1、Designation: C 957 06Standard Specification forHigh-Solids Content, Cold Liquid-Applied ElastomericWaterproofing Membrane With Integral Wearing Surface1This standard is issued under the fixed designation C 957; the number immediately following the designation indicates the year oforiginal adoption o
2、r, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification describes the required properties andtest methods for a co
3、ld 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 fire retar-dance, althou
4、gh 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 coa
5、t, 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 m
6、ay 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.
7、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 SI units are to be regarded as thestandard. The values given in parentheses are provide
8、d forinformation purposes only.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
9、to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2C 501 Test Method for Relative Resistance to Wear ofUnglazed Ceramic Tile by the Taber AbraserC 717 Terminology of Building Seals and
10、 SealantsC 719 Test Method for Adhesion and Cohesion of Elasto-meric Joint Sealants Under Cyclic Movement (HockmanCycle)C 794 Test Method for Adhesion-in-Peel of ElastomericJoint SealantsC 836 Specification for High Solids Content, Cold Liquid-Applied Elastomeric Waterproofing Membrane for Usewith S
11、eparate Wearing CourseC 1250 Test Method for Nonvolatile Content of ColdLiquid-Applied Elastomeric Waterproofing MembranesC 1305 Test Method for Crack Bridging Ability of Liquid-Applied Waterproofing MembraneC 1442 Practice for Conducting Tests on Sealants UsingArtificial Weathering ApparatusD 412 T
12、est Methods for Vulcanized Rubber and Thermo-plastic ElastomersTensionD 471 Test Method for Rubber PropertyEffect of LiquidsD 609 Practice for Preparation of Cold-Rolled Steel Panelsfor Testing Paint, Varnish, Conversion Coatings, andRelated Coating ProductsD 1133 Test Method for Kauri-Butanol Value
13、 of Hydrocar-bon SolventsD 2370 Test Method for Tensile Properties of OrganicCoatingsG113 Terminology Relating to Natural and ArtificialWeathering Tests of Nonmetallic Materials1This specification is under the jurisdiction of ASTM Committee D08 onRoofing and Waterproofing and is the direct responsib
14、ility of Subcommittee D08.22on Waterproofing and Dampproofing Systems.Current edition approved July 1, 2006. Published August 2006. Originallyapproved in 1981. Last previous edition approved in 2005 as C 957 05a.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Cus
15、tomer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.2.2 U.S. Department of Commerce St
16、andard:Product Standard PS-1, Construction and Industrial Ply-wood33. Terminology3.1 DefinitionsRefer to Terminology C 717 for definitionsof terms used in this guide.3.2 The definitions given in Terminology G113for termsrelated to natural and artificial weathering tests are applicableto this specifi
17、cation.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 ordevelopment of small (1.6 mm (116 in.) maximu
18、m) cracks inthe substrate. It must maintain complete integrity under pedes-trian or vehicular traffic.4.2 The physical, mechanical, and performance propertiesof the membrane shall conform to the requirements describedin Table 1.5. Test Methods5.1 Standard ConditionsStandard conditions for all testss
19、hall be 23 6 2C (70 to 77F) and 50 6 5 % relativehumidity:5.2 Conditioning and Mixing:5.2.1 Store all membrane materials to be tested in anunopened container at standard conditions for at least 24 hbefore preparing any test specimens.5.2.2 Follow the manufacturers instructions for all mixingand prep
20、aration of membrane materials.5.3 SubstratesIn addition to the substrates specifiedherein, conduct tests on such other substrates as may berequired by the specifier.5.4 PrimerWhen required by the manufacturer, use aprimer, as directed by the manufacturer, on all substratematerials in all test assemb
21、lies.5.5 Low-Temperature Flexibility and Crack BridgingPerform the test as specified in the Test Method section ofSpecification C 836, and conform to specified requirements.Make the following changes in the test method of SpecificationC 836.5.5.1 Use equipment similar to that in Test Method C 719.Ot
