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ASTM C270-19ae1

(Specification)

Standard Specification for Mortar for Unit Masonry

Standard Specification for Mortar for Unit Masonry

ABSTRACT
This specification covers mortars for use in the construction of non-reinforced and reinforced unit masonry structures. Four types of mortar are covered in each of two alternative specifications: (1) proportion specifications and (2) property specifications. The property specification applies to mortar mixed to a specific flow in the laboratory. When neither proportion nor property specifications are specified, the proportion specifications shall govern, unless data are presented to and accepted by the specifier to show that mortar meets the requirements of the property specifications. This specification does not cover the determination of mortar strengths through field testing. The compressive strength values resulting from field tested mortars do not represent the compressive strength of mortar tested in the laboratory nor that of the mortar in the wall. Physical properties of field sampled mortar shall not be used to determine compliance to this specification and are not intended as criteria to determine the acceptance of rejection of the mortar. Compliance to this specification is verified by confirming that the materials used are as specified, meet the requirements as given, and added to the mixer in the proper proportions as described.
SCOPE
1.1 This specification covers mortars for use in the construction of non-reinforced and reinforced unit masonry structures. Four types of mortar are covered in each of two alternative specifications: (1) proportion specifications and (2) property specifications.
Note 1: When the property specification is used to qualify masonry mortars, the testing agency performing the test methods should be evaluated in accordance with Practice C1093.  
1.2 The proportion or property specifications shall govern as specified.  
1.3 When neither proportion or property specifications are specified, the proportion specifications shall govern, unless data are presented to and accepted by the specifier to show that mortar meets the requirements of the property specifications.  
1.4 This standard is not a specification to determine mortar strengths through field testing (see Section 3).  
1.5 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.6 The terms used in this specification are identified in Terminologies C1180 and C1232.  
1.7 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.  
1.8 The following safety hazards caveat pertains only to the test methods section of this specification:  This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.9 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.

General Information

Status
Published
Publication Date
30-Apr-2019
ICS
91.100.10 - Cement. Gypsum. Lime. Mortar
Technical Committee
C12 - Mortars and Grouts for Unit Masonry
Drafting Committee
C12.03 - Specifications for Mortars
Current Stage
Ref Project

Relations

Replaces
ASTM C270-19a - Standard Specification for Mortar for Unit Masonry
Effective Date
01-May-2019
Refers
ASTM C305-20 - Standard Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency
Effective Date
15-Jul-2020
Refers
ASTM C1717-19 - Standard Test Methods for Conducting Strength Tests of Masonry Wall Panels
Effective Date
01-May-2019
Refers
ASTM C150/C150M-19 - Standard Specification for Portland Cement
Effective Date
01-Apr-2019
Refers
ASTM C1586-18 - Standard Guide for Quality Assurance of Mortars
Effective Date
15-Dec-2018
Refers
ASTM C1717-18 - Standard Test Methods for Conducting Strength Tests of Masonry Wall Panels
Effective Date
15-Dec-2018
Refers
ASTM C1180-18 - Standard Terminology of Mortar and Grout for Unit Masonry
Effective Date
01-Dec-2018
Refers
ASTM C780-18 - Standard Test Method for Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry
Effective Date
01-Jul-2018
Refers
ASTM C1384-18e1 - Standard Specification for Admixtures for Masonry Mortars
Effective Date
01-Jun-2018
Refers
ASTM C1384-18 - Standard Specification for Admixtures for Masonry Mortars
Effective Date
01-Jun-2018
Refers
ASTM C1586-17 - Standard Guide for Quality Assurance of Mortars
Effective Date
15-Dec-2017
Refers
ASTM C144-17 - Standard Specification for Aggregate for Masonry Mortar
Effective Date
15-Dec-2017
Refers
ASTM C1384-17 - Standard Specification for Admixtures for Masonry Mortars
Effective Date
01-Dec-2017
Refers
ASTM C1506-17 - Standard Test Method for Water Retention of Hydraulic Cement-Based Mortars and Plasters
Effective Date
01-Aug-2017
Refers
ASTM C1157/C1157M-17 - Standard Performance Specification for Hydraulic Cement
Effective Date
15-Jun-2017

