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TerraTex® High Modulus

TerraTex® High Modulus (HM) geotextiles provide the best reinforcement strength, soil interaction, and durability for trafficked areas.

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TerraTex® geotextiles are made up of high tenacity polypropylene yarns. These yarns are woven to form a stable and durable network such that the yarns retain their relative position. They are non-biodegradable and resistant to most soil chemicals, acids, and alkali with a pH range of 3 to 12.

TerraTex® High Modulus Specifications
PropertyTest MethodEnglishUnit (Metric Unit)TerraTex® HPG-HM28TerraTex® HPG-HM38TerraTex® HPG-HM58
Mr Improvement Factor1AASHTO T-307 ()1.32 (1.32)1.36 (1.36)1.41 (1.41)
Initial Tensile Stiffness (0.5% Strain XMD)2ASTM D-4595lbs/ft (kN/m)85,000 (1,240)92,000 (1,342)96,000 (1,401)
Wide Width Tensile (2% Strain XMD)22ASTM D-4595lbs/ft (kN/m)750 (10.9)1,040 (15.2)1,820 (26.6)
Wide Width Tensile (2% Strain MD)2ASTM D-4595lbs/ft (kN/m)700 (10.2)620 (9.05)500 (7.3)
Wide Width Tensile (5% Strain XMD)2ASTM D-4595lbs/ft (kN/m)1,800 (26.2)2,300 (33.57)4,380 (63.9)
Wide Width Tensile (5% Strain MD)2ASTM D-4595lbs/ft (kN/m)1,700 (24.8)1,850 (27.0)1,480 (21.6)
Cyclic Tensile Modulus @ 2% Permanent Strain: JcyclicMDASTM D-7556lbs/ft (kN/m)54,500 (795)68,500 (1,000)75,000 (1,094)
Cyclic Tensile Modulus @ 2% Permanent Strain: JcyclicXMDASTM D-7556lbs/ft (kN/m)68,500 (1,000)76,500 (1,116)121,000 (1,766)
Interaction Coefficient3ASTM D-6706 ()0.9 (0.9)0.9 (0.9)0.92 (0.9)
Permittivity Under Load6ASTM D-5493sec-1 (sec-1)0.5 (0.5)0.5 (0.5)0.8 (0.8)
Water Flow Rate Under Load6ASTM D-5493gal/min/sf (l/min/sm)35 (1,426)35 (1,426)60 (2,445)
Nominal Pore Size 0956ASTM D-6767microns (microns)490 (490)496 (496)453 (453)
Nominal Pore Size 0856ASTM D-6767microns (microns)450 (450)448 (448)403 (403)
Nominal Pore Size 0606ASTM D-6767microns (microns)360 (360)361 (361)352 (352)
Nominal Pore Size 0506ASTM D-6767microns (microns)320 (320)324 (324)328 (328)
Grab Tensile2ASTM D-4632lbs (kN)480 x 320 (2.1 x 1.4)510 x 350 (2.27 x 1.56)620 x 500 (2.76 x 2.23)
Grab Elongation2ASTM D-4632% (%)12 x 8 (12 x 8)12 x 8 (12 x 8)12 x 8 (12 x 8)
CBR Puncture2ASTM D-6241lbs (kN)1,500 (6.6)1,800 (8.01)2,000 (8.9)
Permittivity2 6ASTM D-4491sec-1 (sec-1)0.9 (0.9)0.9 (0.9)1.0 (1.0)
Water Flow Rate2 6ASTM D-4491gal/min/sf (l/min/sm)75 (3,056)75 (3,056)75 (3,056)
AOS5 6ASTM D-4751US Std. Sieve (mm)40 (0.425)40 (0.425)40 (0.425)
UV ResistanceASTM D-4355% strength retained (% strength retained)90% @ 500 hrs (90% @ 500 hrs)90% @ 500 hrs (90% @ 500 hrs)90% @ 500 hrs (90% @ 500 hrs)
Product Data SheetsDownload TerraTex® HPG-HM28 Apples PDSDownload TerraTex® HPG-HM38 Apples PDSDownload TerraTex® HPG-HM58 Apples PDS
  1. Value determined from Composite Geosynthetic-Base Course Artificial Neural Network Model, TRB/NCHRP Project 01-50, “Quantifying the Influence of Geosynthetics on Pavement Performance” (2017), National Academy of Sciences catalog 24841, http://nap.edu/24841. Subgrade Mr improvement range 2.4<CBR<4.7 (4.6<Mr<6.9), 4-inch HMA (300ksi), 10-inch ABC (20ksi), Base Anisotropic Ratio = 0.35, Factor of Safety 1.30.
  2. Minimum average
  3. Soil-Geosynthetic Interaction Coefficient based on testing conducted by TRI Environmental, Austin, TX
  4. 140psf normal load to simulate roadway compression of geotextile porosity, testing conducted by TRI Environmental, Austin, TX
  5. Maximum average
  6. At the time of manufacturing. Handling, storage, and shipping may change these properties