ASTM C957-93(1998)
(Specification)Standard Specification for High-Solids Content, Cold Liquid-Applied Elastomeric Waterproofing Membrane With Integral Wearing Surface
Standard Specification for High-Solids Content, Cold Liquid-Applied Elastomeric Waterproofing Membrane With Integral Wearing Surface
SCOPE
1.1 This specification describes the required properties and test methods for a cold liquid-applied elastomeric membrane for waterproofing building decks not subject to hydrostatic pressure. The specification applies only to a membrane system that has an integral wearing surface. This specification does not include specific requirements for skid resistance or fire retardance, although both may be important in specific uses.
1.2 The type of membrane system described in this specification is used for pedestrian and vehicular traffic and in high-abrasion applications. The membrane may be single- or multi-component, and may consist of one or more coats (for example base coat, top coat, etc.). The coat(s) may be built to the desired thickness in one or more applications. One coat (base coat) provides the primary waterproofing function and normally comprises the major amount of organic material in the membrane. The function of the top coat(s) is to resist wear and weather. Aggregate may be used as a component of the membrane system, as all or part of a course, to increase wear and skid resistance.
1.3 Test methods in this specification require a minimum 0.5-mm (0.020-in.) base coat dry film thickness. Actual thickness required for a particular application and the use of aggregate in topcoats shall be established by the membrane manufacturer.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.
1.5 The following safety hazards caveat pertains only to the test method portion, Section 5, of this specification: This standard does not purport to address all of the safety problems, if any, 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: C 957 – 93 (Reapproved 1998)
Standard Specification for
High-Solids Content, Cold Liquid-Applied Elastomeric
Waterproofing Membrane With Integral Wearing Surface
This standard is issued under the fixed designation C 957; 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 2. Referenced Documents
1.1 This specification describes the required properties and 2.1 ASTM Standards:
test methods for a cold liquid-applied elastomeric membrane C 501 Test Method for Relative Resistance to Wear of
for waterproofing building decks not subject to hydrostatic Unglazed Ceramic Tile by the Taber Abraser
pressure. The specification applies only to a membrane system C 717 Terminology of Building Seals and Sealants
that has an integral wearing surface. This specification does not C 719 Test Method for Adhesion and Cohesion of Elasto-
include specific requirements for skid resistance or fire retar- meric Joint Sealants Under Cyclic Movement (Hockman
dance, although both may be important in specific uses. Cycle)
1.2 The type of membrane system described in this speci- C 794 Test Method for Adhesion-in-Peel of Elastomeric
fication is used for pedestrian and vehicular traffic and in Joint Sealants
high-abrasion applications. The membrane may be single- or C 836 Specification for High Solids Content, Cold Liquid-
multi-component, and may consist of one or more coats (for Applied Elastomeric Waterproofing Membrane for Use
example base coat, top coat, etc.). The coat(s) may be built to with Separate Wearing Course
the desired thickness in one or more applications. One coat D 412 Test Methods for Vulcanized Rubber and Thermo-
(base coat) provides the primary waterproofing function and plastic Rubbers and Thermoplastic Elastomers—Tension
normally comprises the major amount of organic material in D 471 Test Method for Rubber Property—Effect of Liq-
the membrane. The function of the top coat(s) is to resist wear uids
and weather. Aggregate may be used as a component of the D 609 Practice for Preparation of Cold-Rolled Steel Panels
membrane system, as all or part of a course, to increase wear for Testing Paint, Varnish, Conversion Coatings, and
and skid resistance. Related Coating Products
1.3 Test methods in this specification require a minimum D 822 Practice for Conducting Tests on Paint and Related
0.5-mm (0.020-in.) base coat dry film thickness. Actual thick- Coatings and Materials Using Filtered Open-Flame
ness required for a particular application and the use of Carbon-Arc Exposure Apparatus
aggregate in topcoats shall be established by the membrane D 1133 Test Method for Kauri-Butanol Value of Hydrocar-
manufacturer. bon Solvents
1.4 The values stated in SI units are to be regarded as the D 2370 Test Method for Tensile Properties of Organic
standard. The values given in parentheses are provided for Coatings
information purposes only. G 23 Practice for Operating Light-Exposure Apparatus
1.5 The following safety hazards caveat pertains only to the (Carbon-Arc Type) With and Without Water for Exposure
test method portion, Section 5, of this specification: This of Nonmetallic Materials
standard does not purport to address all of the safety problems, 2.2 U.S. Department of Commerce Standard:
if any, 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 limita-
tions prior to use.
