ASTM C317 C317M-2000(2015) Standard Specification for Gypsum Concrete《石膏混凝土的标准规格》.pdf
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1、Designation: C317/C317M 00 (Reapproved 2015)Standard Specification forGypsum Concrete1This standard is issued under the fixed designation C317/C317M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A numb
2、er 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 U.S. Department of Defense.1. Scope1.1 This specification covers mill-mixed gypsum concrete,
3、consisting essentially of calcined gypsum and suitableaggregate, requiring the addition of water only at the job site.Gypsum concrete is intended for use in the construction ofpoured-in-place roof decks or slabs. Two classes, based on thecompressive strength and density, are covered.1.2 The values s
4、tated in either inch-pound units or SI unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in nonconformancewith the standard.2. R
5、eferenced Documents2.1 ASTM Standards:2C11 Terminology Relating to Gypsum and Related BuildingMaterials and SystemsC28/C28M Specification for Gypsum PlastersC35 Specification for Inorganic Aggregates for Use in Gyp-sum PlasterC472 Test Methods for Physical Testing of Gypsum, Gyp-sum Plasters and Gyp
6、sum Concrete3. Terminology3.1 Definitions of terms shall be in accordance with Termi-nology C11.4. Materials and Manufacture4.1 Gypsum concrete shall consist of calcined gypsum towhich is added aggregates, wood chips, or wood shavings inproportion to meet the applicable requirements of this specifi-
7、cation.4.2 Calcined GypsumSpecification C28/C28M.4.3 AggregatesSpecification C35.4.4 Wood Chips or Wood Shavings, shall be dry wood,uniform and clean in appearance, passing a 1-in. 25-mmsieve, and not more than116 in. 1.5 mm thick.5. Physical Properties5.1 Setting TimeGypsum concrete shall set in no
8、t less than20 min and not more than 90 min.5.2 Compressive StrengthGypsum concrete shall have thefollowing compressive strength for the respective classes:Class Compressive Strength, min,psi MPaA 500 3.5B 1000 7.05.3 DensityGypsum concrete, Class A, shall have a den-sity of not more than 60 lb/ft396
9、0 kg/m3.6. Sampling6.1 Randomly select at least 1 % of the packages, but notless than five packages. Take samples from both the outerportion and the center of each package. Mix the samples soobtained to provide a composite sample of not less than 15 lb6.5 kg. Immediately place the sample in a clean,
10、 dry, airtightcontainer for delivery to the laboratory.7. Test Methods7.1 Determine the physical properties of gypsum concrete inaccordance with Test Methods C472.7.1.1 Determine the setting time by the Vicat method.8. Inspection8.1 Inspection of the gypsum concrete shall be agreed uponbetween the p
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