1、Designation: C1325 08bC1325 14Standard Specification forNon-Asbestos Fiber-Mat Reinforced Cementitious BackerUnits1This standard is issued under the fixed designation C1325; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year
2、of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers non-asbestos fiber-mat reinforced cementitious backer units manufactured to be dimension
3、allystable and suitable as either an unfinished substrate (see Note 1) or as a substrate for decoration such as natural stone or tile onwalls, floors, or decks in wet and dry areas. It is also suitable to be used as a substrate in the Application of Class PB ExteriorInsulation Finish Systems (Practi
4、ce C1397), the Application of Direct-Applied Finish Systems (Practice C1516), and theApplication of Exterior Insulation Finish Systems Class PI (Practice C1535).NOTE 1When used as an unfinished substrate, consult the manufacturers written installation literature for proper application details.1.2 Th
5、is specification is not applicable to asbestos-cement flat sheets (Specification C220); non-asbestos fiber cement flat sheetsfor exterior applications such as claddings, facades, curtain walls, and soffits (Specification C1186); gypsum backing board,coreboard, and shaftliner (Specification C442/C442
6、MC1396/C1396M); water-resistant gypsum backing board (SpecificationC630/C630MC1396/C1396M); glass mat gypsum backing board (Specification C1178/C1178M); particle boards (DefinitionsD1554); and discrete non-asbestos fiber cement interior substrate sheets (Specification C1288).1.3 UnitsThe values stat
7、ed in inch-pound units are to be regarded as standard. The values given in parentheses aremathematical conversions to SI units that are provided for information only and are not considered standard.1 This specification is under the jurisdiction of ASTM Committee C17 on Fiber-Reinforced Cement Produc
8、tsand is the direct responsibility of Subcommittee C17.01 onNon-Asbestos Fiber-Mat Reinforced Products.Current edition approved Dec. 1, 2008Aug. 15, 2014. Published January 2009September 2014. Originally approved in 1996. Last previous edition approved in 2008 asC1325 08a.C1325 08b. DOI: 10.1520/C13
9、25-08B.10.1520/C1325-14.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that
10、 users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Co
11、nshohocken, PA 19428-2959. United States12. Referenced Documents2.1 ASTM Standards:2C220 Specification for Flat Asbestos-Cement SheetsC442/C442M Specification for Gypsum Backing Board, Gypsum Coreboard, and Gypsum Shaftliner Board (Withdrawn 2004)3C473 Test Methods for Physical Testing of Gypsum Pan
12、el ProductsC630/C630M Specification for Water-Resistant Gypsum Backing Board (Withdrawn 2004)3C666/C666M Test Method for Resistance of Concrete to Rapid Freezing and ThawingC947 Test Method for Flexural Properties of Thin-Section Glass-Fiber-Reinforced Concrete (Using Simple Beam WithThird-Point Loa
13、ding)C1154 Terminology for Non-Asbestos Fiber-Reinforced Cement ProductsC1178/C1178M Specification for Coated Glass Mat Water-Resistant Gypsum Backing PanelC1185 Test Methods for Sampling and Testing Non-Asbestos Fiber-Cement Flat Sheet, Roofing and Siding Shingles, andClapboardsC1186 Specification
14、for Flat Fiber-Cement SheetsC1288 Specification for Discrete Non-Asbestos Fiber-Cement Interior Substrate SheetsC1396/C1396M Specification for Gypsum BoardC1397 Practice for Application of Class PB Exterior Insulation and Finish Systems (EIFS) and EIFS with DrainageC1516 Practice for Application of
15、Direct-Applied Exterior Finish SystemsC1535 Practice for Application of Exterior Insulation and Finish Systems Class PID1037 Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel MaterialsD1554 Terminology Relating to Wood-Base Fiber and Particle Panel MaterialsD2394 Test Meth
16、ods for Simulated Service Testing of Wood and Wood-Base Finish FlooringE84 Test Method for Surface Burning Characteristics of Building MaterialsG21 Practice for Determining Resistance of Synthetic Polymeric Materials to FungiG22 Practice for Determining Resistance of Plastics to Bacteria (Withdrawn
17、2002)32.2 ANSI Standards:4A118.1 Specification for Dry-Set Portland Cement MortarA118.4 Specification for Latex-Portland Cement MortarA136.1 Standard for Organic Adhesives for Installation of Ceramic Tile3. Terminology3.1 DefinitionsRefer to Terminology C1154.4. Classification4.1 Flat sheets covered
