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ASTM C1325-2008 Standard Specification for Non-Asbestos Fiber-Mat Reinforced Cementitious Backer Units.pdf

1、Designation: C 1325 08Standard Specification forNon-Asbestos Fiber-Mat Reinforced Cementitious BackerUnits1This standard is issued under the fixed designation C 1325; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last

2、 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 covers non-asbestos fiber-mat rein-forced cementitious backer units manufactured to be dimen-sionally

3、stable and suitable as either an unfinished substrate(see Note 1) or as a substrate for decoration such as naturalstone or tile on walls, floors, or decks in wet and dry areas. Itis also suitable to be used as a substrate in the Application ofClass PB Exterior Insulation Finish Systems (Practice C 1

4、397),the Application of Direct-Applied Finish Systems (PracticeC 1516), and the Application of Exterior Insulation FinishSystems Class PI (Practice C 1535).NOTE 1When used as an unfinished substrate, consult the manufac-turers written installation literature for proper application details.1.2 This s

5、pecification is not applicable to asbestos-cementflat sheets (Specification C 220); non-asbestos fiber cement flatsheets for exterior applications such as claddings, facades,curtain walls, and soffits (Specification C 1186); gypsum back-ing board, coreboard, and shaftliner (Specification C 442);wate

6、r-resistant gypsum backing board (Specification C 630);glass mat gypsum backing board (Specification C 1178); par-ticle boards (Definitions D 1554); and discrete non-asbestosfiber cement interior substrate sheets (Specification C 1288).1.3 UnitsThe values stated in inch-pound units are to beregarded

7、 as standard. The values given in parentheses aremathematical conversions to SI units that are provided forinformation only and are not considered standard.2. Referenced Documents2.1 ASTM Standards:2C 220 Specification for Flat Asbestos-Cement SheetsC 442/C 442M Specification for Gypsum Backing Boar

8、d,Gypsum Coreboard, and Gypsum Shaftliner Board3C 473 Test Methods for Physical Testing of Gypsum PanelProductsC 630/C 630M Specification for Water-Resistant GypsumBacking Board3C 666/C 666M Test Method for Resistance of Concrete toRapid Freezing and ThawingC 947 Test Method for Flexural Properties

9、of Thin-SectionGlass-Fiber-Reinforced Concrete (Using Simple BeamWith Third-Point Loading)C 1154 Terminology for Non-Asbestos Fiber-ReinforcedCement ProductsC 1178/C 1178M Specification for Coated Glass MatWater-Resistant Gypsum Backing PanelC 1185 Test Methods for Sampling and Testing Non-Asbestos

10、Fiber-Cement Flat Sheet, Roofing and SidingShingles, and ClapboardsC 1186 Specification for Flat Non-Asbestos Fiber-CementSheetsC 1288 Specification for Discrete Non-Asbestos Fiber-Cement Interior Substrate SheetsC 1397 Practice for Application of Class PB Exterior Insu-lation and Finish SystemsC 15

11、16 Practice for Application of Direct-Applied ExteriorFinish SystemsC 1535 Practice for Application of Exterior Insulation andFinish Systems Class PID 1037 Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel MaterialsD 1554 Terminology Relating to Wood-Base Fiber andParticle

12、 Panel MaterialsD 2394 Test Methods for Simulated Service Testing ofWood and Wood-Base Finish FlooringE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsG21 Practice for Determining Resistance of SyntheticPolymeric Materials to FungiG22 Practice for Determining Resistance of Pla

13、stics toBacteria32.2 ANSI Standards:41This specification is under the jurisdiction of ASTM Committee C17 onFiber-Reinforced Cement Products and is the direct responsibility of SubcommitteeC17.01 on Non-Asbestos Fiber-Mat Reinforced Products.Current edition approved March 1, 2008. Published April 200

14、8. Originallyapproved in 1996. Last previous edition approved in 2004 as C 1325 04.2For 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 pa

15、ge onthe ASTM website.3Withdrawn.4Available from American National Standards Institute, 11 W. 42nd St., 13thFloor, New York, NY 10036.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.A118.1 Specification for Dry-Set Portland Cement Mo

16、rtarA118.4 Specification for Latex-Portland Cement MortarA136.1 Standard for Organic Adhesives for Installation ofCeramic Tile3. Terminology3.1 Definitions Refer to Terminology C 1154.4. Classification4.1 Flat sheets covered by this specification are divided intotwo types, according to their intende

17、d application.4.1.1 Type ASheets are intended for exterior applicationsas a substrate for other cladding materials, or as an unfinishedsubstrate for decoration such as natural stone, tile, or coatings.Type A products are also suitable for interior use.4.1.2 Type BSheets are intended for covered exte

18、riorapplications such as soffit areas, or for interior dry or wet areaapplications as a desired unfinished substrate or an unfinishedsubstrate for decoration such as natural stone or tile, wheresubstrate dimensional stability is required.NOTE 2Flat sheets may be supplied coated or uncoated.5. Compos

