1、Designation: C 1705/C 1705M 09Standard Specification forStructural Cementitious Panels1This standard is issued under the fixed designation C 1705/C 1705M; the number immediately following the designation indicates theyear of original adoption or, in the case of revision, the year of last revision. A
2、 number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers structural cementitious panels.Structural cementitious panels are non-combustible, waterdurable, fiber reinf
3、orced inorganic composite panels intendedfor use as structural panels. Structural cementitious panels canbe used as floor, roof and wall sheathing when fastened tosupports spaced in accordance with the appropriate span rating.1.2 This specification defines minimum performance re-quirements for struc
4、tural cementitious sheathing panels withrespect to structural performance, dimensional stability perfor-mance, dimensional tolerance, noncombustibility, surfaceburning characteristics, long-term durability, water durability,mold resistance, density, moment capacity and bending stiff-ness.1.3 This sp
5、ecification also defines a policy to assure on-going product quality by detecting changes in panel propertiesthat may adversely affect panel performance. Required auditsof quality activities by a third party quality assurance agencyare also defined.1.4 The values stated in either inch-pound units or
6、 SI unitsare to be regarded separately as standard. Within the text, theSI units are shown in brackets. The values stated in eachsystem may not be exact equivalents; therefore, each systemshall be used independently of the other. Combining valuesfrom the two systems may result in non-conformance wit
7、h thestandard.1.5 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2
8、. Referenced Documents2.1 ASTM Standards:2C 1185 Test Methods for Sampling and Testing Non-Asbestos Fiber-Cement Flat Sheet, Roofing and SidingShingles, and ClapboardsC 1704/C 1704M Test Methods for Sampling and TestingStructural Cementitious PanelsD 1037 Test Methods for Evaluating Properties of Wo
9、od-Base Fiber and Particle Panel MaterialsD 1761 Test Methods for Mechanical Fasteners in WoodD 3273 Test Method for Resistance to Growth of Mold onthe Surface of Interior Coatings in an EnvironmentalChamberE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE 136 Test Method for
10、 Behavior of Materials in a VerticalTube Furnace at 750CE 330 Test Method for Structural Performance of ExteriorWindows, Doors, Skylights and Curtain Walls by UniformStatic Air Pressure DifferenceE 661 Test Method for Performance of Wood and Wood-Based Floor and Roof Sheathing Under ConcentratedStat
11、ic and Impact LoadsG21 Practice for Determining Resistance of SyntheticPolymeric Materials to Fungi3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 cross machine direction (XMD), nthe direction per-pendicular to the machine direction.3.1.2 edge, nedges of a panel refer to the l
12、ong side of arectangular panel. For example, ona4by8ftpanel, the edgesrefer to the sides of the panel that are 8 ft long.3.1.3 end, nthe end of a panel refers to the short side of arectangular panel. For example, ona4by8ftpanel, the endrefers to the side of the panel that is 4 ft long.3.1.4 fiber re
13、inforced inorganic composite, na compositematerial composed primarily of inorganic matrix materialsreinforced primarily with inorganic fibers. Inorganic aggre-gates may be combined with the inorganic matrix.3.1.5 machine direction (MD), nthe direction the boardtravels during manufacture.1This specif
14、ication is under the jurisdiction ofASTM Committee C27 on PrecastConcrete Products and is the direct responsibility of Subcommittee C27.40 on GlassFiber Reinforced Concrete.Current edition approved Feb. 15, 2009. Published March 2009.2For referenced ASTM standards, visit the ASTM website, www.astm.o
15、rg, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.1.6 noncom
16、bustibility, nterm intended to describe prod-ucts that do not ignite and/or burn when subjected to fire. Testmethods are generally specified by reputable agencies such asASTM, Factory Mutual, Underwriters Lab Inc., etc.3.1.7 performance standard, na standard for productsbased on performance. Perform
17、ance is measured by tests thatapproximate end-use conditions.3.1.8 plant specification, nthe plant specification isunique to each qualified product under a given performancestandard. The specification is used in the plant quality programas audited under the approved quality control program.3.1.9 qua
18、lification policy, npolicy that describes the pro-cedures by which a plant may obtain span rating privileges forperformance-rated products policy.3.1.10 quality assurance policy, npolicy covering thethird-party auditing of plants quality control program.3.1.11 reference value, nthe numerical value e
