Geomembrane textured from HDPE (HDPE) and LDPE (LDPE)

Products: Geomembrane textured from HDPE (HDPE) and LDPE (LDPE) buy wholesale price from Prizvoditel Russia

Geomembrane roll plastic extruded brand "Plastek - GEO" is produced by extrusion on the basis of high density low pressure polyethylene (HDPE) or linear low density polyethylene (LLDPE). This material is intended for waterproofing works of varying degrees of complexity, corrosion protection and waterproofing of concrete structures, creation of impervious screens. Depending on the design application, the insulating material can be produced with a smooth surface, embossed on one or both sides, as well as with geotextiles rolled onto it, made of polymer polypropylene or polyester fibers.

To protect against the effects of ultraviolet radiation, carbon black is used in the manufacture of the material. Its content should be 1.5 - 2.0% by weight. Carbon black must be evenly distributed throughout the material.

When ordering a geomembrane of a different color, a colored concentrate with a light resistance of 7 - 8 points is injected into polyethylene, and for protection from UV radiation - a light stabilizer, the percentage of which varies depending on its type.

Geomembrane advantages:

• waterproofness;
• temperature regime of geomembrane operation from - 70 to + 70˚ С;
• chemical resistance pH = 0.5 ÷ 14;
• service life over 80 years;
• the material is non - toxic.

Physical and mechanical properties of textured geomembranes of the "PLASTEC - GEO" brand

The name of indicators	HDPE with thickness, mm					LLDPE with thickness, mm
Nominal thickness, mm	1.0	1.5	2.0	2.5	3.0	1.0	1.5	2.0	2.5	3.0
Projection height, mm	≥0.25					≥0.25
Density, g / cm3	≥0.94					≥0.92
Breaking strength, kN / m (MPa), not less (Amendment 3): at + 20 ° С along across at + 50 ° С along across at - 20 ° С along across	10.5 (10.5) 10.5 (10.5) nine (9) 9 (nine) 10.5 (10.5) 10.5 (10.5)	15.7 (10.5) 15.7 (10.5) 13.5 (9) 13.5 (nine) 10.5 (10.5) 10.50 (10.5)	21 (10.5) 21 (10.5) 18 (nine) 18 (nine) 21 (10.5) 21 (10.5)	26.2 (10.5) 26.2 (10.5) 22.5 (9) 22.5 (nine) 26.2 (10.5) 26.2 (10.5)	31.5 (10.5) 31.5 (10.5) 27 (nine) 27 (nine) 31.5 (10.5) 31.50 (10.5)	eleven (11) 11 (eleven) ten (10) 10 (ten) eleven (eleven) eleven (eleven)	16.5 (eleven) 16.5 (eleven) 15 (10) 15 (ten) 16.5 (eleven) 16.5 (eleven)	22 (11) 22 (eleven) twenty twenty (ten) 22 22 (eleven)	27.5 (eleven) 27.5 (eleven) 25 (10) 25 (ten) 27.5 (eleven) 27.5 (eleven)	33 (11) 33 (eleven) thirty (10) 30 (ten) 33 (eleven) 33 (eleven)
Elongation at gap, % , not less at + 20 ° С along across at + 50 ° С along - across at - 20 ° С along across	100 100 (Mod. 1) 120 120 90 90					250 250 300 300 200 200

