2014-02-07_REPORT - M1980244 (8)

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ameO C. Acceptable reinforced GCL product is Bentomat® ST, as indicated on the DRAWINGS, and as manufactured by CETCO, 1350 West Shure Drive, Arlington Heights, Illinois 60004 (847-392- 5800),or an equivalent approved by the CERTIFYING ENGINEER and DESIGN ENGINEER. D. The reinforced GCL and its components shall have the properties shown in Table 02776.2-1. E. The reinforced GCL shall have 10,000 hour test data for large-scale constant-load (creep) shear testing under hydrated conditions. The displacement shall be 0.07 inches or less at a constant shear load of 250 pounds per square foot(psf)and a normal load of 500 psf. TABLE 02776.2-1 GCL PROPERTIES Test Frequency Material Property Test Method (ft1) Required Values Bentonite Swell Index' ASTM D5890 1 per 50 tons 24 mL/2g min. Bentonite Fluid Loss' ASTM D5891 1 per 50 tons 18 mL max. Bentonite Mass/Area2 ASTM D5993 40,000 ft2 0.75 lb/ft2 min GCL Grab Strength 3 ASTM D6768 200,000 ft2 50 lbs/in MARV GCL Peel Strength 3 ASTM D6496 40,000 ft2 3.5 lb/in min GCL Index Flux" ASTM D5887 Weekly 1 x 10-8 m3/M2/sec max GCL Hydraulic Conductivity4 ASTM D5887 Weekly 5 x 10-9 cm/sec max GCL Hydrated Internal ASTM D5321 Shear Stren the ASTM D6243 Periodic 500 psf typical Notes 1 Bentonite property tests performed at a bentonite processing facility before shipment to CETCO's GCL production facilities 2 Bentonite mass/area reported at 0 percent moisture content 3 All tensile strength testing is performed in the machine direction using ASTM D 6768 Upon request,tensile results can be reported per modified ASTM D 4632 using 4 inch grips 4 Index flux and permeability testing with deaued distilled/deion¢ed water at 80 psi(551kPa)cell pressure,77 psi(531 kPa)headwater pressure and 75 psi(517 kPa)tailwater pressure Reported value is equivalent to 925 gal/acre/day This flux value is equivalent to a permeability of 5xI0'cm/sec for typical GCL thickness Actual flux values vary with field condition pressures The last 20 weekly values prior the end of the production date of the supplied GCL may be provided 5 Peak value measured at 200 psf(10 kPa)normal stress for a specimen hydrated for 48 hours Site-specific materials,GCL products, and test conditions must be used to verify internal and interface strength of the proposed design 2.02 PRODUCT QUALITY DOCUMENTATION A. The GCL MANUFACTURER shall provide the OWNER and CERTIFYING ENGINEER with manufacturing QA/QC certifications for each shipment of GCL. The certifications shall be signed by a responsible party employed by the GCL MANUFACTURER and shall include: 1. Certificates of analysis for the bentonite clay used in GCL production demonstrating compliance with the parameters swell index and fluid loss shown in Table 02776.2-1. 2. MANUFACTURER's test data for finished GCL product(s) of bentonite mass/area, GCL tensile strength and GCL peel strength(reinforced only)demonstrating compliance with the index parameters shown in Table 02776.2-1. 3. GCL lot and roll numbers supplied for the project (with corresponding shipping information). Section 02776.2 Page 3 of 7 May 9,2012 Geosynthetic Clay Liner(GCL) Revision 1