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3) Hydrate GCL under 125 psf normal stress for 20 hours with distilled <br /> water. <br /> 4) Anchor lower geotextile component of site-specific GCL to lower <br /> shear box. The upper geotextile component of GCL shall not be <br /> anchored to the box. If the GCL is BENTOMAT DN,the test shall be <br /> assembled so that the dark side shall be in contact with the textured <br /> side of the HDPE geomembrane(i.e., same way as will be deployed in <br /> the field). <br /> 5) Spray upper surface of GCL with water. <br /> 6) Attach the site-specific the geocomposite drainage net and HDPE <br /> geomembrane (per Section 02778) to the upper box. The geotextile <br /> side of the geocomposite drainage net shall be anchored to the upper <br /> box and the geonet side of the geocomposite shall be placed against <br /> the smooth side of the HDPE geomembrane. The textured side of the <br /> HDPE geomembrane shall be facing down and shall be placed over <br /> the GCL in the lower box. <br /> 7) Saturate under test normal stress for 16 hours. Use normal stresses of <br /> 1,000; 2,500; 5,000; and 10,000 psf. <br /> 8) Shear at 0.04 in./min per ASTM D6243. <br /> 9) The testing laboratory should report the interface where deformations <br /> are observed, the initial moisture content of the bentonite component <br /> of the GCL, and the asperity of the geomembrane [GM-12]. The <br /> minimum required interface and internal shear strengths of the <br /> composite liner system shall have a minimum friction angle of 12 <br /> degrees and an apparent cohesion of 0 psf and a friction angle of 5 <br /> degrees and an apparent cohesion of 375 psf for normal load ranges <br /> from 0 to 6,500 psf and from 6,500 to 12,000 psf,respectively. <br /> b. A sample of each tested GCL shall be cut and tested for moisture content <br /> [ASTM D 2216] before and after testing. Moisture contents shall be <br /> recorded and submitted with the test results. The testing laboratory shall <br /> submit a 6-inch square sample of the GCL from the roll used in the testing <br /> to the QA/QC CONSULTANT. <br /> C. The asperity of the geomembrane [GM-12] used in testing shall be <br /> recorded and the data submitted with the test results. The <br /> geomembrane used for testing shall be the same one that will be <br /> shipped to the site for construction of the liner. A 6-inch square <br /> sample of the geomembrane used in testing shall be submitted by the <br /> testing laboratory to the QA/QC CONSULTANT. <br /> Forward Landfill WMU FU-04 5 GEOSYNTHETIC CLAY LINER (GCL) <br /> 02777 <br />