate
ConcreteAggregate
– Improved fl ex resistance with shear strength.
– High performance with tenacity.
– Crack resistance.
– Improved impact resistance.
– Resistance to cyclic loads.
– Improved ductility
– Ability to bear load after cracking.
– Corrosion and Erosion control
– Bulk savings of reinforcing steel bars and cement.
– Simplifi es construction method.
– Expedites construction progress.
ADVANTAGE > FIBREXTM
Performance of steel fi bres depend on the following parameters– Tensile Strength
– The anchorage (Type and Effi ciency)
– Aspect Ratio (Length/ Diameter)
– Mixing effi ciency
high quality concrete reinforcing material
FIBREXTM conforms to ASTM A 820 & EN 14889 – 1:2006 standards
FEATURES > FIBREXTM
Characteristics Improvement over Normal Concrete (without fi bres)
Compressive Strength up to 30%
Cracking and Flexural strength 100% – 200%
Fatigue Resistance 100%
Resistance to impact 100% – 300%
Shock absorption 15 times
Abrasion and Corrosion resistance 40% – 50%
Ductility Several times
Improvement in physical properties of Glued Steel fi bre reinforced concrete over normal concrete.
Reinforced Glued Steel fi bers vis-à-vis other type steel fi bers: With the high performance of tensile strength, large aspect ratio and uniform separation in the concrete, reinforced glued steel fi ber concrete can bear more loads and absorb more deformation.
Crack control mechanism of reinforced glued steel fi ber: The hooks at two ends ensure optimum anchorage between steel fi bers and concrete, which enable the glued steel fi bers to transfer and distribute stress effectively. The fi bers act as tiny bridges and control the crack initiation and extension in the concrete.
Improving durability for the concrete: Since the sectional area of reinforced glued steel fi bers is very small and the area and volume of concrete is comparatively large, it easily forms alkaline membrane around the glued steel fi bers which prevents eroding. This minimizes the cracking of concrete, so as to drastically reduce the corrosive substances in contact with glued steel fi bers and avoid its rusting. Thus it improves the durability of concrete and extends its life span.
EVEN SPREAD
Due to its unique nature, the Glued
Steel fi bers separate in the process
of mixing and spread evenly in the
concrete within three minutes. On
the other hand, loose-type steel
fi bers will reunite during mixing.
HIGH TENSILE STRENGTH
Average tensile strength of glued
steel fi ber is more than 1100 Mpa
which ensures that glued steel fi ber
in the concrete will not be broken
under strong force. The hooked
ends ensure optimum anchorage
between glued steel fi bers and
concrete, which effect in utilization
of glued steel fi ber’s high tensile
strength to maximum
HIGH ASPECT RATIO
Under the condition of same weight,
higher aspect ratio produces more
glued steel fi bers. Hence there
are more points of action of glued
steel fi bers inside the same volume
of concrete. Thus glued steel fi ber
concrete members have higher load
bearing capacity.
MINIMUM GLUED STEEL
FIBERS DOSAGES
Due to the high tensile strength
and large aspect ratio for reinforced
glued steel fi bers, it needs much less
reinforced glued steel fi bers than
other loose steel fi bers products
under the same engineering
conditions.
ENGINEERING CHARACTERISTICS
Improving Impact Resistance and Shearing Strength: Since the reinforced glued steel fi ber is distributed uniformly within the concrete, when the concrete is loaded or subject to impact, it is able to distribute the stress uniformly and reduce stress concentration.
Improving Wearability and Fatigue Resistance of Concrete: Reinforced glued steel fi ber concrete has high performance of wear ability and fatigue resistance. It is especially suitable for the project position subject to serious impact damage and high fatigue architectural structure.
Convenience of Construction: Unlike wire mesh and re-bars, which are diffi cult to fi x and position, reinforced glued steel fi ber can be easily mixed with concrete, offering savings on labor and time.
Reducing Material Consumption: Maintaining equal performance, thickness of slabs & fl ooring can be reduced by 20-25%, against conventional concreting methods. This is attained by high tensile strength and even spread of glued steel fi bers in concrete. Signifi cant cost saving is achieved by using glued steel fi bers.
APPLICATION > FIBREXTM
How does it work?
Fibres in SFRC lock the coarse aggregates together
and prevent propagation and opening of micro
cracks.
Fibres inhibit crack growth by transferring tensile
forces, effecting in low stress concentrations.
Stress distribution. Fibres carry the load across cracks reducing the stressconcentration at the crack tip. This limits crack propagation relative toplain or mesh reinforced concrete.
Fibre Reinforced
Unreinforced
Steel fi bers at contraction joints
– Provides load transfer by improving & maintaining
aggregate interlock.
– Joint fi llers stay in place better.
