ASTM C309-11

Standard Specification for Liquid Membrane-Forming Compounds for Curing Concrete

ABSTRACT
This specification covers liquid membrane-forming compounds suitable for application to concrete surfaces to reduce the loss of water during the early-hardening period. White-pigmented membrane-forming compounds serve the additional purpose of reducing the temperature rise in concrete exposed to radiation from the sun. The membrane-forming compounds covered by this specification are suitable for use as curing media for fresh concrete, and may also be used for further curing of concrete after removal of forms or after initial moist curing. Liquid membrane-forming compound types 1 and 1-D shall be clear or translucent. Type 2 liquid membrane-forming compounds shall consist of finely-divided white pigment and vehicle, ready-mixed for immediate use as is. Liquid membrane-forming compounds, when tested, shall restrict the loss of water not more than the requirements prescribed. Type 2 liquid membrane-forming compounds, when tested, shall exhibit a daylight reflectance of not less than 60 %. Liquid membrane-forming compounds, when tested, shall dry to touch in not more than 4 h.
SCOPE
1.1 This specification covers liquid membrane-forming compounds suitable for application to concrete surfaces to reduce the loss of water during the early-hardening period. White-pigmented membrane-forming compounds serve the additional purpose of reducing the temperature rise in concrete exposed to radiation from the sun. The membrane-forming compounds covered by this specification are suitable for use as curing media for fresh concrete, and may also be used for further curing of concrete after removal of forms or after initial moist curing.  
Note 1—This specification addresses only those properties listed in Sections 5 through 8. Membrane-forming compounds with special properties including better water retention, minimum solids content, resistance to ultraviolet radiation, acid and alkali resistance and non-interference with adhesives are described in Specification C1315.
Note 2—Solutions of silicate salts are chemically reactive in concrete rather than membrane-forming; therefore, they do not meet the intent of this specification.  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for informational purposes only.  
1.3 The following precautionary caveat pertains only to the test methods portion, Section 10, 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 and health practices and determine the applicability of regulatory limitations prior to use.  
1.4 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes shall not be considered as requirements of the standard.  
1.5 This is a performance specification. The allowable composition of products covered by this specification is limited by various local, regional, and national regulations. Issues related to air quality (solvent emission), worker exposure, and other hazards are not addressed here. It is the responsibility of the producers and users of these materials to comply with pertinent regulations.
WarningSome VOC exempt solvents used to meet the regulations are extremely flammable with low auto ignition temperatures and rapid evaporation rates. Consult the manufacturer's product information sheet for important application and safety information.