Tensile yield point at + 20 ° С, kN / m (MPa), not less (Amendment 3): along across	15 (15) 15 (15)	22.5 (15) 22.5 (15)	thirty (15) thirty (15)	37.5 (15) 37.5 (15)	45 (15) 45 (15)	- - - -	- - - -	- - - -	- - - -	- - - -
Elongation at yield point, % , not less	12					-
Secant modulus at 2% deformation, N / mm, no more	-	-	-	-	-	420	630	840	1050	1260
Tear resistance, N, not less	125	190	250	315	375	100	150	200	250	300
Loss of strength after 30 cycles of freezing - thawing, % of the initial value, no more	ten					ten
Loss of strength after 90 days of aging at 85 ° С, % of the initial value, no more	45					fifty
Loss of strength after 400 h of UV irradiation, % of the initial value, no more	15					twenty
Flexibility on a rod with a radius 5 mm, at a temperature of minus 60 ° C	There should be no cracks on the surface of the sample and other visible defects					There should be no cracks on the surface of the sample and other visible defects
Water resistance for 3 hours at a hydraulic pressure of 0.3 (3.0) MPa (kgf / cm2)	Lack of water					Lack of water
Water absorption by weight within 30 days, % , no more	0.002					0.002
Water vapor permeability, mg / m hour	Lack of vapor permeability					Lack of vapor permeability
Chemical resistance in solutions after aging for 1000 hours, % , no more - at pH 0.5: by weight change by changing linear dimensions - at pH 13: by weight change by changing linear dimensions	0.05 0.5 0.05 1.5					0.05 0.5 0.05 1.5
Flammability: highly flammable moderately flammable	Duration of self - burning more than 300 s Duration of self - burning no more than 30 s					Duration of self - burning more than 300 s Duration of self - burning no more than 30 s

Laying technology

1 area of use

1.1 These technical recommendations are recommended to be used in the development of design and estimate documentation, projects for the production of work and in the production of construction and installation work.

1.2 These technical recommendations establish the procedure for installing anti - seepage structures using Plastek - GEO geomembrane.

2. Normative references

This device technology uses references to the following regulatory documents:

SNiP 12 - 01 - 2004 Organization of construction.

STO 33460521.013 - 2016 Geomembrane roll plastic extruded brand "Plastek - GEO"

3. Definitions

In this device technology, the following terms are used with the corresponding definitions in accordance with GOST 25100 - 95 and GOST R 55028 - 2012:

Drainage - collection and transfer of sediments, groundwater and other liquids in the plane of the material.

Geosynthetic material is a material made of synthetic or natural polymers, inorganic substances, in contact with soil or other media, used in road construction.

Extruded plastic geomembrane is a synthetic polymer geomembrane obtained by extrusion.

Waterproofing - preventing or restricting the movement of fluids.

Compaction Ratio - The ratio of the lowest required density to the maximum density of a given soil.

Drainage geocomposite of Plastek - GEO brand is a material consisting of a volumetric geonet, fastened on both sides by a filtering non - woven geotextile.

4. General information

Waterproofing landfills for collection and storage of waste is the main requirement for their arrangement. This task is performed by the lower anti - seepage screen. An anti - seepage screen is installed on a pre - prepared base of the landfill and embankment dams. The anti - filtration element is made of a polymer roll material - geomembrane. The underlying layer is made of medium or fine sand.

For the construction of an anti - seepage screen, the Customer engages:

• Earthworks Contractor (EMP);
• Waterproofing Contractor (PGI).

External quality control of work and consulting support to the Customer is performed by the Quality Control Contractor (QC).

5. Initial requirements for materials

5.1 The initial requirements for the material of the anti - seepage element are determined by the Working Drafts of the landfills. The material intended for use must fully meet the requirements set out below:

5.2 It is customary for the project to use a geomembrane anti - seepage element. The geomembrane must meet the requirements of GOST 30547 - 97.

5.3 Geomembrane material according to the project:

•  high pressure polyethylene.

5.4 Geomembrane material should be chemically resistant at pH 1 - 13.

5.5 The material of the geomembrane must ensure reliable operation of the structure at temperatures from + 60 ° C to - 60 ° C.

5.6 The geomembrane material should include stabilizers and antioxidants to increase durability and resistance to UV radiation, aging and biodegradation.

5.7 On the surface of the web there should be no bubbles, cracks, through holes, pores and foreign inclusions.

5.8 The density of the geomembrane material is from 910 to 975 kg / m3.

5.9 Sheet thickness - 1.5 ± 0.15 mm.

5.10 Main strength characteristics:

• Tensile strength (according to GOST 11262 - 80) - not less than 20 MPa;
• Flexural modulus (according to GOST 14359 - 69) - not less than 500 MPa;
• Elongation at break (according to GOST 11262 - 80) - not less than 400% .

