ASTM C932-06(2013)
(Specification)Standard Specification for Surface-Applied Bonding Compounds for Exterior Plastering
Standard Specification for Surface-Applied Bonding Compounds for Exterior Plastering
ABSTRACT
This specification covers the minimum requirements and test methods for determining the performance and physical properties of exterior surface-applied bonding compounds. These compounds are used for the improvement of adhesion of cementitious materials to concrete, other masonry surfaces, or any structurally sound surfaces. The methods described here are tested for surface applied bonding compound composition, consistency, film characteristics, re-emulsification, bonding capability, degradation, high temperature performance, freeze-thaw stability, and tensile bind strength.
SCOPE
1.1 This specification covers minimum requirements for exterior surface-applied bonding compounds for improving the adhesion of cementitious material to concrete or other masonry surfaces or any structurally sound surfaces.
1.2 This specification also covers test methods for determining performance requirements and physical properties.
1.3 The values stated in inch-pound units are to be regarded as the standard. The SI metric values given in parentheses are approximate and are provided for information purposes only.
1.4 The following safety hazards caveat pertains only to the test methods described in Sections 9, 10, 11, and 12 in 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.
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Designation:C932 −06 (Reapproved 2013)
Standard Specification for
Surface-Applied Bonding Compounds for Exterior
Plastering
This standard is issued under the fixed designation C932; 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 Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube
Specimens)
1.1 This specification covers minimum requirements for
C150Specification for Portland Cement
exteriorsurface-appliedbondingcompoundsforimprovingthe
C305Practice for Mechanical Mixing of Hydraulic Cement
adhesionofcementitiousmaterialtoconcreteorothermasonry
Pastes and Mortars of Plastic Consistency
surfaces or any structurally sound surfaces.
C511Specification for Mixing Rooms, Moist Cabinets,
1.2 Thisspecificationalsocoverstestmethodsfordetermin-
Moist Rooms, and Water Storage Tanks Used in the
ing performance requirements and physical properties.
Testing of Hydraulic Cements and Concretes
1.3 The values stated in inch-pound units are to be regarded C778Specification for Standard Sand
as the standard. The SI metric values given in parentheses are
approximate and are provided for information purposes only. 3. Terminology
1.4 The following safety hazards caveat pertains only to the
3.1 Definitions used in this specification shall be in accor-
test methods described in Sections 9, 10, 11, and 12 in this
dance with Terminology C11.
specification: This standard does not purport to address all of
the safety concerns, if any, associated with its use. It is the
4. Physical Properties
responsibility of the user of this standard to establish appro-
4.1 Surface Applied Bonding Compound—A freeze-thaw
priate safety and health practices and determine the applica-
stable composition, suitable for brush, roller, or spray applica-
bility of regulatory limitations prior to use.
tion.Itshallbetintedtoshowbyvisualinspectionwhereithas
1.5 This international standard was developed in accor-
been applied. The tint shall not bleed through the material
dance with internationally recognized principles on standard-
being bonded.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
4.2 Consistency—The bonding compound shall be free of
mendations issued by the World Trade Organization Technical foreign matter as determined by visual inspection and shall be
Barriers to Trade (TBT) Committee.
of such uniform consistency that when applied in accordance
with the producer’s directions by brush, roller, or spray to
2. Referenced Documents
concrete, masonry, or other structurally sound surface, the
bonding compound shall flow on evenly and dry uniformly.
2.1 ASTM Standards:
C11Terminology Relating to Gypsum and Related Building
4.3 Film Characteristics—The film-forming property shall
Materials and Systems
be determined by visual inspection to determine the presence
C109/C109MTest Method for Compressive Strength of
of a continuous film not broken by fisheyes, cracking, pull-
back, or any other discontinuity in the film surface. It shall not
be noticeably affected by alkaline surfaces or weak acids.
This specification is under the jurisdiction of ASTM Committee C11 on
4.4 Re-Emulsification—Product conforming with this speci-
GypsumandRelatedBuildingMaterialsandSystemsandisthedirectresponsibility
fication shall not re-emulsify.
of Subcommittee C11.02 on Specifications and Test Methods for Accessories and
Related Products.
Current edition approved May 1, 2013. Published August 2013. Originally
5. Performance Requirements
approved in 1980. Last previous edition approved in 2006 as C932–06. DOI:
10.1520/C0932-06R13.
5.1 Bonding Capability—The bonding compound shall be
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
capable of bonding cementitious materials when applied in
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
accordance with the producer’s directions and tested as speci-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. fied in Section 12.
*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
C932−06 (2013)
5.2 Degradation—Bonding compound which separates 7.7 Straight Edge—A steel straight edge not less than 4 in.
shall be able to be re-mixed to a uniform consistency when (100mm)longandnotlessthan ⁄16in.(1.6mm)normorethan
tested as specified in Section 10. ⁄8 in. (3.2 mm) in thickness.