18、 by this specification are divided into two types, according to their intended application.4.1.1 Type ASheets are intended for exterior applications as a substrate for other cladding materials, or as an unfinishedsubstrate for decoration such as natural stone, tile, or coatings. Type A products are
19、also suitable for interior use.4.1.2 Type BSheets are intended for covered exterior applications such as soffit areas, or for interior dry or wet areaapplications as a desired unfinished substrate or an unfinished substrate for decoration such as natural stone or tile, where substratedimensional sta
20、bility is required.NOTE 2Flat sheets may be supplied coated or uncoated.5. Composition and Manufacture5.1 CompositionThis specification is applicable to non-asbestos fiber-mat reinforced cementitious backer units consistingessentially of an inorganic hydraulic binder or a calcium silicate binder for
21、med by the chemical reaction of a siliceous materialand a calcareous material, reinforced by fiber-mat made of organic fibers, inorganic non-asbestos fibers, or both.NOTE 3Process aids, fillers, pigments, and other fibers that are compatible with the fiber-mat cement may be added.5.2 ManufactureThes
22、e products are formed either with or without pressure and cured, either under natural or acceleratedconditions, to meet the property requirements of this specification.6. Mechanical and Physical Properties6.1 Mechanical and physical properties shall be determined on an uncoated product wherever prac
23、tical. Where the products aresupplied coated, this material shall also be tested with the results identified as applying to coated material.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume
24、 information, refer to the standards Document Summary page on the ASTM website.3 The last approved version of this historical standard is referenced on www.astm.org.4 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.C1325
25、1426.2 SamplingObtain five samples of the particular cement substrate sheet to be tested from a commercial lot of not less than50 000 ft2 to conduct the tests described in this specification.6.3 Mechanical Properties:6.3.1 Flexural StrengthWhen tested in accordance with Test Method C947, flexural st
26、rength shall be not less than 750 psi(5170 kPa).6.3.2 Sheets shall be tested and specified in both the wet and equilibrium conditions and shall meet the minimum wet andminimum equilibrium flexural strength requirements.NOTE 4When sampled from continuous production, these tests may be conducted on dr
27、y, equilibrium, or saturated specimens, provided a relationshipcan be established between this testing and the specified values.6.4 Physical Properties:6.4.1 DensityNominal values and tolerances for density shall be stated by the manufacturer for each of the products. Whentested in accordance with t
28、he test method specified in Test Methods C1185, the value for the density shall comply with the valuestated by the manufacturer.6.4.2 Modulus of ElasticityValues for the modulus of elasticity shall be stated by the manufacturer for each of the products.When tested in accordance with Test Method C947
29、, the value for modulus of elasticity shall comply with the value stated by themanufacturer. Calculate the modulus of elasticity for each sample specimen by the following equation:E 55P 22P1!3L 3/27bd3y22y 1! (1)where:E = modulus of elasticity, psi (MPa),P2and P1 = loads, lb (N), taken from two poin
30、ts within the linear section of the plot,y2and y1 = deflections, in. (mm) corresponding to the loads 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 method of measurement shall be in accordan
31、ce with Test Methods C473.7.2 Nominal Length and WidthFiber-mat reinforced cementitious backer units are typically supplied in nominal lengths of 48in. (1219 mm) to 96 in. (2438 mm) and nominal widths of 32 in. (810 mm) to 48 in. (1219 mm). Lengths and widths other thanstated above are not prohibite
32、d from being supplied.7.3 Nominal ThicknessFiber-mat reinforced cementitious backer units are typically supplied in nominal thicknesses of 14 in.(6 mm) to 58 in. (16 mm). Thicknesses other than stated above are not prohibited from being supplied.7.4 Length and Width Tolerance ToleranceThe tolerance
33、from the nominal value shall be 618 in. (3 mm).7.5 Thickness ToleranceThe maximum difference between extreme values of the thickness measurement within a sheet shallnot exceed 0.03 in. (0.8 mm). Thickness variation from sheet to sheet shall not exceed 0.03 in. (0.8 mm).7.6 Squareness ToleranceThe le
