1、Designation:C63915Standard Test Method forRheological(Flow)Properties of Elastomeric Sealants1This standard is issued under the fixed designation C639;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number
2、 in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method describes a laboratory procedure forthe det
3、ermination of rheological(flow)properties of single-and multicomponent chemically curing sealants for use inbuilding construction.1.2 Other suitable flow characteristics may be agreed uponbetween the seller and purchaser or specifier.Special nonsagproperties and lower flow characteristics may be req
4、uired foruse in sloping joints where absolute leveling is not desired.NOTE1The sealants are supplied in various rheological propertiesranging from pourable fluids to stiff nonsagging pastes.Multicomponentsealants are supplied as a base component with an activator or curingagent separately packaged.A
5、fter mixing the multiple parts,the sealant isready for application.Single-component sealants are supplied ready foruse upon opening of the package and usually depend on the externalenvironment for cure.1.3 This test method describes four types of joint sealants:1.3.1 Type ISingle-component flowable
6、or self-leveling,1.3.2 Type IISingle-component nonsag,1.3.3 Type IIIMulticomponent flowable or self-leveling,and1.3.4 Type IVMulticomponent nonsag.1.4 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.5 This standard does not pu
7、rport to address the safetyproblems associated with its use.It is the responsibility of theuser of 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:2C717 Terminology of B
8、uilding Seals and Sealants3.Terminology3.1 DefinitionsRefer to Terminology C717,Section 4.1,for definitions of the following terms used in this standard:chemically curing sealants,compound,elastomeric,flow(slump),non-sag sealant(non-slump),sealant,self-levelingsealant(flowable),standard conditions.4
9、.Comparison to Other Standards4.1 ISO7390:1987BuildingConstruction-JointingProducts-Determination of Resistance to Flow5.Significance and Use5.1 The results obtained from this test method are simply ameasure of the degree of horizontal or vertical flow ofsingle-component or multi-component sealants
10、when appliedto a set joint configuration at two pre-determined temperatures.Only samples conditioned at the same temperature may bedirectly compared.6.Apparatus6.1 Refrigerator,controlled at 4.4 6 2C(40 6 3.6F).6.2 Oven,convention-type,controlled at 50 6 2C(12263.6F).6.3 Channel,one,stainless steel(
11、Type 304,No.2-B finish,No.16 gage),inside dimensions 19 mm wide,13 mm deep,152 mm long(34by12by 6 in.),and closed at both ends(seeFig.1a).1This test method is under the jurisdiction ofASTM Committee C24 on BuildingSeals and Sealants and is the direct responsibility of Subcommittee C24.20 onGeneral T
12、est Methods.Current edition approved June 1,2015.Published August 2015.Originallyapproved in 1969.Last previous edition approved in 2011 as C639 01(2011).DOI:10.1520/C0639-15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Ann
13、ual 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 6.4 Channels,two,stainless steel(Type 304,No.2-B finish,No.16 gage),inside dimens
14、ions 19 mm wide,13 mm deep,152 mm long(34by12by 6 in.)with both ends open and theback surface extended 51 mm(2 in.)(see Fig.1b).7.Standard Test Conditions7.1 Unless otherwise specified,standard conditions shall bedefined in Terminology C717.8.Procedures8.1 Test for Type I Sealants:8.1.1 Clean the cl
15、osed-end channel(Fig.1a)with methylethyl ketone or similar solvent followed by a thorough cleaningwith a detergent solution and a final rinse with distilled ordeionized water,and then air dry.8.1.2 Before preparing the test assembly,condition at least100 g of the compound under test in the unopened
16、container forat least 16 h at standard conditions.Then condition thecompound for 16 to 24 h and the channel for 2 h in arefrigerator held at 4.4 6 2C(40 6 3.6F).At the end of theconditioning periods,pour the compound into the conditionedchannel held horizontally at the latter temperature and maintainthe test specimen at this temperature for 4 h.At the end of thisperiod,examine the compound for flow properties.8.2 Tests for Type II Sealants:8.2.1 Vertical SlumpBefore preparing the test assemblies