5.11 The geomembrane should be supplied in rolls with a width of 5.0 m to 7.0 m. Rolls of a larger width can be considered if the PLT ensures that there is no disturbance to the sub - layer when laying using machinery.

5.12 The roll should consist of one tightly wound web. The canvas should not stick together.

6. Material information provided by the waterproofing contractor

6.1 PGI transfers to the Customer comprehensive information about the material, confirming its compliance with the original requirements (clause 5.):

• Certificate of conformity of the material to the RF Gosstandart system. Additionally, other certification documents and test reports may be attached;
• A brief description of the manufacturing method and information about the additives used;
• Information about the manufacturer's warranty obligations;
• Samples of materials to be supplied.

7. Quality control of material during manufacture

7.1 PLT must confirm compliance with quality control procedures in the manufacture of geomembranes. Each batch of supplied material is accompanied by: a quality document. The procedure and frequency of tests must comply with Russian or generally accepted international standards.

7.2 The quality document indicates:

•  manufacturer's name or trademark;
• product designation;
• batch number and date of manufacture;
• the number of rolls in the batch;

7.3 To control the quality of materials supplied to the work site, independent specialized organizations may be involved at the expense of the Customer. The rated values of the controlled parameters are set in section 2.2 of the Specifications. The involved specialized organization must have a Russian accreditation certificate.

7.4 A PIP representative must be present when drawing up the Material Sampling Act.

8. Production of works

8.1 PLI must develop and submit for approval to the Customer a Work Production Plan (PPR). PPR is developed based on the requirements of these technical recommendations. The initial data for the development of PPR is the documentation and drawings of Working projects. The customer provides the PGI with all the necessary documentation and drawings.

8.2 PPR is developed in accordance with SN 202 - 81, SN 551 - 82.

 

In addition to the issues considered in SN 202 - 81, the PPR should include:

• information about the materials used;
• methods of delivery, unloading and storage of materials at the facility;
• scheme of laying geomembrane panels;
• method of unfolding and stacking panels;
• methods and equipment for welding geomembranes;
• technological chart for welding panels;
• the technology of conjugation of the anti - seepage element on the crest of the embankment dam;
• the technology of interfacing the anti - seepage element with the outlets of the sewer system;
• work quality control plan.

8.3 The provisions of the PPR must meet the requirements of this Specification.

8.4 Laying, installation and welding of the geomembrane should be preceded by:

 

• reparation of the foundation;
•  the device of the underlying layer.

The characteristics of these elements and the control parameters are determined by the working projects for the construction of landfills and are given in section 10 of this TR.

8.5 Before starting the work, the PLT quality control specialist must make sure that the base and sub - base match the requirements of the detailed designs. An Acceptance Certificate is drawn up on the finished surface.

 

9. Construction of the base, sub - base

9.1 For work related to the preparation of the base, arrangement of the underlying and protective layers, an earthworks contractor (EW) is involved. PPR should provide:

• supply of all necessary materials for earthworks;
• quality control of these materials;
• delivery of materials and equipment to the work site;
• storage and safety of material from the moment of their delivery to use;
• work on the arrangement of the base (including anchor ditches and junctions), sub - base and layer.
• quality control of work and materials.

PZR is obliged to submit for approval to the Customer a Work Plan with a detailed description of the specified procedures.

9.2 Initial requirements for the base, arrangement of the underlying layer

defined by the Working draft of the landfill and are given below.

10. Base of landfill and embankment dam

10.1 The construction of the base of the landfill and embankment dams should be carried out in accordance with the requirements of the chapter of SNiP for the production and acceptance of work on the construction of earthworks.

At this stage of construction, the following indicators are monitored:

• compliance of the profile marks with the design ones with an accuracy of 5 cm;
• the degree of soil compaction (at least 2 measurements on an area of 100 m2). The coefficient of soil compaction of embankment dams and the base of the landfill must be at least 0.95;
• all objects protruding above the base surface with a height of 5.0 mm or more are removed or cut off.

