ASTM C207-91(1997)

Standard Specification for Hydrated Lime for Masonry Purposes

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 retentively, 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.

General Information

• Status: Historical
• Publication Date: 09-Nov-1997
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C07 - Lime and Limestone
• Drafting Committee: C07.02 - Specifications and Guidelines

Relations

• Replaced By: ASTM C207-04 - Standard Specification for Hydrated Lime for Masonry Purposes
• Effective Date: 01-Feb-2004
• Referred By: ASTM C1782/C1782M-23 - Standard Specification for Segmental Concrete Paving Slabs
• Effective Date: 10-Nov-1997
• Referred By: ASTM C936/C936M-23 - Standard Specification for Solid Concrete Interlocking Paving Units
• Effective Date: 10-Nov-1997
• Referred By: ASTM C110-20 - Standard Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone
• Effective Date: 10-Nov-1997
• Referred By: ASTM C887-20 - Standard Specification for Packaged, Dry, Combined Materials for Surface Bonding Mortar
• Effective Date: 10-Nov-1997
• Referred By: ASTM C510-16(2022) - Standard Test Method for Staining and Color Change of Single- or Multicomponent Joint Sealants
• Effective Date: 10-Nov-1997
• Referred By: ASTM E1266-20 - Standard Practice for Processing Mixtures of Lime, Fly Ash, and Heavy Metal Wastes in Structural Fills and Other Construction Applications
• Effective Date: 10-Nov-1997
• Referred By: ASTM C270-19ae1 - Standard Specification for Mortar for Unit Masonry
• Effective Date: 10-Nov-1997
• Referred By: ASTM C476-23 - Standard Specification for Grout for Masonry
• Effective Date: 10-Nov-1997
• Referred By: ASTM C1489-15(2022) - Standard Specification for Lime Putty for Structural Purposes
• Effective Date: 10-Nov-1997
• Referred By: ASTM C1670/C1670M-23 - Standard Specification for Adhered Manufactured Stone Masonry Veneer Units
• Effective Date: 10-Nov-1997
• Referred By: ASTM C387/C387M-23 - Standard Specification for Packaged, Dry, Combined Materials for Concrete and High Strength Mortar
• Effective Date: 10-Nov-1997
• Referred By: ASTM C1722-23 - Standard Guide for Repair and Restoration of Dimension Stone
• Effective Date: 10-Nov-1997
• Referred By: ASTM C1713-23 - Standard Specification for Mortars for the Repair of Historic Masonry
• Effective Date: 10-Nov-1997
• Referred By: ASTM C1707-18 - Standard Specification for Pozzolanic Hydraulic Lime for Structural Purposes
• Effective Date: 10-Nov-1997

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: C 207 – 91 (Reapproved 1997)
Standard Specification for
1
Hydrated Lime for Masonry Purposes
This standard is issued under the fixed designation C 207; 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 (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. Scope C 51 Terminology Relating to Lime and Limestone (As
2
Used by the Industry)
1.1 This specification covers four types of hydrated lime.
C 110 Test Methods for Physical Testing of Quicklime,
Types N and S are suitable for use in mortar, in scratch and
2
Hydrated Lime, and Limestone
brown coats of cement plaster, for stucco, and for addition to
2
C 206 Specification for Finishing Hydrated Lime
portland-cement concrete. Types NA and SA are air-entrained
C 226 Specification for Air-Entraining Additions for Use in
hydrated limes that are suitable for use in any of the above uses
2
the Manufacture of Air-Entraining Portland Cement
where the inherent properties of lime and air-entrainment are
desired. The four types of lime sold under this specification
3. Terminology
shall be designated as follows:
3.1 Definitions:
1.1.1 Type N—Normal hydrated lime for masonry purposes.
3.1.1 hydrated lime—The hydrated lime covered by Types
1.1.2 Type S—Special hydrated lime for masonry purposes.
N or S in this specification shall contain no additives for the
1.1.3 Type NA—Normal air-entraining hydrated lime for
purpose of entraining air. The air content of cement-lime
masonry purposes.
mortars made with Types N or S shall not exceed 7 % as
1.1.4 Type SA—Special air-entraining hydrated lime for
determined in accordance with the requirements of Test Meth-
masonry purposes.
ods C 110. Types NA and SA shall contain an air-entraining
NOTE 1—Type S, special hydrated lime, and Type SA, special air-
additive as specified by Section 4 of this specification. The air
entraining hydrated lime, are differentiated from Type N, normal hydrated
content of cement-lime mortars made with Types NA or SA
lime, and Type NA, normal air-entraining hydrated lime, principally by
shall have a minimum of 7 % and a maximum of 14 % when
their ability to develop high, early plasticity and higher water retentivity,
tested in accordance with the requirements of Test Methods
and by a limitation on their unhydrated oxide content.
C 110.
NOTE 2—For normal (Type N) and special (Type S) finishing hydrated
lime, refer to Specification C 206.
NOTE 4—Air-entraining cement should not be used in running the
NOTE 3—Some building codes prohibit the use of air-entraining mate-
air-content test.
rials in mortar, because of the accompanying reduction in bond and
compressive strength. Where increased freeze-thaw resistance is impor- 3.1.2 For definitions of terms relating to hydrated lime, refer
tant, air-entraining may be beneficial. Air-entraining lime should not be
to Terminology C 51.
used as a finishing lime.
4. Additions
2. Referenced Documents
4.1 Types NA and SA hydrated lime covered by this
2.1 ASTM Standards:
specification shall contain additives for the purpose of entrain-
C 25 Test Methods for Chemical Analysis of Limestone,
ing air, and such additives shall conform to the requirements of
2
Quicklime, and Hydrated Lime
Specification C 226.
C 50 Practice for Sampling, Inspection, Packing, and Mark-
2
ing of Lime and Limestone Products
5. Manufacturer’s Statement
5.1 At the request of the purchaser, the manufacturer shall
state in writing the nature, amount, and identity of the
1
This specification is under the jurisdiction of ASTM Committee C-7 on Lime
air-entraining agent used and of any processing addition that
and is the direct responsibility of Subcommittee C07.02 on Structural Lime.
may have been used, and also, if requested, shall supply test
Current edition approved Sept. 15, 1991. Published November 1991. Originally
e1 data showing compliance of such air-entraining addition with
published as C 207 – 46 T. Last previous edition C 207 – 76 (1988) .
2
Annual Book of ASTM Standards, Vol 04.01. the provisions of Specification C 226.
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C 207
6. Chemical Composition lime), after suction for 60 s, shall have a water retention value
of not less than 75 % when tested in a standard mortar made
6.1 Hydrated lime for masonry purposes shall conform to
from the dry hydrate or from putty made from the hydrate
the following requirements as to chemical composition:
which has been soaked for a period of 16 to 24 h.
H
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