ASTM C156-11

Standard Test Method for Water Loss [from a Mortar Specimen] Through Liquid Membrane-Forming Curing Compounds for Concrete

SIGNIFICANCE AND USE
The moisture retaining ability of a product as determined by this test method is used to assess the suitability of materials for contributing to an appropriate curing environment for concrete. The laboratory test method is used both in formulating and in specifying or qualifying curing products. This test method gives the user a measure of the ability of tested curing materials to impede the escape of moisture from a hydraulic cement mortar. Since it is desirable to retain moisture in fresh concrete to promote the hydration process, failure of the product to minimize the escape of moisture may lead to loss of strength, cracking, shrinkage, or low abrasion resistance of the hardened concrete, or a combination thereof.
Many factors affect the laboratory test results. Test results obtained may be highly variable as indicated by the precision statement. Critical factors include the precision of the control of the temperature, humidity and air circulation in the curing cabinet, preparation and sealing of the mortar specimens, the age and surface condition of the mortar specimen when the curing product is applied, and the uniformity and quantity of application of the curing membrane.
SCOPE
1.1 This test method covers laboratory determination of the efficiency of liquid membrane-forming compounds for curing concrete, as measured by their ability to reduce moisture loss from mortar specimens during the early hardening period.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.
1.3 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 and health practices and determine the applicability of regulatory limitations prior to use.(Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.)

General Information

• Status: Historical
• Publication Date: 31-May-2011
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.22 - Materials Applied to New Concrete Surfaces

Relations

• Replaces: ASTM C156-09a - Standard Test Method for Water Loss [from a Mortar Specimen] Through Liquid Membrane-Forming Curing Compounds for Concrete
• Effective Date: 01-Jun-2011
• Referred By: ASTM C309-19 - Standard Specification for Liquid Membrane-Forming Compounds for Curing Concrete
• Effective Date: 01-Jun-2011
• Referred By: ASTM C171-20 - Standard Specification for Sheet Materials for Curing Concrete
• Effective Date: 01-Jun-2011
• Referred By: ASTM C1315-19 - Standard Specification for Liquid Membrane-Forming Compounds Having Special Properties for Curing and Sealing Concrete
• Effective Date: 01-Jun-2011

