831 Page 522831 GEOTEXTILES AND IMPERMEABLE PLASTIC MEMBRANE
831.1REQUIREMENTS
Geotextiles and impermeable plastic membrane will meet the following requirements as applicable for the specified use. The Contractor will provide a Certificate of Compliance verifying that the material meets the following specifications or documentation the material is listed on the approved products list. Note: If the type of fabric to be used is not specified, drainage fabric - Type B will be used. All values listed are Minimum Average Roll Values (MARV) unless otherwise specified. Drainage Fabric Separator Fabric Fabric and Membrane PropertyTest MethodType A Type BWovenNon- WovenReinforcement Fabric
Plastic Membrane AASHTO ClassAASHTO M 2883 Non- woven1 Non- woven3 Woven2 Non- woven1 Woven PERFORMANCE CRITERIA DURING SERVICE LIFE AOS, US Standard SieveASTM D475140-100 40-100 40-100 40-100 40-100 - - - Permittivity, Sec-1ASTM D44910.2 Min 0.3 Min 0.05 Min 0.1 Min 0.005 Min0.10 US Perms ASTM E96 Thickness, MilsASTM D5199- - - - - - - - - - - - - - - 12 STRENGTH REQUIREMENTS Grab Strength*3, Ibs ASTM D4632110 200 180 160 315 100 *1 Grab Elongation*3, % ASTM D463240 Min 50 Min 50 Max 50 Min 35 Max 15 Min *1 Trapezoid Tear Strength, lbsASTM D453340 80 70 55 110 - - - Puncture Strength, lbsASTM D6241220 430 370 310 620 280 UV Strength Retention, %ASTM D4355 *2 50 50 50 50 50 50 Wide Width Strip Tensile Strength*3, lbs/inchASTM D4595 - - - - - - - - - - - - 200 - - - TYPICAL USES *a*b*c*c*d*e *1Test results from ASTM D7004 will be acceptable for impermeable plastic membrane. *2Non-stabilized or low susceptible geotextiles should not be exposed to ultraviolet radiation for more than 5 days. *3Grab strength, grab elongation, and wide width strip tensile strength are measured in machine and cross-machine directions. *aJoints for concrete pipe culverts & RC boxes, edge drains, drainage tubing, etc. Used as a general filtration fabric. *bRiprap, gabions, inslopes retention on MSE backfill, etc. Use-same as *a, except has a higher construction loading. *cSubgrades, embankments, etc. Used to separate granular material from subgrade. *dBridge end backfill and reinforced slopes. Used to create a reinforced fill and/or used as the wall facing material. *eUnder pavements. Used to restrict the flow of fluids to underlying materials . 850 Page 523850 SELECT GRANULAR BACKFILL
850.1REQUIREMENTS
This material will be free from dirt, vegetation, or other foreign substance. The material will meet the following gradation requirements by dry weight: Sieve Size Percent Passing 1½ inch 100 1 inch 95 - 100 1/2 inch 25 - 80 #4 0 - 20 #8 0 - 5 LA Abrasion loss will not exceed 40%. Sampling and Testing: Sampling .......................................................................................................... SD 201 Gradation ......................................................................................................... SD 202 LA Abrasion ..................................................................................................... SD 204