ASTM C1375-00(2020)

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: C1375 − 00 (Reapproved 2020)
Standard Guide for
Substrates Used in Testing Building Seals and Sealants
This standard is issued under the fixed designation C1375; 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 5. Comparison to Other Standards
1.1 This guide describes the recommended standard sub- 5.1 The ASTM committee with jurisdiction over this stan-
strates and their recommended surface preparation for use in dard is not aware of any comparable standards published by
standard tests of building seals and sealants. other organizations.
1.2 This standard does not purport to address all of the
6. Glass Substrate
safety concerns, if any, associated with its use. It is the
6.1 The glass used shall be float glass, which conforms to
responsibility of the user of this standard to establish appro-
Specification C1036, Type I, Class 1, q3. This corresponds to
priate safety, health, and environmental practices and deter-
a glass that is formed on a float line, is transparent, clear, and
mine the applicability of regulatory limitations prior to use.
intended for architectural fenestration applications.
1.3 This international standard was developed in accor-
dance with internationally recognized principles on standard- 6.2 Float glass has two surfaces, which are not necessarily
ization established in the Decision on Principles for the
identical in surface chemistry. There is a tin side, which was in
Development of International Standards, Guides and Recom- contact with a batch of molten tin, and an air side, which did
mendations issued by the World Trade Organization Technical
not have this intimate contact. These two surfaces may or may
Barriers to Trade (TBT) Committee. not have the same adhesion properties with a given sealant. It
is best to test both surfaces for control of testing. If only one
2. Referenced Documents
surface is to be tested, however, it is preferred to use the air
2.1 ASTM Standards:
side as this is likely a more consistent surface.
C33 Specification for Concrete Aggregates
6.3 Determination of Air Side Versus Tin Side:
C150 Specification for Portland Cement
6.3.1 Clean the glass as described in 6.4.
C305 Practice for Mechanical Mixing of Hydraulic Cement
6.3.2 Expose the substrate to the radiation from a short
Pastes and Mortars of Plastic Consistency
wavelength UV light source of approximately 254 nm. The tin
C566 Test Method forTotal Evaporable Moisture Content of
sidewillfluoresceanddisplayahazywhitereflectance.Theair
Aggregate by Drying
side will not show this effect under the same UV light.
C717 Terminology of Building Seals and Sealants
(Warning—Protect eyes and skin from exposure to UV light
C1036 Specification for Flat Glass
when using a UV light source.)
3. Terminology
6.4 Surface Preparation—The substrate should be cleaned
3.1 Definitions—The terms used in this guide are in accor- thoroughlywithasolutionof50 %isopropylalcohol(IPA)and
dance with Terminology C717. 50 % deionized or distilled water and wiped with a clean, lint
free, soft cloth or paper towel. Prepared specimens must be
4. Significance and Use
used within the same working day. Check surfaces for clean-
4.1 The guide provides recommendations for substrates and
liness by running distilled or deionized water over the glass
methods of surface preparation to be used in comparative tests
surface held in a vertical position. Cleaned parts must pass
of building seals and sealants.
water-break inspection as indicated by maintenance of a
continuous film of water on the surface for not less than 30 s.
ThisguideisunderthejurisdictionofASTMCommitteeC24onBuildingSeals
Panels failing the water-break inspection should be recleaned
and Sealants and is the direct responsibility of SubcommitteeC24.10
until the surface can maintain the continuous film of water.
onSpecifications, Guides and Practices.
Current edition approved Jan. 1, 2020. Published January 2020. Originally
7. Aluminum Substrates
approved in 1997. Last previous edition approved in 2014 as C1375 – 00(2014).
DOI: 10.1520/C1375-00R20.
7.1 The aluminum shall be one of two materials, depending
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
on the test sample configuration:
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
7.1.1 For tests requiring a sheet, less than 6 mm thick, the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. sheet shall be made of aluminum alloy 5005-H34.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C1375 − 00 (2020)
7.1.2 For tests requiring a thicker plate, 6 mm or greater, the the density of the wet mortar. Combine the sand, cement, and
plate shall be made of aluminum alloy 6063-T5. water according to the following ratio by weight:
1 part Type III Portland Cement
7.2 The aluminum for either a sheet or plate shall have a
2parts+2MC Sand
clear, Class II anodized finish conforming toAA-M12C22A31
0.5 part – 2 MC Water
(refer to Aluminum Association Circular 45). The anodized
where MC is the moisture content of the sand expressed as a decimal as
surface shall be sealed using a hot water process.
determined in 8.3.2.
7.3 Surface Preparation—The substrate should be cleaned
8.4.2 For example, if 1000 g total mortar are required to fill
thoroughlywithasolutionof50 %isopropylalcohol(IPA)and
the mold, and the MC of the sand has been determined to be
50 % dionized or distilled water and wiped with a clean, soft,
0.10, then the total weight of sand added must be increased by
lint-free cloth or paper towel. At the request of the
10 % or 57.1 g and the amount of water actually added must be
manufacturer, cleaning with methyl ethyl ketone or similar
reduced by the same amount. The recipe now becomes:
solvent m
...