b.
Specific Gravity, ASTM D 297:
1.20, plus or minus 0.05;
c.
Tensile Strength, ASTM D 412:
7.7 MPa 1200 psi minimum;
d.
Tensile Stress at 300 percent elongation, ASTM D 412:
3.85 MPa
600 psi minimum;
e.
Elongation, ASTM D 412:
300 percent minimum;
f.
Tear Resistance, Die C, ASTM D 624: 26.3 newtons per millimeter
(N/mm) 150 pound force per inch (lbf/inch)minimum;
g.
Shore A Hardness, ASTM D 2240:
Five-second interval before
reading; 60 plus or minus 10;
h.
Ozone Resistance, ASTM D 1149: No cracks, 7 days - 50 pphm -
37.8 degrees C 100 degrees F, 20 percent elongation;
i.
Heating Aging-Accelerated, ASTM D 573: Tensile retention, 60
percent of minimum original elongation retention; 60 percent of
minimum original requirement; 7 days, 115.6 degrees C 240 degrees
F;
j.
Butyl Identification, ASTM D 471, Tricresyl Phosphate Immersion:
Maximum volume swell 10 percent, 70 hrs, 100 degrees C 212 degrees
F;
k.
Low Temperature Flexibility, ASTM D 746:
No failure at -40
degrees C -40 degrees F;
l.
Water Absorption, ASTM D 471:
+1 percent maximum.
7 days,
70
degrees C 158 degrees F;
m.
Exposure to Fungi and Bacteria in Soil, ASTM E 154, Minimum 16
Weeks: Unaffected; and
n.
Water Vapor Transmission, 26.7 Degrees C 80 Degrees FPermeance,
ASTM E 96, Procedure B or BW: 8.58 x 10-7 g/Pa.s.m2 0.15 perms
maximum.
2.2.2
Adhesive, Cement, and Tape for Use with Butyl Rubber
As recommended by the butyl rubber waterproofing membrane manufacturer.
2.3
THERMOPLASTIC MEMBRANE: POLYVINYL CHLORIDE (PVC)
Polyvinyl chloride (PVC) flexible sheets with non-woven fiberglass
reinforcing not less than 1.5 mm 60 mils minimum thickness.
2.3.1
Thermoplastic Membrane Performance Requirements
a.
Overall thickness, ASTM D 751:, 1.50 mm .059 inches min.;
b.
Tensile strength ASTM D 638:, 11.03 MPa, 1600 psi min.;
c.
Elongation at break, ASTM D 638:,
250 percent minimum;
d.
Seam strength, ASTM D 638:, 90 percent minimum of tensile strength;
SECTION 07131
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