1、Designation: C1186 08 (Reapproved 2012)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 numbe
2、r 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 cladding
3、s, 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 interio
4、r 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
5、 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 con
6、sideredas 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 Specific
7、ation 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-A
8、sbestos 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 Materials2.2 British Standards:3BS 5669: Part 4 Specification fo
9、r Cement Bonded Particle-board2.3 International 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 div
10、ided 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
11、sun, rain, or snow.NOTE 1If 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 we
12、ll 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 i
13、s 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 Dec. 15, 2012. Published December 2012. Originallyapproved in 1991. Last previous edition approved in
14、 2008 as C1186 08. DOI:10.1520/C1186-08R12.2For 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 Am
15、erican 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 States15. Composition and Manufacture5.1 CompositionThis specification is applicable
16、 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 t
17、hat 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 Physical Requirements6.1
18、 Mechanical and physical properties shall be determinedon uncoated product wherever practical. Where products aresupplied coated, this material shall also be tested with theresults identified as applying to coated material.6.1.1 Sampling and inspection for mechanical and physicalproperties shall be
19、conducted in accordance with Test MethodC1185.6.2 Mechanical Requirements:6.2.1 Flexural StrengthWhen tested in accordance withTest Method C1185, the flexural strength shall not be less thanthe corresponding value for the appropriate grade in Table 1.Where manufacturers state minimum product strengt
20、h, thisshall be at the 4 % acceptable quality level (AQL) as are thevalues of Table 1.6.2.2 Type A sheets for exterior applications shall be testedand specified in both the wet and equilibrium conditions. TypeA sheets shall meet the minimum wet and minimum equilib-rium flexural strength requirements
21、 for the appropriate gradespecified in Table 1. In addition, the average wet flexuralstrength of the sample shall not be less than 50 % of the meanequilibrium strength of the sample.6.2.3 Type B sheets shall be specified and tested in theequilibrium condition only.NOTE 2When sampling from continuous
22、 production, these tests maybe conducted on dry, equilibrium, or saturated specimens, provided arelationship can be established between this testing and the specifiedvalues.6.3 Physical Requirements:6.3.1 DensityNominal values and tolerances for densityshall be stated by the manufacturer for each pr
23、oduct. Whentested in accordance with the method specified in Test MethodC1185, the value for density shall comply with the value statedby the manufacturer.7. Dimensions and Tolerances7.1 Method of MeasurementThe method of measurementshall be in accordance with Test Method C1185.7.2 Nominal Length an
24、d WidthFiber-cement sheets aretypically supplied in nominal lengths of 96 in. (2438 mm), 120in. (3048 mm) and nominal width of 48 in. (1219 mm). Greateror lesser nominal lengths and widths are not prohibited frombeing supplied.7.3 Nominal ThicknessFiber-cement sheets are normallyavailable in thickne
25、ss of18 in. (3.5 mm) to 1 in. (25 mm),although thickness outside of this range is not prohibited frombeing supplied. Refer to Table 2.7.4 Length and Width Tolerance The tolerance from thenominal shall be 60.5 % with a maximum variation of 614 in.(6 mm). A tolerance of 618 in. is acceptable for dimen
26、sionsless than 24 in. (609 mm).7.5 Thickness ToleranceThe maximum difference be-tween extreme values of the thickness measurement within asheet shall not exceed 15 % of the maximum measured value.Thickness variation from sheet to sheet shall not exceed thetolerances shown in Table 2.7.6 Squareness T
27、oleranceThe length of the diagonalsshall not vary by more than132 in./ft (2.6 mm/m) of the lengthof the sheet. Opposite sides of the sheet shall not vary in lengthby more than132 in./ft (2.6 mm/m).7.7 Edge Straightness Tolerance The sheet edges shall bestraight within132 in./ft (2.6 mm/m) of length
28、or width.8. Workmanship, Finish, and Appearance8.1 WorkmanshipSheets shall have a commercially uni-form surface on one side, and be free of major defects that willimpair appearance, erection, use, or serviceability.8.2 FinishThe surface of the sheet to be exposed shall besmooth, granular, or otherwi
29、se textured.8.3 ColorThe surface of the sheet shall be the naturalcolor of the product or colored by the addition of mineralpigments, chemical impregnation, pigmented coating, veneer,or embedded mineral granules.9. Inspection9.1 Inspection of material shall be made at the point ofshipment. The inspe
30、ctor representing the purchaser shall havefree access to the carriers being loaded for shipment to thepurchaser. The purchaser shall be afforded all reasonable andavailable facilities at the point of shipment for sampling andTABLE 1 Flexural Strength RequirementsNOTE 1The values of Table 1 are lower
31、 limit values based on anacceptable quality level (AQL) of 4 % at a 90 % confidence level.GradeWet Strength, psi (MPa)minEquilibrium Strength, psi (MPa)minI 580 (4) 580 (4)II 1015 (7) 1450 (10)III 1885 (13) 2320 (16)IV 2610 (18) 3190 (22)TABLE 2 Thickness RequirementsNominal Thickness, in.(mm)Tolera
32、nce, in.(mm)18 316 (3.55) 0.02 (0.5)316 38 (510) 0.04 (1.0)38 58 (1016) 0.05 (1.3)58 34 (1620) 0.06 (1.5)34 (20) 10 % thicknessC1186 08 (2012)2inspection of the material, which shall be conducted as not tointerfere unnecessarily with the loading of the carriers.9.2 Third party certification, either
33、continuous or at regularintervals, shall be recognized as an alternative to batch inspec-tion.10. Rejection10.1 If the sampling fails to conform to any one of therequirements of this specification, a second sample from thesame lot shall be prepared and tested. The results of the retestshall be combi
34、ned with the results of the original test, accord-ing to the sampling procedure, to determine compliance withthis specification.10.2 Failure to conform to any one of the requirements ofthis specification, upon retest as prescribed above, shall con-stitute grounds for rejection.11. Product Marking11.
