ASTM D5683-95(2005)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
Designation: D5683 – 95 (Reapproved 2005)
Standard Test Method for
Flexibility of Roofing and Waterproofing Materials and
Membranes
This standard is issued under the fixed designation D5683; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 5.2 This test method enables a researcher to measure the
relative flexibility of roofing and waterproofing sheet materials
1.1 This test method measures the flexibility of roofing or
and membranes under standard conditions in the laboratory.
waterproofing sheet materials or membranes by bending the
5.3 The data obtained from this test method will not permit
test material over a block containing arcs of specific radii at a
prediction of the service life of a membrane. Membrane
standard temperature.
flexibility is important during application, and changes in
1.2 The values stated in SI units are to be regarded as the
flexibility are believed to be linked to the performance of
standard. The values given in parentheses are for information
roofing and waterproofing membranes, but the actual link
only.
between test data and performance is unknown and is depen-
2. Referenced Documents dent on the materials and exposure.
2.1 ASTM Standards:
6. Apparatus
D1079 Terminology Relating to Roofing and Waterproofing
6.1 Water Bath—A bath with the capacity of at least 10 L
3. Terminology
(2.5 gal) and capable of maintaining a temperature of 4.4 6
0.1°C (40 6 0.2°F).
3.1 For definitions of terms used in this test method, refer to
6.2 Polyethylene Bags—A sealable plastic bag for condi-
Terminology D1079.
tioning each group of test specimens. Commercial 1-gal
4. Summary of Test Method
sealable polyethylene scrap or food storage bags can perform
this function.
4.1 Bend the five specimens of roofing or waterproofing
6.3 Test Block—The test block (see Fig. 1) may be made
sheet materials or membrane, conditioned at 4.4°C (40°F), (see
from any hard durable material that conforms to the dimen-
Note 1), over a block (see Fig. 1) designed to provide arcs of
1 1
sions shown in Fig. 1. It is designed to provide equal arc
equal length with 6-mm ( ⁄4-in.), 13-mm ( ⁄2-in.), 19-mm
1 1
3 lengths for arcs with 6-mm ( ⁄4-in.), 13-mm ( ⁄2-in.), 19-mm
( ⁄4-in.), and 25-mm (1-in.) radii, and the smallest radius is
( ⁄4-in.), and 25-mm (1-in.) radii.
reported where cracking is not observed in any specimen.
NOTE 1—Other test temperatures may be used in addition to the tests
7. Sampling
required at 4.4°C (40°F), and refrigerated conditioning chambers may be
7.1 This test method requires a total of one 152 by 305-mm
used instead of the water bath specified. Follow procedures outlined in
(6 by 12-in.) sample from the sheet material or membrane.
Section 8, if refrigerated chamber is utilized; however, the plastic bag may
7.2 Cut five 25 by 152-mm (1 by 6-in.) specimens in the
be omitted.
machine direction (the length) and five 1 by 6-in. specimens in
5. Significance and Use
the cross direction (the width) of each sample.
5.1 This test method is designed to aid those interested in
8. Procedure
the engineering properties of roofing and waterproofing sheet
8.1 Exclude as much air as possible and seal each group of
materials and membranes.
five specimens in a plastic bag.
8.2 Condition the specimens in each plastic bag in a water
This test method is under the jurisdiction ofASTM Committee D08 on Roofing
bath at 4.4 6 0.1°C (406 0.2°F) for at least 1 h.
and Waterproofing and is the direct responsibility of Subcommittee D08.20 on
8.3 One at a time, remove the specimens from the condi-
Roofing Membrane Systems.
Current edition approved Dec. 1, 2005. Published December 2005. Originally
tioning medium. Quickly clamp a narrow end of the specimen
´
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