ASTM C1403-22a
(Test Method)Standard Test Method for Rate of Water Absorption of Masonry Mortars
Standard Test Method for Rate of Water Absorption of Masonry Mortars
SIGNIFICANCE AND USE
4.1 This test method provides a laboratory procedure for determining the relative water absorption properties over time of mortars used for masonry construction. Because the specimens are made under laboratory conditions and do not take into account the effect of the masonry substrate or field mixing procedures, this method is not intended for field use. Data generated from this test method may be useful for determining the relative effectiveness of water repellent admixtures or the effect of other admixtures or mortar components on the water repellency of a mortar. However, use caution in interpreting the results. While the resistance of masonry to water penetration may be related to the water absorption of the mortar, it also depends on other factors, such as the workmanship, extent of bond, and the properties of the masonry units and mortar.
Note 1: This test method is specified in Specification C1384 for demonstrating compliance of mortar admixtures classified as Water Repellent. In this compliance testing, the admixed mortar is compared to a reference mortar made with the same mortar materials except that it does not include the admixture. For quality control testing of water repellent preblended dry mortar mixes, the reference mortar is not typically available since the water repellent additive is added during the manufacturing process prior to bagging the final product. In these cases, the procedure in Annex A1 can be used to determine the relative resistance of the mortar to absorption by capillary uptake.
SCOPE
1.1 This test method covers a standardized laboratory procedure for determining the relative water absorption by capillary uptake (wicking) characteristics of masonry mortars. This test method is not applicable for determining the effectiveness of water repellent coatings.
1.2 The text of this standard refers to 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.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3.1 Inch-pound units are given in parentheses for temperature specification and are for information only.
1.4 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.
1.5 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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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: C1403 − 22a
Standard Test Method for
1
Rate of Water Absorption of Masonry Mortars
This standard is issued under the fixed designation C1403; 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* of Hydraulic Cement
C270 Specification for Mortar for Unit Masonry
1.1 This test method covers a standardized laboratory pro-
C305 Practice for Mechanical Mixing of Hydraulic Cement
cedure for determining the relative water absorption by capil-
Pastes and Mortars of Plastic Consistency
lary uptake (wicking) characteristics of masonry mortars. This
C511 Specification for Mixing Rooms, Moist Cabinets,
test method is not applicable for determining the effectiveness
Moist Rooms, and Water Storage Tanks Used in the
of water repellent coatings.
Testing of Hydraulic Cements and Concretes
1.2 The text of this standard refers to notes and footnotes
C778 Specification for Standard Sand
that provide explanatory material. These notes and footnotes
C1180 Terminology of Mortar and Grout for Unit Masonry
(excluding those in tables and figures) shall not be considered
C1384 Specification for Admixtures for Masonry Mortars
as requirements of the standard.
C1437 Test Method for Flow of Hydraulic Cement Mortar
1.3 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this 3. Terminology
standard.
3.1 Definitions—For definitions of terms used in this test
1.3.1 Inch-poundunitsaregiveninparenthesesfortempera-
method, refer to Terminology C1180.
ture specification and are for information only.
1.4 This standard does not purport to address all of the
4. Significance and Use
safety concerns, if any, associated with its use. It is the
4.1 This test method provides a laboratory procedure for
responsibility of the user of this standard to establish appro-
determining the relative water absorption properties over time
priate safety, health, and environmental practices and deter-
of mortars used for masonry construction. Because the speci-
mine the applicability of regulatory limitations prior to use.
mensaremadeunderlaboratoryconditionsanddonottakeinto
1.5 This international standard was developed in accor-
account the effect of the masonry substrate or field mixing
dance with internationally recognized principles on standard-
procedures, this method is not intended for field use. Data
ization established in the Decision on Principles for the
generated from this test method may be useful for determining
Development of International Standards, Guides and Recom-
the relative effectiveness of water repellent admixtures or the
mendations issued by the World Trade Organization Technical
effect of other admixtures or mortar components on the water
Barriers to Trade (TBT) Committee.
repellencyofamortar.However,usecautionininterpretingthe
results. While the resistance of masonry to water penetration
2. Referenced Documents
may be related to the water absorption of the mortar, it also
2
2.1 ASTM Standards:
depends on other factors, such as the workmanship, extent of
C109/C109M Test Method for Compressive Strength of
bond, and the properties of the masonry units and mortar.
