1、Designation: C 206 03Standard Specification forFinishing Hydrated Lime1This standard is issued under the fixed designation C 206; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses in
2、dicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers two types of finishing hydratedlime that are suitab
3、le for use in the scratch, brown, and finishcoats of plaster, for stucco, for mortar, and as an addition toportland-cement concrete. The two types of lime sold underthis specification shall be designated as follows:1.1.1 Type NNormal hydrated lime for finishing purposes,and1.1.2 Type SSpecial hydrat
4、ed lime for finishing purposes.NOTE 1Type N, normal finishing hydrated lime, is differentiated fromType S, special finishing hydrated lime, in that no limitation on the amountof unhydrated oxides is specified for Type N hydrate, and the plasticityrequirement for Type N hydrate shall be determined af
5、ter soaking for 16to 24 h.NOTE 2For lime putty, refer to Specification C 1489.2. Referenced Documents2.1 ASTM Standards:C 25 Test Methods for Chemical Analysis of Limestone,Quicklime, and Hydrated Lime2C 50 Methods of Sampling, Inspection, Packing, and Mark-ing of Lime and Limestone Products2C 51 Te
6、rminology Relating to Lime and Limestone (AsUsed by the Industry)2C 110 Test Methods for Physical Testing of Quicklime,Hydrated Lime, and Limestone2C 842 Specification for Application of Interior GypsumPlaster2C 1489 Specification of Lime Putty for Structural Purposes23. Terminology3.1 DefinitionsFo
7、r definitions of terms relating to hy-drated lime, refer to Terminology C 51.4. Chemical Composition4.1 Hydrated lime for finishing purposes shall conform tothe following requirements as to chemical composition:Type N Type SCalcium and magnesium oxides (nonvolatile basis),min, %95 95Carbon dioxide (
8、as-received basis), max, %If sample is taken at the place of manufacture 5 5If sample is taken at any other place 7 7Unhydrated oxides (as-received basis), max, % . 85. Residue5.1 The percentage residue of finishing hydrated lime shallconform to the following requirements:Residue retained on No. 30
9、(600-m) sieve, max, % 0.5Residue retained on No. 200 (75-m) sieve, max, % 156. Popping and Pitting6.1 Finishing hydrated lime shall show no pops or pits whentested in accordance with the method prescribed in 10.1.2.7. Plasticity7.1 The putty made from Type N, normal finishing hydratedlime, shall hav
10、e a plasticity figure of not less than 200 whensoaked for a period of not less than 16 h nor more than 24 h.7.2 The putty made from Type S, special finishing hydratedlime, shall have a plasticity figure of not less than 200 whentested commencing within 30 min after mixing with water.8. Application o
11、f Interior Gypsum Plaster8.1 For recommended application procedures refer to Speci-fication C 842.9. Sampling, Inspection, etc.9.1 The sampling, inspection, rejection, retesting, packing,and marking shall be conducted in accordance with MethodsC 50.10. Test Methods10.1 The properties enumerated in t
12、his specification shall bedetermined in accordance with the following methods:10.1.1 Chemical AnalysisTest Methods C 25.10.1.2 Physical TestsTest Methods C 110.11. Package Marking11.1 Type N hydrated lime, in bags, conforming to thisspecification, shall be soaked for a minimum of 16 h prior touse.1T
13、his specification is under the jurisdiction of ASTM Committee C07 on Limeand is the direct responsibility of Subcommittee C07.02 on Structural Lime.Current edition approved May 10, 2003. Published July 2003. Originallyapproved in 1946. Replaces C649(1974). Last previous edition approved in 1997as C
14、206 84 (1997).2Annual Book of ASTM Standards, Vol 04.01.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.12. Keywords12.1 finishing lime; masonry; plaster; plasticity; poppingand pitting; residue; Type N; Type S; unhydrated oxidesASTM
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18、n Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, 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).C206032
