Standard Specification for Admixtures for Masonry Mortars

SCOPE
1.1 This specification pertains to admixtures for masonry mortars. Admixtures are substances other than Specification C 270 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 C 979.
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 C 1093.

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09-Aug-2002
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ASTM C1384-02a - Standard Specification for Admixtures for Masonry Mortars
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.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 latest information.
Designation: C 1384 – 02a
Standard Specification for
1
Admixtures for Masonry Mortars
This standard is issued under the fixed designation C 1384; 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 * C 305 Practice for Mechanical Mixing of Hydraulic Cement
2
Pastes and Mortars of Plastic Consistency
1.1 This specification pertains to admixtures for masonry
C 403 Test Method for Time of Setting of Concrete Mix-
mortars. Admixtures are substances other than Specification
4
tures by Penetration Resistance
C 270 prescribed materials of water, aggregate, and cementi-
2
C 595 Specification for Blended Hydraulic Cements
tious materials that are used to improve one or more of the
C 723 Practice for Chemical-Resistant Resin Grouts for
recognized desirable properties of conventional masonry mor-
3
Brick or Tile
tar.
2
C 778 Specification for Standard Sand
1.2 This specification does not cover coloring pigments.
C 780 Test Method for Preconstruction and Construction
NOTE 1—Information on coloring pigments can be found in Specifica-
Evaluation of Mortars for Plain and Reinforced Unit
tion C 979.
3
Masonry
1.3 This specification does not cover additives that are
C 979 Specification for Pigments for Integrally Colored
4
added to the cementitious materials during the manufacture of
Concrete
the cementitious materials.
C 1093 Practice for Accreditation of Testing Agencies for
3
1.4 Acceptance of an admixture is based on its performance
Unit Masonry
in an admixed mortar. Acceptance of the admixed masonry
C 1152 Test Method for Acid-Soluble Chloride in Mortar
4
mortar is based on attainment of performance either equivalent
and Concrete
2
to that required for conventional mortar or improved perfor-
C 1157 Performance Specification for Hydraulic Cement
mance of one or more indicated properties, while maintaining
C 1218 Test Method for Water-Soluble Chloride in Mortar
4
required performance levels for other properties.
and Concrete
2
1.5 The values stated in SI units are to be regarded as the
C 1329 Specification for Mortar Cement
standard. The values given in parentheses are for information
C 1357 Test Method for Evaluating Masonry Bond
3
only.
Strength
C 1403 Test Method for Rate of Water Absorption of
NOTE 2—The testing laboratory performing the test methods referenced
3
Masonry Mortars
in this specification should be evaluated in accordance with Practice
2
C 1093. C 1437 Test Method for Flow of Hydraulic Cement Mortar
2. Referenced Documents 3. Terminology
2.1 ASTM Standards: 3.1 Definitions of Terms Specific to This Standard:
2
C 91 Specification for Masonry Cement 3.1.1 admixed mortar, n—masonry mortar that deviates
3
C 144 Specification for Aggregate for Masonry Mortar from those combinations of materials recognized by Specifi-
2
C 150 Specification for Portland Cement cation C 270 in that it also contains an admixture.
C 207 Specification for Hydrated Lime for Masonry Pur- 3.1.2 admixture, n—substance other than the Specification
2
poses C 270 prescribed materials of water, aggregate, and cementi-
3
C 270 Specification for Mortar for Unit Masonry tious materials that is added to a masonry mortar as an
ingredient to improve one or more chemical or physical
properties of the conventional masonry mortar.
1
This specification is under the jurisdiction of ASTM Committee C12 on
3.1.3 bond enhancer, n—admixture used to increase the
Mortars and Grouts for Unit Masonry and is the direct responsibility of Subcom-
bond strength between the masonry mortar and the masonry
mittee C12.09 on Modified Mortars.
unit.
Current edition approved August 10, 2002. Published September 2002. Origi-
nally published as C 1384 – 98. Last previous edition C 1384 – 02.
2
Annual Book of ASTM Standards, Vol 04.01.
3 4
Annual Book of ASTM Standards, Vol 04.05. Annual Book of ASTM Standards,Vol 04.02.
*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

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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 latest information.
C 1384 – 02a
3.1.4 reference mortar, n—mortar of the same composition 5.3.1 Sands used for flexural bond strength and rate of water
as an admixed mortar except that the reference mortar does not
absorption tests shall be a blend of equal parts by weight of
include the admixture and may contain a different amount of
graded standard sand and standard 20-30 sa
...

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