ASTM D2452-15(2019)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D2452 − 15 (Reapproved 2019)
Standard Test Method for
Extrudability of Oil- and Resin-Base Caulking Compounds
This standard is issued under the fixed designation D2452; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Significance and Use
4.1 The rate of extrusion determined by this test may be
1.1 This test method describes the laboratory procedure for
correlated with the rate of gunning of the compound.
determining the rate of extrusion of oil- and resin-base caulk-
ing compounds.
5. Apparatus
1.2 The values stated in metric (SI) units are to be regarded
5.1 Press-Flow Extrusion Rheometer constructed in accor-
as the standard. The values given in parentheses are provided
dance with Fig. 1.
for information only.
5.2 Air Supply and Pressure Gage, accurate to 6.9 kPa (1
1.3 The subcommittee with jurisdiction is not aware of any
psi).
similar ISO standard.
5.3 Clamps and Stand to hold rheometer.
1.4 This standard does not purport to address all of the
5.4 Balance, accurate to 0.01 g.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5.5 Stopwatch.
priate safety, health, and environmental practices and deter-
5.6 Spatula (Steel).
mine the applicability of regulatory limitations prior to use.
5.7 Weight-per-gallon Cup, capacity 83.2 cm .
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
6. Reagent
ization established in the Decision on Principles for the
6.1 Solvent, such as methyl ethyl ketone.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
7. Sampling
Barriers to Trade (TBT) Committee.
7.1 The compound to be tested shall be taken from a
2. Referenced Documents
previously unopened container and thoroughly mixed before
2 using.
2.1 ASTM Standards:
C717Terminology of Building Seals and Sealants
8. Conditioning
D1475Test Method for Density of Liquid Coatings, Inks,
8.1 Afterthoroughlycleaningthepress-flowrheometerwith
and Related Products
solvent, condition the compound and the rheometer in the
laboratory for at least5hat standard conditions.
3. Terminology
3.1 Definitions—Definitions of the following terms are
9. Procedure
found in Terminology C717: caulking compound, compound,
9.1 Remove the orifice holder from the rheometer cylinder
sealant, standard conditions.
and hold the open end up, making sure that the follower plate
remains inside.
9.2 Fill the cylinder with compound, avoiding air pockets.
ThistestmethodisunderthejurisdictionofASTMCommitteeC24onBuilding
Strike off the filled cylinder with a spatula and replace the
Seals and Sealants and is the direct responsibility of Subcommittee C24.20 on
General Test Methods.
bottom orifice cap. Connect the tube to an air supply and fix it
Current edition approved Oct. 1, 2019. Published October 2019. Originally
to a support stand above the balance.
approved in 1966. Last previous edition approved in 2015 as D2452–15. DOI:
10.1520/D2452-15R19.
9.3 Adjust the air pressure to 207 kPa (30 psi) and open the
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
air valve. If the pressure drops, readjust to 207 kPa while
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
extrusion is in progress. Close the air valve and discard this
Standards volume information, refer to the standard’s Document Summary page on
the AST
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