ASTM D6325-98(2004)

Test Method for Determining Open Assembly Time of Carpet Mastic Adhesives

SIGNIFICANCE AND USE
The ability to have a sufficient open assembly time is critical when bonding a carpet. An adhesive with too short an open assembly time will not allow the installer enough time to position the carpet before the adhesive is dried beyond use. A product with too long an open assembly time will not provide enough dry time for the carpet to bond to the intended substrate without movement of the carpet.
The test method provides a means of measuring the open assembly time for an adhesive. Use of such a test method can aid both the manufacturer to develop and the user to select the appropriate adhesive for the installation of carpet.
Test Method C 679 was used as a model for this test method.
SCOPE
1.1 This test method describes a procedure to measure open assembly time for a troweled carpet adhesive.
1.2 This test method provides an evaluation of the ability of an adhesive to effectively wet out the intended carpet backing.
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 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-Mar-2004
• ICS: 59.080.60 - Textile floor coverings
• ICS: 83.180 - Adhesives
• Technical Committee: D14 - Adhesives
• Drafting Committee: D14.70 - Construction Adhesives

Relations

• Replaces: ASTM D6325-98 - Test Method for Determining Open Assembly Time of Carpet Mastic Adhesives
• Effective Date: 01-Apr-2004
• Replaced By: ASTM D6325-98(2011) - Test Method for Determining Open Assembly Time of Carpet Mastic Adhesives
• Effective Date: 01-Jan-2011
• Referred By: ASTM D7799-12a(2021) - Standard Specification for Tufted and Woven Broadloom Carpet Adhesives Without Homogenous PVC or Non-PVC Backings
• Effective Date: 01-Apr-2004

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D6325–98(Reapproved2004)
Standard Test Method for
Determining Open Assembly Time of Carpet Mastic
Adhesives
This standard is issued under the fixed designation D6325; 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 enoughdrytimeforthecarpettobondtotheintendedsubstrate
without movement of the carpet.
1.1 This test method describes a procedure to measure open
4.2 The test method provides a means of measuring the
assembly time for a troweled carpet adhesive.
open assembly time for an adhesive. Use of such a test method
1.2 This test method provides an evaluation of the ability of
can aid both the manufacturer to develop and the user to select
an adhesive to effectively wet out the intended carpet backing.
the appropriate adhesive for the installation of carpet.
1.3 The values stated in inch-pound units are to be regarded
4.3 Test Method C679 was used as a model for this test
as the standard. The values given in parentheses are for
method.
information only.
1.4 This standard does not purport to address all of the
5. Apparatus
safety concerns, if any, associated with its use. It is the
1 1
5.1 Applicator Trowel— ⁄8 in. (3.2 mm) wide, ⁄8 in. (3.2
responsibility of the user of this standard to establish appro-
mm) deep, ⁄16 in. (1.6 mm) space V-notch.
priate safety and health practices and determine the applica-
5.2 One-kg Weight, at least 2 in. (51 mm) in diameter.
bility of regulatory limitations prior to use.
5.3 Chronometer.
2. Referenced Documents
6. Materials
2.1 ASTM Standards:
6.1 Adhesive—Any appropriate adhesive used to install
C679 Test Method for Tack-Free Time of Elastomeric
carpet.
Sealants
6.2 Polyethylene—Low density (LDPE) with a 0.006 in.
D618 Practice for Conditioning Plastics for Testing
(0.15 mm) thickness.
D907 Terminology of Adhesives
6.3 Glass, 12 in. by 12 in.
3. Terminology
7. Conditioning
3.1 Definitions:
7.1 Condition the LDPE, glass, and adhesive to be tested 24
3.1.1 Many of the terms in this test method are defined in
h prior to testing at 73.4 6 3.6°F (23 6 2°C) and 50 65%
Terminology D907.
relative humidity according to Practice D618.
4. Significance and Use
8. Sample Preparation
4.1 The ability to have a sufficient open assembly time is
8.1 Cut the LDPE into twenty 2 in. (50.8 mm) by 2 in. (50.8
critical when bonding a carpet. An adhesive with too short an
mm) pieces.
open assembly time will not allow the installer enough time to
position the carpet before the adhesive is dried beyond use. A
9. Procedure
product with too long an open assembly time will not provide
9.1 Hold the trowel at a 45° angle and spread enough
adhesive to cover the entire glass surface. Start the chronom-
This test method is under the jurisdiction of ASTM Committee D14 on
eter.
Adhesives and is the direct re
...