ASTM C910-93a(1997)

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Designation: C 910 – 93a (Reapproved 1997)
Standard Test Method for
Bond and Cohesion of One-Part Elastomeric Solvent
Release-Type Sealants
This standard is issued under the fixed designation C 910; 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.
1. Scope 4.5 Mortar Blocks, six, prepared as described in Methods
D 1191, except that the blocks shall be approximately 25.4 mm
1.1 This test method determines the bond and cohesion of
(1 in.) wide by 76.2 mm (3 in.) long by 25.4 mm (1 in.) thick
one-part, elastomeric, solvent release-type sealants after high-
and surfaced by wet grinding on an iron lap with No. 60 silicon
and low-temperature aging.
carbide or aluminum oxide grain.
1.2 This standard does not purport to address all of the
4.6 Plates, six, of water-white polished float or plate glass
safety concerns, if any, associated with its use. It is the
approximately 25.4 mm (1 in.) wide by 76.2 mm (3 in.) long by
responsibility of the user of this standard to establish appro-
6.35 mm ( ⁄4 in.) thick.
priate safety and health practices and determine the applica-
4.7 Aluminum Alloy Plates, six, 6063-T5 or 6061-T6 clear
bility of regulatory limitations prior to use.
anodized a minimum of 20 min over a scale-free finish,
2. Referenced Documents approximately 25.4 mm (1 in.) wide by 76.2 mm (3 in.) long by
6.35 mm ( ⁄4 in.) thick.
2.1 ASTM Standards:
4.8 Polyethylene Spacer Bars, nine, approximately 12.7 mm
C 717 Terminology of Building Seals and Sealants
1 1
( ⁄2in.) by 12.7 mm ( ⁄2 in.) by 50.8 mm (2 in.), 18 bars 12.7
D 1191 Test Methods for Concrete Joint Sealers
1 1
mm ( ⁄2 in.) by 12.7 mm ( ⁄2 in.) by 25.4 mm (1 in.) and 18 bars
E 145 Specification for Gravity-Convection and Forced-
9 1
14.29 mm ( ⁄16 in.) by 6.35 mm ( ⁄4 in.) by 25.4 mm (1 in.).
Ventilation Ovens
5. Reagents
3. Terminology
5.1 Acetone or Methyl Ethyl Ketone Solvents.
3.1 Definitions—Refer to Terminology C 717 for definitions
6,7
5.2 Detergent Solution.
of the following terms used in this test method: elastomer,
5.3 Distilled Water.
elastomeric, sealant, solvent-release sealant.
6. Sampling
4. Apparatus
6.1 Take all test specimens from a previously unopened
4.1 Extension Machine, as shown in Fig. 1, so designed
container.
that the test specimen can be automatically extended at a
constant rate of 3.18 mm ( ⁄8 in.)/h from a joint width of 12.7
7. Procedure
1 9
mm ( ⁄2 in.) to 14.29 mm ( ⁄16 in.) at −23 6 3°C (−10 6 5°F).
7.1 Clean the glass and aluminum plate first with solvent,
4.2 Oven, forced-draft type, having temperature controlled
with detergent solution, followed by a final rinse with distilled
at 70 6 2°C (158 6 3.6°F). See Specification E 145.
water. Allow plates to air dry. Prepare the six mortar blocks as
4.3 Oven, convection type, having temperature controlled at
described in 4.5.
50 6 1°C (122 6 2°F).
7.2 Precondition the unopened containers of sealant at 23 6
4.4 Freezer Chest or Cold Box, having temperature con-
2°C (73.4 6 3.6°F) and 50 6 5 % relative humidity for a
trolled at −23 6 3°C (−106 5°F).
minimum of 24 h.
7.3 Prepare three test specimens for each substrate to be
This test method is under the jurisdiction of ASTM Committee C24 on Building
tested, as follows: Using the polyethylene spacer bars to
Seals and Sealants and is the direct responsibility of Subcommittee C24.20 on
control the joint dimensions, form a bead of sealant 12.7 mm
General Sealant Standards.
Current edition approved Sept. 15, 1993. Published November 1993. Originally
published as C 910 – 79. Last previous edition C 910 – 93.
2 6
Annual Book of ASTM Standards, Vol 04.07. Neodol 25-35, a registered trademark of Shell Oil Co., One Shell Plaza,
Annual Book of ASTM Standards, Vol 04.03. Houston, TX 77002, has been found suitable.
4 7
Annual Book of ASTM Standards, Vol 14.02. Dawn, a registered trademark of Proctor and Gamble Co., P.O. Box 579,
An automatic compression-extension machine manufactured by Applied Test Cincinnati, OH 54201, or Palmolive Green, a registered trademark of Colgate
Systems, Inc., 348 New Castle Road, Butler, PA 16001, or an equivalent has been Palmolive Co., 300 T. Park Ave., New York, New York, have been found suitable for
found suitable for this purpose. this purpose.
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