ASTM C1438-99e1

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e1
Designation: C1438 – 99
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 (e) indicates an editorial change since the last revision or reapproval.
e NOTE—Section 1 and footnote addresses were editorially corrected in October 1999.
1. Scope 2.2 ACI Standard:
ACI 548.3R-95 State-of-the-Art Report on Polymer-
1.1 This specification covers performance criteria for la-
Modified Concrete
texes and redispersible powders when used as modifiers in
hydraulic cement concretes and mortars to improve adhesion
3. Terminology
and reduce permeability (see Note 1).
3.1 Definitions of Terms Specific to This Standard—Terms
NOTE 1—For further information concerning theory, benefits, limita-
used in this specification are defined in Terminology C 125 or
tions, and applications of polymer-modified hydraulic cementitious mix-
in this section.
tures, refer to ACI 548.3R-95.
3.1.1 latex, n—a dispersion of organic polymer particles in
1.2 The performance criteria are based on certain property
water.
changes that are achieved by use of the polymer modifier
3.1.2 polymer-modified concrete or mortar, n—a hydraulic
compared with reference concrete or mortar (Test Methods
cement concrete or mortar containing a polymer modifier.
C 1439).
3.1.3 polymer modifier, n—latex or redispersible powder
1.3 Prepackaged, proprietary mortar products are not in-
formulated for use with hydraulic cements.
cluded in this specification. Also, this specification does not
3.1.4 redispersible powder, n—powder that redisperses in
cover cementitious mixtures modified with organic polymer
water to form a latex.
latexes and powders.
3.1.5 reference concrete or mortar, n—concrete or mortar
1.4 The values stated in SI units are to be regarded as
having the amounts of cement and aggregates given in Test
standard.
Methods C 1439 and having an amount of water to achieve the
1.5 The following precautionary statement pertains only to
specified slump or flow.
the test method portion, Section 10, of this specification: This
3.1.6 test concrete or mortar, n—concrete or mortar con-
standard does not purport to address all of the safety concerns,
taining a polymer modifier and having the same composition
if any, associated with its use. It is the responsibility of the user
(except for water content) and slump or flow as the reference
of this standard to establish appropriate safety and health
concrete or mortar.
practices and determine the applicability of regulatory limita-
4. Classification
tions prior to use.
4.1 Polymer modifiers are classified into two product types:
2. Referenced Documents
4.1.1 Type I—For use in areas not exposed to moisture.
2.1 ASTM Standards:
4.1.2 Type II—For general use.
C 125 Terminology Relating to Concrete and Aggregates
5. Ordering Information
C 494 Specification for ChemicalAdmixtures for Concrete
C 1439 Test Methods for Polymer-Modified Mortar and
5.1 Thepurchasershallspecifythetypeofpolymermodifier
Concrete
desired and the size and type of containers in which the
material is to be supplied.
This specification is under the jurisdiction of ASTM Committee C-9 on
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
C09.44 on Polymer-Modified Concrete.
Current edition approved July 10, 1999. Published September 1999. Available fromAmerican Concrete Institute (ACI), 38800 Country Club Drive,
Annual Book of ASTM Standards, Vol 04.02. Farmington Hills, MI 48333–9094.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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