2.3. GEONET DRAINAGE GEOCOMPOSITE
A. Material Description
1. Geonet Drainage Geocomposite shall consist of a geonet to which a
geotextile has been heat-bonded to both sides.
2. The geonet shall be manufactured of high-density polyethylene.
3. The geotextile shall be needle-punched, nonwoven, short synthetic staple
polypropylene or polyester fibers
B. Geonet Drainage Geocomposite Properties
1. The components of the Multi-Linear Drainage Geocomposite specified
shall meet or exceed the values provided in the table below.
MANUFACTURING QUALITY CONTROL TEST REQUIREMENTS
CHARACTERISTIC | STANDARD | UNIT | | MARV
Geonet Properties
Core Net Thickness ASTM D5199 mils 2250
Resin Specific Gravity ASTM D1505 g/cm? 0.94
Resin Melt Index ASTM D1238 g/10 min <1.1
Tensile Strength ASTM D7179 Ib/in.
Carbon Black Content ASTM D4218 % 2 to 3
Geotextile Properties (each component)
Mass Per Unit Area ASTM D5261 g/m? (oz/yd?) 270 (8)
Grab Tensile Strength ASTM D4632 N (Ib) 979 (220)
Trapezoidal Tear Strength ASTM D4533 N (lb) 400 (90)
Puncture CBR ASTM D6241 N (Ib) 2670 (600)
AOS(@) ASTM D4751 mm (US sieve) | <0.18 (80)
Permittivity ASTM D4491 sec! 21.26
Geocomposite Properties
Transmissivity (2) ASTM D4716 m2/sec
Ply Adhesion ASTM D7005 lb/in. 1.0
Notes:
(1) Maximum Average Value.
(2) Measured at a minimum seating time of 100 hours, with a test section including Drainage Sand
above the Drainage Geocomposite and textured 60-mil textured HDPE below, using a gradient
of 0.1 under a compressive stress of 12,000 psf for 100 hours.
2.4 TIES (for Geonet Drainage Geocomposite only)
A. Ties used to secure adjacent sheets of Geonet shall be plastic fasteners or
polymer braid and shall meet the approval of ENGINEER. Metallic ties shall not
be allowed. Ties shall be yellow or white to facilitate inspection.
File No. 3066.09 Drainage Geocomposite 02520 - 3 of 5 December 2017
