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C <br />TABLE 1-B <br />CLIENT: SHAW ENVIRONMENTAL <br />PROJECT: NCSL VERTICAL EXPANSION <br />INTERFACE SHEAR TEST RESULT (ASTM 05321/6243) Reviewed By: <br />PGL Job No. G090851 Date: October 8, 2009 <br />TEST CONFIGURATION 1-B <br />.......... ... _... .. _ ............. ........ .. ..._....... ..__...,....... <br />NORMALLOAD <br />TOP BOX . <br />GSE, Bentoliner NWL35 (unburnished side) 62221 <br />VS. Interface Control No. <br />GSE, 60 mil HDPE, R# 103175121 (as shown) 61780 <br />BOTTOM 80$1: is <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. Geosynthetic 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. The 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 />NOTE: The friction angles and cohesion results given here are based on mathematically determined best fit line. <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. Sliding occurred between the two interfacing surfaces. <br />Figure #1 <br />Normal Stress/ Interface Stress <br />10000 <br />H 9000 <br />�- 8000 _- -. <br />m 7000 - <br />6000 <br />N 5000 <br />y 4000 w <br />10 3000 <br />d 2000 <br />c 1000 <br />0 <br />0 3000 6000 9000 12000 15000 18000 21000 <br />Normal Load ( psf) <br />e 3.0 Displacemenl 4 Peak <br />- - - - L'mear (3.0 Displacement) Linear (Peak) <br />rn <br />a <br />N <br />A <br />L <br />N <br />9000 <br />8000 <br />7000 <br />6000 <br />5000 <br />4000 <br />3000 <br />2000 <br />1000 <br />0 <br />Figure #2 <br />Shear Stress/ Displacement Curve <br />0.0 D.3 0.7 1.1 1.5 1.9 2.3 2.7 3.2 <br />Displacement (in) <br />-vim- 30.000 - --e- 15.000 - ...,•. 1-- 10,000 PM . 5,000 psf <br />Precision Geosynthetic Laboratories <br />GCL Moisture <br />PEAK STRENGTH <br />POST- PEAK STRENGTH AT <br />3_0 INCHES <br />Normal Stresses Applied <br />Content <br />Asperity Heights <br />Shear <br />Secant <br />Stress <br />Angle <br />Shear Stress <br />Secant Angle <br />Before <br />After Before <br />After <br />(psi) <br />(psf) <br />N <br />N (mils) <br />(mils) <br />(psf) <br />(degrees) <br />(psf) <br />(degrees) <br />35 <br />5,000 <br />10.2 <br />74.5 26.4 <br />24.4 <br />3,168 <br />32 <br />1.655 <br />18 <br />69 <br />10,000 <br />-15,000 <br />10.2 <br />71.8 27.2 _- <br />- <br />23.6 <br />- <br />5,068 <br />27 <br />- <br />2,658 <br />15 <br />- <br />104 <br />10.2 <br />68.3 27.5 <br />22.5 <br />7,213 <br />26 <br />3,465 <br />13 -- <br />139 <br />20,000 <br />10.2 <br />65.9 27.7 <br />21.1 <br />8,525 <br />23 <br />4,880 <br />14 <br />Note: <br />COHESION (psf) : <br />1440 <br />544 <br />N/A - Not Applicable <br />COEFFICIENT OF FRICTION: <br />0.36 <br />0.21 <br />FRICTION ANGLE (degrees) : <br />20.0 <br />11.8 <br />NOTE: The friction angles and cohesion results given here are based on mathematically determined best fit line. <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. Sliding occurred between the two interfacing surfaces. <br />Figure #1 <br />Normal Stress/ Interface Stress <br />10000 <br />H 9000 <br />�- 8000 _- -. <br />m 7000 - <br />6000 <br />N 5000 <br />y 4000 w <br />10 3000 <br />d 2000 <br />c 1000 <br />0 <br />0 3000 6000 9000 12000 15000 18000 21000 <br />Normal Load ( psf) <br />e 3.0 Displacemenl 4 Peak <br />- - - - L'mear (3.0 Displacement) Linear (Peak) <br />rn <br />a <br />N <br />A <br />L <br />N <br />9000 <br />8000 <br />7000 <br />6000 <br />5000 <br />4000 <br />3000 <br />2000 <br />1000 <br />0 <br />Figure #2 <br />Shear Stress/ Displacement Curve <br />0.0 D.3 0.7 1.1 1.5 1.9 2.3 2.7 3.2 <br />Displacement (in) <br />-vim- 30.000 - --e- 15.000 - ...,•. 1-- 10,000 PM . 5,000 psf <br />Precision Geosynthetic Laboratories <br />