ASTM C51-07
(Terminology)Standard Terminology Relating to Lime and Limestone (as used by the Industry)
Standard Terminology Relating to Lime and Limestone (as used by the Industry)
SCOPE
DESIG: C51 07 ^TITLE: Standard Terminology Relating to Lime and Limestone (as used by the Industry) ^SCOPE:1. Scope
1.1 This terminology refers to the terms relating to lime and limestone products as used by the industry.
1.2 Where appropriate, the various terms defined below should be prefixed with one or other of the adjectives "high-calcium," "magnesian," or "dolomitic." (Examples: dolomitic quicklime; high-calcium hydraulic hydrated lime; magnesian or dolomitic limestone.)
1.3 The composition of a limestone should be given in terms of a percentage of the carbonates present. In limestone of interest to the lime industry, it is usually assumed that the material consists almost entirely of carbonates. Where this assumption is not valid, the percentage of noncarbonate material should be determined, and the composition expressed in terms of the carbonate material present.
1.4 For specific application of lime or a limestone product, see the appropriate ASTM specification.
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Designation:C51–07
Standard Terminology Relating to
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Lime and Limestone (as used by the Industry)
This standard is issued under the fixed designation C51; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
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.
material for soil pH adjustment. See Specification C602.
1. Scope*
1.1 This terminology refers to the terms relating to lime and
air-slaked lime—the product containing various proportions
limestone products as used by the industry.
of the oxides, hydroxides, and carbonates of calcium and
1.2 Where appropriate, the various terms defined below
magnesium which results from the exposure of quicklime to
should be prefixed with one or other of the adjectives “high-
the air in sufficient quantity to show physical signs of
calcium,” “magnesian,” or “dolomitic.” (Examples: dolomitic
hydration (difficult to determine visually in pulverized
quicklime; high-calcium hydraulic hydrated lime; magnesian
quicklime).
or dolomitic limestone.)
alkaline earth solutions (AES)—an aqueous solution of the
1.3 Thecompositionofalimestoneshouldbegiveninterms
oxide or hydroxide of an element of group IIa in the periodic
of a percentage of the carbonates present. In limestone of
table, such as calcium or magnesium. These solutions may
interest to the lime industry, it is usually assumed that the
be strongly alkaline. See pH.
material consists almost entirely of carbonates. Where this
available lime index—thoseconstituentsofalimewhichenter
assumption is not valid, the percentage of noncarbonate mate-
into a desired reaction under the conditions of a specific
rial should be determined, and the composition expressed in
method or process.
terms of the carbonate material present.
building or construction lime—a lime whose chemical and
1.4 For specific application of lime or a limestone product,
physical characteristics and method of processing make it
see the appropriate ASTM specification.
suitable for the ordinary or special construction uses of the
product.
2. Referenced Documents
by-product lime—by-product limes include a variety of Cal-
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2.1 ASTM Standards:
cium and/or Calcium/Magnesium compounds that are usable
C270 Specification for Mortar for Unit Masonry
for specific applications but generally do not meet one or
C602 Specification for Agricultural Liming Materials
more specifications required of primary lime products.
Examples include lime kiln dust and lime hydrator rejects. It
3. Terminology
isadvisedthatthespecificcompositions,physicalproperties,
agricultural lime—either ground quicklime or hydrated lime performance characteristics, and anticipated variabilities of
such materials be evaluated for the service intended.
whose calcium and magnesium content is capable of neu-
tralizing soil acidity. calcareous—originating from predominately calcium carbon-
ate or one of its derivative forms.
agricultural limestone—ground or pulverized limestone
whose calcium and magnesium content is capable of neu- calcia—the chemical compound calcium oxide (CaO).
calcined pozzolans—materials that are produced by calcina-
tralizing soil acidity.
tion of natural siliceous or alumino-siliceous earths, such
DISCUSSION—Agricultural lime is a very powerful neutralizing agent.
calcination being for the purpose of activation of pozzolanic
Agricultural limestone, often referred to as “aglime” is the predominate
properties.
Cement-Lime Mortar—Cement-Lime Mortar primarily con-
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This terminology is under the jurisdiction of ASTM Committee C07 on Lime
sists of hydraulic cement, hydrated lime or lime putty,
and is the direct responsibility of Subcommittee C07.08 on Editorial and Nomen-
mason’s sand and water.
clature
Current edition approved July 15, 2007. Published August 2007. Originally
DISCUSSION—These mortars can be specified by proportions or
approved in 1922. Last previous edition approved in 2006 as C51 – 06. DOI:
properties indicated in Specification C270.
10.1520/C0051-07.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
chemical lime—a quicklime or hydrated lime whose chemical
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
and physical characteristics and method of processing make
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C51–07
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