Brittleness
Ductility
The Normal Brittle Concrete
Ductile, Durable & Tough Concrete on addition of Fibrex® Glued Steel Fibres
Conventional reinforcement like rebars & mesh do not cover the entire concrete mass. The edges are susceptible to cracking and chipping. Fibers spread throughout the entire concrete mass, providing reinforcement to even edge & corners of structure.
Load
Displacement5 10
Plain concrete
FIBREXTM reinforced
P(N)
B(mm)
• Large scale industrial fl oors
• Column beam joints
• Sprayed concrete for tunnel and quay
• Road and bridges surface application
• Architectural precast elements
• Dam structure and dam surface repair
• Water retaining structures
• Roads and Airport runway construction
• Explosion-proof, anti-seepage and high strength precast elements or structural members, nuclear containment
• Military projects
MIXING PROCEDURE
Glued steel fi bres can be added during
or after the batching of concrete,
using conventional mixing equipment.
Protective equipment should be used
while handling the product. Conveyors
and dispensers may be used to add
fi bres to the mixer at ready mix plant.
After addition of fi bres, suffi cient mixing
time should be given, to have uniform
distribution of fi bres throughout the
mix. Super plasticizers may be used
and can be advantageous.
Use of FIBREXTM dosage of 15 Kg/m3 reinforces and reduces fl oor thickness by 20-25% which results in an increase in potential of steel fi bre usage in concrete fl ooring.
Applications ____________________________________
Flooring for warehouses Factory fl ooring Commercial buildings Garages Residential buildings Porticos Ports Aircraft hangars Car parks
Method ________________________________________
Strengthens concrete at initial stages of crack development.
Fibres control propagation of cracks, thus preventing development of hair line cracks in to major cracks.
Unlike rebar and mesh, fi bres are evenly distributed, leaving no weak links in structure.
It is possible to use thinner slab due to higher fl exural strength. Thickness can be reduced (typically 20–25%).
Can withstand wear and tear and absorb higher loads (typically 50–100%).
Benefi ts ________________________________________
Savings in material and labour cost by eliminating conventional reinforcement.
Reduced cracking implies longer life. Prevent water seepage. Reduced slab thickness leads to less material usage.
Simple to construct and expedite construction. Reduced spalling at joints and edges. Higher impact strength and reduced fatigue effects in longer service life and less maintenance costs.
SLABS & FLOORING
Use of FIBREXTM Glued Steel Fibres results in better seismic and fi re safety, durability and aesthetics.
Applications ____________________________________
Flooring Car parks Foundation Beam and column joints Driveways Water tanks Swimming pools Weather shades Domes
Method ________________________________________
Increases initial crack strength of concrete. Fibres control propagation of cracks, preventing development of hair line cracks in to major cracks.
Unlike rebar and mesh, fi bres are evenly distributed, leaving no weak links in structure.
It is possible to use thinner slab due to higher fl exural strength. Thickness can be reduced (typically 20–25%).
Can withstand wear and tear and absorb higher loads. (Typically 50 to 100%).
Even surfaces.
Benefi ts ________________________________________
Save on material and labor by eliminating conventional reinforcement.
Reduced cracking implies longer life. Prevent water seepage. Reduced slab thickness leads to less material usage.
Simple to construct and expedite construction. Reduced spalling at joints and edges. Higher impact strength and reduced fatigue effects in longer service life and less maintenance costs.
Better fi nish and aesthetics.
RESIDENTIAL APPLICATION
Eliminate re-bars and mesh to achieve saving in production. Reduce weight of structures and damages during handling and usage.
Applications ____________________________________
Precast architectural and structural elements Railway sleepers Septic tanks Sewer pipes Cable ducts Prefab cabins Housing walls Rainwater collection
Method ________________________________________
Higher impact strength. Eliminate mesh and re-bars. Offers superior and uniform reinforcement even to edge and corners of concrete.
Benefi ts ________________________________________
Superior product – yet save on time and money. Eliminate mesh and conventional reinforcement. Easy to construct and thus save on time and labor. No spalling due to uniform reinforcement. Reduced damages in handling and de-molding operations due to high impact resistance.
PRECAST ELEMENTS
Improve longevity and performance by using FibrexTM glued steel fi bres.
Applications ____________________________________
Runways, Taxiways, aprons, standing areas, hangar fl oor Roads and Crossovers – For roads and freeways (special design procedure is recommended), general usage in roundabouts Pavements – Footpath and bicycle ways Border roads
Method ________________________________________
Increase crack resistance. Increase impact resistance. Reduced spalling. Better fatigue resistance. Eliminate re-bars. Better abrasion resistance compared to normal concrete.
