Nano-elements Introduction in GFRP construction materials, Concrete.

Nano-elements Introduction
in GFRP construction
Materials, Concrete.
Benefits of usage
www.comarcomnano.com

The deterioration of concrete infrastructure owing to corrosion of steel
reinforcement is one of the major challenges facing the construction
industry

Thousands of structures in around the world (bridges, parking
garages, etc.);
Billions $ market

What is FRP bars?
Recent advances in polymer technology have led to the
development of the latest generation FRP reinforcing bars
(mainly Glass FRP bars)
These corrosion resistant FRP bars shown promise as a way
to further protect bridges and public infrastructure from the
devastating effects of corrosion
Based on features above, FRP bars appear to be promising
alternative to steel reinforcement in concrete structures such
as marine structures, parking structures, bridge decks,
highway under extreme environments, and structures highly
susceptible to corrosion and magnetic fields.
Reinforcing the concrete
with GFRP bars would
extend the life of the
structure to 100 years or
more compared to steel-
reinforced concrete, which
needs major restoration
after 25 years in corrosion
environments

China 30%
Europe 27%
Rest of the world
25%
USA 18%
10,25M ton
The world market composite materials
based on glass fibers

FRP bars are made of:
1. Fiber: Mechanical Strength
Main Functions of the Fibres:
Carry load
Provide strength
Oriented in the direction of the primary loads
Mainly Glass Basalt Carbon

2. Polymer (thermoset resin): Chemical Resistance
• Main Functions of the Resin:
Transfers stresses between fibres
Provides lateral support against buckling
Protects fibres from mechanical and environmental damage
Epoxy

Typical FRP bars
with sand coat; with warped profile with spiral wrap;

What is ComAr GFRP?
Fiber glass based on the system SiO2 –
Al2 O3 - CaO-B2O3
“Tatneft – Alabuga Fiber Glass” is
Russian-German joint venture to
manufacture fiberglass
Thermo set resin is Holland
manufacture
Nano-elements is innovational
development?
ComAR rebar with equal
strength is 9 times
lighter than metallic
reinforcement that
facilitates the execution
of construction works

What gives benefits Nano-elements in GFRP?
high affinity to the functional groups of epoxy resins;
provides the complete saturability of fibers;
chemical bonding at the phase interface of fiber and epoxy;
fiber and resin constitute an integral unit.
GFRP of the known manufacturer GFRP with Nano-elements

What benefits Nano-elements in GFRP?
The ratio of fibers and resin provides based technical characteristics GFRP
Reducing the cost of production of GFRP bar
increase content fibers to 87-89%, with normal content 75-80% by weight;
reduction of the amount of expensive component (resine);
accelerate of the polymerization process;
provides the best physical, strength and chemical properties;
saving energy in the production.

Production and technology of GFRP joining nondie method of jet less broaching
“Needletrusion”
Output is more than 150‐200 m/hour;
Reinforcement comes in the form of rods with length up to 12.0 meters, diameter from 6 to 20 mm
Best technical solutions
Automated control system
Guarantee the steadiness and reproducibility of qualitative indicators of GFRP.

Handling and Placement
From a handling and application point of view, construction and installation
practices required when using FRP reinforcing bars are similar to those used
with conventional steel bars.
In most cases, the lightweight properties of FRP bars actually make the
placement of reinforcement in formwork less time consuming.

Environment pollution
(dusty, carbonic acid)
Environment pollution
(dusty, carbonic acid)
energy consumption
energy consumption
GFRP Rebar
mining
extraction
ore
processing
cast iron
melting
Steel
production
Steel
reinforcement
rolled
Roving
production
GFRP rebar
production

Applications of GFRP in Russia
Bridge, 1975, strengthening wooden beams

Bridge, 1989, prestressed beams

Pavement

Foundations and concrete pavement

Foundations and concrete pavement
Replacement 630 tons of steel reinforcement on GFRP in foundation slab is
120 000 $ of economic effect

Tunneling Soft-Eye

Tunneling Soft-Eye
Once installation of the reinforcement is completed, the entire structure is concreted.
The TBM arrives at the extraction shaft which is then easily broken with the cutting
tools.

Applications of GFRP in Canada
• Water Exposure
• (Sea walls, Wharfs, Quays & Dry Docks and etc)

Chemical
Environment
Chemical resistance of
GFRP rebar
Chemical
Environment
GFRP rebar
%
Concentration
Temp °C %
Concentration
Temp °C
Acetic Acid 50 85 Ammonium Hydroxide 28 38
Acetone 100 25 Ammonium Carbonate ALL 65
Alumium Salts ALL 90 Ammonium Bicarbonate ALL 50
Ammonium Chloride ALL 85 Ammonium Nitrate ALL 85
Resistance of GFRP
to the main chemical reagents

Chemical
Environment
GFRP rebar
Chemical
Environment
GFRP rebar
%
Concentration
Temp °C %
Concentration
Temp °C
Benzene 100 60 Calcium Hypochlorite ALL 85
Benzene Sulfonic Acid ALL 90 Calcium Salts ALL 90
Benzoic Acid ALL 90 Calcium Nitrate ALL 90
Calcium Hydroxide 35 85 Carbonic Acid ALL 85
Resistance of GFRP