35、1 IdentificationProduct marking shall include trade-mark or other means of identification that ensures that themanufacturer and product category can be identified. Themethod of marking shall be stated in the manufacturerscatalog.12. Packaging and Storage12.1 Commercial PackagingFlat sheets shall be
36、soshipped as to ensure acceptance by common carrier. There is nostandard package. The material is usually in bulk or cratedwhen so specified by the purchaser.12.2 StorageFlat sheets must be piled on sufficient firmsupports that will keep the sheets level and flat. The sheetsmust be piled with the ed
37、ges square and flush and covered toprovide protection from the weather until used.13. Keywords13.1 air cured; appearance; autoclaved cured; cellulosefiber; density; edge straightness; exterior application; finish;flexural strength; frost resistance; heat/rain resistance; inspec-tion; length and widt
38、h tolerance; mechanical properties; mini-mum equilibrium strength; minimum wet strength; moisturecontent; moisture movement; nominal length; nominal thick-ness; nominal width; non-asbestos fiber; packaging; physicalproperties; polyethylene fiber; polyvinyl alcohol fiber; pressurecured; rejection; sa
39、mpling; sheet grading; shipping; squarenesstolerance; storage; supplementary requirements; supplemen-tary tests; surface burning characteristics; thickness require-ments; thickness tolerance; third party certification; tolerance;Type A; Type B; type tests; warm water resistance; waterabsorption; wat
40、er tightness; workmanshipSUPPLEMENTARY REQUIREMENTSS1. Supplementary requirements for Type A and B sheetsshall consist of once only supplementary test, with the manu-facturers statement of results provided upon customers re-quest. Fundamental changes in formulation or methods ofmanufacture, or both,
41、 shall require the subsequent retesting ofthe supplementary tests.S1.1 The following supplementary tests shall be requiredfor Type A and B sheets:Supplementary Test Type A Type BMoisture Movement yes yesWater Absorption yes yesMoisture Content yes yesWater Tightness yes noSurface Burning Characteris
42、tics yes yesFrost Resistance yes noWarm Water Resistance yes noHeat/Rain Resistance yes noS1.2 Supplementary requirements shall be determined onuncoated product wherever practical. Where products aresupplied coated, this material shall also be tested with theresults identified as applying to coated
43、material.S2. Moisture MovementThe linear variation with changein moisture content shall be stated as the percentage change inlength based on a relative humidity change from 30 to 90 % inaccordance with Test Method C1185.S3. Water AbsorptionCalculate the amount of water ab-sorbed from the increase in
44、 weight of the dried specimenduring submersion for a period of 48 h. Express the waterabsorptions as the percentage by weight when tested inaccordance with Test Method C1185.S4. Moisture ContentState the percentage of moisturecontent of the fiber-cement sheet when conditioned at 50 65 % relative hum
45、idity and a temperature of 73 6 4F (23 62C) in accordance with Test Method C1185.S5. Water TightnessThe specimens, when tested in accor-dance with Test Method C1185, are not prohibited fromshowing traces of moisture on the underside of the sheet, but inno instance shall there be any formation of dro
46、ps of water.S6. Surface Burning CharacteristicsFiber cement sheetsof14 in. (6 mm) shall have a reported flame spread index of0 and a smoke developed index of not more than 5, when testedin accordance with Test Method E84. Sheets of thicknessgreater than14 in. (6 mm) shall meet this specification or
47、shallbe formed at14 in. (6 mm) thickness with the sameformulation for test purposes.S7. Frost Resistance (Freeze/Thaw)The specimens, whentested in accordance with Test Method C1185 (Section 12 onFreeze/ThawCladding Products), for 50 cycles, shall notshow visible cracks or structural alteration such
48、as to affecttheir performance in use. The ratio of retained strength ascalculated from the test results shall be at least 80 %.S8. Warm Water ResistanceThe specimens, when testedin accordance with Test Method C1185, shall not show visiblecracks or structural alteration, such as to affect their perfo
49、r-mance in use. The ratio of strengths as calculated from testresults shall be reported.C1186 08 (2012)3S9. Heat/Rain ResistanceThe specimens, when tested inaccordance with Test Method C1185 (Section 14 on Heat/RainWall Structures), for 25 cycles, shall not show visiblecracks or structural alteration of the sheets and frame assemblysuch as to affect their performance in use.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this sta