19、ition and Manufacture5.1 CompositionThis specification is applicable to non-asbestos fiber-mat reinforced cementitious backer units con-sisting essentially of an inorganic hydraulic binder or a calciumsilicate binder formed by the chemical reaction of a siliceousmaterial and a calcareous material, r

20、einforced by fiber-matmade of organic fibers, inorganic non-asbestos fibers, or both.NOTE 3Process aids, fillers, pigments, and other fibers that arecompatible with the fiber-mat cement may be added.5.2 ManufactureThese products are formed either with orwithout pressure and cured, either under natur

21、al or acceleratedconditions, to meet the property requirements of this specifi-cation.6. Mechanical and Physical Properties6.1 Mechanical and physical properties shall be determinedon an uncoated product wherever practical. Where the productsare supplied coated, this material shall also be tested wi

22、th theresults identified as applying to coated material.6.2 SamplingObtain 5 samples of the particular cementsubstrate sheet to be tested from a commercial lot of not lessthan 50 000 ft2to conduct the tests described in this specifi-cation.6.3 Mechanical Properties:6.3.1 Flexural StrengthWhen tested

23、 in accordance withTest Method C 947, flexural strength shall be not less than 750psi (5170 kPa).6.3.2 Sheets shall be tested and specified in both the wet andequilibrium conditions and shall meet the minimum wet andminimum equilibrium flexural strength requirements.NOTE 4When sampled from continuou

24、s production, these tests maybe conducted on dry, equilibrium, or saturated specimens, provided arelationship can be established between this testing and the specifiedvalues.6.4 Physical Properties:6.4.1 DensityNominal values and tolerances for densityshall be stated by the manufacturer for each of

25、the products.When tested in accordance with the test method specified inTest Methods C 1185, the value for the density shall complywith the value stated by the manufacturer.6.4.2 Modulus of ElasticityValues for the modulus ofelasticity shall be stated by the manufacturer for each of theproducts. Whe

26、n tested in accordance with Test Method C 947,the value for modulus of elasticity shall comply with the valuestated by the manufacturer. Calculate the modulus of elasticityfor each sample specimen by the following equation:E 5 5P22 P1! 3 L3/27bd3y22 y1! (1)where:E = modulus of elasticity, psi (MPa),

27、P2and P1= loads, lb (N), taken from two points within thelinear section of the plot,y2and y1= deflections, in. (mm) corresponding to theloads selected,b = width of specimen, in. (mm),d = thickness of specimen, in. (mm), andL = span, in. (mm).7. Dimensions and Tolerances7.1 Method of MeasurementThe m

28、ethod of measurementshall be in accordance with Test Methods C 473.7.2 Nominal Length and WidthFiber-mat reinforced ce-mentitious backer units are typically supplied in nominallengths of 48 in. (1219 mm) to 96 in. (2438 mm) and nominalwidths of 32 in. (810 mm) to 48 in. (1219 mm). Lengths andwidths

29、other than stated above are not prohibited from beingsupplied.7.3 Nominal ThicknessFiber-mat reinforced cementitiousbacker units are typically supplied in nominal thicknesses of14in. (6 mm) to58 in. (16 mm). Thicknesses other than statedabove are not prohibited from being supplied.7.4 Length and Wid

30、th ToleranceThe tolerance from thenominal value shall be 618 in. (3 mm).7.5 Thickness ToleranceThe maximum difference be-tween extreme values of the thickness measurement within asheet shall not exceed 0.03 in. (0.8 mm). Thickness variationfrom sheet to sheet shall not exceed 0.03 in. (0.8 mm).7.6 S

31、quareness ToleranceThe length of the diagonalsshall not vary by more than132 in./ft (2.6 mm/m) of the lengthof the sheets. Opposite sides of the sheet shall not vary inlength by more than132 in./ft (2.6 mm/m).7.7 Edge Straightness ToleranceThe sheet edges shall bestraight within132 in./ft (2.6 mm/m)

32、 of length or width.8. Workmanship8.1 Workmanship Sheets shall be free of defects that willimpair erection, use, or serviceability.9. Inspection and Acceptance9.1 Inspection of material, if required, shall be at the pointof shipment. The inspector representing the purchaser shallhave authorized acce

33、ss to the carriers being loaded for ship-ment to the purchaser. The purchaser shall be afforded allreasonable and available facilities at the point of shipment forC1325082sampling and inspection of the material, which shall beconducted so as not to interfere unnecessarily with the loadingof the carr

34、iers.9.2 Third party certification, either continuous or at regularintervals, shall be recognized as an alternative to lot inspection.9.3 Failure to conform to any one of the requirements of thisspecification shall constitute grounds for nonacceptance.10. Product Marking10.1 IdentificationProduct ma

