ASTM C207-2018 Standard Specification for Hydrated Lime for Masonry Purposes.pdf

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1、Designation: C207 06 (Reapproved 2011)C207 18Standard 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 re

2、vision. 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 U.S. Department of Defense.1. Scope1.1 This specification covers four types of

3、 hydrated lime. Types N and S are suitable for use in mortar, in scratch and browncoats of cement plaster, for stucco, and for addition to portland-cement concrete. Types NAand SAare air-entrained hydrated limesthat are suitable for use in any of the above uses where the inherent properties of lime

4、and air-entrainment are desired. The fourtypes of lime sold under this specification shall 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 for masonry purposes.1.1.4

5、 Type SASpecial air-entraining hydrated lime for masonry purposes.NOTE 1Type S, special hydrated lime, and Type SA, special air-entraining hydrated lime, are differentiated from Type N, normal hydrated lime, andType NA, normal air-entraining hydrated lime, principally by their ability to develop hig

6、h, early plasticity and higher water retentivity, and by a limitationon their unhydrated oxide content.NOTE 2For normal (Type N) and special (Type S) finishing hydrated lime, refer to Specification C206.NOTE 3Some building codes prohibit the use of air-entraining materials in mortar, because of the

7、accompanying reduction in bond and compressivestrength. Where increased freeze-thaw resistance is important, air-entraining may be beneficial.Air-entraining lime should not be used as a finishing lime.NOTE 4For lime putty, refer to Specification C1489.1.2 The values stated in SI units are to be rega

8、rded as standard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine theapplicability of regulat

9、ory limitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organiza

10、tion Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C25 Test Methods for Chemical Analysis of Limestone, Quicklime, and Hydrated LimeC50C50/C50M Practice for Sampling, Sample Preparation, Packaging, and Marking of Lime and Limestone ProductsC110 Test Methods f

11、or Physical Testing of Quicklime, Hydrated Lime, and LimestoneC206 Specification for Finishing Hydrated LimeC226 Specification for Air-Entraining Additions for Use in the Manufacture of Air-Entraining Hydraulic CementC778 Specification for Standard SandC1489 Specification for Lime Putty for Structur

12、al Purposes3. Terminology3.1 Definitions:1 This specification is under the jurisdiction of ASTM Committee C07 on Lime and Limestone and is the direct responsibility of Subcommittee C07.02 on Specificationsand Guidelines.Current edition approved June 1, 2011Oct. 1, 2018. Published July 2011November 2

13、018. Originally approved in 1946. Last previous edition approved in 20062011 asC207 06.C207 06 (2011). DOI: 10.1520/C0207-06R11.10.1520/C0207-18.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsv

14、olume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to ad

15、equately 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 the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshoh

16、ocken, PA 19428-2959. United States13.1.1 standard mortar, na mortar containing only hydrated lime and sand meeting the requirements of Specification C778.Themortar proportions are one part hydrated lime to three parts of sand by volume as indicated in Table 4 of Test Methods C110.4. Additions4.1 Ty

17、pes NA and SA hydrated lime covered by this specification shall contain additives for the purpose of entraining air, andsuch additives shall conform to the requirements of Specification C226.5. Manufacturers Statement5.1 At the request of the purchaser, the manufacturer shall state in writing the na

18、ture, amount, and identity of the air-entrainingagent used and of any processing addition that may have been used, and also, if requested, shall supply test data showingcompliance of such air-entraining addition with the provisions of Specification C226.6. Chemical Composition6.1 Hydrated lime for m

19、asonry purposes shall conform to the following requirements as to chemical composition:Hydrate Types:N NA S SACalcium and magnesium oxides(nonvolatile basis), min, %95 95 95 95Carbon dioxide (as-receivedbasis), max, %:If sample is taken at place ofmanufacture5 5 5 5If sample is taken at any otherpla

20、ce7 7 7 7Unhydrated oxides (as-receivedbasis), max, % 8 8Hydrate Types:N NA S SACalcium and magnesium oxides (nonvolatile basis), min, % 95 95 95 95Carbon dioxide (as-received basis), max, %:If sample is taken at place of manufacture 5 5 5 5If sample is taken at any other place 7 7 7 7Unhydrated oxi

21、des (as-received basis), max, % . . 8 87. Residue, Popping, and Pitting7.1 The four types of hydrated lime for masonry purposes shall conform to one of the following requirements:7.1.1 The residue retained on a No. 30 (600-m)600-m (No. 30) sieve shall not be more than 0.5 %, or7.1.2 If the residue r

22、etained on a No. 30 (600-m)600-m (No. 30) sieve is over 0.5 %, the lime shall show no pops or pits whentested in accordance with the method prescribed in 12.1.2.Test Methods C110 Section 10.8. Plasticity8.1 The putty made from Type S, special hydrate, or Type SA, special air-entraining hydrate, shal

23、l have a plasticity figure ofnot less than 200 Elmey units when tested within 30 min after mixing with water using Test Methods C110.9. Water Retention9.1 Hydrated lime mortar made with Type N (normal hydrated lime) or Type NA (normal air-entraining hydrated lime), aftersuction for 60 s, shall have

24、a water retention value of not less than 75 % when tested in a standard mortar made from the dry hydrateor from putty made from the hydrate which has been soaked for a period of 16 to 24 h.9.2 Hydrated lime mortar made with Type S (special hydrated lime) or Type SA (special air-entraining hydrated l

25、ime), testedin accordance with Section 10 of Test Methods C110, shall have a water retention value of not less than 85 % when tested in astandard mortar made from the dry hydrate using Test Methods C110.10. Air-Entrainment10.1 The hydrated lime covered by Types N or S in this specification shall con

26、tain no additives for the purpose of entrainingair. The air content of a standard mortar made with Types N or S shall not exceed 7 % as determined in accordance with therequirements of Section 8 of Test Methods C110. The air content of standard mortar made with Types NA or SA shall have aminimum of

27、7 % and a maximum of 12 % when tested in accordance with the requirements of Section 8 of Test Methods C110.11. Sampling and Inspection11.1 The sampling, inspection, rejection, retesting, packaging, and marking shall be conducted in accordance with PracticeC50C50/C50M.C207 18212. Test Methods12.1 De

28、termine the properties enumerated in this specification in accordance with the following methods:12.1.1 Chemical AnalysisTest Methods C25.12.1.2 Physical TestsTest Methods C110.13. Special Package Marking13.1 When Types NA or SA air-entraining hydrated lime are delivered in packages, the name and br

29、and of the manufacturer,the type under this specification, and the words “AIR-ENTRAINING” shall be plainly indicated thereon or in case of bulkshipments, so indicated on shipping notices.14. Keywords14.1 hydrated lime; masonry; mortar; plasticity; popping and pitting; residue; stucco; Type N; Type N

30、A; Type S; Type SA;unhydrated oxides; water retention; air entrainingASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of an

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