ASTM C639-01(2011)
(Test Method)Standard Test Method for Rheological (Flow) Properties of Elastomeric Sealants
Standard Test Method for Rheological (Flow) Properties of Elastomeric Sealants
SIGNIFICANCE AND USE
The results obtained from this test method are simply a measure of the degree of horizontal or vertical flow of single-component or multi-component sealants when applied to a set joint configuration at two pre-determined temperatures. Only samples conditioned at the same temperature may be directly compared.
SCOPE
1.1 This test method describes a laboratory procedure for the determination of rheological (flow) properties of single- and multicomponent chemically curing sealants for use in building construction.
1.2 Other suitable flow characteristics may be agreed upon between the seller and purchaser or specifier. Special nonsag properties and lower flow characteristics may be required for use in sloping joints where absolute leveling is not desired.
Note 1—The sealants are supplied in various rheological properties ranging from pourable fluids to stiff nonsagging pastes. Multicomponent sealants are supplied as a base component with an activator or curing agent separately packaged. After mixing the multiple parts, the sealant is ready for application. Single-component sealants are supplied ready for use upon opening of the package and usually depend on the external environment for cure.
1.3 This test method describes four types of joint sealants:
1.3.1 Type I—Single-component flowable or self-leveling,
1.3.2 Type II—Single-component nonsag,
1.3.3 Type III—Multicomponent flowable or self-leveling, and
1.3.4 Type IV—Multicomponent nonsag.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 This standard does not purport to address the safety problems 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.
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Designation: C639 − 01(Reapproved 2011)
Standard Test Method for
Rheological (Flow) Properties of Elastomeric Sealants
This standard is issued under the fixed designation C639; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 2. Referenced Documents
1.1 This test method describes a laboratory procedure for 2.1 ASTM Standards:
the determination of rheological (flow) properties of single- C717 Terminology of Building Seals and Sealants
and multicomponent chemically curing sealants for use in
3. Terminology
building construction.
3.1 Definitions—Refer to Terminology C717, Section 4.1,
1.2 Other suitable flow characteristics may be agreed upon
for definitions of the following terms used in this standard:
between the seller and purchaser or specifier. Special nonsag
chemically curing sealants, compound, elastomeric, flow
properties and lower flow characteristics may be required for
(slump), non-sag sealant (non-slump), sealant, self-leveling
use in sloping joints where absolute leveling is not desired.
sealant (flowable).
NOTE 1—The sealants are supplied in various rheological properties
ranging from pourable fluids to stiff nonsagging pastes. Multicomponent
4. Comparison to Other Standards
sealants are supplied as a base component with an activator or curing
4.1 ISO 7390:1987 Building Construction-Jointing
agent separately packaged. After mixing the multiple parts, the sealant is
ready for application. Single-component sealants are supplied ready for
Products-Determination of Resistance to Flow
use upon opening of the package and usually depend on the external
environment for cure.
5. Significance and Use
1.3 This test method describes four types of joint sealants:
5.1 The results obtained from this test method are simply a
1.3.1 Type I—Single-component flowable or self-leveling,
measure of the degree of horizontal or vertical flow of
1.3.2 Type II—Single-component nonsag,
single-component or multi-component sealants when applied
1.3.3 Type III—Multicomponent flowable or self-leveling,
to a set joint configuration at two pre-determined temperatures.
and
Only samples conditioned at the same temperature may be
1.3.4 Type IV—Multicomponent nonsag.
directly compared.
1.4 The values stated in SI units are to be regarded as the
6. Apparatus
standard. The values given in parentheses are for information
6.1 Refrigerator, controlled at 4.4 6 2°C (40 6 3.6°F).
only.
1.5 This standard does not purport to address the safety 6.2 Oven, convention-type, controlled at 50 6 2°C (1226
problems associated with its use. It is the responsibility of the 3.6°F).
user of this standard to establish appropriate safety and health
6.3 Channel, one, stainless steel (Type 304, No. 2-B finish,
practices and determine the applicability of regulatory limita-
No. 16 gage), inside dimensions 19 mm wide, 13 mm deep,
tions prior to use.
3 1
152 mm long ( ⁄4 by ⁄2 by 6 in.), and closed at both ends (see
Fig. 1a).
ThistestmethodisunderthejurisdictionofASTMCommitteeC24onBuilding
Seals and Sealants and is the direct responsibility of Subcommittee C24.20 on
General Test Methods. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved June 1, 2011. Published August 2011. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1969. Last previous edition approved in 2007 as C639 – 01 (2007). Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/C0639-01R11. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C639 − 01 (2011)
(2-in.) extension at the bottom for 4 h.At the end of this period
remove the channels from the chambers and measure, to the
nearest 1.5 mm ( ⁄16 in.), the distance that the bottom edge of
sealant moves downward along the 51-mm extended back
surface. This distance is the sag of the compound.
8.2.2 Horizontal Slump—Repeat the procedure described in
8.2.1 with the following change: after filling the channels,
return them to their respective chambers, placing them in a
horizontal position resting on the 13-mm ( ⁄2-in.) side. At the
end of the exposure period, remove the channels from the
chambers and note any change in the configuration of the
compound in the channels.
8.3 Test for Type III Sealants—The test procedure shall be
the same as that described in 8.1 with the following exception:
After conditioning the base and curing agent separately for 16
to 24 h and the channel for2hinthe refrigerator, remove and
hand mix them for at least 5 min. Return the mixed compound
to the cold box for an additional 30 min. Then pour the
FIG. 1 Channels Used for Determining Rheological Properties;
compoundintothehorizontalchannelandproceedasdescribed
(a) for Self-Leveling or Flow-Type Compound; (b) for Nonsag-
in 8.1.2. Examine the compo
...
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