POLYETHYLENE I HDPE GEOMEMBRANES Dimensional Properties Tensile Properties ASTM D 6693 [3] Strength Elongation Oxidative Induction Time (OIT) (min. avg.) [7] Oven Aging at 85ºC ASTM D 5721 [7], [8] Standard OIT High Pressure OIT UV Resistance GM 11 [9] Layfield Environmental Containment l www.layfieldgroup.com Layfield HDPE 60 HDPE Layfield HDPE 80 Layfield HDPE 60 Textured Layfield HDPE 80 Textured HEATGARD 60 HEATGARD 80 HDPE Conductive HDPE HDPE HDPE HDPE HDPE HDPE 6.86/158.5 m (22.5/ 520 ft) 6.86/122 m (22.5/400 ft) 6.86/171 m (22.5/560 ft) 6.86/134 m (22.5/440 ft) 6.86/158.5 m (22.5/ 520 ft) 6.86/122 m (22.5/400 ft) 6.86/158.5 m (22.5/ 520 ft) 1.5 (60) 2.0 (80) 1.45 (57) 1.90 (76) 1.5 (60) 2.0 (80) 1.5 (60) ≥ 0.94 ≥ 0.94 ≥ 0.94 ≥ 0.94 ≥ 0.94 ≥ 0.94 ≥ 0.94 22 (126) 29 (168) 22 (126) 29 (168) 27 (152) 36 (204) 22 (126) 40 (228) 53 (304) 16 (90) 21 (120) 40 (228) 53 (304) 40 (228) 12% 700% 12% 700% 12% 100% 12% 100% 13% 600% 13% 600% 12% 700% 0.48 (108) 0.64 (144) 0.4 (90) 0.534 (120) 0.534 (120) 0.712 (160) 0.48 (108) 0.187 (42) 0.249 (56) 0.187 (42) 0.249 (56) 0.2 (45) 0.260 (58) 0.187 (42) ≥ 2.0% ≥ 2.0% ≥ 2.0% ≥ 2.0% ≥ 2.0% ≥ 2.0% ≥ 2.0% Note [5] Note [5] Note [5] Note [5] CAT1 CAT1 Note [5] 500 500 500 500 1000 1000 500 100 100 100 100 100 100 100 400 400 400 400 400 400 400 55% 55% 55% 55% 55% 55% 55% 80% 80% 80% 80% 80% 80% 80% 50% 50% 50% 50% 50% 50% 50% all all all all High Temperature Containment High Temperature Containment Leak Detection [1] HDPE = High density polyethylene = Coextruded CX T = Textured S = Smooth [2] Lowest individual of 10 values [3] Machine direction (MD) and cross machine direction (XD) average values should be on the basis of 5 test specimens each direction * Yield elongation calculated with a gage length of 33mm * Break elongation calculated with a gage length of 50mm [4] Other methods such as D 4218 (muffle furnace) or microwave methods are acceptable if an appropriate correlation to D 1603 (tube furnace) can be established. [5] Carbon black dispersion for 10 different views: * minimum 9 of 10 in Categories 1 or 2 * all 10 in Categories 1, 2, or 3 [6] The yield stress used to calculate the applied load for the SP-NCTL test should be the manufacturer's mean value via MQC testing. [7] The manufacturer has the option to select either one of the OIT methods listed to evaluate the antioxidant content in the geomembrane. [8] It also is recommended to evaluate samples at 30 and 60 days to compare with the 90 day response. « Geosynthetics recommends you contact the manufacturers before making any specifying/purchasing decisions » GeosyntheticsMagazine.com 59 [9] The condition of the test should be 20 hr. UV cycle at 75 C followed by 4 hr. condensation at 60 C. [10] UV resistance is based on percent retained value regardless of the original HP-OIT value. [11] CL = Canal liner SIL = Surface impoundment liner SIC = Surface impoundment cover LL = Landfill liner DP = Decorative pond NP = Not provided by manufacturer NA = Not applicable, per manufacturer DL = Dam liner LPL = Leach pad liner LC = Landfill cover TL = Tunnel liner RP = Reserve pit Product Name Base Polymer [1] Roll Width/Length m (ft) Thickness ASTM D5199 (smooth) ASTM D5994 (textured) min. avg. mm (mils) [2] Density ASTM D1505/D792 (min.) (g/cm3 min.) Yield Stress kN/m (lb/in) Break Stress kN/m (lb/in) Yield Elongation % Break Elongation % Puncture Resistance D 4833 (min. avg.) kN (lb) Tear Resistance ASTM D 1004 (min. avg.) kN (lb) Carbon Black Content ASTM D 1603 range (%) [4] Carbon Black Dispersion ASTM D 5596 [5] Stress Crack Resistance ASTM D 5397 Appendix [6] Standard OIT ASTM D 3895 High Pressure OIT ASTM D 5885 ASTM D3895 % retained after 90 days ASTM D5885 % retained after 90 days High Pressure OIT (min. age.) % retained after 1600 hrs [10] Manufacturer's Suggested Applications [11]http://www.layfieldgroup.com http://www.GeosyntheticsMagazine.com