22、her equipment, such as an automatic tension-compressiontest machine fitted with an environmental chamber, is permis-sible, provided it can give the required strain rates andenvironment.5.5.2 Use 25.4 by 25.4 by 50.8 mm (1 by 1 by 2 in.) mortarblocks.5.5.3 Cement aluminum angles 75 by 50 by 25 mm (3
23、by 2by 1 in.), positioned with the 50-mm legs pointed down, to thebottom of the mortar blocks with an epoxy adhesive forinsertion into an automatic compression and extension ma-chine.5.5.4 Test the total membrane system (primers, base coat(s)and top coat(s) including any aggregate specified. Totalth
24、ickness of the cured membrane, excluding aggregate, shall bea minimum of 0.5 mm (0.020 in.).5.5.5 Extend the blocks until the space between each is 1.6mm (116 in.) rather than 3.2 mm (18 in.).5.6 Adhesion-in-Peel after Water ImmersionPerform thetest as specified in Test Method C 794 with the followi
25、ngqualifications:5.6.1 Cement mortar shall be used as the test substrate.Additional substrates, such as plywood, shall be used whenspecified.5.6.2 Test only the base coat and any primer.5.6.3 Cast the base coat in the thickness specified by themanufacturer for one coat of the base coat, or the wet-f
26、ilmthickness necessary to attain a dry-film thickness of 0.5 mm(0.020 in.), whichever is greater. Follow the instructions of themanufacturer regarding the time of placement of the airplanecloth or aluminum screen.5.6.4 For testing on plywood, use the A side of ExteriorType Marine Grade AA, AB, or AC
27、 plywood conforming toU.S. Department of Commerce, Plywood Standard PS-1 as thesubstrate.5.6.5 The sample shall be cured 2 weeks at standardconditions followed by 1 week at 70C (158F).3Available from Superintendent of Documents, U.S. Government PrintingOffice, Washington, DC 20402.TABLE 1 Requiremen
28、tsProperty Requirement Test MethodWeight loss of base coat,Amax, % 40 C 1250Low temperature crack bridging No cracking in base coat C 1305 as modified in 5.5 of this specificationAdhesion-in-peel after water immersion, min, N/m (lbf/in.) C 794 as modified in 5.6 of this specificationCement mortar su
29、bstrate 875 (5)Plywood substrate 525 (3)Chemical resistance, min, avg % tensile retention D 471 as modified in 5.7 of this specificationWater exposure 70Ethylene glycol exposure 70Mineral spirits exposure 45Weathering resistance and recovery from elongation, min, % 5.8 of this specificationRecovery
30、from elongation, initial 90Tensile retention 80Elongation retention 90Abrasion resistance, max, mg (oz.) 50 (0.002) C 501 as modified in 5.9 of this specificationStability, min, months 6 5.10 of this specificationAA separate top coat or primer, or both, if required by manufacturer, shall comply with
31、 the manufacturers specifications.C9570625.7 Chemical ResistancePerform the test for change intensile strength as specified in Test Method D 471, with thefollowing qualifications:5.7.1 Cast test samples of the base coat to a minimum curedthickness of 0.5 mm (0.020 in.) in accordance with thedirectio
32、ns of the manufacturer. Test any required top coatsseparately from the base coat. Cast the top coat test samplesaccording to Method A of Test Methods D 412 or, in the caseof coatings thinner than 0.16 mm (6.25 mils), by Test MethodD 2370.5.7.2 Cure all test samples for 3 weeks at standard condi-tion
33、s.5.7.3 For each test liquid, cut at least five dumbbells asspecified in Method A of Test Methods D 412, using Die C. Inaddition, cut and retain ten dumbbells as a control.5.7.4 The test liquids shall be water, ethylene glycol, andmineral spirits of Kauri Butanol Value 33 to 35, as determinedby Test
34、 Method D 1133.5.7.5 Immerse the test samples in test liquids for 336 h (14days). Liquid temperature shall be 23 6 1C (73 6 2F). Agethe ten control dumbbells under standard conditions for 2weeks.5.7.6 Test the dumbbells and calculate the tensile propertiesas specified in Test Methods D 412. Make the
35、 crosshead speed500 mm (20 in.)/min, and set the jaws 51 mm (2 in.) apart. Ifan extensiometer is used, make its gage length 25 6 0.25 mm(1.00 6 0.01 in.).5.7.7 Determine tensile and elongation retention as follows:TR 5PtPc3 100 (1)where:TR = percent retention of tensile property,Pt= property after t
36、est exposure, andPc= property of the control.5.8 Weathering Resistance and Recovery from Elongation:5.8.1 Cast a free film of the total membrane system,excluding any aggregate, on release paper or other suitablesubstrate specified by the manufacturer to a minimum curedthickness of 0.5 mm (0.020 in.)
