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    ASTM C1381 C1381M-1997(2018) Standard Specification for Molded Glass Fiber Reinforced Gypsum Parts.pdf

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    ASTM C1381 C1381M-1997(2018) Standard Specification for Molded Glass Fiber Reinforced Gypsum Parts.pdf

    1、Designation: C1381/C1381M 97 (Reapproved 2018)Standard Specification forMolded Glass Fiber Reinforced Gypsum Parts1This standard is issued under the fixed designation C1381/C1381M; the number immediately following the designation indicates theyear of original adoption or, in the case of revision, th

    2、e year of last revision. A 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 molded glass fiber reinforcedgypsum (GRG) parts, which are nonload-bearing, thin-s

    3、hell,ornamental shapes for architectural embellishment of interiorbuilding construction.1.2 The values stated in either SI units or inch-pound 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 equivale

    4、nts; therefore, each systemshall be used independently of the other. Combining valuesfrom the two systems may result in non-conformance with thestandard.1.3 The information presented refers to the molded surfaceof the part.1.4 The text of this standard references footnotes, whichprovide explanatory

    5、material. These footnotes shall not beconsidered as requirements of the standard.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides

    6、 and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C11 Terminology Relating to Gypsum and Related BuildingMaterials and SystemsC1355/C1355M Specification for Glass Fiber ReinforcedGypsum Composites3. Term

    7、inology3.1 DefinitionsDefinitions of terms shall be in accordancewith Terminology C11.3.2 Definitions of Terms Specific to This Standard:3.2.1 control thickness, nthe thickness of the GRG partwhere abutting other GRG parts, other products or at fasteningpoints.3.2.2 embedments, nmaterials encapsulat

    8、ed into the partfor the purpose of suspension, attachment, and stiffening.3.2.3 finish surface, na surface against a mold.3.2.4 GRG part, nan individual molded component usedas architectural embellishment.3.2.5 GRG product, ncombination of GRG parts used asarchitectural embellishment.3.2.6 mock-up,

    9、na presentation assembly of GRG partsdefined by the purchase agreement.3.2.7 part thickness, nthickness of a part at any measure-ment point.4. Materials and Manufacture4.1 MaterialsGRG parts shall be produced using the samematerials used to make the composites in conformance withSpecification C1355/

    10、C1355M.4.2 Manufacture:4.2.1 GRG parts shall be manufactured from the mixedslurry of alpha gypsum cement, potable water and additives,when used, and not less than 5 % by weight glass fiberreinforcement using either the hand lay-up or the spray-upprocess in a mold.4.2.2 GRG parts shall be produced ac

    11、cording to approvedshop drawings.4.2.3 Shop drawings shall specify part dimensions,quantities, recommended attachment points and methods,reinforcements, embedments, and tolerance.5. Mechanical Properties5.1 GRG parts shall be made from materials to makecomposites having properties in accordance with

    12、 SpecificationC1355/C1355M.6. Dimensions and Tolerances of GRG Parts6.1 Part ThicknessThe thickness of the GRG part shall benot less than316 in. 5 mm.6.2 Control Thickness, shall be not less than516 in. 8 mm.1This specification is under the jurisdiction of ASTM Committee C11 onGypsum and Related Bui

    13、lding Materials and Systems and is the direct responsibilityof Subcommittee C11.01 on Specifications and Test Methods for Gypsum Products.Current edition approved Oct. 1, 2018. Published October 2018. Originallyapproved in 1998. Last previous edition approved in 2013 as C1381/C1381M 97 (2013). DOI:

    14、10.1520/C1381_C1381M-97R18.2For 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.Copyright ASTM International, 100

    15、Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Rec

    16、ommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.16.3 StraightnessAt any point on a line generally along aplane, an edge, or a surface, the molded side of the part shallnot vary from straight 618 inches in 8 linear ft 1 mm in750 mm.6.4 Dimensions, as sp

    17、ecified in approved shop drawings,pertaining to the individual part.6.4.1 Overall Width, 18 in. 3 mm.6.4.2 Dimensions Within the Overall Width, 116 in.2 mm.6.4.3 Overall Length, 18 in. 3 mm.6.4.4 Dimensions Within the Overall Length, 116 in.2 mm.7. Workmanship, Finish, and Appearance7.1 GRG parts sh

    18、all be produced to quality, tolerances, andsurface standards set within this specification.7.2 The standard finished surface shall be suitable to receiveflat paint.7.3 Finishes with sheen, direct light or special lightingconditions require additional coats of primer, sanding andfinishing by the inst

    19、aller or painter.8. Sampling8.1 When specified by the purchase agreement, samples ofthe GRG part shall be taken at the place of manufacture formeasuring in accordance with Section 6.8.2 Mock-UpWhen specified by the purchase agreement,a mock-up shall be supplied.9. Inspection9.1 Inspection of the GRG

    20、 parts shall be agreed uponbetween the purchaser and the supplier as part of the purchaseagreement.10. Rejection and Rehearing10.1 Rejection of GRG parts that fail to conform to therequirements of this specification shall be reported in writing tothe producer or supplier within 14 calendar days from

    21、 receiptof parts and prior to installation.11. Certification11.1 When specified in the purchase agreement, the pur-chaser shall be furnished certification that samples representingeach lot have been either tested or inspected as directed in thisspecification and the requirements have been met. Whens

    22、pecified in the purchase agreement, a report of test resultsshall be furnished.12. Quality Assurance12.1 Each manufacturers measuring of samples shall berepresentative of actual production procedures and materials.The GRG manufacturer shall certify that the materials are thesame as those used to pro

    23、duce the composite according toC1355/C1355M.13. Marking13.1 Each GRG part shall be marked clearly according tothe project shop drawings.14. Packaging14.1 Packaging shall ensure that the GRG parts arrive at thejobsite in good condition when handled and shipped accordingto industry operating standards

    24、.15. Keywords15.1 glass fiber reinforced gypsum; glass fiber reinforcedgypsum composite; glass fiber reinforced gypsum parts; GRG;GRG composites; GRG partsASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard.

    25、 Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed e

    26、very five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible tec

    27、hnical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshoho

    28、cken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 97 (2018)2


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