Property

Value

Test Method

Base Material

Material Composition

Polymer – Polyethylene with density of 0.935 – 0.965 g/cm³ (58.4 - 60.2 lb/ft³)

ASTM D 1505

Color

Black - from Carbon Black

Tan, Green, Other Colors with no heavy metal content

N/A

Stabilizer

Carbon black content 1.5% - 2% by weight

Hindered amine light stabilizer (HALS)

2.0% by weight of carrier

ASTM D 1603

Minimum ESCR

5000 hr

ASTM D 1693

Strip Properties

Sheet Thickness

Prior to Texture:  1.27 mm -5% +10% (50 mil –5% +10%) After Texture:  1.52 mm -5% +10% (60 mil –5% +10%)

ASTM D 5199

Surface Treatment

Performance:  The polyethylene strips shall be textured and perforated such that the peak friction angle between the surface of the textured / perforated plastic and a #40 silica sand at 100% relative density shall be no less than 85% of the peak friction angle of the silica sand in isolation when tested by the direct shear method per ASTM D 5321.  The quantity of perforations shall remove 16.8% ±1.0% of the cell wall area.

Material:  The polyethylene strips shall be textured with a multitude of rhomboidal (diamond shape) indentations.  The rhomboidal indentations shall have a surface density of 22 – 31 per cm² (140 – 200 per in²).  In addition, the strips shall be perforated with horizontal rows of 10 mm (0.4 in) diameter holes.  Perforations within each row shall be 19 mm (0.75 in) on-center.  Horizontal rows shall be staggered and separated 12 mm (0.50 in) relative to the hole centers.  The edge of strip to the nearest edge of perforation shall be 8 mm (0.3 in) minimum and the centerline of the weld to the nearest edge of perforation shall be 18 mm (0.7 in) minimum. A slot with a dimension of 10 mm x 35 mm (3/8 in x 1 3/8 in) is standard in the center of the non-perforated areas and at the center of each weld.

Cell & Seam Properties

Cell Details

Depth

Nominal Dimensions ±10%

Density per m² (yd²)

Nominal Area ±1%

Length

Width

GW30V

150 mm (6 in)

287 mm (11.3 in)

320 mm (12.6 in)

21.7 (18.2)

460 cm²  (71.3 in²)

Short-term

Seam Peel Strength

Cell Depth

Minimum Certified Cell Seam Strength

150 mm (6 in)

2130 N (480 lbf)

Long-term Seam Peel Strength 

Long-term seam peel-strength test shall be performed on all resin or pre-manufactured sheet or strips.  A 100 mm (4.0 in) wide seam sample shall support a 72.5 kg (160 lb) load for a period of 168 hours (7 days) minimum in a temperature-controlled environment undergoing a temperature change on a 1-hour cycle from ambient room to 54C (130F).  Ambient room temperature is per ASTM E 41. 

Section Properties 

Section Dimension

Section Width

Section Length Range (Cells Long: 18, 21, 25, 29, 34)

Variable

Minimum

Maximum

GW30V

2.3 m (7.7 ft) to 2.8 m (9.2 ft)

4.7 m (15.4 ft)

10.7 m (35.1 ft)

Certifications & Warranties

Geoweb® Material

Geoweb® sections are manufactured under a quality management system that is ISO-9001:2008 certified.  For additional certification and warranty information, refer to the Presto Geosystems Geoweb® Cellular Confinement Specification.