10.2 At the stage of quality control of the foundation and embankment dams, the Act of acceptance of planning works is drawn up.

11. Underlayment

11.1 The underlying layer is made of imported sandy soil. The organization of the sand supply is provided by the PZR.

11.2 The total curve of the granulometric composition of the used sand should be within 0.25 - 0.5 mm, which corresponds to fine and medium size sands according to GOST 25100 - 95. The content of the fraction less than 0.1 mm in size should not exceed 10% .

11.3 The sand should not contain sharp - angled inclusions (rough stones and other objects) that can damage the geomembrane. The presence of rounded stones with a diameter of up to 5.0 cm is allowed in the sand.

11.4 The earthwork quality control plan should include measures for sampling the supplied sand.

11.5 Sand leveling is done by a bulldozer, by shear method. Then a layer of sand in a wet state is compacted with a roller. The compaction coefficient of the sandy underlying layer is not less than 0.95. The thickness of the subbase in the compacted state according to the project is 0.1 m.

11.6 At the end of the preparation of the underlying layer, the quality control of the work performed is carried out, which includes:

• control of elevations of the surface of the underlying layer. The marks must correspond to the design ones with an accuracy of ± 5 cm;
• Thorough inspection of the surface: no cracks exceeding 5 cm in width or depth, swelling or swelling of the soil and other defects are allowed;
• control measurements of the thickness of the soil layer, based on at least two measurements on an area of 100 m2;
• checking the degree of compaction of the underlying layer.

11.7 The revealed defects are eliminated by the PZR forces.

11.8 The readiness of the underlying layer for laying the geomembrane panels is confirmed by a written Acceptance Certificate for this stage of work.

11.9 At this stage of work, measures should be taken to prevent the formation of water accumulations on the surface of the underlying layer.

11.10 The passage of machinery and vehicles on the prepared subbase is prohibited

12. Anchor trench

12.1 It is the responsibility of the Customer (Earthworks Contractor) to prepare an anchor trench (ditch) to secure the perimeter anti - seepage screen.

Anchor trench parameters:

• the anchor trench is located at a distance of at least 0.5 m from the edge;
• anchor trench width - 0.50 m;
• anchor trench depth - 0.50 m.

12.2 The dump of soil formed during the formation of the anchor trench must be removed from the trench at a distance of at least 1.5 m before the start of waterproofing work.

12.3 The parameters of the anchor trench can be changed by agreement of the parties.
12.4 After inserting the film into the anchor trench, the geomembrane is sprinkled with local soil to 1/3 of the trench depth, provided the geometrical dimensions of the trench are 0.5x0.5 m.
12.5 Backfilling of the anchor trench is carried out after filling the lagoon by 1.0 - 1.5 meters.
12.6 Backfilling of the anchor trench is required at an ambient temperature below 20 ° C.
12.7 Mechanical fastening of the geomembrane in the trench is not allowed.
12.8 A slight tension of the geomembrane in the corners of the lagoon is allowed due to the stretching properties of the material during heating and cooling. At this point, the work on the arrangement of the lower anti - seepage screen is considered completed.

 

13. Laying the geomembrane

13.1 Laying is carried out by PLI forces in accordance with the panel laying scheme provided for by the PPR. The diagram indicates:

• configuration and dimensions of panels;
• their location at the bottom and slopes of the dam;
• orientation of field seams;
• identification numbers of each of the panels.

13.2 Methods and equipment used for laying panels must not damage the panel and the underlying layer.

13.3 The movement of auto - building equipment and mechanisms on the geomembrane panel and the underlying layer is prohibited.
13.4 It is forbidden for personnel to walk on the panels in shoes that can damage them.

 

13.5 Sheets should be laid freely, without tension, distortions, observing the required overlap. In case of windy conditions, the panels should be loaded. Laying should be carried out in the temperature range defined by the PPR.