34、ngth of the diagonals shall not vary by more than 132 in./ft (2.6 mm/m) of the length of thesheets. Opposite sides of the sheet shall not vary in length by more than 132 in./ft (2.6 mm/m).7.7 Edge Straightness Tolerance ToleranceThe sheet edges shall be straight within 132 in./ft (2.6 mm/m) of lengt
35、h or width.8. Workmanship8.1 WorkmanshipSheets shall be free of defects that will impair erection, use, or serviceability.9. Inspection and Acceptance9.1 Inspection of material, if required, shall be at the point of shipment. The inspector representing the purchaser shall haveauthorized access to th
36、e carriers being loaded for shipment to the purchaser. The purchaser shall be afforded all reasonable andavailable facilities at the point of shipment for sampling and inspection of the material, which shall be conducted so as not tointerfere unnecessarily with the loading of the carriers.9.2 Third
37、party certification, either continuous or at regular intervals, shall be recognized as an alternative to lot inspection.9.3 Failure to conform to any one of the requirements of this specification shall constitute grounds for nonacceptance.10. Product Marking10.1 IdentificationProduct marking shall i
38、nclude trademark, type of product (A or B), or other means of identification thatensures that the manufacturer and product type can be identified. The method of marking shall be stated in the manufacturerscatalog.C1325 14311. Packaging and Storage11.1 Commercial PackagingFlat sheets shall be package
39、d so as to prevent damage during shipment.11.2 StorageFlat sheets shall be stacked on supports that will keep the sheets level and flat. The sheets shall be stacked withthe edges square and flush and covered to provide protection from the weather until used.12. Keywords12.1 acceptance; air cured; ap
40、pearance; density; edge straightness; finish; flexural strength; glass mat cement sheet; inspection;interior wet area application; length and width tolerance; mechanical properties; minimum equilibrium strength; minimum wetstrength; moisture content; moisture movement; nominal length; nominal thickn
41、ess; nominal width; non-asbestos fiber-mat;packaging; physical properties; pressure cured; sampling; shipping; squareness tolerance; storage; supplementary requirements;supplementary tests; surface burning characteristics; thickness requirements; thickness tolerance; third party certification;tolera
42、nce; type tests; warm water resistance; workmanshipSUPPLEMENTARY REQUIREMENTSS1. Supplementary TestsS1.1 Supplementary tests for fiber-mat reinforced cementitious backer units shall consist of once only supplementary test, withthe manufacturers statement of results provided upon customers request. F
43、undamental changes in formulation or methods ofmanufacture, or both, shall require the subsequent retesting of the supplementary tests.S1.2 Supplementary tests shall be determined on uncoated product wherever practical. Where fiber-mat reinforced cementitiousbacker units are supplied coated, this ma
44、terial shall also be tested with the results identified as applying to coated material.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
45、 (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 moisture content of t
46、he fiber-mat reinforced cementitious backer units whenconditioned at 50 6 5 % relative humidity and a temperature of 73 6 4F (23 6 2C) in accordance with Test Method C1185.S1.3.2 Moisture MovementThe linear variation with change in moisture content shall be stated as the percentage change inlength b
47、ased on a relative humidity change from 30 % to 90 % in accordance with Test Method D1037. The linear variation withchange shall be less than or equal to 0.07 %. For the purpose of this test, obtain 5 samples of the particular cement substrate sheetto be tested from a commercial lot of not less than
48、 50 000 ft2.S1.3.3 Warm Water ResistanceThe specimens, when tested in accordance with Test Method C1185, shall not show visiblecracks or structural alteration such as to affect their performance in use. The average flexural strength of the specimens soaked inwarm water shall be not less than 70 % of
49、 the 750 psi flexural strength requirement from 6.3.1, that is, the average warm waterflexural strength shall be not less than 525 psi.S1.3.4 Surface Burning CharacteristicsWhen utilized as a finished substrate without decoration, fiber-mat reinforcedcementitious backer units shall have a reported flame spread index of 10 or less and a smoke developed index of not more than5 when tested in accordance with Test Method E84. Tests shall be conducted on samples that have been cured for 28 days in acontrolled atmosphere of 73 6 4F (23
