ASTM C796/C796M-12
(Test Method)Standard Test Method for Foaming Agents for Use in Producing Cellular Concrete Using Preformed Foam
Standard Test Method for Foaming Agents for Use in Producing Cellular Concrete Using Preformed Foam
SIGNIFICANCE AND USE
This test method is used to develop data for comparison or compliance with the requirements of Specification C869.
SCOPE
1.1 This test method furnishes a way of measuring, in the laboratory, the performance of a foaming chemical to be used in producing foam (air cells) for making cellular concrete.
1.2 This test method includes the following:
1.2.1 Manufacture of laboratory quantities of cellular concrete.
1.2.2 Determination of the air content of the freshly prepared cellular concrete and of the hardened concrete after handling in conventional machinery.
1.2.3 Determination of the following properties of the hardened concrete: compressive strength, tensile splitting strength, density, and water absorption. It may not be necessary to study all of the above properties in all cases, depending on the proposed use of the material.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
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 and health practices and determine the applicability of regulatory limitations prior to use.
1.5 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.
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Designation: C796/C796M − 12
Standard Test Method for
Foaming Agents for Use in Producing Cellular Concrete
1
Using Preformed Foam
This standard is issued under the fixed designation C796/C796M; 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* 2. Referenced Documents
2
1.1 This test method furnishes a way of measuring, in the 2.1 ASTM Standards:
laboratory, the performance of a foaming chemical to be used C88Test Method for Soundness of Aggregates by Use of
in producing foam (air cells) for making cellular concrete. Sodium Sulfate or Magnesium Sulfate
C150Specification for Portland Cement
1.2 This test method includes the following:
C192/C192MPracticeforMakingandCuringConcreteTest
1.2.1 Manufacture of laboratory quantities of cellular con-
Specimens in the Laboratory
crete.
C495Test Method for Compressive Strength of Lightweight
1.2.2 Determination of the air content of the freshly pre-
Insulating Concrete
pared cellular concrete and of the hardened concrete after
C496/C496MTest Method for Splitting Tensile Strength of
handling in conventional machinery.
Cylindrical Concrete Specimens
1.2.3 Determination of the following properties of the
C511Specification for Mixing Rooms, Moist Cabinets,
hardened concrete: compressive strength, tensile splitting
Moist Rooms, and Water Storage Tanks Used in the
strength,density,andwaterabsorption.Itmaynotbenecessary
Testing of Hydraulic Cements and Concretes
to study all of the above properties in all cases, depending on
C802Practice for Conducting an Interlaboratory Test Pro-
the proposed use of the material.
gram to Determine the Precision of Test Methods for
1.3 The values stated in either SI units or inch-pound units
Construction Materials
are to be regarded separately as standard. The values stated in
C869Specification for Foaming Agents Used in Making
each system may not be exact equivalents; therefore, each
Preformed Foam for Cellular Concrete
system shall be used independently of the other. Combining
values from the two systems may result in non-conformance 3. Terminology
with the standard.
3.1 Definitions:
1.4 This standard does not purport to address all of the
3.1.1 cellular concrete—a lightweight product consisting of
safety concerns, if any, associated with its use. It is the
portland cement, cement-silica, cement-pozzolan, lime-
responsibility of the user of this standard to establish appro-
pozzolan, or lime-silica pastes, or pastes containing blends of
priate safety and health practices and determine the applica-
these ingredients and having a homogeneous void or cell
bility of regulatory limitations prior to use.
structure, attained with gas-forming chemicals or foaming
1.5 The text of this standard references notes and footnotes
agents (for cellular concretes containing binder ingredients
which provide explanatory material.These notes and footnotes
other than, or in addition to portland cement, autoclave curing
3
(excluding those in tables and figures) shall not be considered
is usually employed). In cellular concrete the density control
as requirements of the standard.
is achieved by substituting macroscopic air cells for all or part
1 2
This test method is under the jurisdiction of ASTM Committee C09 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Concrete and ConcreteAggregatesand is the direct responsibility of Subcommittee contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
C09.23 on Chemical Admixtures. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved April 1, 2012. Published May 2012. Originally the ASTM website.
3
approved in 1974. Last previous edition approved in 1997 as C796–04. DOI: ACICommittee116,“CementandConcreteTerminology,”AmericanConcrete
10.1520/C0796_C0796M-12. Institute, Publication SP-19, 1967, p. 144.
*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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C796/C796M − 12
of the fine aggregate. Normal-weight coarse aggregate is 6.3 Pump—Thepumpshallbeanopenorclosedthroat-type
usually not used but lightweight aggregates, both fine and pumpandshallberunat27to66rad/s[260to630r/min].The
3 3
coarse, are often utilized in cellular concrete. pump shall be equipped with a 0.15-m [4.5-ft ] “feed”
reservoir and 15 m [50 ft] of open-end 25-mm [1-in.] inside
3.2 Symbol
...
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:C796–04 Designation:C796/C796M–12
Standard Test Method for
Foaming Agents for Use in Producing Cellular Concrete
1
Using Preformed Foam
This standard is issued under the fixed designation C796/C796M; 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 test method furnishes a way of measuring, in the laboratory, the performance of a foaming chemical to be used in
producing foam (air cells) for making cellular concrete.
1.2 This test method includes the following:
1.2.1 Manufacture of laboratory quantities of cellular concrete.
1.2.2 Determination of the air content of the freshly prepared cellular concrete and of the hardened concrete after handling in
conventional machinery.
1.2.3 Determination of the following properties of the hardened concrete: compressive strength, tensile splitting strength,
density, and water absorption. It may not be necessary to study all of the above properties in all cases, depending on the proposed
use of the material.
1.3The values stated in inch-pound units are to be regarded as the standard.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
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 and health practices and determine the applicability of regulatory
limitations prior to use.
1.5 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered as requirements of the standard.
2. Referenced Documents
2
2.1 ASTM Standards:
C88 Test Method for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate
C150 Specification for Portland Cement
C192/C192M Practice for Making and Curing Concrete Test Specimens in the Laboratory
C495 Test Method for Compressive Strength of Lightweight Insulating Concrete
C496/C496M Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens
C511 Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of
Hydraulic Cements and Concretes
C802 Practice for Conducting an Interlaboratory Test Program to Determine the Precision of Test Methods for Construction
Materials
C869 Specification for Foaming Agents Used in Making Preformed Foam for Cellular Concrete
3. Terminology
3.1 Definitions:
3.1.1 cellular concrete—a lightweight product consisting of portland cement, cement-silica, cement-pozzolan, lime-pozzolan,
or lime-silica pastes, or pastes containing blends of these ingredients and having a homogeneous void or cell structure, attained
1
This test method is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C09.23 on
Chemical Admixtures.
Current edition approved Nov.April 1, 2004.2012. Published November 2004.May 2012. Originally approved in 1974. Last previous edition approved in 1997 as
C796–97.C796–04. DOI: 10.1520/C0796-04.10.1520/C0796_C0796M-12.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
1
---------------------- Page: 1 ----------------------
C796/C796M–12
with gas-forming chemicals or foaming agents (for cellular concretes containing binder ingredients other than, or in addition to
3
portland cement, autoclave curing is usually employed). In cellular concrete the density control is achieved by substituting
macroscopic air cells for all or part of the fine aggregate. Normal-weight coarse aggregate is usually n
...
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