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ASTM C270-19ae1 - Standard Specification for Mortar for Unit Masonry
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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.
´1
Designation:C270 −19a
Standard Specification for
1
Mortar for Unit Masonry
This standard is issued under the fixed designation C270; 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
ε NOTE—Editorially corrected 4.1.1.2 in July 2019.
1. Scope* mental practices and determine the applicability of regulatory
limitations prior to use.
1.1 Thisspecificationcoversmortarsforuseintheconstruc-
1.9 This international standard was developed in accor-
tion of non-reinforced and reinforced unit masonry structures.
dance with internationally recognized principles on standard-
Four types of mortar are covered in each of two alternative
ization established in the Decision on Principles for the
specifications: (1) proportion specifications and (2) property
Development of International Standards, Guides and Recom-
specifications.
mendations issued by the World Trade Organization Technical
NOTE 1—When the property specification is used to qualify masonry
Barriers to Trade (TBT) Committee.
mortars, the testing agency performing the test methods should be
evaluated in accordance with Practice C1093.
2. Referenced Documents
1.2 Theproportionorpropertyspecificationsshallgovernas
2
2.1 ASTM Standards:
specified.
C5 Specification for Quicklime for Structural Purposes
1.3 When neither proportion or property specifications are
C91/C91M Specification for Masonry Cement
specified, the proportion specifications shall govern, unless
C109/C109M Test Method for Compressive Strength of
data are presented to and accepted by the specifier to show that
Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube
mortar meets the requirements of the property specifications.
Specimens)
1.4 This standard is not a specification to determine mortar
C110 Test Methods for Physical Testing of Quicklime,
strengths through field testing (see Section 3).
Hydrated Lime, and Limestone
C128 Test Method for Relative Density (Specific Gravity)
1.5 The text of this specification references notes and
and Absorption of Fine Aggregate
footnotes which provide explanatory material. These notes and
C144 Specification for Aggregate for Masonry Mortar
footnotes (excluding those in tables and figures) shall not be
C150/C150M Specification for Portland Cement
considered as requirements of the standard.
C188 Test Method for Density of Hydraulic Cement
1.6 The terms used in this specification are identified in
C207 Specification for Hydrated Lime for Masonry Pur-
Terminologies C1180 and C1232.
poses
1.7 The values stated in inch-pound units are to be regarded
C305 Practice for Mechanical Mixing of Hydraulic Cement
as standard. The values given in parentheses are mathematical
Pastes and Mortars of Plastic Consistency
conversions to SI units that are provided for information only
C511 Specification for Mixing Rooms, Moist Cabinets,
and are not considered standard.
Moist Rooms, and Water Storage Tanks Used in the
Testing of Hydraulic Cements and Concretes
1.8 The following safety hazards caveat pertains only to the
C595/C595M Specification for Blended Hydraulic Cements
test methods section of this specification: This standard does
C780 Test Method for Preconstruction and Construction
not purport to address all of the safety concerns, if any,
Evaluation of Mortars for Plain and Reinforced Unit
associated with its use. It is the responsibility of the user of this
Masonry
standard to establish appropriate safety, health, and environ-
C952 Test Method for Bond Strength of Mortar to Masonry
1
This specification is under the jurisdiction of ASTM Committee C12 on
Mortars and Grouts for Unit Masonryand is the direct responsibility of Subcom-
2
mittee C12.03 on Specifications for Mortars. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 1, 2019. Published June 2019. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1951. Last previous edition approved in 2019 as C270 – 19. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/C0270-19AE01. 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 ----------------------
´1
C270−19a
3
Units (Withdrawn 2017) sp
...

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ABSTRACT
This specification covers unit masonry mortars whose material and design requirements are governed by a referenced ASTM document stated herein, but are preblended dry in a factory instead of produced from individual raw materials delivered to the job-site. Because field sampling, testing, directly comparable test results, packaging, and traceability of ingredients of preblended dry mortar mix differ from job site mixed mortars, this specification particularly addresses these issues, along with the tight control of ingredient ratios possible with preblended dry mortars.
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1.1 This specification covers masonry mortars whose materials and design requirements are governed by Specification C270 but are preblended dry in a factory instead of produced from individual raw materials delivered to the job-site.  
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Standard Test Methods for Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry

