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TABLE 1A-1HMRT <br />CLIENT: SHAW ENVIRONMENTAL <br />PROJECT: NCSL VERTICAL EXPANSION <br />INTERFACE SHEAR TEST RESULT (ASTM D5321/6243) Reviewed By <br />PGL Job No. G090851 Date: October 16, 2009 <br />TEST CONFIGURATION 1A-HMRT <br />NORMALLOAD <br />111-1 _j_1-11 11-1-114.44-1-1.1; d-1 4 l 1 <br />:.Top BOX :...:::::..::::::....:: <br />NWL35 (unburnished side) 62221 <br />No. <br />GSE, 60 mil HDPE, R# 103175121 (as shown) 61780 <br />........ .....................:::BOTTAM:BOX: is is ii: is ......: :::: i:-: <br />TEST CONDITIONS: <br />SAMPLE PREPARATION: <br />1. Specimens were cut along machine direction to 14" x 17" for the upper box, and 14"x 19" for the lower box, <br />with an effective test area of 12" x 12". <br />2. GCL's burnished side was secured in the Top box via truss plate attached to 1"thick PVC board leaving <br />unburnished side floating in contact with the geomenbrane. <br />3. Geomembrane specimens were secured in the shear box via flat bar campling mechanisms complete with bolts and nuts (7 -pairs). <br />CONSOLIDATION: <br />1. Each set of specimen was consolidated under Flooded condition for 48 hrs @ normal load before shearing. <br />2. Normal loads were applied using Hydraulics for the highest and intermediate 1 loads, and <br />bladder for the intermediate 2 and lowest loads. <br />SHEAR TEST: <br />1. Shear test was conducted @ 0.040 in/ min. <br />2. Sheared @ minimum 3_0 inch horizontal displacement. <br />3. Test specimens were sheared in Flooded condition <br />4. Test were performed in general accordance with ASTM D6243 / ASTM D5321 <br />using Brainard-Kilman LG -112 Direct Shear machine with effective test area of 12 in X 12 in. <br />TEST RESULTS: <br />OBSERVATIONS: 1. No tilting of the system or any abnormalities observed during and after the test. <br />2. Superficial abrasion on the geosynthetics interfacing sides (typical to all loads). <br />3. @ 20,000 psf Load: Sliding occurred between unburnished side & geomembrane surfaces for approximately <br />3/4 inch; afterwards, internal failure of the GCL took place. <br />@15,000 psf Load: Sliding occurred between the GCL(unburnished side) & geomembrane contact surfaces. <br />(Photos attached). <br />Figure #1 Figure #2 <br />Normal Stress/ Interface Stress Shear Stress/ Displacement Curve <br />9000 9000 <br />Zi 8000 _. } 8000 <br />rn 7000in 7000 <br />y 6000 g 6000 <br />n 5000 N 5000 <br />w 4000 _.. 4000 <br />3000 3000 <br />w 2000 y 2000 <br />1000 (n 1000 <br />0 0 <br />0 5000 10000 15000 20000 25000 0.0 0.2 0.6 1.0 1.4 1.8 2.2 2.6 3.0 3.2 <br />Normal Load ( psf) Displacement (in) <br />♦ 3.0 emeM %- Peak -e- Y0.000 pe �_ 15,000 Psf -..,..°"...-• 10.000 psf .... 5,000 psf <br />----- Linear <br />( (3.0 3.0 Displacement) Linear (Peak) <br />W ­ <br />At -LAP <br />Precision Geosynthetic Laboratories <br />C <br />Normal Stresses Applied <br />GCL Moisture <br />Content <br />Asperity Heights <br />PEAK STRENGTH <br />POST- PEAK STRENGTH AT 3_0 INCHES <br />Shear <br />Stress <br />Secant <br />Angle <br />Shear Stress Secant Angle <br />Before After <br />Before After <br />(psi) <br />(psf) <br />N ( % ) <br />(mils) (mils) <br />(psi) <br />(degrees) <br />(psf) (degrees) <br />104 <br />139 <br />15.000 <br />20,000 <br />13.5 80.0 <br />13.5 73.8 <br />26.2 24.3 <br />25.1 23.6 <br />7,138 <br />8,299 <br />25 <br />23 <br />2,024 8 <br />2,009 6 <br />OBSERVATIONS: 1. No tilting of the system or any abnormalities observed during and after the test. <br />2. Superficial abrasion on the geosynthetics interfacing sides (typical to all loads). <br />3. @ 20,000 psf Load: Sliding occurred between unburnished side & geomembrane surfaces for approximately <br />3/4 inch; afterwards, internal failure of the GCL took place. <br />@15,000 psf Load: Sliding occurred between the GCL(unburnished side) & geomembrane contact surfaces. <br />(Photos attached). <br />Figure #1 Figure #2 <br />Normal Stress/ Interface Stress Shear Stress/ Displacement Curve <br />9000 9000 <br />Zi 8000 _. } 8000 <br />rn 7000in 7000 <br />y 6000 g 6000 <br />n 5000 N 5000 <br />w 4000 _.. 4000 <br />3000 3000 <br />w 2000 y 2000 <br />1000 (n 1000 <br />0 0 <br />0 5000 10000 15000 20000 25000 0.0 0.2 0.6 1.0 1.4 1.8 2.2 2.6 3.0 3.2 <br />Normal Load ( psf) Displacement (in) <br />♦ 3.0 emeM %- Peak -e- Y0.000 pe �_ 15,000 Psf -..,..°"...-• 10.000 psf .... 5,000 psf <br />----- Linear <br />( (3.0 3.0 Displacement) Linear (Peak) <br />W ­ <br />At -LAP <br />Precision Geosynthetic Laboratories <br />C <br />