Benefi ts ________________________________________
Longer life with little maintenance. Easy to construct, save on time and labor costs. Capacity to bear high traffi c and axle loads. No distress cracking or rutting. Even surface and good fi nish. Well suited for hilly areas, high rainfall and village roads areas, which are diffi cult to maintain.
ROADS, HIGHWAYS & AIRPORTS
Eliminate mesh and rebars and save up to 10% on concrete mix. Improved punching strength, eliminate voids and shadowing, better aesthetics.
Applications ____________________________________
Mines Tunnels Canal lining Slope stabilization on hilly terrains Old buildings and structural repairs.
Method ________________________________________
Provides fl exural strength, toughness and durability over time and temperature gradients.
Provides resistance against crack initiation and propagation.
Fibres can be integrated in to ground support system like rock bolts, cable bolts, steel sets etc.
Provides durability and corrosion resistance. Can be applied on uneven surfaces, ceilings and diffi cult to adhere surfaces.
Can be applied with robotic machinery on unsafe areas and diffi cult to reach heights.
Benefi ts ________________________________________
Provides instant reinforcement. Savings on material and labor as it can cover uneven surfaces and follow surface contours.
Thinner coats lead to material savings and aesthetic looks.
No wire nets and mesh, hence save on material and labor. Better aesthetics.
Punching strength is increased. Lesser rebound. Thicker coats can be applied as fi bres assist in build up.
Eliminates use of mesh and problems associated with it (irregular positioning, creation of voids, shadowing, stone rebounds from mesh, concrete overuse etc.)
SHOTCRETE
Used in high performance concrete to provide durability, extreme shock resistance and everlasting performance.
Applications ____________________________________
Bridge decks Safety vaults / strong rooms Military applications like anti missile hangars and underground shelters Explosion proof areas Seismic resistant structures Nuclear containment shielding Off shore building projects
Method ________________________________________
Impact resistance is increased manifold. Enhanced resistance to cyclic load and shocks. Increase bearing strength High resistance to wear and tear Improved resistance to corrosion and seepage.
Benefi ts ________________________________________
High performance and durability Performance under extreme and hazardous environment
Seismic resistance
STRUCTURES OF STRATEGIC IMPORTANCE
ONWARD CHEMICALS
There is a steady growth in the Indian
infrastructure sector, in terms of investment
and automation. However, there is a pressing
need for enhancing the construction quality,
speedier construction and introduction of
innovative methods, to cater the needs of ever
growing population.
WHO WE ARE
Founded in 1995, Onward Chemicals is a fairly
young company with a strong presence in the
Indian Road and Infrastructure industry.
We began operations as a distributor of
Specialty Raw materials for the surface coating
industry serving customers across India.
We diversifi ed from serving the conventional
paints industry and the coatings segment
and realigned our business to emerge as the
preferred suppliers of high quality products for
the road and infrastructure sector.
We have introduced FIBREXTM Glued
Steel Fibres to serve the growing needs of
construction sector. Glued Steel Fibres are
known the world over for its versatility in
application, ease of construction, enhancing
strength and durability and reducing costs.
Head quartered in Mumbai, we have our
presence throughout India, with branch offi ces
at Delhi and Chennai.
the right source makes all the differenceTM
FIBREXTM – GRADES and PHYSICAL PROPERTIES
GRADE DIAMETER LENGTH L/D RATE TENSILE MAIN APPLICATION RECOMMENDED (mm) (mm) STRENGTH (Mpa) DOSAGE (Kg/m3)
FX 55/30 0.55 30 55 1100 Tunnel shotcreting, 25 canal lining, dams
FX 60/30 0.50 30 60 1100 Tunnel shotcreting, 25 canal lining, dams
FX 80/60 0.75 60 80 1050 Molded concrete, Slabs and fl ooring, 20 pavement, bridge decks, runways
FX 67/60 0.90 60 67 1050 Molded concrete,Slabs and fl ooring, 20 pavement, bridge decks, runways
We can supply other sizes tailor made to your specifi cations
For further details please contact:
ONWARD CHEMICALS PVT. LTD. 10-11, Creative Estate, N. M. Joshi Marg,Lower Parel (East), Mumbai – 400 011, IndiaTel : +91-22-4054 6474 • Fax : +91-22-6666 1400Email : [email protected]
Chennai, India2,3,4, A.S. Complex, Thirutani RoadPadur Village, Thiruvellore – 631 203, Tamil NaduTel : +91-44-2765 0399 • Fax : +91-44-2765 0400Email : [email protected]
Faridabad, India18A/1, Ground Floor, DLF Industrial Area, Phase I, Faridabad – 121 003, HaryanaTel : +91-129-411 3366 , 411 3377Email : [email protected]
www.onwardchem.com
the right source makes all the differenceTM