ASTM C1586-05
(Guide)Standard Guide for Quality Assurance of Mortars
Standard Guide for Quality Assurance of Mortars
SIGNIFICANCE AND USE
This document is intended to provide guidance and clarification to designers, specifiers, inspectors, testing agencies, producers, and users in specifying and evaluating masonry mortar.
Users of documents Specification C 270 and Test Method C 780 often confuse and sometimes inadvertently misuse parts of the two documents when specifying or evaluating masonry mortar. This guide seeks to address specific items within Specification C 270 and Test Method C 780 to help promote their proper use and interpretation.
SCOPE
1.1 This document provides guidance regarding the proper use of Specification C 270 and Test Method C 780 for evaluating masonry mortar produced in the laboratory and at the construction site.
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Standards Content (Sample)
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Designation:C1586–05
Standard Guide for
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Quality Assurance of Mortars
This standard is issued under the fixed designation C1586; 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.
1. Scope* 4.2 Proportion Specifications—These Specifications direct
the mason to produce the masonry mortar using designated
1.1 This document provides guidance regarding the proper
volumetricproportionsofcementitiousmaterialsandaggregate
use of Specification C270 and Test Method C780 for evaluat-
as set forth in Table 1, Proportion Specifications, of Specifica-
ing masonry mortar produced in the laboratory and at the
tion C270 for the Type of mortar specified. This procedure of
construction site.
specifying mortar requires no sampling and testing of mortar,
2. Referenced Documents
and hence, no measurement of mortar properties in the labo-
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ratory or the field is required. All that is necessary is field
2.1 ASTM Standards:
confirmation of the proper proportions of the mixes used in
C144 Specification for Aggregate for Masonry Mortar
construction.
C270 Specification for Mortar for Unit Masonry
4.3 Property Specifications—These Specifications require
C780 Test Method for Preconstruction and Construction
testing of laboratory-prepared mortar for compliance with the
Evaluation of Mortars for Plain and Reinforced Unit
requirements of Table 2, Property Specifications, of Specifica-
Masonry
tion C270 for the Type of mortar specified.
3. Significance and Use
4.3.1 The Property Specifications require evaluation of a
mortar with a consistency (flow) of 110 6 5 %. This is an
3.1 This document is intended to provide guidance and
arbitrarily established mortar consistency that is used to
clarification to designers, specifiers, inspectors, testing agen-
approximate the water content of mortar after it is placed in a
cies, producers, and users in specifying and evaluating ma-
masonry assemblage with absorbent masonry units. The
sonry mortar.
amount of water required in mortar produced at the construc-
3.2 Users of documents Specification C270 and Test
tion site is normally greater than the amount used for Specifi-
Method C780 often confuse and sometimes inadvertently
cation C270 Property Specifications testing.
misuse parts of the two documents when specifying or evalu-
4.3.2 Do not use the Specification C270 Property Specifi-
ating masonry mortar. This guide seeks to address specific
cations requirements to evaluate construction site-produced
items within Specification C270 andTest Method C780 to help
mortars. Due to the higher amount of water necessary for
promote their proper use and interpretation.
actual masonry construction, mortar produced and sampled in
4. Specifying Masonry Mortar
the field will typically have lower compressive strength than
that produced in the laboratory per Specification C270.
4.1 Use Specification C270 to specify masonry mortar by
4.3.3 When mortar is specified by the Property Specifica-
either the Proportion or Property Specifications of that stan-
tions, the quantities of cementitious materials and aggregates
dard, but not both. If neither the Proportion nor Property
as determined through laboratory testing are converted to
specification is given, Specification C270 the Proportion speci-
volumetric proportions to produce masonry mortar at the
fication to be used.
construction site.
5. Quality Assurance of Masonry Mortar
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This guide is under the jurisdiction of ASTM Committee C12 on Mortars and
5.1 Mortar Materials—Verify that individual mortar mate-
GroutsforUnitMasonryandisthedirectresponsibilityofSubcommitteeC12.03on
Specifications for Mortars.
rials being used meet the ASTM Standards listed under the
Current edition approved Feb. 1, 2005. Published April 2005. Originally
Materials Section of Specification C270. Compliance is typi-
approved in 2004. Last previous edition approved in 2004 as C1586 – 04. DOI:
cally verified by submission of a letter of certification or test
10.1520/C1586-05.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or report for each mortar material.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
NOTE 1—If any of the materials used do not comply with the material
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. requirements of Specification C270, the Proportion Specifications can not
*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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