5.3 High Temperature Test—The bond strength shall be not 7.8 Spatula—Aspatulawithametalblade6in.(150mm)in
lessthan150psi(1034kPa)whentestedasspecifiedinSection length and ⁄2 in. (13 mm) in width, with straight edges.
9.
7.9 Paint Brush—Astandard1in.(25mm)widebrush,with
5.4 Freeze-Thaw Stability—The bond strength shall be not synthetic bristles.
lessthan150psi(1034kPa)and100psi(690kPa)whentested
7.10 Testing Machine—Any type that is of sufficient capac-
under the dry and wet conditions, respectively, as specified in
ity and that is capable of applying the load continuously and
Section 11.
withoutshockattherateof0.05in.(1.27mm)perminute,with
5.5 Tensile Bond Strength—Bond strength of a fresh sample provision for adjustment of the rate of loading.
or a 6-month-old sample of bonding compound shall have an
7.11 Briquet Molds—The molds for making test specimens
averagetensilestrengthofnotlessthan150psi(1034kPa)and
shall be made of metal not attacked by the mortar and shall
100 psi (690 kPa) when tested under the dry and wet
havesufficientmaterialinthesidestopreventspreadingduring
conditions, respectively, as specified in Section 12.
molding. Gang molds, when used, shall be of the type shown
inFig.1.Thedimensionsofthebriquetmoldsshallconformto
6. Sampling
the following requirements: width of mold, between inside
6.1 Takeasampleofnotlessthan2.2lb(1000g)fromeach
faces, at waist line of the briquet, 1 in. (25.4 mm) with
shipment or consignment for analysis and tests. Except in
permissiblevariationsof 60.01in.(0.25mm)formoldsinuse
special cases, take the sample from not less than three separate
and 60.005 in. (0.13 mm) for new molds; thickness of molds
containers, chosen at random. In addition, take samples from
measuredatthepointofgreatestthicknessoneithersideofthe
containers that appear to be nonrepresentative, and test sepa-
mold at the waist line, 1 in. (25.4 mm) with permissible
rately. Place the samples immediately in airtight glass contain-
variations of +0.004 in. (0.10 mm) and−0.002 in. (0.05 mm)
ers and transport to the testing laboratory in these containers.
for new molds and −0.02 in. (0.5 mm) for molds in use. The
Take precautions to reduce evaporation or drying to a mini-
briquet specimens shall conform to the dimensional require-
mum.Thoroughly mix the bonding compound in the container
ments shown in Fig. 2.
if there is a tendency for liquid phase separation.
7.12 Saw—A table saw equipped with an abrasive cutting
bladeorotherbladesuitableforcuttingcementitiousmaterials.
7. Apparatus
7.13 Clips for Briquet Testing Machine—The clips for
7.1 Moist Cabinet—Specification C511.
holding the tension test specimen shall be in accordance with
7.2 Oven—A forced draft type oven, having a temperature
Fig. 3.
controlled at 140 6 5 °F (60 6 3 °C) for high temperature
8. Conditioning
tests.
8.1 Room Temperature and Humidity—Maintain the air
7.3 Freezer—A freezer having a controlled temperature of
temperature in the vicinity of the mixing and testing area at 70
−10 6 2 °F (-23 6 1 °C).
65°F(21 6 3 °C). Maintain the relative humidity at 50 6
7.4 Balance—A balance capable of weighing not less than
2%.
5.5 lb (2500 g) at a precision of 0.0002 lb (0.1 g).
8.2 Temperature of the Mixing Water—72 62°F(22 6 1
7.5 Timing Device—Aninstrumentcapableofreadingtothe
°C).
nearest second.
9. High Temperature Test
7.6 Tamper—A tamper made up of a nonabsorptive,
nonabrasive, non-brittle material and having a cross section of 9.1 Significance and Use—This test method provides pro-
⁄2 in. by 1 in. (13×25 mm) and approximately 5 to 6 in. (130 cedures for evaluating the adhesive strength of bonding com-
to 150 mm) long. The tamping face shall be flat and at right pounds after being exposed to accelerated aging at high
angles to the length of the tamper. temperature.
FIG. 1 Briquet Gang Mold
C932−06 (2013)
10.3 Procedure—Place the specimen in the oven for 15
days. Remove the container from the oven and examine the
contentsforsettlingandseparation.Placethecontainerbackin
the oven for an additional 15 days. Remove the container and
examine the contents again for settling and separation. Allow
the compound to come to room temperature, and mix to a
uniform consistency. Mix by hand stirring with a wood, metal,
or plastic paddle for not more than five minutes.
10.4 Tests and Retests—Bonding compound that fails to be
remixed to a uniform consistency shall be considered to have
failed the test.
10.5 Report—Determine the extent of settling and separa-
tion by measuring and report as a percentage of the height of
the specimen in the clear glass container, represented by the
loca
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