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PE PLASTIC T-RIB LINERSFOR CONCRETE PROTECTION
Polyethylene (PE) T-Rib Profile Liner from the PlastNova® range of products especially for protection of concrete
pipes, strucures & other surfaces.
ProductCatalogue
The Process of Corrosion
Bacteriogenic acid attack is a problem in sewers
which run partially full (figure 1). Anaerobic bacteria
reduce sulphates in the effluent to sulphides and lead
to the formation of hydrogen sulphide (H S). 2
The hydrogen sulfide escapes into the sewer
atmosphere and is then carried to the crown of the
pipe by convection. Once there, it oxidizes to sulphur or
dissolves in moisture to form sulphuric acid (H SO ).2 4
Both species of sulphur are nutrients for a second set
of anaerobic bacteria. This bacterial action produces
sulphuric acid – known as biogenic sulphuric acid
corrosion (BSAC).
The sulphuric acid attacks the Portland cement mortar
by dissolving the Portlandite (Ca(OH) ) and calcium 2
silicate hydrate phases, leaving a silica gel. Similarly in
effluent treatment plant or other high acidic or alkaline
environments the corrosive media attack the RCC
and substantially reduces its life by weakening the
structures both structurally and chemically.
Popular Methods of Combatting Corrosion and Table Comparing various popularly used
methods for tackling Corrosion in RCC
Corrosion in concrete structures
2 SanGrip PE Liners for Concrete Protection
rowC n f oo f n Ro Ci Cs o Pr ir po eC
Corrosion Combating Method Durability Cost Effectiveness
Long Term
Short Term
Short Term
Short Term High
Medium
Medium
High Average
Below Average
Below Average
Low
Higher Concrete Thickness
Over engineered concrete with or without provision of Ventilation to exhaust gases.
Calcareous Aggregates
Type 5 Seawater cement, Hi Alumina cement (Cement Fondue)
Bacteriocides
Added into concrete, using Octration to prevent bacteria formation on surface
Liquid Applied Coatings
Urethane elastomers, Bitumens & Coal-Tar epoxies.
www.sangir.com
Sangir, an innovative engineering company manufacturing semifinished thermoplastic
products, presents SanGrip, a premium Concrete Protective T Profiled Liner from its PlastNova
division of Sheeting Products.
Plastic Concrete Liners in various shapes and materials are successfully in use worldwide for almost 4 decades now. SanGrip
represents a better design and advanced material attributes & in wider widths to this same well proven basic lining principle.
SanGrip PE concrete Liner forms the barrier to aggressive corrosive media and protects the concrete structure. The best of both
worlds are achieved when the advantages of Plastic in combatting corrosion are coupled with superior mechanical & structural
strength of concrete.
The design of SanGrip offered by Sangir is superior to other competing liner products as it provides a full length deep coverage
within the concrete mass. Pull out tests indicate better performance and versatility of applications. The linear bonding within
the concrete handles linear coefficient of expansion far better than V shaped Profiles.
3SanGrip PE Liners for Concrete Protection
Presenting
ctedet wor itP h e Pp Ei P L inC eC rR
www.sangir.com
Width PE = < 2100 mm
2 mm as requiredby customer
> 9.50 > 63.50
11.00
Features
Polyethylene in general
High Chemical Resistance Material
Light weight & flexible - easily adapted to structures
Proven track record in aggressive applications
High Abrasion Resistance even compared to steel
Easily weldable - easy installation, easy repair
High Thermal Resistance : Can be used between
-30 Deg C to 80 Deg C.
SanGrip Specific Advantages
Smaller pipe diameter may be used because of
reduced ‘n’ value
Beneficial System with High Value to Cost Ratio
Mechanical Anchoring within cast concrete provides
high strength
Excellent Shear Strength & impact resistance
Excellent Abrasion Resistance thus offering smoother
surface for long life
Long Life Expectancy, UV Resistance
Bridges slits or cracks in the Concrete Increases
concrete life by 40-50 years
Smooth surface allows smaller vessel size in piping
applications
Increased self cleansing velocity from reduced
Mannings Coefficient in sewage applications.
Maintenance costs drop close to zero levels.
Reference Standards
ASTM D792: Standard Test Methods for Density and
Specific Gravity (Relative Density) of
Plastics by Displacement.
ASTM D1238: Standard Test Method for Melt Flow Rates
of Thermoplastics by Extrusion Plastometer
ASTM D570: Standard Test Method for Water Absorption
of Plastics
ASTM D696: Standard Test Method for Coefficient of
Linear Thermal Expansion of Plastics
Between −30°C and 30°C with a Vitreous
Silica Dilatometer.
ASTM D543: Standard Practices for Evaluating the
Resistance of P lastics to Chemical
Reagents.
Technical Information& Specifications
SanGrip PE Liners for Concrete Protection4
Property
Tensile Strength
at yield
Tensile Strength
at break
Elongation at
yield
Elongation at
break
Shore durometer
(with respect to
initial test result)
Weight change
SanGrip PE Liner
Initial
15 Mpa min
2200 psi min.
24 Mpa min
12% min.
600% min.
