ASTM C1438-99(2005)e1

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: C1438 – 99 (Reapproved 2005)
Standard Specification for
Latex and Powder Polymer Modifiers for Hydraulic Cement
Concrete and Mortar
This standard is issued under the fixed designation C1438; 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.
´ NOTE—Paragraphs 1.2 and 1.3 were revised editorially November 2005.
1. Scope C125 Terminology Relating to Concrete and Concrete Ag-
gregates
1.1 This specification covers performance criteria for la-
C494/C494M Specification for Chemical Admixtures for
texes and redispersible powders when used as modifiers in
Concrete
hydraulic cement concretes and mortars to improve adhesion
C1439 Test Methods for Evaluating Polymer Modifiers in
and reduce permeability (see Note 1).
Mortar and Concrete
NOTE 1—For further information concerning theory, benefits, limita-
2.2 ACI Standard:
tions, and applications of polymer-modified hydraulic cementitious mix-
ACI 548.3R-95 State-of-the-Art Report on Polymer-
tures, refer to ACI 548.3R-95.
Modified Concrete
1.2 The performance criteria are based on certain property
3. Terminology
changes that are achieved by use of the polymer modifier when
compared to reference concrete or mortar (Test Methods
3.1 Definitions of Terms Specific to This Standard—Terms
C1439).
usedinthisspecificationaredefinedinTerminologyC125orin
1.3 Prepackaged, proprietary mortar products are not in-
this section.
cluded in this specification.Also, this specification covers only
3.1.1 latex, n—a dispersion of organic polymer particles in
those materials contained in the reference or test mixtures
water.
listed in Test Methods C1439.
3.1.2 polymer-modified concrete or mortar, n—a hydraulic
1.4 The values stated in SI units are to be regarded as
cement concrete or mortar containing a polymer modifier.
standard.
3.1.3 polymer modifier, n—latex or redispersible powder
1.5 The following precautionary statement pertains only to
formulated for use with hydraulic cements.
the test method portion, Section 10, of this specification: This
3.1.4 redispersible powder, n—powder that redisperses in
standard does not purport to address all of the safety concerns,
water to form a latex.
if any, associated with its use. It is the responsibility of the user
3.1.5 reference concrete or mortar, n—concrete or mortar
of this standard to establish appropriate safety and health
having the amounts of cement and aggregates given in Test
practices and determine the applicability of regulatory limita-
Methods C1439 and having an amount of water to achieve the
tions prior to use.
specified slump or flow.
3.1.6 test concrete or mortar, n—concrete or mortar con-
2. Referenced Documents
taining a polymer modifier and having the same composition
2.1 ASTM Standards:
(except for water content) and slump or flow as the reference
concrete or mortar.
This specification is under the jurisdiction of ASTM Committee C09 on
4. Classification
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
C09.44 on Polymer-Modified Concrete.
4.1 Polymer modifiers are classified into two product types:
Current edition approved Nov. 1, 2005. Published January 2006. Originally
4.1.1 Type I—For use in areas not exposed to moisture.
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approved in 1999. Last previous edition approved in 1999 as C1438 – 99 . DOI:
4.1.2 Type II—For general use.
10.1520/C1438-99R05E01.
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 Available fromAmerican Concrete Institute (ACI), P.O. Box 9094, Farmington
the ASTM website. Hills, MI 48333.
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