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

SIGNIFICANCE AND USE
Researchers in the field of water repellent coatings have recognized the need for a standardized test for determining the performance of water repellents applied to structures in the field. Many coating manufacturer’supply warranties for their products based on maintaining a specific water repellency on concrete. This test method can be used to determine the effective water repellency of the coating by comparing its performance to a control uncoated specimen.
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
31-May-2006
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ASTM D6489-99(2006) - 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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 (Reapproved 2006)
StandardTest Method for
Determining the Water Absorption of Hardened Concrete
1
Treated With a Water Repellent Coating
This standard is issued under the fixed designation D6489; 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 are weighed and immersed in water. The specimens are
removed from the water, weighed, and a percent water absorp-
1.1 This test method provides a procedure for the determi-
tion is calculated.
nation of the water absorption by a core of concrete taken from
a surface treated with a water repellent.
4. Significance and Use
1.2 The intended use of the water repellent coating is to
4.1 Researchers in the field of water repellent coatings have
reduce the amount of water that absorbs into the substrate.
recognized the need for a standardized test for determining the
1.3 The values stated in SI units are to be regarded as the
performance of water repellents applied to structures in the
standard. The values given in parentheses are for information
field. Many coating manufacturer’s supply warranties for their
only.
products based on maintaining a specific water repellency on
1.4 This standard does not purport to address all of the concrete. This test method can be used to determine the
effective water repellency of the coating by comparing its
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- performance to a control uncoated specimen.
priate safety and health practices and determine the applica-
5. Apparatus and Materials
bility of regulatory limitations prior to use.
5.1 Balance, having a capacity of not less than 4000 g (8.81
2. Referenced Documents
lb) and a sensitivity of 0.1 g, (0.0002 lb) as tested in
2
2.1 ASTM Standards:
accordance with Test Method E898.
C42/C42M Test Method for Obtaining and Testing Drilled
5.2 Hot Plate, capable of at least 149°C (300°F).
Cores and Sawed Beams of Concrete
5.3 Metal Pan, at least 20.3 cm long by 15.2 cm wide and
D1193 Specification for Reagent Water
5.1 cm deep (8 in. long by 6 in. wide and 2 in. deep), suitable
D1763 Specification for Epoxy Resins
to melt the wax or mix the epoxy.
D3924 Specification for Environment for Conditioning and
Testing Paint, Varnish, Lacquer, and Related Materials
5.4 Brush, Duck Tape.
E145 Specification for Gravity-Convection and Forced-
5.5 Container, suitable for holding the water to immerse the
Ventilation Ovens
specimens.
E898 Test Method of Testing Top-Loading, Direct-Reading
5.6 Forced Draft Oven, Type IIA or IIB, as defined in
Laboratory Scales and Balances
Specification E145.
3. Summary of Test Method
5.7 Reagent Water, as defined by Type IV of Specification
3.1 The specimen is dried to a constant weight and the
D1193.
portions of the specimen not treated with the water repellent
5.8 Sealing Material, having very low permeability to
are sealed with an impervious sealing material. The specimens
water. Sealing material must meet the requirements of Section
6.
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint
NOTE 1—Sealing materials that in general meet the requirements that
and Related Coatings, Materials, andApplications and is the direct responsibility of
are defined in Specification D1763, Type I, Grade 1, (two component
Subcommittee D01.47 on Concrete, Stone and Masonry Treatments.
epoxies, epichlorohydrin/Bisphenol A and polyamine + Bisphenol A) or
Current edition approved June 1, 2006. Published June 2006. Originally
waxes used in the investment casting industry. Paraffin waxes are not
approved in 1999. Last previous edition approved in 1999 as D6489 - 99. DOI:
acceptable.
10.1520/D6489-99R06.
2
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. Sealing Material
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 6.1 Use hardened concrete specimens as described in 7.1.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D6489 − 99 (Reapproved 2006)
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
...

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