ASTM_C_1186_-_08_2016.pdf

Designation:C118608(Reapproved 2016)Standard Specification forFlat Fiber-Cement Sheets1This standard is issued under the fixed designation C1186;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year 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.Scope1.1 This specification covers either untextured or surfacetextured fiber-cement flat sheets intended for exterior applica-tions such as claddings,facades,curtain walls,soffits,and soforth.1.2 This specification is not applicable to asbestos-cementflat sheets(Specification C220),gypsum-based boards(Speci-fications C1396/C1396M,C1177/C1177M,C1178/C1178M),or particle boards(Terminology D1554)discrete non-asbestosfiber-cement interior substrate sheets(Specification C1288),fiber-mat reinforced non-asbestos cement interior substratesheets(Specification C1325),or cement-bonded particleboards(Specification BS 5669:Part 4)and(ISO 8335).1.3 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 The text of this standard references notes and footnoteswhich provide explanatory material.These notes and footnotes(excluding those in tables and figures)shall not be consideredas requirements of the standard.2.Referenced Documents2.1 ASTM Standards:2C220 Specification for Flat Asbestos-Cement SheetsC1154 Terminology for Non-Asbestos Fiber-Reinforced Ce-ment ProductsC1177/C1177M Specification for Glass Mat Gypsum Sub-strate for Use as SheathingC1178/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 SidingShingles,and ClapboardsC1288 Specification for Discrete Non-Asbestos Fiber-Cement Interior Substrate SheetsC1325 Specification for Non-Asbestos Fiber-Mat Rein-forced Cementitious Backer UnitsC1396/C1396M Specification for Gypsum BoardD1554 Terminology Relating to Wood-Base Fiber and Par-ticle Panel MaterialsE84 Test Method for Surface Burning Characteristics ofBuilding Materials2.2British Standards:3BS 5669:Part 4 Specification for Cement Bonded Particle-board2.3International Standards:3ISO 8335 Cement-bonded ParticleboardsBoards of Port-land or Equivalent Cement Reinforced with Fibrous WoodParticles3.Terminology3.1 DefinitionsRefer to Terminology C1154.4.Classification4.1 Flat sheets covered by this specification are divided intotwo types,according to their intended application.4.2 Type ASheets are intended for exterior applications,subjected to the direct action of sun,rain,or snow.They aresupplied coated or uncoated.4.3 Type BSheets are intended for exterior applications,not subjected to the direct action of sun,rain,or snow.NOTE1If sheets of Type B are used in an exterior application,wherethey are directly exposed to the weather,but are protected by impregnationor coatings,the weather resistance of the product may be altered by thequality of the protection.Specification of this protection,as well as themethod for control and test,are outside the scope of this specification.4.4 The sheets are further classified into four grades accord-ing to their flexural strengths.The manufacturer shall declarethe type and grade of a given product in the literature for thatproduct.1This specification is under the jurisdiction of ASTM Committee C17 onFiber-Reinforced Cement Productsand is the direct responsibility of SubcommitteeC17.02 on Non-Asbestos Fiber Cement Products.Current edition approved Nov.1,2016.Published November 2016.Originallyapproved in 1991.Last previous edition approved in 2012 as C1186-08(2012).DOI:10.1520/C1186-08R16.2For 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 page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Composition and Manufacture5.1 CompositionThis specification is applicable to fibercement flat sheets consisting essentially of an inorganic hy-draulic binder or a calcium silicate binder formed by thechemical reaction of a siliceous material and a calcareousmaterial reinforced by organic fibers,inorganic non-asbestosfibers,or both.Process aids,fillers,and pigments that arecompatible with fiber cement are not prohibited from beingadded.5.2 ManufactureThese products are formed either with orwithout pressure and cured,either under natural or acceleratedconditions,to meet the physical requirements of this specifi-cation.6.Mechanical and Ph