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�gW <br /> I KIlCNVIRONMENTAL, INC. <br /> A Texas Research International Company <br /> 1-3 <br /> r <br /> INTERFACE FRICTION TEST REPORT <br /> *Client: Holdrege& Kull TRI Log#: E2128-56-09 <br /> Project Forward Landfill Test Method: ASTM 0 5321 <br /> Test Date: 6/10-6/12/01 <br /> Tested Interface: GCL vs. Single-Sided Textured Geomembrane vs. Single-Sided Geocomposite <br /> Upper Box: GCL <br /> 20000 <br /> C <br /> 18000 Floating: Single-sided textured geomembrane <br /> � 16000 <br /> (textured side to GC:) <br /> > 14000 <br /> v, <br /> 12000- Lower Box: GSE single-sided goocomposite <br /> t <br /> 10000 (geonet side to geomembrane) <br /> 800D. <br /> A <br /> 6DOo <br /> O <br /> 4000 Interface . Interface soaked and loading applied <br /> 2000 r�--�"� Conditioning: for a minimum of 24 hours prior to shear <br /> 0 <br /> 0 5000 10000 15000 20000 25000 Test Condition: Wet <br /> Normal Stress(psf) <br /> -urge Displacement 4rtesI Suess(Truer pr) Shearing Rate: 0.04 inches/minute <br /> n <br /> Trial Number 1 2 3 4 5 <br /> Bearing Slide Resistance(lbs) 12 17 17 28 48 <br /> Normal Stress(psf) 1409 4304 7331 11568 21423 <br /> Large Displacment Shear Stress(psf) 234 636 1411 1659 3339 <br /> Corrected Shear Stress(psf) 222 619 1394 1631 3291 <br /> Secant Angle(degrees) 9,0 8.2 10.8 8.0 8.7 <br /> RESULTS: Large Displacement Friction Angle and Y-intercept <br /> at 3.5-in. of Displacement <br /> Regression Friction Angle (degrees): 8.8 <br /> Y-intercept or Regression Adhesion (psf}: 43 <br /> Regression Line: Y= 0.151 'X+ 43 <br /> Regression Coefficient(r squared): 0.984 <br /> Notes: 1) The normal stress and shear stress values contain an area correction. Quality Review/Date <br /> 2) Sliding occurred at the geocompoaite-geomembrane interface. <br /> The testing herein Is based upon accepted industry practice as well as the test method listed Test results reported herein do not apply <br /> to samples other than those tested. TR{neither acceplS responsibility for nor makes claim as to the final use and purpose or the material. <br /> TRI obscrvca and maintains client confidentiality. TRI limits reproduction of thk,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 />