ASTM D6532-00(2006)
(Test Method)Standard Test Method for Evaluation of the Effect of Clear Water Repellent Treatments on Water Absorption of Hydraulic Cement Mortar Specimens
Standard Test Method for Evaluation of the Effect of Clear Water Repellent Treatments on Water Absorption of Hydraulic Cement Mortar Specimens
SIGNIFICANCE AND USE
Siliceous alkaline substrates are subject to water damage that may result in deterioration. Water repellents can provide protection of siliceous alkaline substrates exposed to water. This test method is used to evaluate the efficacy of clear water repellents on alkaline substrates.
SCOPE
1.1 This test method evaluates the effectiveness of clear water repellents on hydraulic cement mortar specimens based on water absorption after a water soak.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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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Standards Content (Sample)
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Designation: D6532 − 00(Reapproved 2006)
Standard Test Method for
Evaluation of the Effect of Clear Water Repellent Treatments
on Water Absorption of Hydraulic Cement Mortar
Specimens
This standard is issued under the fixed designation D6532; 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.
1. Scope 4. Summary of Test Method
1.1 This test method evaluates the effectiveness of clear 4.1 The masonry unit is immersed in a clear water repellent,
water repellents on hydraulic cement mortar specimens based removed and allowed to cure at ambient condition for 7 days.
on water absorption after a water soak. Any deviations should be noted in 10.1.2. After cure, the
masonry unit is weighed and placed in water to a depth of 6.3
1.2 The values stated in SI units are to be regarded as the
mm ( ⁄4 in.) for 3 days. After the immersion period, the
standard. The values given in parentheses are for information
masonry unit is removed and reweighed. The water repellency
only.
value of the treatment is then calculated using a comparison to
1.3 This standard does not purport to address all of the
untreated control specimens.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Significance and Use
priate safety and health practices and determine the applica-
5.1 Siliceousalkalinesubstratesaresubjecttowaterdamage
bility of regulatory limitations prior to use.
that may result in deterioration. Water repellents can provide
protection of siliceous alkaline substrates exposed to water.
2. Referenced Documents
This test method is used to evaluate the efficacy of clear water
2.1 ASTM Standards:
repellents on alkaline substrates.
C109/C109M Test Method for Compressive Strength of
Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube 6. Apparatus
Specimens)
6.1 Forced Draft Oven, Type 1B, in accordance with the
D1475 Test Method For Density of Liquid Coatings, Inks,
Type Section of Specification E145.
and Related Products
6.2 Balance, having a capacity of not less than 400 g, and
D3924 Specification for Environment for Conditioning and
sensitivity of 0.01 g.
Testing Paint, Varnish, Lacquer, and Related Materials
E145 Specification for Gravity-Convection and Forced-
6.3 Reservoir Water Pan, capable of maintaining the water
Ventilation Ovens level at 6.3 mm ( ⁄4 in.) in depth with noncorroding rods for the
specimens to sit off the bottom.
3. Terminology
6.4 Stiff Bristle Brush, to brush the masonry units.
3.1 Definitions of Terms Specific to This Standard:
6.5 Pressurized Air Source, to blow residual material off the
3.1.1 clear water repellent, n—a coating formulated for the
brushed masonry units.
purpose of protecting porous substrates by reducing the pen-
6.6 Stopwatch.
etration of liquid water.
7. Reagents and Materials
This test method is under the jurisdiction of ASTM Committee D01 on Paint 7.1 Masonry Units, 51 by 51 by 51 mm (2 by 2 by 2 in.)
and Related Coatings, Materials, andApplications and is the direct responsibility of
masonryunitspreparedinaccordancewithproceduresoutlined
Subcommittee D01.47 on Concrete, Stone and Masonry Treatments.
in Test Method C109/C109M with the form release oil re-
Current edition approved June 1, 2006. Published June 2006. Originally
moved can be used.
approved in 2000. Last previous edition approved in 2000 as D6532 – 00. DOI:
10.1520/D6532-00R06.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 8. Procedure
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
8.1 Select substrates needed, brush, and blow off dust with
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. pressurized air. The specimens must be free of loose material
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D6532 − 00 (2006)
that may be lost and alter the weight.They also must be free of 8.9 Record weight of dry treated specimens as W and dry
td
material that will alter the absorption characteristics. untreated specimens as W . Place specimens in the water
d
reservoir, top face up, on noncorroding rods or any method that
8.2 Label each piece. Run triplicate samples for each water
allows the specimens to sit off the bottom of the pan and be in
repellent treatment. Also include three untreated control
contact with the water on all sides. The water level in the
samples for each series. All specimens in one series of testing
reservoirorpanshouldbekeepconstantat6.3mm( ⁄4in.)with
should come from the same lot of masonry units.
tap water at room temperature, as specified in Specification
NOTE 1—To make comparison between test series, a positive control
D3924, for 3 days. The 6.3 mm ( ⁄4 in.) is measured from the
needs to be included. For example, when using mortar cubes, 40 %
bottom of the specimens. Do not cover or put a lid on the pan,
isobutyltrimethoxysilane in solvent can be used as a positive control in
but ensure that the water level is kept at 6.3 mm ( ⁄4 in.).
each series.
8.10 Remove the specimens from the water after 3 days,
8.3 For the speci
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