1、Designation:C55107 Designation: C551/C551M 07 (Reapproved 2011)1Standard Specification forAsbestos-Cement Fiberboard Insulating Panels1This standard is issued under the fixed designation C551/C551M; the number immediately following the designation indicates the yearof original adoption or, in the ca
2、se of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1NOTEUnits informatio
3、n was editorially corrected in January 2012.1. Scope1.1 This specification covers asbestos-cement insulating panels consisting of a core of insulating fiber board sandwichedbetween, and bonded to, two sheets of asbestos-cement facing board. Asbestos-cement insulating panels are designed for exterior
4、and interior walls, partitions, curtain walls, roof decks, and for decorative purposes.1.2 All measurements and tests necessary for determining the conformity of asbestos-cement insulating panels with thisspecification are made in accordance with the methods covered in Section 9.1.3The values stated
5、 in SI units are to be regarded as the standard. The values stated in parentheses are provided for informationonly.1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in eachsystem may not be exact equivalents; therefore, each sys
6、tem shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the standard.1.4 WarningBreathing of asbestos dust is hazardous. Asbestos and asbestos products present demonstrated health risks forusers and for those with whom they come into cont
7、act. In addition to other precautions, when working with asbestos-cementproducts, minimize the dust that results. For information on the safe use of chrysoltile asbestos, refer to “Safe Use of ChrysotileAsbestos: A Manual on Preventive and Control Measures.”21.5 The following safety hazards caveat p
8、ertains only to the test method portion, Section 9, of this specification. This standarddoes not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practices and determine the
9、 applicability of regulatory limitations prior to use.See 1.4 for a specific hazard warning.2. Referenced Documents2.1 ASTM Standards:3C150 Specification for Portland CementC208 Specification for Cellulosic Fiber Insulating BoardC220 Specification for Flat Asbestos-Cement SheetsC236 Test Method for
10、Steady-State Thermal Performance of Building Assemblies by Means of a Guarded Hot BoxC458 Test Method for Organic Fiber Content of Asbestos-Cement ProductsC518 Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter ApparatusC595 Specification for Blended Hydraul
11、ic CementsC618 Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in ConcreteD2946 Terminology for Asbestos and AsbestosCement ProductsE96/E96M Test Methods for Water Vapor Transmission of Materials2.2 Federal Standard:1This specification is under the jurisdiction of ASTM Co
12、mmittee C17 on Fiber-Reinforced Cement Products and is the direct responsibility of Subcommittee C17.03 onAsbestos - Cement Sheet Products and Accessories.Current edition approved Nov. 1, 2007. Published December 2007. Originally approved in 1964. Last previous edition approved in 2003 as C55198 (20
13、03)1. DOI:10.1520/C0551-07.Current edition approved Nov. 1, 2011. Published January 2012. Originally approved in 1964. Last previous edition approved in 2007 as C551 07. DOI:10.1520/C0551_C0551M-07R11E01.2Available from The Asbestos Institute, http:/ referencedASTM standards, visit theASTM website,
14、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.1This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of
15、 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 the standard as published by ASTM is to be considered
16、 the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Fed. Std. No. 123 Marking for Shipment (Civil Agencies)42.3 Military Standard:MIL-STD-129 Marking for Shipment and Storage42.4 Other Standards:Uniform Freight Clas
17、sification Rules5National Motor Freight Classification Rules63. Terminology3.1 Definitions:3.1.1 dimensionsfor the purpose of this specification, include the length, width, thickness, and squareness (defined hereunder)of asbestos-cement insulating panels as measured under specified conditions.3.1.2
18、flexural strengththe average breaking load in newtons per meter of width (oror lbf/ft of width)width of driedspecimens loaded as simple beams on a 762 mm (30 in.)30 in. span with the load applied equally and simultaneously at bothone-third points of the span.NOTE 1The flexural performance is defined
19、 as the moment capacity in Nm/m (or ftlbf/ft)or ftlbf/ft of width, obtained from the product of flexuralstrength and span divided by 6.3.1.3 lotshipment, or part thereof, of a quantity of product of identical type produced during a single production run.3.1.4 squarenessdeviation from squareness is d
