ASTM C957-06
(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
ABSTRACT
This specification describes the required properties and test methods for high-solids content, cold liquid-applied elastomeric membrane with integral wearing surface for waterproofing building decks not subject to hydrostatic pressure. This specification does not include specific requirements for skid resistance or fire retardance, although both may be important in specific uses. The properties to which the materials will be tested upon for conformance are as follows: weight loss of base coat; low temperature crack bridging; adhesion-in-peel to cement mortar and plywood substrates after water immersion; chemical resistance after water, ethylene glycol, and mineral spirits exposure; weathering resistance, recovery from elongation, tensile retention, and elongation retention; abrasion resistance; and stability.
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 The committee with jurisdiction over this standard is not aware of any comparable standards published by other organizations.
1.4 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.
1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: C957 – 06
Standard Specification for
High-Solids Content, Cold Liquid-Applied Elastomeric
1
Waterproofing Membrane With Integral Wearing Surface
This standard is issued under the fixed designation C957; 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 of this standard to establish appropriate safety and health
practices and determine the applicability of regulatory limita-
1.1 This specification describes the required properties and
tions prior to use.
test methods for a cold liquid-applied elastomeric membrane
for waterproofing building decks not subject to hydrostatic
2. Referenced Documents
pressure. The specification applies only to a membrane system
2
2.1 ASTM Standards:
thathasanintegralwearingsurface.Thisspecificationdoesnot
C501 Test Method for Relative Resistance to Wear of
include specific requirements for skid resistance or fire retar-
Unglazed Ceramic Tile by the Taber Abraser
dance, although both may be important in specific uses.
C717 Terminology of Building Seals and Sealants
1.2 The type of membrane system described in this speci-
C719 Test Method for Adhesion and Cohesion of Elasto-
fication is used for pedestrian and vehicular traffic and in
meric Joint Sealants Under Cyclic Movement (Hockman
high-abrasion applications. The membrane may be single- or
Cycle)
multi-component, and may consist of one or more coats (for
C794 Test Method for Adhesion-in-Peel of Elastomeric
example base coat, top coat, etc.). The coat(s) may be built to
Joint Sealants
the desired thickness in one or more applications. One coat
C836 Specification for High Solids Content, Cold Liquid-
(base coat) provides the primary waterproofing function and
Applied Elastomeric Waterproofing Membrane for Use
normally comprises the major amount of organic material in
with Separate Wearing Course
the membrane. The function of the top coat(s) is to resist wear
C1250 Test Method for Nonvolatile Content of Cold
and weather. Aggregate may be used as a component of the
Liquid-Applied Elastomeric Waterproofing Membranes
membrane system, as all or part of a course, to increase wear
C1305 Test Method for Crack Bridging Ability of Liquid-
and skid resistance.
Applied Waterproofing Membrane
1.3 Thecommitteewithjurisdictionoverthisstandardisnot
C1442 Practice for Conducting Tests on Sealants Using
aware of any comparable standards published by other orga-
Artificial Weathering Apparatus
nizations.
D412 Test Methods for Vulcanized Rubber and Thermo-
1.4 Test methods in this specification require a minimum
plastic Elastomers—Tension
0.5-mm (0.020-in.) base coat dry film thickness. Actual thick-
D471 Test Method for Rubber Property—Effect of Liquids
ness required for a particular application and the use of
D609 Practice for Preparation of Cold-Rolled Steel Panels
aggregate in topcoats shall be established by the membrane
for Testing Paint, Varnish, Conversion Coatings, and
manufacturer.
Related Coating Products
1.5 The values stated in SI units are to be regarded as the
D1133 Test Method for Kauri-Butanol Value of Hydrocar-
standard. The values given in parentheses are provided for
bon Solvents
information purposes only.
D2370 Test Method for Tensile Properties of Organic Coat-
1.6 The following safety hazards caveat pertains only to the
ings
test method portion, Section 5, of this specification: This
G113 TerminologyRelatingtoNaturalandArtificialWeath-
standard does not purport to address all of the safety problems,
ering Tests of Nonmetallic Materials
if any, associated with its use. It is the responsibility of the user
1
This specification is under the jurisdiction of ASTM Committee C24 on
Building Seals and Sealants and is the direct responsibility of Subcommittee C24.80
2
on Building Deck Waterproofing Systems (Disbanded 6/06). For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved July 1, 2006. Published August 2006. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1981. Last previous edition approved in 2005 as C957 – 05a. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/C0957-06. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C957 – 06
TABLE 1 Requirements
Property Requirement Test Method
A
Weight loss of base coat, max, % 40 C1250
Low temperature crack bridging No cracking in base coat C1305 as modified in 5.5 of this specification
Adhesion-in-peel afte
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