1-sec. 50
10-sec. 40
-
After chemical ageing
Par.2.3
15 Mpa min
2200 psi min.
24 Mpa min
12% min.
600% min.
1-sec. 50
10-sec. 40
-
Sulphuric Acid
Ammonium Hydroxide
Sodium Hydroxide
Nitric Acid
Ferric Chloride
Soap
Detergent
(Linear Alkyl Benzyl
Sulfonate Or LAS)
Bacteriological
Chemical Solution
20
5
5
1
1
0.1
0.1
BOD not less than 700 PPM
Concentration %
Property
Density
Malt Flow Rate
Water absorption
Water soluble matter
Porocity
Other specifications
Allowable standard30.94 g/cm
Condition E0.5 g/10min
Condition P1.6 g/10min
0.085%
Zero
No pin holes
Method
ASTM D 792
ASTM D 1238
ASTM D 570
ASTM D 570
Spark Tester 7kV
www.sangir.com
Accessories
Joint strip: Width: 100 mm, 2.3mm thick
Weld Strip: Width: 25 mm, 3.2 mm thick
PE Welding Rods: OD 2 / 3 / 4 / 5 mm
Custom Sizes Available.
Width
Length
5SanGrip PE Liners for Concrete Protection
Product Range
1.65
Thickness(mm)
Size - Width (in mtrs)
1.1 1.7 2.0 25 40 50
Roll Form Sheet Form
2
2.5
3
4
5
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
* Length is normally 2.5 to 2.6 mtrs, concrete pipe length is the limitation.
Custom
Colours
Extrusion Welding Machine Wedge Welding Machine Welding Rods
www.sangir.com
Range
Width: 0.8 mm upto 7 m
Thickness: 0.5 mm to 3 mm
Standards: GRI & ASTM standards
Materials: HDPE, LDPE, LLDPE
Types: Smooth & Textured
Other related products:
Geomembranes
Plastic Geomembrane Sheets & Films made from PE materials for earth or concrete
protection from seepage.
Applications: Water conveyance & storage eg. solar pond, canal, reservoir lining,
Seepage control within zoned earth, Covers for solid waste, Pollution prevention,
Tannery waste, Swimming pool lining, etc.
Welding Tools
Dual Colour Option available:
Benefits
Any wear & tear in sheet easily recognisable.
Shows the wearing out speed of the pipe, any other exposure or ingrowth in the pipe.
Promotes use of virgin quality materials
Increased life of the concrete structure
Roll forms available
Dual Coloured Sheet
SanGrip PE concrete liner offer a wide variety of applications
optimizing lives of concrete structures. They assist in increasing
working efficiency, promoting easier cleaning and maintenance
and most cases substantially increasing the life of the structure
upto twice as compared with original lives purely with RCC
without any lining. High quality raw materials used by Sangir
ensure you get the best out of Polyethylene’s performance for
your harshest environments.
Primary Applications for SanGrip PE liners:
Manufacture of Sewage concrete pipes
Lining of Tunnels
Lining Structures
- Culverts
- Trenches
- Manholes
Underground Constructions
Lining vessels for Sewage and Waste Water service
Lining vessels for Effluent service
In-situ Casting of Concrete Structures
Other Applications:
Waste water Treatment Plants
- Digester
- Landers
- Air ducts
- Alum
- Fluosilicic Acid
Lining Structural foundations for aggressive salts and
chemicals storage
Tank linings in the electro-plating industry
Cell liners in Copper Refineries
Cell liners in Zinc refining
Linings for clean products storage
Linings for Hydrofluoric Acid Tanks
Linings for , Bleach Storage Tanks,
Impervious chemical floors
HDPE tanking for jetty caissons
SanGrip PE Liners for Concrete Protection6
Applications
www.sangir.com
7SanGrip PE Liners for Concrete Protection
Installation of PE liners onRCC pipes & concrete surfaces
Installation of SanGrip PE Liners in RCC pipes
The SanGrip Concrete PE Liner sheets which can be procured from Sangir both in sheet or in
roll form. The welded sheets/rolls are placed in concrete pipe or structural forms and attached
by mechanical means so that they hold a fixed position when concrete is poured. The profiled
side always faces the concrete, mortar or grout. When the concrete is delivered and consequent
vibration of the same, it is to be ensured that the concrete has flowed around the projecting
T-Ribs fully for best results.
Following steps are taken:
a) Rolled PE Liner Sheet is inserted into pre-casting mould before inserting reinforcements.
b) Reinforcements laid and then concrete is poured in gap and vibration for settling is done.
Welding methods after pipes are installed on field
Welding & Quality Check Guidance
www.sangir.com
For vertical installations, use a wall crawling wedge-welding machine
For straight joints, a wedge welding machine
is popularly used
For all other general welding requirements, a hot air based welding gun is used
For RCC Pipes, an extrusion welding
gun with welding rodsis used
SANGIR PLASTICS P LTD.
3rd Floor, Mandhana Enclave, Near Canara Bank, Bangur Nagar, Goregaon (W), Mumbai, India. Postal Code - 400104.
+91-22-28717800 (30 lines) / 28724023
www.sangir.com
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systems
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