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C156 − 11
Standard Test Method for
Water Loss [from a Mortar Specimen] Through Liquid
1
Membrane-Forming Curing Compounds for Concrete
This standard is issued under the fixed designation C156; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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. Scope* of Hydraulic Cement
C305Practice for Mechanical Mixing of Hydraulic Cement
1.1 This test method covers laboratory determination of the
Pastes and Mortars of Plastic Consistency
efficiency of liquid membrane-forming compounds for curing
C778Specification for Standard Sand
concrete, as measured by their ability to reduce moisture loss
D1475Test Method For Density of Liquid Coatings, Inks,
from mortar specimens during the early hardening period.
and Related Products
1.2 The values stated in SI units are to be regarded as
D1653Test Methods for Water Vapor Transmission of Or-
standard. The values given in parentheses are mathematical
ganic Coating Films
conversions to inch-pound units that are provided for informa-
D2369Test Method for Volatile Content of Coatings
tion only and are not considered standard.
E178Practice for Dealing With Outlying Observations
1.3 This standard does not purport to address all of the
3. Significance and Use
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3.1 The moisture retaining ability of a product as deter-
priate safety and health practices and determine the applica-
mined by this test method is used to assess the suitability of
bility of regulatory limitations prior to use.(Warning—Fresh
materialsforcontributingtoanappropriatecuringenvironment
hydraulic cementitious mixtures are caustic and may cause
for concrete. The laboratory test method is used both in
2
chemical burns to skin and tissue upon prolonged exposure.)
formulating and in specifying or qualifying curing products.
1.4 This international standard was developed in accor-
This test method gives the user a measure of the ability of
dance with internationally recognized principles on standard-
tested curing materials to impede the escape of moisture from
ization established in the Decision on Principles for the
a hydraulic cement mortar. Since it is desirable to retain
Development of International Standards, Guides and Recom-
moisture in fresh concrete to promote the hydration process,
mendations issued by the World Trade Organization Technical
failure of the product to minimize the escape of moisture may
Barriers to Trade (TBT) Committee.
lead to loss of strength, cracking, shrinkage, or low abrasion
resistance of the hardened concrete, or a combination thereof.
2. Referenced Documents
3.2 Many factors affect the laboratory test results. Test
3
2.1 ASTM Standards:
results obtained may be highly variable as indicated by the
C87Test Method for Effect of Organic Impurities in Fine
precisionstatement.Criticalfactorsincludetheprecisionofthe
Aggregate on Strength of Mortar
control of the temperature, humidity and air circulation in the
C150Specification for Portland Cement
curing cabinet, preparation and sealing of the mortar
C230/C230MSpecification for Flow Table for Use in Tests
specimens, the age and surface condition of the mortar speci-
menwhenthecuringproductisapplied,andtheuniformityand
quantity of application of the curing membrane.
1
This test method is under the jurisdiction of ASTM Committee C09 on
Concrete and ConcreteAggregatesand is the direct responsibility of Subcommittee
C09.22 on Materials Applied to New Concrete Surfaces. 4. Apparatus
Current edition approved June 1, 2011. Published June 2011. Originally
4.1 Mechanical Mortar Mixer, as described in Practice
approved in 1940. Last previous edition approved in 2009 as C156–09a. DOI:
10.1520/C0156-11. C305, or a larger size mixture operating on the same principle.
2
Section on Safety Precautions, Manual of Aggregate and Concrete Testing,
4.2 Flow Table, as described in Specification C230/C230M.
Annual Book of ASTM Standards, Vol 04.02.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.3 Molds shall be made of metal, glass, hard rubber, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
plastic, and shall be watertight and rigidly constructed to
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. preventdistortionduringmoldingofthespecimensorhandling
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM Internation
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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:C156–09a Designation:C156–11
Standard Test Method for
Water Loss [from a Mortar Specimen] Through Liquid
1
Membrane-Forming Curing Compounds for Concrete
This standard is issued under the fixed designation C156; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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 Department of Defense.
1. Scope*
1.1 This test method covers laboratory determination of the efficiency of liquid membrane-forming compounds for curing
concrete, as measured by their ability to reduce moisture loss from mortar specimens during the early hardening period.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions
to inch-pound units that are provided for information only and are not considered standard.
1.3 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 and health practices and determine the applicability of regulatory
limitations prior to use.(Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and
2
tissue upon prolonged exposure.)
2. Referenced Documents
3
2.1 ASTM Standards:
C87 Test Method for Effect of Organic Impurities in Fine Aggregate on Strength of Mortar
C150 Specification for Portland Cement
C230/C230M Specification for Flow Table for Use in Tests of Hydraulic Cement
C305 Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency
C778 Specification for Sand
D1475 Test Method For Density of Liquid Coatings, Inks, and Related Products
D1653 Test Methods for Water Vapor Transmission of Organic Coating Films
D2369 Test Method for Volatile Content of Coatings
E178 Practice for Dealing With Outlying Observations
3. Significance and Use
3.1 The moisture retaining ability of a product as determined by this test method is used to assess the suitability of materials
for contributing to an appropriate curing environment for concrete. The laboratory test method is used both in formulating and in
specifying or qualifying curing products. This test method gives the user a measure of the ability of tested curing materials to
impedetheescapeofmoisturefromahydrauliccementmortar.Sinceitisdesirabletoretainmoistureinfreshconcretetopromote
the hydration process, failure of the product to minimize the escape of moisture may lead to loss of strength, cracking, shrinkage,
or low abrasion resistance of the hardened concrete, or a combination thereof.
3.2 Many factors affect the laboratory test results. Test results obtained may be highly variable as indicated by the precision
statement.Criticalfactorsincludetheprecisionofthecontrolofthetemperature,humidityandaircirculationinthecuringcabinet,
preparation and sealing of the mortar specimens, the age and surface condition of the mortar specimen when the curing product
is applied, and the uniformity and quantity of application of the curing membrane.
4. Apparatus
4.1 Mechanical Mortar Mixer, as described in Practice C305, or a larger size mixture operating on the same principle.
1
This test method is under the jurisdiction ofASTM Committee C09 on Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee C09.22 on
Materials Applied to New Concrete Surfaces.
Current edition approved Dec. 15, 2009.June 1, 2011. Published January 2010.June 2011. Originally approved in 1940. Last previous edition approved in 2009 as
C156–09.C156–09a. DOI: 10.1520/C0156-09a.10.1520/C0156-11.
2
Section on Safety Precautions, Manual of Aggregate and Concrete Testing, Annual Book of ASTM Standards, Vol 04.02.
3
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,[e-mail]ards
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

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C156–11
4.2 Flow Table, as described in Specification C230/C230M.
4.3 Molds shall be made of metal, glass, hard ru
...