Annual Book of ASTM Standards, Vol 15.02.
1 3
This specification is under the jurisdiction of ASTM Committee C-24 on Annual Book of ASTM Standards, Vol 04.07.
Building Seals and Sealants and is the direct responsibility of Subcommittee C24.80 Annual Book of ASTM Standards, Vol 09.01.
on Building Deck Waterproofing Systems. Annual Book of ASTM Standards, Vol 06.01.
Current edition approved Sept. 15, 1993. Published December 1993. Originally Annual Book of ASTM Standards, Vol 14.02.
published as C 957 – 81. Last previous edition C 957 – 87. Annual Book of ASTM Standards, Vol 06.04.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
C 957
Product Standard PS-1, Construction and Industrial Ply- 5. Test Methods
wood
5.1 Standard Conditions—Standard conditions for all tests
shall be 23 6 2°C (70 to 77°F) and 50 6 5 % relative
3. Terminology
humidity:
3.1 Definitions—The definitions of the following terms used
5.2 Conditioning and Mixing:
in this specification are found in Terminology C 717: cure, dry
5.2.1 Store all membrane materials to be tested in an
film thickness, elastomeric, elongation, seal, substrate, and
unopened container at standard conditions for at least 24 h
waterproofing.
before preparing any test specimens.
3.2 Descriptions of Terms Specific to This Standard:
5.2.2 Follow the manufacturer’s instructions for all mixing
3.2.1 cold-applied—capable of being applied without heat-
and preparation of membrane materials.
ing as contrasted to hot-applied. Cold liquid-applied products
5.3 Substrates—In addition to the substrates specified
are furnished in a liquid state, whereas hot-applied products are
herein, conduct tests on such other substrates as may be
furnished as solids that must be heated to liquify them.
required by the specifier.
3.2.2 deck—the structural substrate supporting the plaza
5.4 Primer—When required by the manufacturer, use a
deck system.
primer, as directed by the manufacturer, on all substrate
3.2.3 wet film thickness—thickness of a liquid coating as it
materials in all test assemblies.
is applied.
5.5 Low-Temperature Flexibility and Crack Bridging—
Perform the test as specified in the Test Method section of
4. Physical Requirements
Specification C 836, and conform to specified requirements.
4.1 Material—Membrane materials shall cure, after appli-
Make the following changes in the test method of Specification
cation by spreading or spraying, to form an elastomeric film
C 836.
system composed of one or more layers and capable of
5.5.1 Use equipment similar to that in Test Method C 719.
maintaining a seal against water despite the existence or
Other equipment, such as an automatic tension-compression
development of small (1.6 mm ( ⁄16 in.) maximum) cracks in
test machine fitted with an environmental chamber, is permis-
the substrate. It must maintain complete integrity under pedes-
sible, provided it can give the required strain rates and
trian or vehicular traffic.
environment.
4.2 Package Stability—The membrane material shall be
5.5.2 Use 25.4 by 25.4 by 50.8 mm (1 by 1 by 2 in.) mortar
capable of meeting the requirements of this specification if
blocks.
aged for 6 months from the date of manufacture in sealed
5.5.3 Cement aluminum angles 75 by 50 by 25 mm (3 by 2
containers at a temperature of 27 6 1°C (80 6 2°F).
by 1 in.), positioned with the 50-mm legs pointed down, to the
4.3 Weight Loss— The base coat shall have an average
bottom of the mortar blocks with an epoxy adhesive for
weight loss not exceeding 40 % when tested as specified in the
insertion into an automatic compression and extension ma-
Test Method section of Specification C 836. A separate top coat
chine.
or primer, or both, if required by manufacturer, shall comply
5.5.4 Test the total membrane system (primers, base coat(s)
with the manufacturer’s specifications.
and top coat(s)) incl
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