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CETCO LINING IWHNOLOGIES <br />INTERFACE DIRECT SHEAR TESTING (ASTM D 5321) <br />Upper Shear Box: Concrete sand <br />Hydrated Bentomat DN GCL (Lot 9200726CV/Roll #2922) with black nonwoven geotextile side down against <br />Agru 60 -mil Microspike HDPE geomembrane with long spike (shiny) side up <br />Lower Shear Box: Concrete sand <br />0 4-- <br />0.0 <br />0.8 1.6 2.4 <br />Displacement (in.) <br />3.2 <br />20000 <br />16000 <br />a <br />= 12000 <br />U <br />a <br />L <br />Kil <br />8000 <br />d <br />s <br />4000 <br />OC <br />0 <br />Shear Strength S a R2 <br />Parameters (2) (deg) (pst) <br />Peak 30 0 1.000 <br />LD 14 0 1 1.000 <br />O Peak <br />0 LD <br />----- Linear (Peak) <br />— Linear (LD) <br />4000 8000 12000 16000 20000 <br />Normal stress (psf) <br />Test Shear <br />No. Box Size <br />(in. x in.) <br />10000 <br />Shear <br />Rate <br />(in./min) <br />GCL Soaking <br />Stress Time <br />(psf) (hour) <br />8000 <br />_1A <br />I 12 x 12 <br />10800 <br />0.04 <br />u <br />6000 <br />56.6 6139 2740 1 <br />Lo <br />�1 <br />L <br />d <br />4000 <br />2000 <br />0 4-- <br />0.0 <br />0.8 1.6 2.4 <br />Displacement (in.) <br />3.2 <br />20000 <br />16000 <br />a <br />= 12000 <br />U <br />a <br />L <br />Kil <br />8000 <br />d <br />s <br />4000 <br />OC <br />0 <br />Shear Strength S a R2 <br />Parameters (2) (deg) (pst) <br />Peak 30 0 1.000 <br />LD 14 0 1 1.000 <br />O Peak <br />0 LD <br />----- Linear (Peak) <br />— Linear (LD) <br />4000 8000 12000 16000 20000 <br />Normal stress (psf) <br />Test Shear <br />No. Box Size <br />(in. x in.) <br />Normal <br />Stress <br />(psf) <br />Shear <br />Rate <br />(in./min) <br />GCL Soaking <br />Stress Time <br />(psf) (hour) <br />Consolidation Steps <br />(psf, hr) <br />1 2 3 4 5 6 7 <br />GCL Shear Stress Failure <br />(v cUr 2p TLp Mode <br />8 (%) (psf) (psf) <br />I 12 x 12 <br />10800 <br />0.04 <br />200 24 <br />500, 2 1000, 2 2000, 2 4000, 2 8000, 2 10800, 48 <br />56.6 6139 2740 1 <br />NOTES: <br />(1) Shear failure at the interface between the long spike side of geomembrane and black geotextile side of GCL. <br />(2) The reported total -stress friction angle was determined by drawing a straight line from origin through the test data point. Caution should be exercised in using the friction angle for applications <br />involving normal stresses other than the test normal stress. The large -displacement (LD) shear strength was calculated using the shear force measured at the end of the test. <br />LUC <br />S9005-01.ds.xls <br />DATE OF REPORT: 5/2/2009 <br />FIGURE NO. 1 <br />PROJECT NO. SGI9018 <br />DOCUMENT NO <br />FILE NO. <br />