ASTM_C_957_-_C_957M_-_15.pdf

Designation:C957/C957M15Standard Specification forHigh-Solids Content,Cold Liquid-Applied ElastomericWaterproofing Membrane With Integral Wearing Surface1This standard is issued under the fixed designation C957/C957M;the number immediately following the designation indicates the yearof 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.Scope1.1 This specification describes the required properties andtest methods for a cold liquid-applied elastomeric membranefor waterproofing building decks not subject to hydrostaticpressure.The specification applies only to a membrane systemthat has an integral wearing surface.This specification does notinclude specific requirements for skid resistance or fireretardance,although both may be important in specific uses.1.2 The type of membrane system described in this speci-fication is used for pedestrian and vehicular traffic and inhigh-abrasion applications.The membrane may be single-ormulti-component,and may consist of one or more coats(forexample base coat,top coat,etc.).The coat(s)may be built tothe desired thickness in one or more applications.One coat(base coat)provides the primary waterproofing function andnormally comprises the major amount of organic material inthe membrane.The function of the top coat(s)is to resist wearand weather.Aggregate may be used as a component of themembrane system,as all or part of a course,to increase wearand skid resistance.1.3 The committee with jurisdiction over this standard is notaware of any comparable standards published by other orga-nizations.1.4 Test methods in this specification require a minimum0.5-mm 0.020-in.base coat dry film thickness.Actual thick-ness required for a particular application and the use ofaggregate in topcoats shall be established by the membranemanufacturer.1.5 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.6 The following safety hazards caveat pertains only to thetest method portion,Section 5,of this specification:Thisstandard does not purport to address all of the safety problems,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standards:2C501 Test Method for Relative Resistance to Wear ofUnglazed Ceramic Tile by the Taber AbraserC794 Test Method forAdhesion-in-Peel of Elastomeric JointSealantsC1305 Test Method for Crack Bridging Ability of Liquid-Applied Waterproofing MembraneC1442 Practice for Conducting Tests on Sealants UsingArtificial Weathering ApparatusD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD471 Test Method for Rubber PropertyEffect of LiquidsD609 Practice for Preparation of Cold-Rolled Steel Panelsfor Testing Paint,Varnish,Conversion Coatings,andRelated Coating ProductsD1079 Terminology Relating to Roofing and WaterproofingD1133 Test Method for Kauri-Butanol Value of Hydrocar-bon SolventsD2370 Test Method for Tensile Properties of Organic Coat-ingsD6511 Test Methods for Solvent Bearing Bituminous Com-poundsG113 Terminology Relating to Natural and Artificial Weath-ering Tests of Nonmetallic Materials1This specification is under the jurisdiction of ASTM Committee D08 onRoofing and Waterproofing and is the direct responsibility of Subcommittee D08.25on Liquid Applied Polymeric Materials Used for Roofing and WaterproofingMembranes that are Directly Exposed to the Weather.Current edition approved Jan.1,2015.Published January 2015.Originallyapproved in 1981.Last previous edition approved in 2014 as C957/C957M 14.DOI:10.1520/C0957_C0957M-15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 2.2 U.S.Department of Commerce Standard:Product Standard PS-1,Construction and Industrial Ply-wood33.Terminology3.1 DefinitionsRefer to Terminology D1079 for defini-tions of terms used in this guide.3.2 The definitions given in Terminology G113 for termsrelated to natural and artificial weathering tests are applicableto this specification.4.Physical Requirements4.1 MaterialMembrane materials shall cure,after appli-cation by spreading or spraying,to form an elastomeric filmsystem composed of one or more layers and capable ofmaintaining a seal against water despite the existence orde