ASTM C1586-20
(Guide)Standard Guide for Quality Assurance of Mortars
Standard Guide for Quality Assurance of Mortars
SIGNIFICANCE AND USE
3.1 This document is intended to provide guidance and clarification to designers, specifiers, inspectors, testing agencies, producers, and users in specifying and evaluating masonry mortar.
3.2 Users of documents Specification C270 and Test Method C780 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 C270 and Test Method C780 to help promote their proper use and interpretation.
SCOPE
1.1 This document provides guidance regarding the proper use of Specification C270 and Test Method C780 for evaluating masonry mortar produced in the laboratory and at the construction site.
1.2 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.
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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: C1586 − 20
Standard Guide for
1
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* items within Specification C270 andTest Method C780 to help
promote their proper use and interpretation.
1.1 This document provides guidance regarding the proper
use of Specification C270 and Test Method C780 for evaluat-
4. Specifying Masonry Mortar
ing masonry mortar produced in the laboratory and at the
construction site.
4.1 Use Specification C270 to specify masonry mortar by
either the Proportion or Property Specifications of that
1.2 This international standard was developed in accor-
standard, but not both. If neither Proportion or Property
dance with internationally recognized principles on standard-
Specification C270 are specified, the Proportion specification
ization established in the Decision on Principles for the
shall govern, unless data are presented to and accepted by the
Development of International Standards, Guides and Recom-
specifier to show that the mortar meets the property specifica-
mendations issued by the World Trade Organization Technical
tion requirements.
Barriers to Trade (TBT) Committee.
4.2 Proportion Specifications—These Specifications direct
2. Referenced Documents
the mason to produce the masonry mortar using designated
2
2.1 ASTM Standards: volumetricproportionsofcementitiousmaterialsandaggregate
C144 Specification for Aggregate for Masonry Mortar
as set forth in the Specification C270 Proportion Specifications
C270 Specification for Mortar for Unit Masonry table for the Type of mortar specified. This procedure of
C780 Test Method for Preconstruction and Construction
specifying mortar requires no sampling or testing of mortar,
Evaluation of Mortars for Plain and Reinforced Unit and hence, no measurement of mortar properties in the labo-
Masonry
ratory or the field is required. All that is necessary is field
confirmation of the proper proportions of the mixes used in
3. Significance and Use
construction.
3.1 This document is intended to provide guidance and
4.3 Property Specifications—These Specifications require
clarification to designers, specifiers, inspectors, testing
testing of laboratory-prepared mortar for compliance with the
agencies, producers, and users in specifying and evaluating
requirements of the Specification C270 Property Specifications
masonry mortar.
table for the Type of mortar specified.
4.3.1 The Property Specifications require evaluation of a
3.2 Users of documents Specification C270 and Test
mortar with a consistency (flow) of 110 6 5 %. This is an
Method C780 often confuse and sometimes inadvertently
arbitrarily established mortar consistency that is used to
misuse parts of the two documents when specifying or evalu-
approximate the water content of mortar after it is placed in a
ating masonry mortar. This guide seeks to address specific
masonry assemblage with absorbent masonry units. The
amount of water required in mortar produced at the construc-
1
tion site is normally greater than the amount used for Specifi-
This guide is under the jurisdiction of ASTM Committee C12 on Mortars and
Grouts for Unit Masonryand is the direct responsibility of Subcommittee C12.03 on
cation C270 Property Specifications testing.
Specifications for Mortars.
4.3.2 Do not use the Specification C270 Property Specifi-
Current edition approved July 1, 2020. Published July 2020. Originally approved
cations requirements to evaluate construction site-produced
in 2004. Last previous edition approved in 2018 as C1586 – 18. DOI: 10.1520/
C1586-20.
mortars. Due to the higher amount of water necessary for
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
actual masonry construction, mortar produced and sampled in
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
the field will typically have lower compressive strength than
Standards volume information, refer to the standard’s Document Summary page on
that produced in the laboratory per Specification C270.
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
1
---------------------- Page: 1 ----------------------
C1586 − 20
4.3.3 When mortar is specified by the Property Specification C270; however it may have some value i
...
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: C1586 − 18 C1586 − 20
Standard Guide for
1
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*
1.1 This document provides guidance regarding the proper use of Specification C270 and Test Method C780 for evaluating
masonry mortar produced in the laboratory and at the construction site.
1.2 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C144 Specification for Aggregate for Masonry Mortar
C270 Specification for Mortar for Unit Masonry
C780 Test Method for Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry
3. Significance and Use
3.1 This document is intended to provide guidance and clarification to designers, specifiers, inspectors, testing agencies,
producers, and users in specifying and evaluating masonry mortar.
3.2 Users of documents Specification C270 and Test Method C780 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
C270 and Test Method C780 to help promote their proper use and interpretation.
4. Specifying Masonry Mortar
4.1 Use Specification C270 to specify masonry mortar by either the Proportion or Property Specifications of that standard, but
not both. If neither Proportion or Property Specification C270 are specified, the Proportion specification shall govern, unless data
are presented to and accepted by the specifier to show that the mortar meets the property specification requirements.
4.2 Proportion Specifications—These Specifications direct the mason to produce the masonry mortar using designated
volumetric proportions of cementitious materials and aggregate as set forth in Table 2, Proportionthe Specification C270
Specifications, of SpecificationProportion Specifications table C270for the Type of mortar specified. This procedure of specifying
mortar requires no sampling or testing of mortar, and hence, no measurement of mortar properties in the laboratory or the field
is required. All that is necessary is field confirmation of the proper proportions of the mixes used in construction.
4.3 Property Specifications—These Specifications require testing of laboratory-prepared mortar for compliance with the
requirements of Table 1, Propertythe Specification C270 Specifications, of SpecificationProperty Specifications table C270for the
Type of mortar specified.
4.3.1 The Property Specifications require evaluation of a mortar with a consistency (flow) of 110 6 5 %. This is an arbitrarily
established mortar consistency that is used to approximate the water content of mortar after it is placed in a masonry assemblage
with absorbent masonry units. The amount of water required in mortar produced at the construction site is normally greater than
the amount used for Specification C270 Property Specifications testing.
1
This guide is under the jurisdiction of ASTM Committee C12 on Mortars and Grouts for Unit Masonryand is the direct responsibility of Subcommittee C12.03 on
Specifications for Mortars.
Current edition approved Dec. 15, 2018July 1, 2020. Published December 2018July 2020. Originally approved in 2004. Last previous edition approved in 20172018 as
C1586 – 17.C1586 – 18. DOI: 10.1520/C1586-18.10.1520/C1586-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. 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
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C1586 − 20
4.3.2 Do not use the Specification C270 Property Specifications requirements to evaluate construction site-produced mortars.
Due to the higher amount of water necess
...
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