ASTM C206-14(2022)

Standard Specification for Finishing Hydrated Lime

ABSTRACT
This specification covers two types of finishing hydrated lime that are suitable for use in the scratch, brown, and finish coats of plaster, for stucco, for mortar, and as an addition to Portland-cement concrete. The two types of lime are Type N and Type S. Finishing hydrated lime shall show no pops or pits. Chemical composition shall conform to the required contents of calcium and magnesium oxides, carbon dioxide, and unhydrated oxides. The plasticity figure for the lime is specified. The following test methods shall be performed: chemical analysis and physical tests.
SCOPE
1.1 This specification covers two types of finishing hydrated lime that are suitable for use in the scratch, brown, and finish coats of plaster, for stucco, for mortar, and as an addition to portland-cement concrete. The two types of lime sold under this specification shall be designated as follows:  
1.1.1 Type N—Normal hydrated lime for finishing purposes, and  
1.1.2 Type S—Special hydrated lime for finishing purposes.  
Note 1: Type N, normal finishing hydrated lime, is differentiated from Type S, special finishing hydrated lime, in that no limitation on the amount of unhydrated oxides is specified for Type N hydrate, and the plasticity requirement for Type N hydrate shall be determined after soaking for 16 to 24 h.
Note 2: For lime putty, refer to Specification C1489.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 30-Jun-2022
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C07 - Lime and Limestone
• Drafting Committee: C07.02 - Specifications and Guidelines

Relations

• Refers: ASTM C51-23 - Standard Terminology Relating to Lime and Limestone (as Used by the Industry)
• Effective Date: 01-Oct-2023
• Refers: ASTM C25-19e1 - Standard Test Methods for Chemical Analysis of Limestone, Quicklime, and Hydrated Lime
• Effective Date: 01-May-2019
• Refers: ASTM C51-18 - Standard Terminology Relating to Lime and Limestone (as used by the Industry)
• Effective Date: 01-Dec-2018
• Refers: ASTM C110-16 - Standard Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone
• Effective Date: 01-Dec-2016
• Refers: ASTM C110-15e1 - Standard Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone
• Effective Date: 01-Jun-2015
• Refers: ASTM C110-15 - Standard Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone
• Effective Date: 01-Jun-2015
• Refers: ASTM C110-14 - Standard Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone
• Effective Date: 01-Dec-2014
• Refers: ASTM C110-14e1 - Standard Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone
• Effective Date: 01-Dec-2014
• Refers: ASTM C110-11 - Standard Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone
• Effective Date: 01-Jun-2011
• Refers: ASTM C25-11e1 - Standard Test Methods for Chemical Analysis of Limestone, Quicklime, and Hydrated Lime
• Effective Date: 01-Jun-2011
• Refers: ASTM C51-11 - Standard Terminology Relating to Lime and Limestone (as used by the Industry)
• Effective Date: 01-Jun-2011
• Refers: ASTM C110-10 - Standard Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone
• Effective Date: 01-Dec-2010
• Refers: ASTM C842-05(2010)e1 - Standard Specification for Application of Interior Gypsum Plaster
• Effective Date: 01-Oct-2010
• Refers: ASTM C110-09a - Standard Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone
• Effective Date: 15-Jun-2009
• Refers: ASTM C1301-95(2009)e1 - Standard Test Method for Major and Trace Elements in Limestone and Lime by Inductively Coupled Plasma-Atomic Emission Spectroscopy (ICP) and Atomic Absorption (AA)
• Effective Date: 01-Jun-2009

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: C206 −14 (Reapproved 2022)
Standard Specification for
Finishing Hydrated Lime
This standard is issued under the fixed designation C206; 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 C51 Terminology Relating to Lime and Limestone (as Used
by the Industry)
1.1 Thisspecificationcoverstwotypesoffinishinghydrated
C110 Test Methods for Physical Testing of Quicklime,
lime that are suitable for use in the scratch, brown, and finish
Hydrated Lime, and Limestone
coats of plaster, for stucco, for mortar, and as an addition to
C842 Specification forApplication of Interior Gypsum Plas-
portland-cement concrete. The two types of lime sold under
ter
this specification shall be designated as follows:
C1271 Test Method for X-ray Spectrometric Analysis of
1.1.1 Type N—Normal hydrated lime for finishing purposes,
Lime and Limestone
and
C1301 Test Method for Major and Trace Elements in Lime-
1.1.2 Type S—Special hydrated lime for finishing purposes.
stone and Lime by Inductively Coupled Plasma-Atomic
NOTE 1—Type N, normal finishing hydrated lime, is differentiated from
Emission Spectroscopy (ICP) and Atomic Absorption
TypeS,specialfinishinghydratedlime,inthatnolimitationontheamount
(AA)
of unhydrated oxides is specified for Type N hydrate, and the plasticity
C1489 Specification for Lime Putty for Structural Purposes
requirement for Type N hydrate shall be determined after soaking for 16
to 24 h.
NOTE 2—For lime putty, refer to Specification C1489.
3. Terminology
1.2 The values stated in inch-pound units are to be regarded
3.1 Definitions—For definitions of terms relating to hy-
as standard. The values given in parentheses are mathematical
drated lime, refer to Terminology C51.
conversions to SI units that are provided for information only
and are not considered standard.
4. Chemical Composition
1.3 This international standard was developed in accor-
4.1 Hydrated lime for finishing purposes shall conform to
dance with internationally recognized principles on standard-
the following requirements as to chemical composition:
ization established in the Decision on Principles for the
Type N Type S
Development of International Standards, Guides and Recom-
Calcium and magnesium oxides (LOI-free basis), 95 95
min, %
mendations issued by the World Trade Organization Technical
Carbon dioxide (as-received basis), max, %
Barriers to Trade (TBT) Committee.
If sample is taken at the place of manufacture 5 5
If sample is taken at any other place 7 7
Unhydrated oxides (as-received basis), max, % . 8
2. Referenced Documents
2.1 ASTM Standards:
5. Residue
C25 Test Methods for Chemical Analysis of Limestone,
5.1 The percentage residue of finishing hydrated lime shall
Quicklime, and Hydrated Lime
conform to the following requirements:
C50 Practice for Sampling, Sample Preparation, Packaging,
and Marking of Lime and Limestone Products Residue retained on 600 µm (No. 30) sieve, max, % 0.5
Residue retained on 75 µm (No. 200) sieve, max, % 15
6. Popping and Pitting
This specification
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