ASTM C207-06

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 C 206.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 C 1489.
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.

General Information

• Status: Historical
• Publication Date: 31-Dec-2005
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C07 - Lime and Limestone
• Drafting Committee: C07.02 - Specifications and Guidelines

Relations

• Replaces: ASTM C207-05 - Standard Specification for Hydrated Lime for Masonry Purposes
• Effective Date: 01-Jan-2006
• Replaced By: ASTM C207-06(2011) - Standard Specification for Hydrated Lime for Masonry Purposes
• Effective Date: 01-Jun-2011
• Referred By: ASTM C482-20 - Standard Test Method for Bond Strength of Ceramic Tile to Portland Cement Paste
• Effective Date: 01-Jan-2006
• Referred By: ASTM C51-21 - Standard Terminology Relating to Lime and Limestone (as Used by the Industry)
• Effective Date: 01-Jan-2006
• Referred By: ASTM C926-23 - Standard Specification for Application of Portland Cement-Based Plaster
• Effective Date: 01-Jan-2006
• Referred By: ASTM D3260-01(2023) - Standard Test Method for Acid and Mortar Resistance of Factory-Applied Clear Coatings on Extruded Aluminum Products
• Effective Date: 01-Jan-2006
• Referred By: ASTM C887-20 - Standard Specification for Packaged, Dry, Combined Materials for Surface Bonding Mortar
• Effective Date: 01-Jan-2006
• Referred By: ASTM C1782/C1782M-23 - Standard Specification for Segmental Concrete Paving Slabs
• Effective Date: 01-Jan-2006
• Referred By: ASTM C110-20 - Standard Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone
• Effective Date: 01-Jan-2006
• Referred By: ASTM C476-23 - Standard Specification for Grout for Masonry
• Effective Date: 01-Jan-2006
• Referred By: ASTM C270-19ae1 - Standard Specification for Mortar for Unit Masonry
• Effective Date: 01-Jan-2006
• Referred By: ASTM C1722-23 - Standard Guide for Repair and Restoration of Dimension Stone
• Effective Date: 01-Jan-2006
• Referred By: ASTM C387/C387M-23 - Standard Specification for Packaged, Dry, Combined Materials for Concrete and High Strength Mortar
• Effective Date: 01-Jan-2006
• Referred By: ASTM C510-16(2022) - Standard Test Method for Staining and Color Change of Single- or Multicomponent Joint Sealants
• Effective Date: 01-Jan-2006
• Referred By: ASTM C936/C936M-23 - Standard Specification for Solid Concrete Interlocking Paving Units
• Effective Date: 01-Jan-2006

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C207 – 06
Standard Specification for
1
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 Department of Defense.
1. Scope 2. Referenced Documents
2
1.1 This specification covers four types of hydrated lime. 2.1 ASTM Standards:
Types N and S are suitable for use in mortar, in scratch and C25 Test Methods for Chemical Analysis of Limestone,
brown coats of cement plaster, for stucco, and for addition to Quicklime, and Hydrated Lime
portland-cement concrete. Types NA and SA are air-entrained C50 Practice for Sampling, Sample Preparation, Packaging,
hydratedlimesthataresuitableforuseinanyoftheaboveuses and Marking of Lime and Limestone Products
where the inherent properties of lime and air-entrainment are C110 Test Methods for Physical Testing of Quicklime,
desired. The four types of lime sold under this specification Hydrated Lime, and Limestone
shall be designated as follows: C206 Specification for Finishing Hydrated Lime
1.1.1 Type N—Normal hydrated lime for masonry purposes. C226 Specification for Air-Entraining Additions for Use in
1.1.2 Type S—Special hydrated lime for masonry purposes. the Manufacture of Air-Entraining Hydraulic Cement
1.1.3 Type NA—Normal air-entraining hydrated lime for C778 Specification for Standard Sand
masonry purposes. C1489 Specification for Lime Putty for Structural Purposes
1.1.4 Type SA—Special air-entraining hydrated lime for
3. Terminology
masonry purposes.
3.1 Definitions:
NOTE 1—Type S, special hydrated lime, and Type SA, special air-
3.1.1 standard mortar, n—a mortar containing only hy-
entraining hydrated lime, are differentiated from Type N, normal hydrated
drated lime and sand meeting the requirements of Specification
lime, and Type NA, normal air-entraining hydrated lime, principally by
C778. The mortar proportions are one part hydrated lime to
their ability to develop high, early plasticity and higher water retentivity,
and by a limitation on their unhydrated oxide content. three parts of sand by volume as indicated in Table 4 of Test
NOTE 2—For normal (Type N) and special (Type S) finishing hydrated
Methods C110.
lime, refer to Specification C206.
NOTE 3—Some building codes prohibit the use of air-entraining mate-
4. Additions
rials in mortar, because of the accompanying reduction in bond and
4.1 Types NA and SA hydrated lime covered by this
compressive strength. Where increased freeze-thaw resistance is impor-
specification shall contain additives for the purpose of entrain-
tant, air-entraining may be beneficial. Air-entraining lime should not be
ing air, and such additives shall conform to the requirements of
used as a finishing lime.
NOTE 4—For lime putty, refer to Specification C1489. Specification C226.
1.2 This standard does not purport to address all of the
5. Manufacturer’s Statement
safety concerns, if any, associated with its use. It is the
5.1 At the request of the purchaser, the manufacturer shall
responsibility of the user of this standard to establish appro-
state in writing the nature, amount, and identity of the
priate safety and health practices and determine the applicabil-
air-entraining agent used and of any processing addition that
ity of regulatory limitations prior to use.
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.
1
This specification is under the jurisdiction of ASTM Committee C07 on Lime
2
and is the direct responsibility of Subcommittee C07.02 on Structural Lime. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Jan. 1, 2006. Published January 2006. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1946. Last previous edition approved in 2005 as C207 – 05. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/C0207-06. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C207 – 06
6. Chemical Composition tested in accordance with Section 10 of Test Methods C110,
shall have a water retention value of not less than 85 % when
6.1 Hydrated lime for masonry purposes shall conform to
tested in a standard mortar made from the dry hydrate using
the following requirements as to chemical composition:
Test Methods
...