Chemical
Environment
GFRP rebar
Chemical
Environment
GFRP rebar
%
Concentration
Temp °C %
Concentration
Temp °C
Carbon Tetrachloride 100 60 Citric Acid ALL 85
Chlorine Dioxide ALL 60 Copper Cyanide Plating ALL 85
Chlorine Water ALL 50 Copper Salts ALL 85
Chromic Acid 10 85 Ethanol 50 30
Resistance of GFRP

Chemical
Environment
GFRP rebar
Chemical
Environment
GFRP rebar
%
Concentration
Temp °C %
Concentration
Temp °C
Ethyl Acetate N/R N/R Heptane 100 50
Ferric Chloride 100 85 Hydrobromic Acid 50 50
Ferric Salts ALL 85 Hydrobromic Acid 37 35
Glycerine 100 90 Hydrocyanic Acid ALL 85
Resistance of GFRP

Chemical
Environment
GFRP rebar
Chemical
Environment
GFRP rebar
%
Concentration
Temp °C %
Concentration
Temp °C
Hydrogen Peroxide 30 50 Lead Chloride ALL 90
Hypochlorous Acid 20 65 Lead Nitrate ALL 90
Lactic Acid ALL 90 Lime Slurry ALL 85
Lead Acetate ALL 90 Magnesium Salts ALL 85
Resistance of GFRP

Chemical
Environment
GFRP rebar
Chemical
Environment
GFRP rebar
%
Concentration
Temp °C %
Concentration
Temp °C
Perchloric Acid 30 30 Silver Nitrate 100 85
Phosphoric Acid 100 90 Sodium Hypochlorite 10 65
Potassium Salts ALL 85 Sodium Salts ALL 40
Phthalic Acid ALL 85 Stannic Chloride ALL 90
Resistance of GFRP

Chemical
Environment
GFRP rebar
Chemical
Environment
GFRP rebar
%
Concentration
Temp °C %
Concentration
Temp °C
Styrene N/R N/R Trisodium Phosphate ALL 65
Sulfuric Acid 50 85 Urea ALL 60
Sulfuric Acid 25 90 Vinegar 100 90
Tartaric Acid ALL 90 Water, Distilled 100 90
Resistance of GFRP

Chemical
Environment
GFRP rebar
Chemical
Environment
GFRP rebar
%
Concentration
Temp °C %
Concentration
Temp °C
Water.Sea 100 90
Zinc Salts 100 85
Resistance of GFRP

Tensile strength of
ComAr is twice higher
that of metallic
reinforcement of the
same rod diameter
ComAR rebar with equal
strength is 9 times
lighter than metallic
reinforcement that
facilitates the execution
of construction works
ComAR rebar is
lightweight structural
composite rebar material.
No any special purpose
machinery is required for
construction and
installation works
ComAR rebar retains its
properties within the
range of - 70°C to
+100°C.
ComAr rebar reduces the
overall cost of
construction and
installation work

ComAR rebar is
dielectric, magnetic and
radio transparent
(change in the strength
properties due to the
influence of
electromagnetic fields is
excluded
ComAR rebar is
environmentally friendly.
No toxic substances are
emitted in the course of
operation.
ComAR composite rebar
and concrete have the
same coefficient of
expansion. This avoids
damage to the concrete
from temperature
extremes
ComAr rebar will not rust
or rot. Practically does
not change its
mechanical properties
under the influence of
acids, salts and alkalis
ComAR rebar provides
for durability of concrete
structures, especially in
chemically aggressive
environments and
extreme temperature
conditions

LIFE-CYCLE COST
Fiberglass rebar (GFRP) is a cost effective way to:
• Eliminate fundamental and expensive repair problems
created by black steel reinforcement.
• Maintain cosmetically attractive structures over time (less
cracking and ugly rust staining) resulting in higher
property resale values.
• Reduce concrete cover and corrosion protection
measures taken to protect black steel rebar.
• Ensure your structures will last up to 4 times longer
eliminating expensive capital expenditures over time.
• Make slabs exposed to cyclic loads last 20 times longer
than steel reinforced slabs.
INITIAL COSTS
MAINTENANCE
REPAIR COSTS
DISPOSAL COSTS

COMARCOM BUILDING MATERIALS TRADING LLC
ADDRESS:
Shop 11, Y-17
International City
Dubai, UAE
PHONE:
+971 52 735 3636
EMAIL:
Comarcom.nano@gmail.com
map

THANK YOU
Mr. Andrey Buchkin
Group participation – Russia
PhD, Deputy head of the laboratory of corrosion and durability of concrete
and reinforced concrete structures
The Scientific, Research, Design and Technological Institute for Concrete
and Reinforced Concrete (NIIZhB) named after A.A. Gvozdev– Russia

THANK YOU FOR
ATTENDING
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www.middleeastconcrete/presentations
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Nano-elements Introduction in GFRP construction materials, Concrete.

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