ASTM C1384-18e1
(Specification)Standard Specification for Admixtures for Masonry Mortars
Standard Specification for Admixtures for Masonry Mortars
ABSTRACT
This specification pertains to admixtures for masonry mortars. Admixtures are substances other than the prescribed materials of water, aggregate, and cementitious materials that are used to improve one or more of the recognized desirable properties of conventional masonry mortar. Admixtures are classified by their effect on the performance characteristics of conventional masonry mortars. Admixed mortars are classified by their modified properties, as compared to a reference mortar. The following classifications are recognized: bond enhancer, workability enhancer, set accelerator, set retarder, and water repellent. The materials to be used include Portland cement, hydraulic cement, blended hydraulic cement, masonry cement, mortar cement, lime, and sand. Different test methods shall be implemented in order to determine the following properties: soluble chloride content, compressive strength, water retention, air content of plastic mortar, board life, time of setting, flexural bond strength, and rate of water absorption.
SCOPE
1.1 This specification pertains to admixtures for masonry mortars. Admixtures are substances other than Specification C270 prescribed materials of water, aggregate, and cementitious materials that are used to improve one or more of the recognized desirable properties of conventional masonry mortar.
1.2 This specification does not cover coloring pigments.
Note 1: Information on coloring pigments can be found in Specification C979/C979M.
1.3 This specification does not cover additives that are added to the cementitious materials during the manufacture of the cementitious materials.
1.4 Acceptance of an admixture is based on its performance in an admixed mortar. Acceptance of the admixed masonry mortar is based on attainment of performance either equivalent to that required for conventional mortar or improved performance of one or more indicated properties, while maintaining required performance levels for other properties.
1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
Note 2: The testing laboratory performing the test methods referenced in this specification should be evaluated in accordance with Practice C1093.
1.6 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
Relations
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.
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Designation:C1384 −18
Standard Specification for
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Admixtures for Masonry Mortars
This standard is issued under the fixed designation C1384; 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.
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ε NOTE—Annex reference corrections for Test Method C780 were editorially made in December 2018.
1. Scope* 2. Referenced Documents
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1.1 This specification pertains to admixtures for masonry 2.1 ASTM Standards:
C144 Specification for Aggregate for Masonry Mortar
mortars. Admixtures are substances other than Specification
C270 Specification for Mortar for Unit Masonry
C270 prescribed materials of water, aggregate, and cementi-
C305 Practice for Mechanical Mixing of Hydraulic Cement
tious materials that are used to improve one or more of the
Pastes and Mortars of Plastic Consistency
recognized desirable properties of conventional masonry mor-
C403/C403M Test Method for Time of Setting of Concrete
tar.
Mixtures by Penetration Resistance
1.2 This specification does not cover coloring pigments.
C723 Practice for Chemical-Resistant Resin Grouts for
Brick or Tile
NOTE 1—Information on coloring pigments can be found in Specifica-
C780 Test Method for Preconstruction and Construction
tion C979/C979M.
Evaluation of Mortars for Plain and Reinforced Unit
1.3 This specification does not cover additives that are
Masonry
added to the cementitious materials during the manufacture of
C979/C979M Specification for Pigments for Integrally Col-
the cementitious materials.
ored Concrete
C1072 Test Methods for Measurement of Masonry Flexural
1.4 Acceptance of an admixture is based on its performance
Bond Strength
in an admixed mortar. Acceptance of the admixed masonry
C1093 Practice for Accreditation of Testing Agencies for
mortar is based on attainment of performance either equivalent
Masonry
to that required for conventional mortar or improved perfor-
C1152/C1152M Test Method for Acid-Soluble Chloride in
mance of one or more indicated properties, while maintaining
Mortar and Concrete
required performance levels for other properties.
C1180 Terminology of Mortar and Grout for Unit Masonry
1.5 The values stated in SI units are to be regarded as the C1218/C1218M Test Method for Water-Soluble Chloride in
Mortar and Concrete
standard. The values given in parentheses are for information
C1403 Test Method for Rate of Water Absorption of Ma-
only.
sonry Mortars
NOTE 2—The testing laboratory performing the test methods referenced
C1437 Test Method for Flow of Hydraulic Cement Mortar
in this specification should be evaluated in accordance with Practice
C1093.
3. Terminology
1.6 This international standard was developed in accor-
dance with internationally recognized principles on standard-
3.1 Terminology defined in Terminology C1180 shall apply
ization established in the Decision on Principles for the
for this specification.
Development of International Standards, Guides and Recom-
3.2 Definitions of Terms Specific to This Standard:
mendations issued by the World Trade Organization Technical
3.2.1 admixed mortar, n—masonry mortar that deviates
Barriers to Trade (TBT) Committee.
from those combinations of materials recognized by Specifi-
cation C270 in that it also contains an admixture.
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This specification is under the jurisdiction of ASTM Committee C12 on
Mortars and Grouts for Unit Masonry and is the direct responsibility of Subcom-
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mittee C12.03 on Specifications for Mortars. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved June 1, 2018. Published August 2018. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1998. Last previous approved in 2017 as edition C1384 – 17. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/C1384-18E01. 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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C1384−18
corrosion potential of masonry mortars toward embedded and attached
3.2.2 admixture, n—substance other than the Specification
materials. Nonetheless, the admixture shall not be offered for sale if the
C270 prescribed materials of water, aggregate, and cementi-
manufacturer has evidence that the admixture does react adversely with
tiousmaterialsthatisaddedtoamasonrymorta
...
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