ASTM C1042-99
(Test Method)Standard Test Method for Bond Strength of Latex Systems Used With Concrete By Slant Shear (Withdrawn 2008)
Standard Test Method for Bond Strength of Latex Systems Used With Concrete By Slant Shear (Withdrawn 2008)
SIGNIFICANCE AND USE
This test method can be used in measuring the effectiveness of latex systems in bonding fresh concrete to hardened concrete.
SCOPE
1.1 This test method covers the determination of the bond strength of latex bonding systems for use with portland-cement concrete. This test method covers bonding hardened mortar specimens to freshly mixed mortar specimens.
1.2 The values stated in inch-pound units are to be regarded as the standard.
1.3 This standard does not purport to address all of the safety problems, 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.
WITHDRAWN RATIONALE
Formerly under the jurisdiction of Committee C09 on Concrete and Concrete Aggregates, this test method was withdrawn without replacement in March 2008 because this test method was written for use with C 1059/C 1059M,1 which is being revised to no longer cite C 1042.
General Information
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C1042–99
Standard Test Method for
Bond Strength of Latex Systems Used With Concrete By
Slant Shear
This standard is issued under the fixed designation C 1042; 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.
1. Scope 3. Summary of Test Method
1.1 This test method covers the determination of the bond 3.1 The bond strength is determined by using the latex
strength of latex bonding systems for use with portland-cement system to bond a fresh mortar section ofa3by6in.[75by150
concrete. This test method covers bonding hardened mortar mm] portland-cement mortar cylinder to a hardened half
specimens to freshly mixed mortar specimens. cylinder,thathasadiagonallycastbondingareaatanangle30°
1.2 The values stated in either inch-pound units or SI units from vertical.After suitable curing of the composite specimen,
are to be regarded separately as standard. Within the text, the the bond stress is determined by testing the specimen in
SI units are shown in brackets. The values stated in each compression and computing the bond strength at the diagonal
system are not exact equivalents, therefore, each system shall face.
be used independently of the other. Combining values from the
4. Significance and Use
two systems may result in nonconformance with this test
method. 4.1 This test method can be used in measuring the effec-
tiveness of latex systems in bonding fresh concrete to hardened
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the concrete.
responsibility of this standard to establish appropriate safety
5. Apparatus
and health practices and determine the applicability of regu-
5.1 Apparatus to Mix Portland-Cement Mortar—This ap-
latory limitations prior to use.
paratus shall be as described in Practice C 305.
2. Referenced Documents
5.2 Specimen Molds—The molds shall be constructed in the
2.1 ASTM Standards: form of right cylinders, 3 6 ⁄16 in. [75 6 2 mm] in inside
diameter and 6 6 ⁄16 in. [150 6 2 mm] high. All molds shall
C 39 Test Method for Compressive Strength of Cylindrical
Concrete Specimens be either selected or machined so that the maximum range of
the differences in each of the dimensions of the group of molds
C 109/C 109M Test Method for Compressive Strength of
Hydraulic Cement Mortars (Using 2-in. or 50-mm Cube is less than ⁄64 in. [0.4 mm]. The molds shall be made of metal
not attacked by portland-cement mortar. The side of the mold
Specimens)
C 150 Specification for Portland Cement shall be sufficiently rigid to prevent spreading or warping. The
molds shall be made watertight before use. A satisfactory
C 192 Practice for Making and Curing Concrete Test Speci-
mens in the Laboratory material for this purpose is the paraffin-resin mixture described
in Test Method C 109/C 109M.
C 305 PracticeforMechanicalMixingofHydraulicCement
Pastes and Mortars of Plastic Consistency 5.3 Dummy Section—A dummy section (Fig. 1) shall be
machined of a hard material that is not attacked by portland-
C 617 Practice for Capping Cylindrical Concrete Speci-
mens cement mortar. It shall fit the mold and be equal to half the
volume of the cylinder, but at an angle 30° from vertical.
C 1059 Specification for LatexAgents for Bonding Fresh to
Hardened Concrete Additional dummy sections can be made by casting an epoxy
resin mortar against the machined dummy section contained in
a specimen mold. Due precautions, such as waxing, shall be
ThistestmethodisunderthejurisdictionofASTMCommitteeC-9onConcrete
taken to prevent the bonding of the epoxy resin mortar to the
andConcreteAggregatesandisthedirectresponsibilityofSubcommitteeC09.25on
machined dummy section or the mold.
Organic Materials for Bonding.
Current edition approved Feb. 10, 1999. Published May 1999. Originally
published as C 1042 – 85. Last previous edition C 1042 – 91.
Annual Book of ASTM Standards, Vol 04.02.
Annual Book of ASTM Standards, Vol 04.01.
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959, United States.
C1042
TABLE 1
or by cutting with a diamond sawblade and rinsing with water.
Keep the prepared surface damp until the bonding system has
been applied. Apply the latex bonding agent using the proce-
dure in 7.2 or 7.3 depending on the type of latex used as
defined in Specification C 1059.
7.2 TypeILatices—Brushthelatexontothediagonalfaceat
the manufacturer’s recommended coverage rate.
7.3 Type II Latices—Prepare a cement and latex slurry by
mixing Specification C 150, Type I portland cement or the
cement to be used on a particular project with the latex.
(Approximately 50 mLof latex to 100 g of cement.)Apply the
slurry to the diagonal face, the coverage rate, if specified, shall
be used.
Dimensions
7.4 Place the half cylinder in a mold and support it so that
in. mm the bonding surface is horizontal.Within 10 min after applying
the bonding agent, place a ⁄2 in. [15 mm] thick layer of the
A—Diameter 3.000 75
freshly mixed mortar over the coated surface and consolidate
B—Height 5.598 140
C—Slant height 6.000 150 the mortar by using a tamping rod, trying not to disturb the
D—Base height 0.402 10
bonding material. Add additional
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