1、Designation: C207 06 (Reapproved 2011)Standard Specification forHydrated Lime for Masonry Purposes1This standard is issued under the fixed designation C207; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、 A number in parentheses indicates the year of last reapproval. Asuperscript 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.1. Scope1.1 This specification covers four types of hydrated li
3、me.Types N and S are suitable for use in mortar, in scratch andbrown coats of cement plaster, for stucco, and for addition toportland-cement concrete. Types NA and SA are air-entrainedhydrated limes that are suitable for use in any of the above useswhere the inherent properties of lime and air-entra
4、inment aredesired. The four types of lime sold under this specificationshall be designated as follows:1.1.1 Type NNormal hydrated lime for masonry purposes.1.1.2 Type SSpecial hydrated lime for masonry purposes.1.1.3 Type NANormal air-entraining hydrated lime formasonry purposes.1.1.4 Type SASpecial
5、 air-entraining hydrated lime formasonry purposes.NOTE 1Type S, special hydrated lime, and Type SA, special air-entraining hydrated lime, are differentiated from Type N, normal hydratedlime, and Type NA, normal air-entraining hydrated lime, principally bytheir ability to develop high, early plastici
6、ty and higher water retentivity,and by a limitation on their unhydrated oxide content.NOTE 2For normal (Type N) and special (Type S) finishing hydratedlime, refer to Specification C206.NOTE 3Some building codes prohibit the use of air-entraining mate-rials in mortar, because of the accompanying redu
7、ction in bond andcompressive strength. Where increased freeze-thaw resistance is impor-tant, air-entraining may be beneficial. Air-entraining lime should not beused as a finishing lime.NOTE 4For lime putty, refer to Specification C1489.1.2 This standard does not purport to address all of thesafety c
8、oncerns, 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 applicabil-ity of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C25 Test Methods for Chemical Analys
9、is of Limestone,Quicklime, and Hydrated LimeC50 Practice for Sampling, Sample Preparation, Packaging,and Marking of Lime and Limestone ProductsC110 Test Methods for Physical Testing of Quicklime,Hydrated Lime, and LimestoneC206 Specification for Finishing Hydrated LimeC226 Specification for Air-Entr
10、aining Additions for Use inthe Manufacture of Air-Entraining Hydraulic CementC778 Specification for SandC1489 Specification for Lime Putty for Structural Purposes3. Terminology3.1 Definitions:3.1.1 standard mortar, na mortar containing only hy-drated lime and sand meeting the requirements of Specifi
11、cationC778. The mortar proportions are one part hydrated lime tothree parts of sand by volume as indicated in Table 4 of TestMethods C110.4. Additions4.1 Types NA and SA hydrated lime covered by thisspecification shall contain additives for the purpose of entrain-ing air, and such additives shall co
12、nform to the requirements ofSpecification C226.5. Manufacturers Statement5.1 At the request of the purchaser, the manufacturer shallstate in writing the nature, amount, and identity of theair-entraining agent used and of any processing addition thatmay have been used, and also, if requested, shall s
13、upply testdata showing compliance of such air-entraining addition withthe provisions of Specification C226.1This specification is under the jurisdiction of ASTM Committee C07 on Limeand is the direct responsibility of Subcommittee C07.02 on Specifications andGuidelines.Current edition approved June
14、1, 2011. Published July 2011. Originally approvedin 1946. Last previous edition approved in 2006 as C207 06. DOI: 10.1520/C0207-06R11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume info
15、rmation, 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.6. Chemical Composition6.1 Hydrated lime for masonry purposes shall conform tothe following requirements as to c
16、hemical composition:Hydrate Types:NNA S SACalcium and magnesium oxides(nonvolatile basis), min, %95 95 95 95Carbon dioxide (as-receivedbasis), max, %:If sample is taken at place ofmanufacture55 5 5If sample is taken at any otherplace77 7 7Unhydrated oxides (as-receivedbasis), max, % 8 87. Residue, P
17、opping, and Pitting7.1 The four types of hydrated lime for masonry purposesshall conform to one of the following requirements:7.1.1 The residue retained on a No. 30 (600-m) sieve shallnot be more than 0.5 %, or7.1.2 If the residue retained on a No. 30 (600-m) sieve isover 0.5 %, the lime shall show
18、no pops or pits when tested inaccordance with the method prescribed in 12.1.2.8. Plasticity8.1 The putty made from Type S, special hydrate, or TypeSA, special air-entraining hydrate, shall have a plasticity figureof not less than 200 Elmey units when tested within 30 minafter mixing with water using
19、 Test Methods C110.9. Water Retention9.1 Hydrated lime mortar made with Type N (normalhydrated lime) or Type NA (normal air-entraining hydratedlime), after suction for 60 s, shall have a water retention valueof not less than 75 % when tested in a standard mortar madefrom the dry hydrate or from putt
20、y made from the hydratewhich has been soaked for a period of 16 to 24 h.9.2 Hydrated lime mortar made with Type S (special hy-drated lime) or Type SA (special air-entraining hydrated lime),tested in accordance with Section 10 of Test Methods C110,shall have a water retention value of not less than 8
21、5 % whentested in a standard mortar made from the dry hydrate usingTest Methods C110.10. Air-Entrainment10.1 The hydrated lime covered by Types N or S in thisspecification shall contain no additives for the purpose ofentraining air. The air content of a standard mortar made withTypes N or S shall no
22、t exceed 7 % as determined in accordancewith the requirements of Section 8 of Test Methods C110. Theair content of standard mortar made with Types NA or SA shallhave a minimum of 7 % and a maximum of 12 % when testedin accordance with the requirements of Section 8 of TestMethods C110.11. Sampling an
23、d Inspection11.1 The sampling, inspection, rejection, retesting, packag-ing, and marking shall be conducted in accordance withPractice C50.12. Test Methods12.1 Determine the properties enumerated in this specifica-tion in accordance with the following methods:12.1.1 Chemical Analysis Test Methods C2
24、5.12.1.2 Physical TestsTest Methods C110.13. Special Package Marking13.1 When Types NAor SAair-entraining hydrated lime aredelivered in packages, the name and brand of the manufacturer,the type under this specification, and the words “AIR-ENTRAINING” shall be plainly indicated thereon or in case ofb
25、ulk shipments, so indicated on shipping notices.14. Keywords14.1 hydrated lime; masonry; mortar; plasticity; poppingand pitting; residue; stucco; Type N; Type NA; Type S; TypeSA; unhydrated oxides; water retention; air entrainingASTM International takes no position respecting the validity of any pat
26、ent rights asserted in connection with any item mentionedin this standard. 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
27、 at any time by the responsible technical committee and must be reviewed every 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 comm
28、ents will receive careful consideration at a meeting of theresponsible technical 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 copyrighte
29、d 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).C207 06 (2011)2