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5.1 During preconstruction and construction evaluations, use of these test methods establishes specific and overall performance characteristics for the mortar system.  
5.2 Preconstruction testing of mortars prebatched by weight provides information for the selection of the individual mortar system best suited for the masonry to be constructed. The recommended tests and their significance are as follows:  
5.2.1 Consistency determinations by cone penetration (Annex A1) allow gaging the water additions for all mortars included in the preconstruction test series. Even if the mortar consistency as measured at the construction site is at a different penetration value than those measured during the preconstruction tests, the cone preparation test serves to standardize water additions for mortars being considered as alternatives before construction. Additional testing of mortar water content-consistency relationships (Annex A4) will allow relating these two factors to batch-to-batch variations at the construction site.  
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5.2.4 Mortar ...
SCOPE
1.1 These test methods cover procedures for the sampling and testing of mortars for composition and for their plastic and hardened properties, either before or during their actual use in construction.
Note 1: Guide C1586 provides guidance on evaluating mortar and clarifies the purpose of both these test methods and Specification C270.
Note 2: The testing agency performing these test methods should be evaluated in accordance with Practice C1093.  
1.2 Preconstruction Evaluation—These test methods permit comparisons of mortars made from different materials under simulated field conditions. They are also used to establish baseline values for comparative evaluation of field mortars.  
1.3 Construction Evaluation—Use of these methods in the field provide a means for quality assurance of field-mixed mortar. They include methods for verifying the mortar mix proportions, comparing test results for field mortars to preconstruction testing, and determining batch-to-batch uniformity of the mortar.  
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ASTM C1713-23(Specification)
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1.1 This specification covers mortar for the repair of masonry constructed with methods and materials that pre-date the origination of current standards of construction. The mortar may be used for non-structural purposes such as repointing of the masonry, or for structural purposes such as, but not restricted to, re-construction or repair of mortar joints that contribute to the structural integrity of the masonry.  
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ABSTRACT
This specification covers two types of grout, fine and coarse grout, for use in the construction of masonry structures. Grout is specified by proportions or strength requirements. Materials used as ingredients in grout shall conform to the requirements specified such as: cementitious materials; blended cements; quicklime; hydrated lime; coal fly ash or raw calcine natural pozzolan; granulated blast furnace slag; air-entraining admixtures; aggregates; water; pumping aids; antifreeze compounds; and storage of materials. Fine grout shall be manufactured with fine aggregates. Coarse grout shall be manufactured with a combination of coarse and fine aggregates. Proportions of ingredients shall be determined by grout proportion requirements and by the specified compressive strength. Materials for grout shall be measured in such a way that the required proportions of the grout materials are controlled and accurately measured. Grout shall be produced using one of the following procedures: grout materials mixed with water at the job site and ready-mixed grout transported to the job site.
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1.1 This terminology covers terms, definitions of terms, descriptions of terms, nomenclature, and explanations of abbreviations, acronyms, and symbols specifically associated with standards under the jurisdiction of ASTM Committee C12 on Mortars and Grouts for Unit Masonry.  
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ASTM C1324-20a(Test Method)
Standard Test Method for Examination and Analysis of Hardened Masonry Mortar

SIGNIFICANCE AND USE
4.1 This test method provides procedures for petrographic examination and chemical analysis of mortar for components of masonry mortar. These components may include portland cement, hydrated calcitic or dolomitic lime, masonry cement, aggregates, and air.  
4.2 The test method consists of procedures and sub-procedures, each requiring a substantial degree of petrographic and chemical skills and relatively elaborate instrumentation.  
4.3 The chemical data considered together with results of petrographic examination of a mortar provide for calculation of component proportions and thus allow a determination of mortar composition as represented by Types M, N, S, and O in Table 1 (Proportion Specification Requirements) of Specification C270.  
4.4 Failure of a mortar to have the composition of any type as defined in Table 1 of Specification C270 does not necessarily mean that the mortar does not meet the requirements of Specification C270. The mortar may meet the alternative requirements of Table 2 (Property Specification Requirements) of Specification C270.  
4.5 The maleic acid method of analysis is not applicable for the analysis of mortar because it is greatly influenced by carbonation and does not provide for the determination of calcium.
SCOPE
1.1 This test method covers procedures for petrographic examination and chemical analysis of samples of masonry mortars. Based upon such examination and analysis, proportions of components in masonry mortars can be determined.
Note 1: This method is also applicable to hydraulic cement-based stucco and plaster. Some historic mortars may contain non-resolvable constituents that may interfere. However, significant information may be obtained by petrographic examinations.  
1.2 Interpretations and calculations of chemical results are dependent upon results of the petrographic examination. The use of the chemical results alone is contrary to the requirements of this test method.  
1.3 Procedures for sampling, petrographic examination, chemical analysis, and calculations of component proportions are given in the following sections:    
Section  
Sampling  
7  
Petrographic examination  
8  
Chemical analysis  
9  
Mortar proportion calculations  
10  
Report  
11  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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ASTM C1586-20(Guide)
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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Standard Specification for Packaged, Dry, Combined Materials for Surface Bonding Mortar

ABSTRACT
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SCOPE
1.1 This specification covers the materials, properties, and packaging of dry, combined materials for use as surface bonding mortar with concrete masonry units that have not been prefaced, coated, or painted.  
1.2 This specification does not cover design or application. Consult the manufacturer for specific recommendations.  
1.3 Appendix X1 of this specification contains the recommended tests for evaluation of surface bonded masonry assemblages used to establish design loads for the composite wall.  
1.4 Appendix X2 through Appendix X5 of this specification contain additional tests that may be performed on surface bonding mortar.  
1.5 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.  
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. This hazard statement applies only to Section 9 of this specification.  
1.7 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.

  • Technical specification
    13 pages
    English language
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  • Technical specification
    13 pages
    English language
    sale 15% off