35、rking shall include trade-mark, type of product (Aor B), or other means of identificationthat ensures that the manufacturer and product type can beidentified. The method of marking shall be stated in themanufacturers catalog.11. Packaging and Storage11.1 Commercial PackagingFlat sheets shall be pack

36、agedso as to prevent damage during shipment.11.2 StorageFlat sheets shall be stacked on supports thatwill keep the sheets level and flat. The sheets shall be stackedwith the edges square and flush and covered to provideprotection from the weather until used.12. Keywords12.1 acceptance; air cured; ap

37、pearance; density; edgestraightness; finish; flexural strength; glass mat cement sheet;inspection; interior wet area application; length and widthtolerance; mechanical properties; minimum equilibriumstrength; minimum wet strength; moisture content; moisturemovement; nominal length; nominal thickness

38、; nominal width;non-asbestos fiber-mat; packaging; physical properties; pres-sure cured; sampling; shipping; squareness tolerance; storage;supplementary requirements; supplementary tests; surfaceburning characteristics; thickness requirements; thickness tol-erance; third party certification; toleran

39、ce; type tests; warmwater resistance; workmanshipSUPPLEMENTARY REQUIREMENTSS1. Supplementary TestsS1.1 Supplementary tests for fiber-mat reinforced cementi-tious backer units shall consist of once only supplementarytest, with the manufacturers statement of results providedupon customers request. Fun

40、damental changes in formulationor methods of manufacture, or both, shall require the subse-quent retesting of the supplementary tests.S1.2 Supplementary tests shall be determined on uncoatedproduct wherever practical. Where fiber-mat reinforced cemen-titious backer units are supplied coated, this ma

41、terial shall alsobe tested with the results identified as applying to coatedmaterial.S1.3 The following supplementary tests shall be required:Moisture ContentMoisture MovementWarm Water ResistanceSurface Burning CharacteristicsShear Bond Strength (Dry-Set Portland Cement Mortar)Shear Bond Strength (

42、Latex-Portland Cement Mortar)Shear Bond Strength (Organic Adhesive Type 1)Nail-Head Pull-Through (roofing nail)Modulus of ElasticityMold ResistanceCompression IndentationFalling Ball ImpactBacteria ResistanceFreeze Thaw ResistanceS1.3.1 Moisture ContentState the percentage of moisturecontent of the

43、fiber-mat reinforced cementitious backer unitswhen conditioned at 50 6 5 % relative humidity and atemperature of 73 6 4F (23 6 2C) in accordance with TestMethod C 1185.S1.3.2 Moisture MovementThe linear variation withchange in moisture content shall be stated as the percentagechange in length based

44、on a relative humidity change from 30% to 90 % in accordance with Test Method D 1037. The linearvariation with change shall be less than or equal to 0.07 %. Forthe purpose of this test, obtain 5 samples of the particularcement substrate sheet to be tested from a commercial lot ofnot less than 50 000

45、 ft2.S1.3.3 Warm Water ResistanceThe specimens, whentested in accordance with Test Method C 1185, shall not showvisible cracks or structural alteration such as to affect theirperformance in use. The ratio of the average strengths ascalculated from test results shall not be less than 70 %.S1.3.4 Surf

46、ace Burning CharacteristicsWhen utilized asa finished substrate without decoration, fiber-mat reinforcedcementitious backer units shall have a reported flame spreadindex of 10 or less and a smoke developed index of not morethan 5 when tested in accordance with Test Method E84. Testsshall be conducte

47、d on samples that have been cured for 28 daysin a controlled atmosphere of 73 6 4F (23 6 2C) and 50 65 % relative humidity.S1.3.5 Shear Bond Strength (Dry-Set Portland CementMortar)Fiber-mat reinforced cementitious backer unitstested in accordance with ANSI A118.1 (fiber-mat reinforcedcementitious b

48、acker units to fiber-mat reinforced cementitiousbacker units) shall demonstrate a minimum shear bond strengthat 7 day curing of 50 psi (345 kPa).S1.3.6 Shear Bond Strength (Latex-Portland CementMortar)Fiber-mat reinforced cementitious backer unitstested in accordance with ANSI A118.4 (fiber-mat rein

49、forcedcementitious backer units to fiber-mat reinforced cementitiousbacker units) shall demonstrate a minimum shear bond strengthat 7 day curing of 50 psi (345 kPa).S1.3.7 Shear Bond Strength (Organic Adhesives Type1)Fiber-mat reinforced cementitious backer units tested inaccordance with ANSI A136.1 (fiber-mat reinforced cementi-tious backer units to fiber-mat reinforced cementitious backerunits) shall demonstrate a minimum shear bond strength at 7day curing of 50 psi (345 kPa).S1.3.8 Nail-Head Pull ThroughFiber-mat reinforced ce-mentit

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