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 C309-07 - Standard Specification for Liquid Membrane-Forming Compounds for Curing Concrete
• Effective Date: 01-Jun-2011
• Replaced By: ASTM C309-19 - Standard Specification for Liquid Membrane-Forming Compounds for Curing Concrete
• Effective Date: 15-Jun-2019
• Referred By: ASTM C1433-20e1 - Standard Specification for Precast Reinforced Concrete Monolithic Box Sections for Culverts, Storm Drains, and Sewers
• Effective Date: 01-Jun-2011
• Referred By: ASTM C935-19 - Standard Specification for General Requirements for Prestressed Concrete Poles Statically Cast
• Effective Date: 01-Jun-2011
• Referred By: ASTM C1786-19 - Standard Specification for Segmental Precast Reinforced Concrete Box Sections for Culverts, Storm Drains, and Sewers Designed According to AASHTO LRFD
• Effective Date: 01-Jun-2011
• Referred By: ASTM C1577-20e1 - Standard Specification for Precast Reinforced Concrete Monolithic Box Sections for Culverts, Storm Drains, and Sewers Designed According to AASHTO LRFD
• Effective Date: 01-Jun-2011
• Referred By: ASTM C1504M-20 - Standard Specification for Manufacture of Precast Reinforced Concrete Three-Sided Structures for Culverts and Storm Drains (Metric)
• Effective Date: 01-Jun-2011
• Referred By: ASTM C915-79(2018) - Standard Specification for Precast Reinforced Concrete Crib Wall Members
• Effective Date: 01-Jun-2011
• Referred By: ASTM C76-22a - Standard Specification for Reinforced Concrete Culvert, Storm Drain, and Sewer Pipe
• Effective Date: 01-Jun-2011
• Referred By: ASTM C14M-20 - Standard Specification for Nonreinforced Concrete Sewer, Storm Drain, and Culvert Pipe (Metric)
• Effective Date: 01-Jun-2011
• Referred By: ASTM C14-20 - Standard Specification for Nonreinforced Concrete Sewer, Storm Drain, and Culvert Pipe
• Effective Date: 01-Jun-2011
• Referred By: ASTM F2551-09(2023) - Standard Practice for Installing a Protective Cementitious Liner System in Sanitary Sewer Manholes
• Effective Date: 01-Jun-2011
• Referred By: ASTM C506-22a - Standard Specification for Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe
• Effective Date: 01-Jun-2011
• Referred By: ASTM C1932-23 - Standard Specification for Manufacture of Reinforced Precast Concrete End Sections for Pipe
• Effective Date: 01-Jun-2011
• Referred By: ASTM C1504-20 - Standard Specification for Manufacture of Precast Reinforced Concrete Three-Sided Structures for Culverts and Storm Drains
• 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: C309 −11
Standard Specification for
1
Liquid Membrane-Forming Compounds for Curing Concrete
This standard is issued under the fixed designation C309; 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 Department of Defense.
1. Scope* related to air quality (solvent emission), worker exposure, and
other hazards are not addressed here. It is the responsibility of
1.1 This specification covers liquid membrane-forming
the producers and users of these materials to comply with
compounds suitable for application to concrete surfaces to
pertinent regulations.
reduce the loss of water during the early-hardening period.
Warning—Some VOC exempt solvents used to meet the
White-pigmented membrane-forming compounds serve the
regulations are extremely flammable with low auto ignition
additional purpose of reducing the temperature rise in concrete
temperatures and rapid evaporation rates. Consult the manu-
exposed to radiation from the sun. The membrane-forming
facturer’s product information sheet for important application
compounds covered by this specification are suitable for use as
and safety information.
curing media for fresh concrete, and may also be used for
further curing of concrete after removal of forms or after initial
2. Referenced Documents
moist curing.
2
2.1 ASTM Standards:
NOTE 1—This specification addresses only those properties listed in
C156 Test Method forWater Loss [from a Mortar Specimen]
Sections 5 through 8. Membrane-forming compounds with special prop-
Through Liquid Membrane-Forming Curing Compounds
erties including better water retention, minimum solids content, resistance
for Concrete
to ultraviolet radiation, acid and alkali resistance and non-interference
with adhesives are described in Specification C1315.
C1315 Specification for Liquid Membrane-Forming Com-
NOTE 2—Solutions of silicate salts are chemically reactive in concrete
pounds Having Special Properties for Curing and Sealing
rather than membrane-forming; therefore, they do not meet the intent of
Concrete
this specification.
D869 TestMethodforEvaluatingDegreeofSettlingofPaint
1.2 The values stated in SI units are to be regarded as the
D883 Terminology Relating to Plastics
standard. The values given in parentheses are provided for
D1309 Test Method for Settling Properties of Traffic Paints
informational purposes only.
During Storage
1.3 The following precautionary caveat pertains only to the
D2369 Test Method for Volatile Content of Coatings
test methods portion, Section 10, of this specification: This E1347 Test Method for Color and Color-Difference Mea-
standard does not purport to address all of the safety concerns,
surement by Tristimulus Colorimetry
if any, associated with its use. It is the responsibility of the user
3. Classification
of this standard to establish appropriate safety and health
practices and determine the applicability of regulatory limita-
3.1 The following types of liquid membrane-forming com-
tions prior to use.
pounds are included:
3.1.1 Type 1—Clear or translucent without dye,
1.4 The text of this standard references notes and footnotes
3.1.2 Type 1-D—Clear or translucent with fugitive dye, and
which provide explanatory material. These notes and footnotes
3.1.3 Type 2—White pigmented.
shall not be considered as requirements of the standard.
3.2 The solids dissolved in the vehicle shall be one of the
1.5 This is a performance specification. The allowable
following classes:
compositionofproductscoveredbythisspecificationislimited
3.2.1 Class A—No restrictions,
by various local, regional, and national regulations. Issues
3.2.2 Class B—Must be a resin as defined in Terminology
D883.
1
This specification is under the jurisdiction of ASTM Committee C09 on
Concrete and Concrete Aggregatesand is the direct responsibility of Subcommittee
2
C09.22 on Materials Applied to New Concrete Surfaces. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved June 1, 2011. Published June 2011. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1953. Last previous edition approved in 2007 as C309–07. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/C0309-11. 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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C309 − 11
NOTE 3—Permanen
...

