Standard Test Method for Determining the Water Absorption of Hardened Concrete Treated With a Water Repellent Coating

SCOPE
1.1 This test method provides a procedure for the determination of the water absorption by a core of concrete taken from a surface treated with a water repellent.
1.2 The intended use of the water repellent coating is to reduce the amount of water that absorbs into the substrate.
1.3 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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Publication Date
09-Dec-1999
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ASTM D6489-99 - Standard Test Method for Determining the Water Absorption of Hardened Concrete Treated With a Water Repellent Coating
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D6489–99
Standard Test Method for
Determining the Water Absorption of Hardened Concrete
Treated With a Water Repellent Coating
This standard is issued under the fixed designation D 6489; 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 are sealed with an impervious sealing material. The specimens
are weighed and immersed in water. The specimens are
1.1 This test method provides a procedure for the determi-
removed from the water, weighed, and a percent water absorp-
nation of the water absorption by a core of concrete taken from
tion is calculated.
a surface treated with a water repellent.
1.2 The intended use of the water repellent coating is to
4. Significance and Use
reduce the amount of water that absorbs into the substrate.
4.1 Researchers in the field of water repellent coatings have
1.3 The values stated in SI units are to be regarded as the
recognized the need for a standardized test for determining the
standard. The values given in parentheses are for information
performance of water repellents applied to structures in the
only.
field. Many coating manufacturer’s supply warranties for their
1.4 This standard does not purport to address all of the
products based on maintaining a specific water repellency on
safety concerns, if any, associated with its use. It is the
concrete. This test method can be used to determine the
responsibility of the user of this standard to establish appro-
effective water repellency of the coating by comparing its
priate safety and health practices and determine the applica-
performance to a control uncoated specimen.
bility of regulatory limitations prior to use.
5. Apparatus and Materials
2. Referenced Documents
5.1 Balance, having a capacity of not less than 4000 g (8.81
2.1 ASTM Standards:
lb) and a sensitivity of 0.1 g, (0.0002 lb) as tested in
C42 Test Method for Obtaining and Testing Drilled Cores
accordance with Test Method E 898.
and Sawed Beams of Concrete
3 5.2 Hot Plate, capable of at least 149°C (300°F).
D 1193 Specification for Reagent Water
4 5.3 Metal Pan, at least 20.3 cm long by 15.2 cm wide and
D 1763 Specification for Epoxy Resins
5.1 cm deep (8 in. long by 6 in. wide and 2 in. deep), suitable
D 3924 Specification for Standard Environment for Condi-
to melt the wax or mix the epoxy.
tioning and Testing Paint, Varnish, Lacquer, and Related
5 5.4 Brush, Duck Tape.
Materials
5.5 Container, suitable for holding the water to immerse the
E 145 Specification for Gravity Convection and Force Ven-
6 specimens.
tilation Ovens
5.6 Forced Draft Oven, Type IIA or IIB, as defined in
E 898 Test Method of Testing Top Loading, Direct Reading
6 Specification E 145.
Laboratory Scales and Balances
5.7 Reagent Water, as defined by Type IV of Specification
3. Summary of Test Method D 1193.
5.8 Sealing Material, having very low permeability to
3.1 The specimen is dried to a constant weight and the
water. Sealing material must meet the requirements of Section
portions of the specimen not treated with the water repellent
6.
1 NOTE 1—Sealing materials that in general meet the requirements that
This test method is under the jurisdiction of ASTM Committee D01 on Paint
are defined in Specification D 1763, Type I, Grade 1, (two component
and Related Coatings, Materials, andApplications and is the direct responsibility of
epoxies, epichlorohydrin/Bisphenol A and polyamine + Bisphenol A) or
Subcommittee D01.47 on Masonry Treatments.
Current edition approved Dec. 10, 1999. Published February 2000. waxes used in the investment casting industry. Paraffin waxes are not
Annual Book of ASTM Standards, Vol 04.02.
acceptable.
Annual Book of ASTM Standards, Vol 11.01.
Annual Book of ASTM Standards, Vol 08.01.
6. Sealing Material
Annual Book of ASTM Standards, Vol 06.01.
6.1 Use hardened concrete specimens as described in 7.1.
Annual Book of ASTM Standards, Vol 14.04.
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D6489–99
6.2 Follow the procedures of Section 8, except for 8.4 and 8.8 Repeat 8.5 and 8.6 after 3 min have elapsed.
8.5. Instead use the sealing material to completely seal the 8.9 Carefully remove the duct tape from the specimen.
specimen, top, bottom and sides. 8.10 Using a brush apply sealing material to any pin holes
6.3 Follow the procedures of Section 9, except completely or holidays that appear in the coating. Allow some of the
submerged the specimens so that the water level is 25.4 mm sealing material to overlap the specimen’s top edge.
(1.0 in.) over the top of the specimen.
NOTE 3—Specimens removed by core drilling may have top surfaces
6.4 After the specimens have been submerged in water for
that are chipped. These areas should be coated with the sealing material
48 h,
...

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