1、Designation: C1325 17C1325 17aStandard 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 C1396/C13
6、96M); water-resistant gypsum backing board (Specification C1396/C1396M);glass mat gypsum backing board (Specification C1178/C1178M); particle boards (Definitions D1554); and discrete non-asbestosfiber cement interior substrate sheets (Specification C1288).1.3 UnitsThe values stated in inch-pound uni
7、ts 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.1.4 This international standard was developed in accordance with internationally recognized principles on standardizatione
8、stablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C220 Specification for Flat Asbestos-Cement SheetsC473 Test
9、 Methods for Physical Testing of Gypsum Panel ProductsC666/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 Loading)C1154 Terminology for Non-Asbestos
10、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 for Flat Fiber-Cement SheetsC1288 Specif
11、ication 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 Direct-Applied Exterior Finish SystemsC1
12、535 Practice for Application of Exterior Insulation and Finish Systems Class PID1037 Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel Materials1 This specification is under the jurisdiction of ASTM Committee C17 on Fiber-Reinforced Cement Productsand is the direct respons
13、ibility of Subcommittee C17.01 onNon-Asbestos Fiber-Mat Reinforced Products.Current edition approved Jan. 1, 2017June 1, 2017. Published January 2017July 2017. Originally approved in 1996. Last previous edition approved in 20142017 asC1325 - 14.C1325 - 17. DOI: 10.1520/C1325-17.10.1520/C1325-17A.2 F
14、or referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to pr
15、ovide 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 users consult prior editions as appropriate. In all cases only the current versionof th
16、e 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 Conshohocken, PA 19428-2959. United States1D1554 Terminology Relating to Wood-Base Fiber a
17、nd Particle Panel MaterialsD2394 Test Methods 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 Resi
18、stance of Plastics to Bacteria (Withdrawn 2002)32.2 ANSI Standards:4A118.1 American National Standard Specification for Dry-Set Portland Cement MortarA118.4 American National Standard Specification for Latex-Portland Modified Dry-Set Cement MortarA136.1 Standard for Organic Adhesives for Installatio
19、n of Ceramic Tile3. Terminology3.1 DefinitionsRefer to Terminology C1154.4. Classification4.1 Flat sheets covered 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 mate
20、rials, 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 exterior applications such as soffit areas, or for interior dry or wet areaapplications as a desired unfinished
21、substrate or an unfinished substrate for decoration such as natural stone or tile, where substratedimensional stability 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
22、cementitious backer units consistingessentially of an inorganic hydraulic binder or a calcium silicate binder formed 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, f
23、illers, pigments, and other fibers that are compatible with the fiber-mat cement may be added.5.2 ManufactureThese 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 P
24、hysical Properties6.1 Mechanical and physical properties shall be determined on an uncoated product wherever practical. Where the products aresupplied coated, this material shall also be tested with the results identified as applying to coated material.6.2 SamplingObtain five samples of the particul
25、ar 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 strength shall be not less than 750 psi(5170 kPa).6.
26、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 dry, equilibrium, or saturated specimens, provided a
27、 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 the test method specified in Test Methods C1185, th
28、e 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, the value for modulus of elasticity shall comply
29、 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)3 The last approved version of this historical standard is referenced on www.astm.org.4 Available from American National Standards Institu
30、te (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.C1325 17a2where:E = modulus of elasticity, psi (MPa),P2and P1 = loads, lb (N), taken from two points within the linear section of the plot,y2and y1 = deflections, in. (mm) corresponding to the loads selected,b = width of sp
31、ecimen, in. (mm),d = thickness of specimen, in. (mm), andL = span, in. (mm).7. Dimensions and Tolerances7.1 Method of MeasurementThe method of measurement for 7.1.1 7.1.5 shall be in accordance with Test Methods C473.7.1.1 Nominal Length and WidthFiber-mat reinforced cementitious backer units are ty
32、pically supplied in nominal lengths of48 in. (1219 mm) to 96 in. (2438 mm) and nominal widths of 32 in. (810 mm) to 48 in. (1219 mm). Lengths and widths otherthan stated above are not prohibited from being supplied.7.1.2 Nominal ThicknessFiber-mat reinforced cementitious backer units are typically s
33、upplied in nominal thicknesses of 14in. (6 mm) to 58 in. (16 mm). Thicknesses other than stated above are not prohibited from being supplied.7.1.3 Length and Width ToleranceThe tolerance from the nominal value shall be 618 in. (3 mm).7.1.4 Thickness ToleranceThe maximum difference between extreme va
34、lues 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).7.1.5 Squareness ToleranceThe length of the diagonals shall not vary by more than 132 in./ft (2.6 mm/m) of the length of thesheets. Opposite
35、sides of the sheet shall not vary in length by more than 132 in./ft (2.6 mm/m).7.2 Edge Straightness ToleranceThe sheet edges shall be straight within 132 in./ft (2.6 mm/m) of length or width when testedin accordance with Test Methods C1185.8. Workmanship8.1 WorkmanshipSheets shall be free of defect
36、s 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 the carriers being loaded for shipment to the purchaser. The purchaser s
37、hall 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 party certification, either continuous or at regular intervals, shall
38、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 include trademark, type of product (A or B), or other means of identifi
39、cation thatensures that the manufacturer and product type can be identified. The method of marking shall be stated in the manufacturerscatalog.11. Packaging and Storage11.1 Commercial PackagingFlat sheets shall be packaged so as to prevent damage during shipment.11.2 StorageFlat sheets shall be stac
40、ked 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; appearance; density; edge straightness; finish; flexural strength; glass mat ceme
41、nt sheet; inspection;interior wet area application; length and width tolerance; mechanical properties; minimum equilibrium strength; minimum wetstrength; moisture content; moisture movement; nominal length; nominal thickness; nominal width; non-asbestos fiber-mat;packaging; physical properties; pres
42、sure cured; sampling; shipping; squareness tolerance; storage; supplementary requirements;supplementary tests; surface burning characteristics; thickness requirements; thickness tolerance; third party certification;tolerance; type tests; warm water resistance; workmanshipC1325 17a3SUPPLEMENTARY REQU
43、IREMENTSS1. 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. Fundamental changes in formulation or methods ofmanufacture, or both,
44、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 material shall also be tested with the results identified as applying t
45、o 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 (Latex-Portland Cement Mortar)Shear Bond Strength (Organic Adhesive
46、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 the fiber-mat reinforced cementitious backer units whenconditioned at
47、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 based on a relative humidity change from 30 % to 90 % in accordance wi
48、th 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 50 000 ft2.S1.3.3 Warm Water ResistanceThe specimens, when tested in
49、 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 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 sprea
