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Terram 4000 Geotextile Fabric

Product Code: 150WW4012-pro
In Stock

Terram 4000 geotextile fabric enhances the performance and design life of granular layers by providing the filtration and separation functions. Typical uses for Terram T4000 geotextiles include ground stabilisation (between the sub-base and subgrade) and around drainage materials.

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Terram 4000 geotextile fabric enhances the performance and design life of granular layers by providing the filtration and separation functions. Typical uses for Terram T4000 geotextiles include ground stabilisation (between the sub-base and subgrade) and around drainage materials.

Preventing intermixing of granular materials and soils

Terram geotextiles provide an effective solution to the problem of constructing a stable granular layer over soft foundation soils. When stone is placed directly on a soft subgrade, the imposed load often causes intermixing of two layers. This results in contamination of the stone layer and a resulting loss in bearing strength, surface rutting and deformation at the sub-base/subgrade interface.

Preventing the ingress of fines into drainage media

Whether it's a granular drain or a geosynthetic alternative such as open geocellular units, Terram standard geotextiles are ideal for preventing the ingress of fines.

Terram filters/separators are used extensively in the construction of:

  • Paved and unpaved roads
  • Railways
  • Car parks and hardstandings
  • Cycleways and footpaths
  • SuDS installations
  • Green roofs

Terram 4000 Specification

Product Grade

T4000

Roll Width* (m)

4.5

Roll Length (m)

50

Roll Weight (kg)

80

Test Method

Unit

T1000 GT

T1500 GT

T2000 GT

T3000 GT

T4000 GT

4. MECHANICAL PROPERTIES

Tensile Strength EN ISO 10319

kN/m

8.0 (-0.8)

12.5 (-1.25)

14.5 (-1.45)

18.0 (-1.8)

22.0 (-2.2)

Tensile Elongation

%

60 (±20)

60 (±20)

60 (±20)

60 (±20)

60 (±20)

CBR Puncture Resistance EN ISO 12236

N

1500 (-150)

2250 (-225)

2750 (-275)

3250 (-325)

4300 (-430)

Cone Drop EN ISO 13433

mm

38 (+6)

32 (+6)

26 (+5)

24 (+4)

22 (+4)

5. HYDRAULIC PROPERTIES

Pore Size - Mean AOS EN ISO 12956

µm

75 (±20)

65 (±20)

65 (±20)

60 (±20)

60 (±20)

Permeability—(H50) EN ISO 11058

l/m2s

90 (-27)

65 (-20)

55 (-17)

50 (-15)

30 (-9)


Terram 4000 GT 4.5m x 50m 80kg