20、efined as the percent difference in the length of the two diagonals of a panel.Panels with perfect squareness have zero difference between the length of their diagonals.3.1.5 Additional terminology is presented in Terminology D2946.4. Materials and Manufacture4.1 Asbestos-cement insulating panels sh
21、all be composed of an insulating core sandwiched between, and bonded to, two facingsheets of asbestos-cement.The insulating core shall be manufactured from wood, fiber, or other suitable vegetable fiber, by a feltingor molding process, with suitable sizing material incorporated into the product to r
22、ender it water resistant. The material shall besubjected to such drying temperatures as to effect complete destruction of rot producing fungi. The asbestos-cement facing boardsshall be composed of a combination of asbestos fiber and portland cement prescribed in Specification C150, or portland slag
23、orpozzolan cements meeting Specification C595, with or without the addition of curing agents or additives meeting SpecificationC618, water-repellent substances, mineral fillers, coatings, pigments, or mineral granules, formed under pressure and cured to meetthe physical requirements of this specific
24、ation. Sheets may contain not more than mass percent of non-deleterious organiccomponents as determined by Test Method C458. The bonding adhesive shall cover essentially 100 % of the bonding surfaces.5. Dimensions, Mass, and Permissible Variations5.1 Physical Requirements:5.1.1 Asbestos-cement facin
25、g sheets shall conform to the requirements for Type F or U of Specification C220.5.1.2 The insulating core board shall conform to the requirements for Class C or E of Specification C208.5.1.3 Flexural StrengthThe average breaking load, obtained by loading equally and simultaneously at both one-third
26、 pointsof the span, for panel specimens dried for 24 h at 70 6 3C (160160 6 5F)5F shall not be less than shown in Table 1.5.1.4 Vapor PermeabilityThe average vapor permeability of any panel board thickness shall not exceed 0.35g/MPa.s.m2(81 81 perms, or grains of water vapor per square foot per hour
27、 per inch of water vapor pressure differential) whentested according to the wet cup method of Test Methods E96/E96M.4Available from Standardization Documents, Order Desk, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5094.5Available from the Uniform Classification Commission, Room 110
28、6, 222 S. Riverside Plaza, Chicago, IL 60606.6Available from National Motor Freight Inc., 1616 “P” St. NW, Washington, DC 20036.TABLE 1 Flexural Strength Requirements for PanelsNominal Thickness Minimum Breaking Loadmm (in.) N (lbf)17 (1116) 1300 30017 1116 1300 30029 (118) 2700 60029 118 2700 60040
29、 (1916) 4000 90040 1916 4000 90051 (2) 5300 120051 2 5300 1200C551/C551M 07 (2011)125.1.5 Thermal Resistance, RThe average thermal resistance, R, Km2/W (deg Fhft/W deg Fhft2/Btu)/Btu of the panel shallnot be less than the requirements in Table 2 when tested in accordance with Test Method C236 or Tes
30、t Method C518.5.1.6 Adhesive Line BondThe glue shall be suitable for outdoor use and have such adhesion that specimens resist the shearstress generated during flexural testing with all failures occurring within the core board and not at any of the glue lines.5.2 Dimensions:5.2.1 This specification i
31、s applicable only for panels of the dimensions shown in Table 3 and Table 4.5.2.2 Permissible Variation in Dimensions:5.2.2.1 ThicknessThe average thickness of all panels supplied under this specification shall be as prescribed in Table 4. Theaverage thickness of any one sheet shall not differ from
32、the average of all sheets by more than 10 percent.5.2.2.2 Width and LengthThe permissible variation from the nominal width shall be 3 mm (0.12 in.)0.12 in. and +1.5 mm(0.06 in.)0.06 in. and, from the nominal length, 3 mm (0.12 in.)0.12 in. and +1.5 mm (0.06 in.)0.06 in. as measured after48hat256 5C
33、(7070 6 10F)10F and 50 % relative humidity.5.2.2.3 SquarenessThe deviation from squareness shall not exceed 0.2 % of width or length.6. Supplementary and Finishing Pieces, Accessories6.1 Fasteners of suitable size and type for securing asbestos-cement insulating board to metal or wood supporting mem
34、bers ofall sizes and types shall be furnished when specified. The fasteners shall be corrosion-resistant and complete information regardingthe supporting structure must be supplied by the purchaser.7. Workmanship, Finish, and Appearance7.1 WorkmanshipThe surfaces on both sides of the panel shall be
