ASTM C639-01

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Designation:C639–01
Standard Test Method for
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Rheological (Flow) Properties of Elastomeric Sealants
This standard is issued under the fixed designation C 639; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3. Terminology
1.1 This test method describes a laboratory procedure for 3.1 Definitions—Refer to Terminology C 717, Section 4.1,
the determination of rheological (flow) properties of single- for definitions of the following terms used in this standard:
and multicomponent chemically curing sealants for use in chemically curing sealants, compound, elastomeric, flow
building construction. (slump), non-sag sealant (non-slump), sealant, self-leveling
1.2 Other suitable flow characteristics may be agreed upon sealant (flowable).
between the seller and purchaser or specifier. Special nonsag
4. Comparison to Other Standards
properties and lower flow characteristics may be required for
4.1 ISO 7390:1987 Building Construction-Jointing
use in sloping joints where absolute leveling is not desired.
Products-Determination of Resistance to Flow
NOTE 1—The sealants are supplied in various rheological properties
ranging from pourable fluids to stiff nonsagging pastes. Multicomponent
5. Significance and Use
sealants are supplied as a base component with an activator or curing
5.1 The results obtained from this test method are simply a
agent separately packaged. After mixing the multiple parts, the sealant is
ready for application. Single-component sealants are supplied ready for measure of the degree of horizontal or vertical flow of
use upon opening of the package and usually depend on the external
single-component or multi-component sealants when applied
environment for cure.
to a set joint configuration at two pre-determined temperatures.
1.3 This test method describes four types of joint sealants: Only samples conditioned at the same temperature may be
directly compared.
1.3.1 Type I—Single-component flowable or self-leveling,
1.3.2 Type II—Single-component nonsag,
6. Apparatus
1.3.3 Type III—Multicomponent flowable or self-leveling,
6.1 Refrigerator, controlled at 4.4 6 2°C (40 6 3.6°F).
and
6.2 Oven, convention-type, controlled at 50 6 2°C (1226
1.3.4 Type IV—Multicomponent nonsag.
3.6°F).
1.4 The values stated in SI units are to be regarded as the
6.3 Channel, one, stainless steel (Type 304, No. 2-B finish,
standard. The values given in parentheses are for information
No. 16 gage), inside dimensions 19 mm wide, 13 mm deep,
only.
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152 mm long ( ⁄4 by ⁄2 by 6 in.), and closed at both ends (see
1.5 This standard does not purport to address the safety
Fig. 1a).
problems associated with its use. It is the responsibility of the
6.4 Channels, two, stainless steel (Type 304, No. 2-B finish,
user of this standard to establish appropriate safety and health
No. 16 gage), inside dimensions 19 mm wide, 13 mm deep,
practices and determine the applicability of regulatory limita-
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152 mm long ( ⁄4 by ⁄2 by 6 in.) with both ends open and the
tions prior to use.
back surface extended 51 mm (2 in.) (see Fig. 1b).
2. Referenced Documents
7. Standard Test Conditions
2.1 ASTM Standards:
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7.1 Unless otherwise specified, standard conditions shall be
C 717 Terminology of Building Seals and Sealants
23 6 2°C (73.4 6 3.6°F) and 50 6 5 % relative humidity.
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8. Procedures
ThistestmethodisunderthejurisdictionofASTMCommitteeC24onBuilding
Seals and Sealants and is the direct responsibility of Subcommittee C24.20 on
8.1 Test for Type I Sealants:
General Test Methods.
Current edition approved June 10, 2001. Published July 2001. Originally
published as C 639 – 69. Last previous edition C 639 – 95.
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Annual Book of ASTM Standards, Vol 04.07.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C639–01
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
compoundintothehorizontalchannelandproceedasdescribed
in 8.1.2. Examine the compound for flow properties.
8.4 Tests for Type IV Sealants:
8.4.1 Vert
...