ASTM D6532-00(2022)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D6532 − 00 (Reapproved 2022)
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 E145 Specification for Gravity-Convection and Forced-
Ventilation Ovens
1.1 This test method evaluates the effectiveness of clear
water repellents on hydraulic cement mortar specimens based
3. Terminology
on water absorption after a water soak.
3.1 Definitions of Terms Specific to This Standard:
1.2 The values stated in SI units are to be regarded as the
3.1.1 clear water repellent, n—a coating formulated for the
standard. The values given in parentheses are for information
purpose of protecting porous substrates by reducing the pen-
only.
etration of liquid water.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Summary of Test Method
responsibility of the user of this standard to establish appro-
4.1 The masonry unit is immersed in a clear water repellent,
priate safety, health, and environmental practices and deter-
removed and allowed to cure at ambient condition for 7 days.
mine the applicability of regulatory limitations prior to use.
Any deviations should be noted in 10.1.2. After cure, the
1.4 This international standard was developed in accor-
masonry unit is weighed and placed in water to a depth of 6.3
dance with internationally recognized principles on standard-
mm ( ⁄4 in.) for 3 days. After the immersion period, the
ization established in the Decision on Principles for the
masonry unit is removed and reweighed. The water repellency
Development of International Standards, Guides and Recom-
value of the treatment is then calculated using a comparison to
mendations issued by the World Trade Organization Technical
untreated control specimens.
Barriers to Trade (TBT) Committee.
5. Significance and Use
2. Referenced Documents
5.1 Siliceousalkalinesubstratesaresubjecttowaterdamage
2.1 ASTM Standards:
that may result in deterioration. Water repellents can provide
C109/C109M Test Method for Compressive Strength of
protection of siliceous alkaline substrates exposed to water.
Hydraulic Cement Mortars (Using 2-in. or [50 mm] Cube
This test method is used to evaluate the efficacy of clear water
Specimens)
repellents on alkaline substrates.
D1475 Test Method for Density of Liquid Coatings, Inks,
and Related Products
6. Apparatus
D3924 Specification for Standard Environment for Condi-
6.1 Forced Draft Oven, Type 1B, in accordance with the
tioning and Testing Paint, Varnish, Lacquer, and Related
Materials Type Section of Specification E145.
6.2 Balance, having a capacity of not less than 400 g, and
This test method is under the jurisdiction of ASTM Committee D01 on Paint sensitivity of 0.01 g.
and Related Coatings, Materials, andApplications and is the direct responsibility of
6.3 Reservoir Water Pan, capable of maintaining the water
Subcommittee D01.47 on Concrete, Stone and Masonry Treatments.
CurrenteditionapprovedJune1,2022.PublishedJuly2022.Originallyapproved level at 6.3 mm ( ⁄4 in.) in depth with noncorroding rods for the
in 2000. Last previous edition approved in 2014 as D6532 – 00(2014). DOI:
specimens to sit off the bottom.
10.1520/D6532-00R22.
6.4 Stiff Bristle Brush, to brush the masonry units.
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
6.5 Pressurized Air Source, to blow residual material off the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. brushed masonry units.
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D6532 − 00 (2022)
6.6 Stopwatch. for 7 days to ensure a constant weight is reached. If laboratory
conditions are different than those specified, ensure laboratory
7. Reagents and Materials
conditions are constant and record laboratory conditions every
7.1 Masonry Units, 51 by 51 by 51 mm (2 by 2 by 2 in.) day throughout test period and report in 10.1.2.
masonryunitspreparedinaccordancewithproceduresoutlined
8.8 After 6 days, weigh cubes to nearest 0.1 g. Allow one
in Test Method C109/C109M with the form release oil re-
more day to cure and weigh again. Compare weights at Day 6
moved can be used.
and Day 7 to ensure that a constant weight is reached. If a
constant weight is not reached, repeat every day until a
8. Procedure
constant weight is reached. A constant weight at standard
8.1 Select substrates needed, brush, and blow off dust with
conditions shall be assumed when the specimen weighed to the
pressurized air. The specimens must be free of loose material
nearest 0.1 g loses not more than 0.2 % in any 24-h period.
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
8.2 Label each piece. Run triplicate samples for each water
reservoir, top face up, on noncorroding ro
...