37、, of sufficient size to provide atleast twenty dumbbell-shaped samples as specified in TestMethods D 412, Die C.5.8.2 Cure the film 21 days at standard conditions followedby 7 days at 70 6 2C (158 6 4F) in a circulating hot-airoven.5.8.3 Cut 20 dumbbell specimens, as specified in TestMethods D 412,
38、Die C from the cured film. Ten specimens areweathered as described in 5.8.4 and 5.8.5 and ten specimensare retained as unexposed file specimens.5.8.4 Expose the ten specimens in one of the three types oflaboratory accelerated weathering devices described in PracticeC 1442. The devices use either xen
39、on arc, fluorescent UV, oropen flame carbon arc radiation. Consult Practice C 1442 forthe test parameters. Because of differences in type of lightsource and test conditions, test results may differ with the typeof device used. The choice of device shall be by mutualagreement among the interested par
40、ties.5.8.5 Expose the ten specimens for a minimum of 500 h.The exposure duration shall be sufficiently long to screen forproducts with unacceptable weather resistance. The requiredduration may differ with the type of weathering device used.For the xenon arc device, the radiant exposure is 500 h at a
41、nirradiance level of 0.51 W/(m2nm) at 340 nm is 917.5kJ/(m2nm) at 340 nm. See Annex A1 in Practice C 1442 fordetermining the exposure time required to obtain the sameradiant exposure at other irradiance levels.5.8.6 After weathering, allow the specified samples toequilibrate for at least 24 h under
42、standard conditions. Set thejaws of the tension tester 51 mm (2 in.) apart. Place the benchmarks on the sample pieces, as specified in Test MethodsD 412. Following the specified procedures, test the samplepieces for tensile strength and elongation, using a crossheadspeed of 500 mm (20 in.)/min. Allo
43、w them to recover for 30min and measure elongation after recovery. Determine recov-ery as follows:R 5EB EREB3 100 (2)where:R = percent recovery,EB= percent elongation at break, andER= percent elongation after recovery.Tensile and elongation retention are defined in 5.7.7.5.9 Abrasion ResistancePerfo
44、rm the test as specified inTest Method C 501, with the following qualifications:5.9.1 Cast test samples of the entire membrane excludingaggregate to a minimum total cured thickness of 0.5 mm (0.020in.) on a 102 mm (4-in.) square steel panel 3 mm (0.125 in.)thick with a 6.33-mm (14-in.) hole drilled
45、in the center. Preparepanels as specified in Practice D 609. Steel shall be Type 3.Preparation shall be Method D.5.9.2 Cure the samples 14 days at standard conditionsfollowed by 7 days at 70 6 2C (158 6 4F) in a circulatinghot-air oven.5.9.3 Run test for 1000 cycles using 1000-g weight and theCS-17
46、abrasion wheel.5.10 StabilityWhen stored at a temperature not exceeding27C (80F) in a dry environment, or kept protected frommoisture, or both, the membrane material shall be capable ofmeeting the requirements of this specification for at least sixmonths from the time of production.6. Rejection and
47、Resubmittal6.1 Failure to conform to any one of the requirementsprescribed in this specification shall constitute grounds forrejection. The seller shall have the right to reinspect therejected shipment and resubmit the lot after removal of thosepackages not conforming to the specified requirements.7
48、. Packaging and Product Marking7.1 The date of production shall be marked on each pack-age.7.2 Unless otherwise specified in the contract or order, thematerial shall be packaged in standard commercial containersconstructed so as to ensure acceptance by common or othercarrier for safe transportation
49、to the point of delivery. Shippingcontainers shall be marked with the name, type, and quantity ofC957063the material contained therein, as defined by the contract ororder under which the shipments are made.8. Report8.1 The test report shall include a brief description of thesystem tested including thicknesses of layers of material,substrates used on and whether a primer was used.8.2 Report type and description of laboratory acceleratedweathering device, test cycle, test parameters, and duration ofexposure.9. Keywords9.1 liquid-applied; membrane; wate
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