13.6 In the process of laying, the surface of the panels is visually inspected for compliance with the requirements of clause 5.7.

13.7 The surface of panels laid and ready for welding must be clean and dry.

14. Welding geomembrane

14.1 All welding works are carried out in the field.

14.2 Welding work should be carried out at a temperature and humidity corresponding to the manufacturer's requirements. Welding work during atmospheric precipitation is not allowed.
14.3 Welding of PPE panels should be performed by a combination of contact and extrusion methods.
14.4 Resistance welding consists in heating the panels in the place of their contact to a temperature exceeding the melting point of the material. Pressure rollers are used to align the heated surfaces. As a result, a weld seam is formed.

14.5 Resistance welding with the formation of a double seam shall be used for all extended sections.
 

 

14.6 In extrusion welding, molten polymer is supplied (under pressure) to the weld zone. The surfaces to be welded pass into a viscous - flowing state, due to pressure, welding takes place.

14.7 Extrusion welding should be used for difficult areas where it is impossible to use double - seam resistance welding - for processing corners, welding interfaces with outlets from drainage 
ditches. For better adhesion, the surfaces to be joined must be abraded before extrusion welding.
14.8 During welding, the required panel overlap must be observed. Butt - to - butt welding is not allowed.
14.9 Information about the seams is recorded in a welding work log, which, upon completion of work, is transferred to the Customer.

 

The following information is recorded in the log:

• seam number;
• welding method;
• welding mode;
• weather;
• seam test results.

The approximate form of the journal is given in table 1.

Table 1. Log of production of welding

 

Panel number	date	Dimensions (edit)	Weight	Method and mode of welding				Quality control		Signature
				Way	Welding temperature	The scope of welding	Air temperature	Strength	Tightness	Welder	Quality management specialist

 15. Quality control of welds

15.1 PGI must ensure quality control of welds to the extent required by the Quality Control Plan. The quality control plan is subject to agreement with the Customer and must provide for the following measures:

• checking the qualifications of welders / checking the technical condition of welding machines;
• operational control of panel welding;
• checking the strength and tightness of welded seams;
• elimination of possible defects.
15.2 Before starting work, the welder must make a test welding of at least two seams 1 m long. Samples cut from these seams are tested for strength.
15.3 A seam is considered to be strong if the pull of one of the connected materials does not follow the seam and the connecting materials do not come apart. Upon receipt of unsatisfactory test results of samples of welded joints, repeated tests of a double number of samples should be carried out.
15.4 Checking the tightness of the seam is carried out by supplying excess air pressure to the test channel (not earlier than 1 hour after welding) in the following sequence:
• a fitting for air supply is connected to one of the ends of the seam;
• air is supplied and air permeability is checked along the entire length of the seam;
• the opposite end of the seam is clamped, for a certain time compressed air is supplied to the channel under the required pressure;
• the air supply is stopped, the seam is kept under pressure for 10 minutes.
15.5 A seam is considered leak - tight if the pressure in the seam drops by no more than 20% .
15.6 During operational control of film welding, the alignment of the edges is controlled: the films being welded, the size of the gap between the die of the extruder and the film, the welding mode and the visual quality of the welded seams. The seams should be smooth, with minimal sagging, scratches and cuts should not exceed 20% of the material thickness.
15.7 All detected defects are subject to elimination. Elimination of defects in a welded seam should consist in removing the defective section of the seam and forming a new weld seam to bypass the defective section.
15.8 After the stage of quality control and elimination of possible defects of the PLT, the Acceptance Certificate of the anti - seepage element is signed.

 

Terms of delivery: FCA, EXW (and others as agreed with the customer)

Form of payment: 100% advance payment.

We produce:

• Smooth geomembrane made of HDPE (HDPE) and LDPE (LDPE)
• Geomembrane textured from HDPE (HDPE) and LDPE (LDPE)
• Geomembrane thermally bonded to textiles made of HDPE (HDPE) and LDPE (LDPE)
• Drainage geocomposite (hydromat)
• Volumetric geogrid
• Geomat
• Road grid.