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ASTM D7379-08

(Test Method)

Standard Test Methods for Strength of Modified Bitumen Sheet Material Laps Using Cold Process Adhesive

Standard Test Methods for Strength of Modified Bitumen Sheet Material Laps Using Cold Process Adhesive

SIGNIFICANCE AND USE
These tests are useful in sampling and testing combinations of modified bitumen sheet materials used with cold applied adhesives.
SCOPE
1.1 These test methods cover the procedure for sampling and testing the strength of laps formed with adhesive used with polymer-modified bituminous sheet materials.  
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
31-May-2008
ICS
91.100.50 - Binders. Sealing materials
Technical Committee
D08 - Roofing and Waterproofing
Drafting Committee
D08.04 - Felts, Fabrics and Bituminous Sheet Materials
Current Stage
Ref Project

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ASTM D7379-08 - Standard Test Methods for Strength of Modified Bitumen Sheet Material Laps Using Cold Process AdhesiveASTM D7379-08 - Standard Test Methods for Strength of Modified Bitumen Sheet Material Laps Using Cold Process Adhesive
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ASTM D7379-08 - Standard Test Methods for Strength of Modified Bitumen Sheet Material Laps Using Cold Process Adhesive
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D7379 −08
StandardTest Methods for
Strength of Modified Bitumen Sheet Material Laps Using
Cold Process Adhesive
This standard is issued under the fixed designation D7379; 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 D140. Determine the number of rolls to be selected in
accordance with Section 3, Sampling, of Test Methods D146.
1.1 These test methods cover the procedure for sampling
and testing the strength of laps formed with adhesive used with
5. Conditioning
polymer-modified bituminous sheet materials.
5.1 Condition test materials for a minimum of4hat23 6
1.2 The values stated in SI units are to be regarded as
2°C (73.4 6 3.6°F) and 50 6 5 % relative humidity before
standard. The values given in parentheses are mathematical
preparing specimens for testing.
conversions to inch-pound units that are provided for informa-
6. Lap T-Peel Strength
tion only and are not considered standard.
6.1 This test method covers the determination of the T-peel
1.3 This standard does not purport to address all of the
strength of polymer-modified bituminous sheet material and
safety concerns, if any, associated with its use. It is the
cold applied adhesive combinations.
responsibility of the user of this standard to establish appro-
6.1.1 Modified Bitumen Samples for Testing—Samples for
priate safety and health practices and determine the applica-
testing shall consist of two 140 by 152 mm (5.5 by 6 in.) test
bility of regulatory limitations prior to use.
panels of modified bitumen, bonded with the adhesive to be
2. Referenced Documents
tested, and cut into 25 mm (1 in.) specimens as shown in Fig.
1. Cut the modified bitumen sheet materials and mate the sides
2.1 ASTM Standards:
to be bonded facing each other.
D140 Practice for Sampling Bituminous Materials
6.1.2 Sides to be bonded shall be prepared in the same
D146 Test Methods for Sampling and Testing Bitumen-
fashion as a field seam is constructed with the bottom side of
Saturated Felts and Woven Fabrics for Roofing and
a top panel bonded to the top side (selvage) of the bottom panel
Waterproofing
using the adhesive to be tested.
D5147 Test Methods for Sampling and Testing Modified
Bituminous Sheet Material
6.2 Stir the adhesive to be tested until it is uniform. Spread
5.0 6 0.3 g of the adhesive evenly over the selvage portion of
3. Significance and Use
a bottom panel. Place the top panel over the adhesive-coated
3.1 These tests are useful in sampling and testing combina-
area of the bottom panel (as shown in Fig. 1) in the same
tions of modified bitumen sheet materials used with cold
manner, as a field lap would be made.
applied adhesives.
6.3 Roll the freshly prepared panel combination three times
with a back-and-forth motion, taking care not to move the
4. Sampling
panels during the rolling process. No downward pressure shall
4.1 Fromeachshipmentorfractionthereof,selectatrandom
be exerted on the roller by the operator. The roller shall be
a number of modified bitumen rolls and containers of adhesive
placed in direct contact with the 3-in. wide cemented lap
in accordance with the following. Determine the number of
portion. The roller shall be 127 mm (5 in.) 6 5 % wide, 127
adhesive containers to be sampled in accordance with Practice
mm (5 in.) 65 % in diameter, and shall weigh 11.8 kg (26 lb)
65%.
These test methods are under the jurisdiction of ASTM Committee D08 on
6.4 Conditioning—Heat condition completed modified bitu-
Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.04
men panels prior to peel testing in a ventilated, forced air
on Felts and Fabrics.
convection oven at 70 6 3°C (158 6 5°F) for 7 days 62h.
Current edition approved June 1, 2008. Published July 2008. DOI: 10.1520/
D7379-08.
Panels are to be placed in the oven within 24 h of preparation.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.4.1 After conditioning, allow panels to come to constant
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
temperature at 23 6 2°C (73.4 6 3.6°F) and 50 6 5%
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. humidity for 24 6 1 h prior to testing.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D7379−08
FIG. 1T-Peel Bonding Configuration for a Modified Bitumen Lap
D7379−08
6.5 Specimens—Prepare five die cut test specimens from field seam is constructed; that is, the bottom side of a top panel
each panel. Discard the outer 5 mm (0.13 in.) of each panel to is bonded to the selvage portion of a bottom panel with the
avoid any edge effects. Specimens shall be 25.4 6 0.2 mm (1 adhesive to be tested.
6 0.01 in.) by 152 62mm(6 6 0.05 in.) long. Specimens for
7.2 Prepare specimens for test as in 6.2 through 6.3 above
testing shall incorporate
...

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