Laserfiche WebLink
TECHNICAL SPECIFICATIONS <br />TABLE 02776.2 -1 <br />GCL PROPERTIES <br />Material Property <br />Test Method <br />Test Frequency <br />Required Values <br />Bentonite Swell Index <br />ASTM D5890 <br />1 per 50 tons <br />24 mL/2g min. <br />Bentonite Fluid Loss <br />ASTM D5891 <br />1 per 50 tons <br />18 mL max. <br />Bentonite Mass/Area2 <br />ASTM D5993 <br />40,000 ft` <br />0.75 lb/ft2 min <br />GCL Grab Strength <br />ASTM D6768 <br />200,000 ft2 <br />50 lbs /in MARV <br />GCL Peel Strength <br />ASTM D6496 <br />40,000 ft2 <br />3.5 lb /in min <br />GCL Index Flux <br />ASTM D5887 <br />Weekly <br />1 x 10 m'/m2/sec max <br />GCL Hydraulic Conductivity <br />ASTM D5887 <br />Weekly <br />5 x 10 cm/sec max <br />GCL Hydrated Internal <br />Shear Strength <br />ASTM D5321 <br />ASTM D6243 <br />periodic <br />500 psf typical <br />Notes <br />1 Bentonite property tests performed at a bentonite processing facility before shipment to CETCO's GCL production <br />facilities <br />2 Bentonite mass /area reported at 0 percent moisture content <br />3 All tensile strength testing is performed in the machine direction using ASTM D 6768 Upon request, tensile results <br />can be reported per modified ASTM D 4632 using 4 Inch grips <br />4 Index flux and permeability testing with deaired distilled /delonized water at 80 psi (551kPa) cell pressure, 77 psi (531 <br />kPa) headwater pressure and 75 psi (517 kPa) tailwater pressure Reported value is equivalent to 925 gal /acre /day <br />This flux value is equivalent to a permeability of 5x10-9 cm /sec for typical GCL thickness Actual flux values vary <br />with field condition pressures The last 20 weekly values prior the end of the production date of the supplied GCL <br />may be provided <br />5 Peak value measured at 200 psf (10 kPa) normal stress for a specimen hydrated for 48 hours Site- specific materials, <br />GCL products, and test conditions must be used to verify internal and interface strength of the proposed design <br />2.2 PRODUCT QUALITY DOCUMENTATION <br />A. The GCL MANUFACTURER shall provide MANAGER and CERTIFYING ENGINEER with <br />manufacturing QA /QC certifications for each shipment of GCL. The certifications shall be signed by a <br />responsible party employed by the GCL MANUFACTURER and shall include: <br />Certificates of analysis for the bentonite clay used in GCL production demonstrating compliance <br />with the parameters swell index and fluid loss shown in Table 02776.2 -1. <br />MANUFACTURER'S test data for finished GCL product(s) of bentonite mass /area, GCL tensile <br />strength and GCL peel strength (reinforced only) demonstrating compliance with the index <br />parameters shown in Table 02776.2 -1. <br />GCL lot and roll numbers supplied for the project (with corresponding shipping information). <br />B. Prior to shipment, the GCL MANUFACTURER shall label each roll, identifying: <br />Product identification information (manufacturer's name and address, brand product code). <br />Lot number and roll number. <br />Roll length, width and weight. <br />2.3 PACKAGING <br />A. The GCL shall be wound around a rigid core whose diameter is sufficient to facilitate handling. The <br />core is not necessarily intended to support the roll for lifting but should be sufficiently strong to prevent <br />collapse during transit. <br />B. All rolls shall be labeled and bagged in packaging that is resistant to photo degradation by ultraviolet <br />(UV) light. <br />Geosynthetic Clay Liner (GCL) August 28, 2013 <br />02776.2-3 Revision 0 <br />S \Projects \1550 - CC &V Field Spt CQA PSES Bldg \8 0 Project Engineering and Design \8 2 Specifications\PSES Pipe Rack Liner Extension Specifications\02776 2 Geocomposite Clay <br />Liner docx <br />