ASTM C1180-02

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Designation: C 1180 – 02
Standard Terminology of
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Mortar and Grout for Unit Masonry
This standard is issued under the fixed designation C 1180; 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.
1. Scope prescribed materials of water, aggregate, and cementitious
materials that is added to a masonry mortar as an ingredient
1.1 This terminology contains terms, definitions of terms,
to improve one or more chemical or physical properties of
descriptions of terms, nomenclature, and explanations of ab-
the conventional masonry mortar. C 1384
breviations, acronyms, and symbols specifically associated
aggregates, n—a granular mineral material such as natural
with standards under the jurisdiction of ASTM Committee C12
sand, manufactured sand, gravel, crushed stone, and air
on Mortars for Unit Masonry.
cooled blast furnace slag.
1.2 The definitions and descriptions of terms in this termi-
bond enhancer, n—admixture incorporated into a masonry
nology pertain to Test Methods C 780, C 952, C 1019, and
mortar to increase the bond strength between the mortar and
C 1148 and Specifications C 144, C 270, C 404, C 476, C 887,
the masonry unit. C 1384
C 1142, and C 1384.
cementitious material, n—when proportioning masonry mor-
2. Referenced Documents
tars, the following are considered cementitious material:
portland cement, blended hydraulic cement, masonry ce-
2.1 ASTM Standards:
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ment, lime putty, and hydrated lime.
C 144 Specification for Aggregate for Masonry Mortar
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cementitious material, hydraulic, n— an inorganic material
C 270 Specification for Mortar for Unit Masonry
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or a mixture of inorganic materials, that sets and develops
C 404 Specification for Aggregates for Masonry Grout
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strength by chemical reaction with water forming hydrates
C 476 Specification for Grout for Masonry
and is capable of doing so under water.
C 780 Test Method for Preconstruction and Construction
compressive strength, n—the maximum compressive load
Evaluation of Mortars for Plain and Reinforced Unit
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which a specimen will support divided by the cross sectional
Masonry
area of the specimen.
C 887 Specification for Packaged, Dry, Combined Materials
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durability, n—the ability of a material to resist weathering
for Surface Bonding Mortar
action, chemical attack, abrasion, and other conditions of
C 952 Test Method for Bond Strength of Mortar to Masonry
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service.
Units
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flow, n—a laboratory measured mortar property that indicates
C 1019 Test Method of Sampling and Testing Grout
the percent increase in diameter of the base of the truncated
C 1142 Specification for Extended Life Mortar for Unit
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cone of mortar when it is placed on a flow table, and
Masonry
mechanically raised and dropped specified times under
C 1148 Test Method for Measuring the Drying Shrinkage of
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specified conditions.
Masonry Mortar
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gradation, n—the particle size distribution of aggregate as
C 1384 Specification for Modifiers for Masonry Mortars
determined by separation with standard screens. Gradation
3. Terminology
of aggregate is expressed in terms of the individual percent-
ages passing standard screens. Sieve analysis and screen
3.1 Definitions:
analysis are synonyms when referring to gradation of aggre-
admixed mortar, n—masonry mortar that deviates from those
gate.
combinations of materials recognized by Specification C 270
grout, n—a mixture of cementitious materials, aggregates,
in that it also contains an admixture. C 1384
water, with or without admixtures, initially produced to
admixture, n—substance other than the Specification C 270
pouring consistency without segregation. Requirements for
grout are contained in Specification C 476.
mortar, n—a mixture consisting of cementitious materials,
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This terminology is under the jurisdiction of ASTM Committee C12 on Mortars
fine aggregate, water, and with or without admixtures, that is
and Grouts for Unit Masonry and is the direct responsibility of Subcommittee
C12.08 on Terminology. used to construct unit masonry assemblies.
Current edition approved Feb. 10, 2002. Published May 2002. Originally
mortar bond or grout bond, n—adhesion between mortar or
published as C 1180–91. Last previous edition C 1180–00a.
grout and masonry units, reinforcement, or connectors.
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Annual Book of ASTM Standards, Vol 04.05.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the
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