ASTM C207-06(2011)
(Specification)Standard Specification for Hydrated Lime for Masonry Purposes
Standard Specification for Hydrated Lime for Masonry Purposes
ABSTRACT
This specification covers four types of hydrated lime. Type N and S are suitable for use in mortar, in scratch and brown coats of cement plaster, for stucco, and for addition to Portland-cement concrete. Types NA and SA are air-entrained hydrated limes that are suitable for use in any of the above uses where the inherent properties of lime and air-entrainment are desired. The four types of lime under this specification shall be designated as Type N which is the normal hydrated lime for masonry purposes, type S which is the special hydrated lime for masonry purposes, type NA which is the normal air-entraining hydrated lime for masonry purposes and type SA which is the special air-entraining hydrated lime for masonry purposes. Hydrated lime for masonry purposes shall conform to the required chemical composition for calcium and magnesium oxides and carbon dioxide. The hydrated lime covered by Types N or S in this specification shall contain no additives for the purpose of entraining air.
SCOPE
1.1 This specification covers four types of hydrated lime. Types N and S are suitable for use in mortar, in scratch and brown coats of cement plaster, for stucco, and for addition to portland-cement concrete. Types NA and SA are air-entrained hydrated limes that are suitable for use in any of the above uses where the inherent properties of lime and air-entrainment are desired. The four types of lime sold under this specification shall be designated as follows:
1.1.1 Type N—Normal hydrated lime for masonry purposes.
1.1.2 Type S—Special hydrated lime for masonry purposes.
1.1.3 Type NA—Normal air-entraining hydrated lime for masonry purposes.
1.1.4 Type SA—Special air-entraining hydrated lime for masonry purposes.
Note 1—Type S, special hydrated lime, and Type SA, special air-entraining hydrated lime, are differentiated from Type N, normal hydrated lime, and Type NA, normal air-entraining hydrated lime, principally by their ability to develop high, early plasticity and higher water retentivity, and by a limitation on their unhydrated oxide content.
Note 2—For normal (Type N) and special (Type S) finishing hydrated lime, refer to Specification C206.
Note 3—Some building codes prohibit the use of air-entraining materials in mortar, because of the accompanying reduction in bond and compressive strength. Where increased freeze-thaw resistance is important, air-entraining may be beneficial. Air-entraining lime should not be used as a finishing lime.
Note 4—For lime putty, refer to Specification C1489.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Standards Content (Sample)
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Designation:C207 −06 (Reapproved 2011)
Standard Specification for
Hydrated Lime for Masonry Purposes
This standard is issued under the fixed designation C207; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number 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. Scope mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This specification covers four types of hydrated lime.
Types N and S are suitable for use in mortar, in scratch and
2. Referenced Documents
brown coats of cement plaster, for stucco, and for addition to
2.1 ASTM Standards:
portland-cement concrete. Types NA and SA are air-entrained
C25 Test Methods for Chemical Analysis of Limestone,
hydratedlimesthataresuitableforuseinanyoftheaboveuses
Quicklime, and Hydrated Lime
where the inherent properties of lime and air-entrainment are
C50 Practice for Sampling, Sample Preparation, Packaging,
desired. The four types of lime sold under this specification
and Marking of Lime and Limestone Products
shall be designated as follows:
C110 Test Methods for Physical Testing of Quicklime,
1.1.1 Type N—Normal hydrated lime for masonry purposes.
Hydrated Lime, and Limestone
1.1.2 Type S—Special hydrated lime for masonry purposes.
C206 Specification for Finishing Hydrated Lime
1.1.3 Type NA—Normal air-entraining hydrated lime for
C226 Specification for Air-Entraining Additions for Use in
masonry purposes.
the Manufacture of Air-Entraining Hydraulic Cement
1.1.4 Type SA—Special air-entraining hydrated lime for
C778 Specification for Standard Sand
masonry purposes.
C1489 Specification for Lime Putty for Structural Purposes
NOTE 1—Type S, special hydrated lime, and Type SA, special air-
entraining hydrated lime, are differentiated from Type N, normal hydrated
3. Terminology
lime, and Type NA, normal air-entraining hydrated lime, principally by
3.1 Definitions:
their ability to develop high, early plasticity and higher water retentivity,
and by a limitation on their unhydrated oxide content. 3.1.1 standard mortar, n—amortarcontainingonlyhydrated
NOTE 2—For normal (Type N) and special (Type S) finishing hydrated
lime and sand meeting the requirements of Specification C778.
lime, refer to Specification C206.
The mortar proportions are one part hydrated lime to three
NOTE 3—Some building codes prohibit the use of air-entraining
parts of sand by volume as indicated in Table 4 of Test
materials in mortar, because of the accompanying reduction in bond and
Methods C110.
compressive strength. Where increased freeze-thaw resistance is
important, air-entraining may be beneficial.Air-entraining lime should not
be used as a finishing lime. 4. Additions
NOTE 4—For lime putty, refer to Specification C1489.
4.1 Types NA and SA hydrated lime covered by this
1.2 This standard does not purport to address all of the
specification shall contain additives for the purpose of entrain-
safety concerns, if any, associated with its use. It is the
ing air, and such additives shall conform to the requirements of
responsibility of the user of this standard to establish appro-
Specification C226.
priate safety and health practices and determine the applicabil-
ity of regulatory limitations prior to use. 5. Manufacturer’s Statement
1.3 This international standard was developed in accor- 5.1 At the request of the purchaser, the manufacturer shall
dance with internationally recognized principles on standard- state in writing the nature, amount, and identity of the
ization established in the Decision on Principles for the air-entraining agent used and of any processing addition that
Development of International Standards, Guides and Recom- may have been used, and also, if requested, shall supply test
data showing compliance of such air-entraining addition with
the provisions of Specification C226.
This specification is under the jurisdiction of ASTM Committee C07 on Lime
and Limestone and is the direct responsibility of Subcommittee C07.02 on
Specifications and Guidelines. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
CurrenteditionapprovedJune1,2011.PublishedJuly2011.Originallyapproved contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
in 1946. Last previous edition approved in 2006 as C207 – 06. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
C0207-06R11. the ASTM website.
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