19、stablishedfor the plant specification for a given mechanical or physicalproperty.3.1.12 sample average, nthe average test value, obtainedby summing the observations and dividing by the number oftests.3.1.13 sample panel, na structural cementitious panelfrom which test specimens are cut and condition
20、ed as neces-sary.3.1.14 sample standard deviation, na measure of testvariation. Calculated as:S 5=(x2(x!2/n#/ n 1 (1)where:S = sample standard deviation,x = test observation, andn = number of observations.3.1.15 span rating, nthe recommended maximum center-to-center support spacing in inches for the
21、 specified end useunder normal use conditions.3.1.16 specimen, nthe individual test piece cut from asample panel.3.1.17 structural cementitious panel, nnon-combustible,water durable, fiber-reinforced inorganic composite panelsintended for use as structural panels.3.1.18 test exposure condition, nthe
22、 condition to which apanel is subjected prior to test. Generally, such conditions arereferred to as the dry or wet conditions.3.1.19 test specimen, nspecimens cut from a sample panelthat are used for testing.3.1.20 water durability, nperformance of a product aftersustained immersion in water for a s
23、pecified period of time.4. Performance Specifications for StructuralCementitious Panels4.1 Structural cementitious panels are fiber-reinforced inor-ganic composite panels intended for use as structural panels.When used as a floor sheathing panel, structural cementitiouspanels can be used as a combin
24、ation subfloor and underlayment(single floor grade) or as a sheathing grade panel, which whenused as a floor requires an underlayment panel on top of it. Ineither case, panels must be fastened to supports spaced inaccordance with the panels span rating. Sections 5 through 13describe qualification pr
25、ocedures and initial testing required todemonstrate that the panels performance characteristics meetthe requirements of this standard.5. Structural Performance5.1 Concentrated LoadsPanels shall be tested accordingto the procedures of Test Method E 661 for concentrated staticand impact loads. Panels
26、shall conform to the criteria of Tables1 and 2 for the end use and span shown on the panel.5.2 Uniform LoadsPanels shall be tested according to theprocedures of Test Method E 330 for uniform loads. Uniformloads shall be applied in both the positive and negativedirections. Panels shall conform to the
27、 performance values ofTable 3 for the end use and span shown on the panel.5.3 Fastener HoldingFor lateral fastener loads, panelsshall be tested according to the procedures of Test MethodsD 1761, using the sections applicable to lateral fastener loadtesting. For withdrawal loads, panels shall be test
28、ed accordingto Test Methods D 1037, using the sections applicable towithdrawal load testing. Panels shall conform to the criteria ofTable 4 for the end use and thickness shown on the panel.6. Stability Performance6.1 Linear ExpansionPanels shall be tested according toTest Methods C 1185, using the s
29、ection applicable to linearexpansion. Linear expansion of the structural panel shall notexceed 0.1 %, in either the machine or cross machine direction.Testing shall be initiated 28 days after panel production.TABLE 1 Sheathing Grade SheetsConcentrated Static and Impact Test Performance Criteria for
30、Panels Tested According toTest Method E 661Span Rating,in.Test ExposureConditionsAPerformance RequirementsMinimum Ultimate Load, lb kNMaximumDeflection, in. mmUnder 200-lb Load 0.89 kNStatic Following Impact16 406 mm DryWet400 lb 1.78 kN400 lb 1.78 kN400 lbB1.78 kN400 lbB1.78 kN0.125 in.C3.18 mm0.12
31、5 in.C3.18 mm20 508 mm DryWet400 lb 1.78 kN400 lb 1.78 kN400 lbB1.78 kN400 lbB1.78 kN0.125 in.C3.18 mm0.125 in.C3.18 mm24 610 mm DryWet400 lb 1.78 kN400 lb 1.78 kN400 lbB1.78 kN400 lbB1.78 kN0.125 in.C3.18 mm0.125 in.C3.18 mmAWet conditioning is exposure to seven days continuous wetting and tested w
32、et.BImpact shall be 75 ft-lb 102 J for span ratings up to 24 in. o.c 610 mm o.c.CCriteria apply under both static concentrated load and following impact.C 1705/C 1705M 0926.2 Thickness SwellPanels shall be tested according toTest Methods D 1037, Method B. Thickness swell of the floorsheathing panel
33、shall not exceed 3 %. Testing shall be initiated28 days after panel production.6.3 Water AbsorptionPanels shall be tested according toTest Method C 1704/C 1704M, using the section applicable towater absorption. Water absorption of the floor sheathing panelshall not exceed 15 % when tested at the age
34、 of 28 days.6.4 Panel Freeze/ThawPanels shall be tested in accor-dance with Test Methods C 1185, using the section applicableto panel freeze/thaw. Panels shall retain a minimum of 75 % ofthe control strength values after 50 cycles, in either themachine or cross machine direction. Testing shall be in
