ASTM C206-14

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.

General Information

• Status: Historical
• Publication Date: 30-Nov-2014
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C07 - Lime and Limestone
• Drafting Committee: C07.02 - Specifications and Guidelines

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C206 −14
Standard Specification for
1
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* Lime and Limestone
C1301 Test Method for Major and Trace Elements in Lime-
1.1 Thisspecificationcoverstwotypesoffinishinghydrated
stone and Lime by Inductively Coupled Plasma-Atomic
lime that are suitable for use in the scratch, brown, and finish
Emission Spectroscopy (ICP) and Atomic Absorption
coats of plaster, for stucco, for mortar, and as an addition to
(AA)
portland-cement concrete. The two types of lime sold under
C1489 Specification for Lime Putty for Structural Purposes
this specification shall be designated as follows:
1.1.1 Type N—Normal hydrated lime for finishing purposes,
3. Terminology
and
3.1 Definitions—For definitions of terms relating to hy-
1.1.2 Type S—Special hydrated lime for finishing purposes.
drated lime, refer to Terminology C51.
NOTE 1—Type N, normal finishing hydrated lime, is differentiated from
TypeS,specialfinishinghydratedlime,inthatnolimitationontheamount
4. Chemical Composition
of unhydrated oxides is specified for Type N hydrate, and the plasticity
requirement for Type N hydrate shall be determined after soaking for 16
4.1 Hydrated lime for finishing purposes shall conform to
to 24 h.
the following requirements as to chemical composition:
NOTE 2—For lime putty, refer to Specification C1489.
Type N Type S
1.2 The values stated in inch-pound units are to be regarded
Calcium and magnesium oxides (LOI-free basis), 95 95
min, %
as standard. The values given in parentheses are mathematical
Carbon dioxide (as-received basis), max, %
conversions to SI units that are provided for information only
If sample is taken at the place of manufacture 5 5
and are not considered standard.
If sample is taken at any other place 7 7
Unhydrated oxides (as-received basis), max, % . 8
2. Referenced Documents
5. Residue
2
2.1 ASTM Standards:
5.1 The percentage residue of finishing hydrated lime shall
C25 Test Methods for Chemical Analysis of Limestone,
conform to the following requirements:
Quicklime, and Hydrated Lime
C50 Practice for Sampling, Sample Preparation, Packaging,
Residue retained on 600-µm (No. 30) sieve, max, % 0.5
Residue retained on 75-µm (No. 200) sieve, max, % 15
and Marking of Lime and Limestone Products
C51 Terminology Relating to Lime and Limestone (as used
6. Popping and Pitting
by the Industry)
6.1 Finishing hydrated lime shall show no pops or pits when
C110 Test Methods for Physical Testing of Quicklime,
tested in accordance with the method prescribed in 10.1.2.
Hydrated Lime, and Limestone
C842 Specification forApplication of Interior Gypsum Plas-
7. Plasticity
ter
C1271 Test Method for X-ray Spectrometric Analysis of
7.1 The putty made from Type N, normal finishing hydrated
lime, shall have a plasticity figure of not less than 200 when
soaked for a period of not less than 16 h nor more than 24 h.
1
This specification is under the jurisdiction of ASTM Committee C07 on Lime
and Limestone and is the direct responsibility of Subcommitte
...

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. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C206 − 03 (Reapproved 2009) C206 − 14
Standard Specification for
1
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 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C25 Test Methods for Chemical Analysis of Limestone, Quicklime, and Hydrated Lime
C50 Practice for Sampling, Sample Preparation, Packaging, and Marking of Lime and Limestone Products
C51 Terminology Relating to Lime and Limestone (as used by the Industry)
C110 Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone
C842 Specification for Application of Interior Gypsum Plaster
C1271 Test Method for X-ray Spectrometric Analysis of Lime and Limestone
C1301 Test Method for Major and Trace Elements in Limestone and Lime by Inductively Coupled Plasma-Atomic Emission
Spectroscopy (ICP) and Atomic Absorption (AA)
C1489 Specification for Lime Putty for Structural Purposes
3. Terminology
3.1 Definitions—For definitions of terms relating to hydrated lime, refer to Terminology C51.
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 Specifications
and Guidelines.
Current edition approved Dec. 1, 2009Dec. 1, 2014. Published May 2010December 2014. Originally approved in 1946. Replaces C6 – 49 (1974). Last previous edition
approved in 20032009 as C206 – 03.C206 – 03 (2009). DOI: 10.1520/C0206-03R09.10.1520/C0206-14.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
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C206 − 14
4. Chemical Composition
4.1 Hydrated lime for finishing purposes shall conform to the following requirements as to chemical composition:
COLSPEC/colnum="1"
Type N Type S
Calcium and magnesium oxides (nonvolatile basis), 95 95
min, %
Calcium and magnesium oxides (LOI-free basis), 95 95
min, %
Carbon dioxide (as-received basis), max, %
If sample is taken at the place of manufacture 5 5
If sample is taken at the place of manufacture 5 5
If sample is taken at any other place 7 7
If sample is taken at any other place 7 7
Unhydrated oxides (as-received basis), max, % . 8
Unhydrated oxides (as-received basis), max, % . 8
5. Residue
5.1 The percentage residue of finishing hydrated lime shall conform to the following requirements:
Residue retained on No. 30 (600-μm) sieve, max, % 0.5
Residue retained on No. 200 (75-μm) sieve, max, % 15
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
6.1 Finishing hydrated lime shall show no pops or pits when tested in accordance with the method prescribed in 10.1.2.
7. Plasticity
7.1 The putty made from Type N, normal finishing hydrated lime, shall have a plasticity figure of not less than 200 when soaked
f
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