35、free of major defects that will impair appearance, erection,use, or serviceability.7.2 FinishThe surfaces of the panel shall be smooth, grained, granuled-coated, or otherwise textured.7.3 ColorBoth surfaces of the panel will be the natural color of the asbestos-cement products or may be colored by t
36、headdition of mineral pigments, chemical impregnation, pigmented coatings, veneers, or embedded mineral granules.7.4 EfflorescenceEfflorescence that sometimes may appear on asbestos-cement insulating panels is not a defect and should notresult in a permanent change in color.8. Rejection and Retestin
37、g8.1 If one of the samples fails to conform to any one of the requirements of this specification, a second sample from the samelot shall be prepared and tested. The results of the retest shall be averaged with the results of the original test to determinecompliance with this specification.8.2 Failur
38、e to conform to any one of the requirements of this specification, upon retest as prescribed above, shall constitutegrounds for rejection. In case of rejection, the seller shall have the right to reinspect the rejected shipment and resubmit the lot afterremoval of the portion of the shipment not con
39、forming to the specified requirements, provided this is done within 20 days afterreceipt of written notice of the specific cause for rejection.9. Test Methods9.1 Sampling:9.1.1 Select at random a number of panels from each shipment or lot, representing a product of the same kind. Table 5 showsthe nu
40、mber of panels to be selected from shipments of various quantities.9.1.2 Additional panels may be taken at the discretion of the inspector.9.2 Flexural Strength:9.2.1 DefinitionFlexural strength, for the purpose of this specification, is the average breaking load, in newtons (orpounds-force)or pound
41、s-force of test specimens dried as specified, loaded as simple beams with the load applied equally andsimultaneously to both one-third points of the span, and tested by the method prescribed in 12.3.9.2.2 SignificanceThis is a routine test method to indicate the strength of the product.TABLE 2 Therm
42、al Resistance, RNominal Thickness R Value at 24C ( 70F)mm (in.) K.m2/W (F.h.ft2/Btu)17 (1116) 0.23 (1.3)17 1116 0.23 1.329 (118) 0.44 (2.5)29 118 0.44 2.540 (1916) 0.59 (3.3)40 1916 0.59 3.351 (2) 0.71 (4.0)51 2 0.71 4.0C551/C551M 07 (2011)139.2.3 ProcedureCut two specimens 70 3 30 cm (30312 in.)30
43、3 12 in. from each panel to be tested, with the longdimension of the samples parallel to the long dimension of the panel. Dry each specimen for 24 h in a ventilated oven at atemperature of 70 6 3C (160160 6 5F),5F, then cool to room temperature. Determine the flexural strength of each specimenby pla
44、cing the specimen on supports that cannot exert longitudinal constraint (rocker-type bearing edges or rollers with a 3-mm(18-in.)-in. minimum and a 13-mm (12-in.)-in. maximum radius) and applying the load equally and simultaneously to bothone-third points of the span through similar edges bearing ag
45、ainst either surface of the specimen. The test span shall be 609.6 61.6 mm (2424 6116 in.)in. and the load lines and supports shall be parallel. Increase the load applied at a uniform rate to producea failure of the specimen in 1 to 2 min. The possible error in the load reading shall not exceed 1 %
46、of the load. Report the flexuralstrength as the average load, newtons (oror pounds force),force, for all the specimens tested.9.2.3.1 Warningsee 1.4.9.3 Vapor Permeability:9.3.1 SignificanceThe purpose of this test method is to obtain, by means of simple apparatus, reliable values in uniform unitsof
47、 measurement for the rate of water vapor transmission of insulating and related materials. These values are for use in design,manufacture, and marketing. Correlation of test values with any given use must be determined by experience.9.3.2 ProcedureTest asbestos-cement insulating panels in accordance
48、 with Test Methods E96/E96M.9.4 Thermal Resistance, R:9.4.1 SignificanceThe thermal resistance, R, of a panel is a measure of the time rate heat flow through a unit area of the panelin a direction perpendicular to the face of the panel, per unit thickness of the panel, per unit temperature gradient
49、across the panel.9.4.2 ProcedureTest asbestos-cement insulating panels in accordance with Test Method C236. Thermal resistance iscalculated as the reciprocal of thermal conductance.9.5 Dimensional Measurements:9.5.1 Significance of Dimensional Measurements:9.5.1.1 SignificanceThese are routine measurements for the purpose of determining whether the length, width, thickness, andsquareness of the indi