Hydraulic Cement Mortars (Using 2-in. or [50 mm] Cube
Specimens) NOTE 1—This test method is specified in Specification C1384 for
demonstrating compliance of mortar admixtures classified as Water
C230/C230M Specification for Flow Table for Use in Tests
Repellent. In this compliance testing, the admixed mortar is compared to
areferencemortarmadewiththesamemortarmaterialsexceptthatitdoes
not include the admixture. For quality control testing of water repellent
1
This test method is under the jurisdiction ofASTM Committee C12 on Mortars
preblended dry mortar mixes, the reference mortar is not typically
and Grouts for Unit Masonry and is the direct responsibility of Subcommittee
available since the water repellent additive is added during the manufac-
C12.02 on Research and Methods of Test.
turing process prior to bagging the final product. In these cases, the
Current edition approved Dec. 1, 2022. Published December 2022. Originally
procedure in AnnexA1 can be used to determine the relative resistance of
approved in 1999. Last previous edition approved in 2022 as C1403 – 22. DOI:
the mortar to absorption by capillary uptake.
10.1520/C1403-22A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For
...
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: C1403 − 22 C1403 − 22a
Standard Test Method for
1
Rate of Water Absorption of Masonry Mortars
This standard is issued under the fixed designation C1403; 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 test method covers a standardized laboratory procedure for determining the relative water absorption by capillary uptake
(wicking) characteristics of masonry mortars. This test method is not applicable for determining the effectiveness of water repellent
coatings.
1.2 The text of this standard refers to 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.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3.1 Inch-pound units are given in parentheses for temperature specification and are for information only.
1.4 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.
1.5 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:
C109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50 mm] Cube Specimens)
C230/C230M Specification for Flow Table for Use in Tests of Hydraulic Cement
C270 Specification for Mortar for Unit Masonry
C305 Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency
C511 Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic
Cements and Concretes
C778 Specification for Standard Sand
C1180 Terminology of Mortar and Grout for Unit Masonry
C1384 Specification for Admixtures for Masonry Mortars
C1437 Test Method for Flow of Hydraulic Cement Mortar
1
This test method is under the jurisdiction of ASTM Committee C12 on Mortars and Grouts for Unit Masonry and is the direct responsibility of Subcommittee C12.02
on Research and Methods of Test.
Current edition approved Aug. 1, 2022Dec. 1, 2022. Published August 2022December 2022. Originally approved in 1999. Last previous edition approved in 20152022
as C1403 – 15.C1403 – 22. DOI: 10.1520/C1403-22.10.1520/C1403-22A.
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
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C1403 − 22a
3. Terminology
3.1 Definitions—For definitions of terms used in this test method, refer to Terminology C1180.
4. Significance and Use
4.1 This test method provides a laboratory procedure for determining the relative water absorption properties over time of mortars
used for masonry construction. Because the specimens are made under laboratory conditions and do not take into account the effect
of the masonry substrate or field mixing procedures, this method is not intended for field use. Data generated from this test method
may be useful for determining the relative effectiveness of water repellent admixtures or the effect of other admixtures or mortar
components on the water repellency of a mortar. However, use caution in interpreting the results. While the resistance of masonry
to water penetration may be related to the water absorption of the mortar, it also depends on other factors, such as the workmanship,
extent of bond, and the properties of the masonry units and mortar.
NOTE 1—This test method is specified in Specification C1384 for demonstrating compliance of mortar a
...
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