35、itiated at28 days after panel production.7. Dimensional Tolerance and Squareness of Panels7.1 Length and WidthA tolerance of 618 in. 63.2 mmshall be allowed on specified length and/or width.7.2 ThicknessA tolerance of 6132 in. 60.8 mm forspecified thicknesses.7.3 Squareness and StraightnessPanels sh
36、all be squarewithin164 in. 0.4 mm per lineal foot of panel length, asmeasured along the diagonals. All panels shall be manufac-tured so that a straight line drawn from one corner to theadjacent corner is within116 in. 1.6 mm of the panel edge.8. Noncombustibility8.1 Panels shall be tested according
37、to Test Method E 136 atan age of 28 days. Panel specimens shall be demonstrated to benon-combustible per the requirements of Test Method E 136.9. Surface Burning Characteristics9.1 Panels shall be tested according to Test Method E84forsurface burning characteristics at an age of 28 days. Testspecime
38、ns shall achieve a 0 flame spread and a maximumsmoke developed of 5.10. Long-Term Durability10.1 Panels shall be tested per Test Methods C 1185, usingthe section applicable to long-term durability, with condition-ing initiated at an age of 28 days after production. A minimumretention of 75 % of maxi
39、mum load and maximum deflectionvalues shall be achieved for the wet conditioned specimenscompared to the control samples. Testing shall be conducted inboth the machine and the cross machine directions.11. Water Durability11.1 Panels shall be tested per Test Methods C 1185, usingthe section applicabl
40、e to water durability, at an age of 28 daysin an as-is and wet condition. Wet specimens shall retain aminimum of 70 % of the maximum load and maximumTABLE 2 Single Floor Grade SheetsConcentrated Static and Impact Test Performance Criteria for Panels Tested According toTest Method E 661Span Rating,in
41、.Test ExposureConditionsAPerformance RequirementsMinimum Ultimate Load, lb kNMaximumDeflection, in. mmUnder 200-lb Load 0.89 kNStatic Following Impact16 406 mm DryWet550 lb 2.45 kN550 lb 2.45 kN400 lbB1.78 kN400 lbB1.78 kN0.078 in.C1.98 mm0.078 in.C1.98 mm20 508 mm DryWet550 lb 2.45 kN550 lb 2.45 kN
42、400 lbB1.78 kN400 lbB1.78 kN0.094 in.C2.39 mm0.094 in.C2.39 mm24 610 mm DryWet550 lb 2.45 kN550 lb 2.45 kN400 lbB1.78 kN400 lbB1.78 kN0.108 in.C2.74 mm0.108 in.C2.74 mmAWet conditioning is exposure to seven days continuous wetting and tested wet.BImpact shall be 75 ft-lb 102 J for span ratings up to
43、 24 in. o.c. 610 mm o.c.CCriteria apply under both static concentrated load and following impact.TABLE 3 Uniform Load Performance Criteria for Panels Tested per Test Method E 330Span Rating,in.TestExposureConditionsAAverage DeflectionUnder LoadB,CMinimum UltimateUniform Load,psf kPa16 406 mm Dry or
44、Wet 0.044 in. 1.12 mm 100 psf 4.79 kPa 330 psf 15.8 kPa20 508 mm Dry or Wet 0.053 in. 1.35 mm 100 psf 4.79 kPa 330 psf 15.8 kPa24 610 mm Dry or Wet 0.067 in. 1.70 mm 100 psf 4.79 kPa 330 psf 15.8 kPaAWet conditioning is exposure to seven days continuous wetting and tested wet.BDeflection of sheathin
45、g relative to framing.CSpecimen tested in 2 span condition.TABLE 4 Fastener Performance Criteria Under Lateral and Withdrawal Loads for Structural Cementitious Panels Tested perTest Methods D 1761 (Lateral Loads) and Test Methods D 1037 (Withdrawal Loads)End UsePanelThickness,in.Screw SizeTestExposu
46、reConditionPerformance Requirements forMinimum Ultimate Load,lb NLateral WithdrawalStructuralCementitious PanelsSingle Floor orSheathing GradeGreater than12 12.7 mm#8,1-58 in. 41.3 mmDryWet210 lb 0.93 kN160 lb 0.71 kN20 lb 89 N15 lb 67 NC 1705/C 1705M 093deflection compared to the as-is samples. Tes
47、ting shall beconducted in both the machine and the cross machine direc-tions.12. Mold Resistance12.1 Panels shall be tested for mold resistance per TestMethod D 3273 and Practice G21. Test specimens shall havea mold resistance value of 10 when tested per Test MethodD 3273 and a mold resistance value
48、 of 1 or less when tested perPractice G21. In both cases, testing shall be initiated at 28 daysafter production of the panels.13. Density13.1 Panels shall be tested for density in accordance withTest Method C 1704/C 1704M, using the section applicable todensity. Testing shall be initiated at 28 days
49、 after production ofthe panels. Density shall be 70 pcf 1124 kg/m3 minimum.14. Sampling and Inspection14.1 Panel samples shall be selected in sufficient quantity toenable statistical analysis. Test specimens prepared from panelsamples shall be sufficient in number to enable statisticalanalysis.15. Quality Assurance15.1 General:15.1.1 The purpose of this section is to assure pro
