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I KI/CNVIRONMENTAL, INC. <br /> A Toxas Research International Company <br /> Pill, INTERFACE FRICTION TEST REPORT <br /> *Client: Noldrege& Kull TRI Log#: E2128-56-09 <br /> Project: Forward Landfill Test Method: ASTM D 5321 <br /> Test Dote: 6/10-6112/01 <br /> Tested Interface: GCL vs. Single-Sided Textured Geomembrane vs. Single-Sided Geocomposite <br /> Upper Box: GCL <br /> 14000 Floating: Single-sided textured geomembrane <br /> 12000 <br /> (textured side to GC:) <br /> w 10000 <br /> a000 Lower Box: GSE single-sided geocomposite <br /> (geonet side to geomembrane) <br /> 8000 <br /> E <br /> E 4000 <br /> 2000- _rte Interface Interface soaked and loading applied <br /> Conditioning: for a minimum of 24 hours prior to shear <br /> 0 <br /> 0 5000 10000 15000 2000() Test Condition: Wet <br /> Normal Stress(pcQ <br /> ----Mulmom Shen,$Vewi(Unear Fit) <br /> Shearing Rate: 0.04 inches/minute <br /> W Trial Number 1 2 3 4 5 <br /> Searing Slide Resistance(lbs) 12 17 17 28 48 <br /> Normal Stress(psf) 1276 3005 5480 10547 15196 <br /> Maximum Shear Stress(psf) 236 489 1018 1639 2512 <br /> Corrected.Shear Stress(psf) 224 472 1001 1511 2464 <br /> Secant Angle(degrees) 10.0 8.9 10.4 1 8.2 1 9.2 <br /> RESULTS: Maximum Friction Angle and Y-intercept <br /> Regression Friction Angle (degrees): 8.8 <br /> Y-Intercept or Regression Adhesion(psf): 32 <br /> Regression Line: Y= 0.155 'X+ 32 <br /> Regression Coefficient(r squared): 0.986 <br /> Quality Review/Date <br /> Notes: 1) The normal stress and shear stress values contain on area correction. <br /> 2) Sliding occurred at the geocomposita•goomombrane Interface. <br /> The teseng herein is based upon accepted Indus"practice as well as the test method listed. Test results reported herein do not apply <br /> to samples other than those tested- TRI neither accepts responsibility for nor makes claim as to the Mal use and purpose of the material <br /> TRI observes and maintains client confidenb9lity. TR1 limits reproduction of this report,except in full,without prior approval of TRI, <br /> 9063 Bee Caves Road Austin,TX 78733-6201 (512)263-2101 (512)263-2558 1-800-880-TEST <br />