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:C309–07 Designation: C309 – 11
Standard Specification for
1
Liquid Membrane-Forming Compounds for Curing Concrete
This standard is issued under the fixed designation C309; 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 Department of Defense.
1. Scope*
1.1 This specification covers liquid membrane-forming compounds suitable for application to concrete surfaces to reduce the
loss of water during the early-hardening period. White-pigmented membrane-forming compounds serve the additional purpose of
reducing the temperature rise in concrete exposed to radiation from the sun. The membrane-forming compounds covered by this
specification are suitable for use as curing media for fresh concrete, and may also be used for further curing of concrete after
removal of forms or after initial moist curing.
NOTE 1—This specification addresses only those properties listed in Sections 5 through 8. Membrane-forming compounds with special properties
including better water retention, minimum solids content, resistance to ultraviolet radiation, acid and alkali resistance and non-interference with adhesives
are described in Specification C1315.
NOTE 2—Solutions of silicate salts are chemically reactive in concrete rather than membrane-forming; therefore, they do not meet the intent of this
specification.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for
informational purposes only.
1.3 The following precautionary caveat pertains only to the test methods portion, Section 10, 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 and health practices and determine the applicability of regulatory limitations prior to use.
1.4 The text of this standard references notes and footnotes which provide explanatory material.These notes and footnotes shall
not be considered as requirements of the standard.
1.5This1.5 This is a performance specification. The allowable composition of products covered by this specification is limited
by various local, regional, and national regulations. Issues related to air quality (solvent emission), worker exposure, and other
hazards are not addressed here. It is the responsibility of the producers and users of these materials to comply with pertinent
regulations.
Warning—Some VOC exempt solvents used to meet the regulations are extremely flammable with low auto ignition
temperatures and rapid evaporation rates. Consult the manufacturer’s product information sheet for important application and
safety information.
2. Referenced Documents
2
2.1 ASTM Standards:
C156 Test Method for Water Loss [from a Mortar Specimen] Through Liquid Membrane-Forming Curing Compounds for
Concrete
C1315 Specification for Liquid Membrane-Forming Compounds Having Special Properties for Curing and Sealing Concrete
D869 Test Method for Evaluating Degree of Settling of Paint
D883 Terminology Relating to Plastics
D1309 Test Method for Settling Properties of Traffic Paints During Storage
D2369 Test Method for Volatile Content of Coatings
E1347 Test Method for Color and Color-Difference Measurement by Tristimulus Colorimetry
1
This specification is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C09.22 on
Materials Applied to New Concrete Surfaces.
Current edition approved June 1, 2007.2011. Published July 2007.June 2011. Originally approved in 1953. Last previous edition approved in 20062007 as
C309–06.C309–07. DOI: 10.1520/C0309-07.10.1520/C0309-11.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. 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.
1

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C309 – 11
3. Classification
3.1 The following types of liquid membrane
...