ASTM C418-05
(Test Method)Standard Test Method for Abrasion Resistance of Concrete by Sandblasting
Standard Test Method for Abrasion Resistance of Concrete by Sandblasting
SIGNIFICANCE AND USE
This test method covers the laboratory evaluation of the relative resistance of concrete surfaces to abrasion. This procedure simulates the action of waterborne abrasives and abrasives under traffic on concrete surfaces. It performs a cutting action that tends to abrade more severely the less resistant components of the concrete.
SCOPE
1.1 This test method covers determination of the abrasion resistance characteristics of concrete by subjecting it to the impingement of air-driven silica sand. It is intended for use as a basis for the development of informed judgment.
1.2 The values stated in SI units are to be regarded as the standard. Inch-pound units are shown for information purposes in parentheses.
This standard does not purport to address 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. Note 1
Users of this test method are advised that there are known safety hazards associated with the use of silica as a blasting media. Consult the silica manufactures MSDS to insure that the latest recommended health and safety practices are being followed. Note 2
Other procedures are available for measuring abrasion resistance of concrete surfaces in addition to subjecting it to air driven silica sand. Consideration should be given to other methods of testing as outlined in ASTM C 779/C 779M, ASTM C 944, and ASTM C 1138. The test method most closely representing service conditions should be used.
1.3 The text of this standard references notes and footnotes which are provided as explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this standard.
General Information
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Standards Content (Sample)
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Designation: C418 − 05
StandardTest Method for
1
Abrasion Resistance of Concrete by Sandblasting
This standard is issued under the fixed designation C418; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope C779/C779M Test Method forAbrasion Resistance of Hori-
zontal Concrete Surfaces
1.1 This test method covers determination of the abrasion
C944 Test Method for Abrasion Resistance of Concrete or
resistance characteristics of concrete by subjecting it to the
Mortar Surfaces by the Rotating-Cutter Method
impingement of air-driven silica sand. It is intended for use as
C1138 Test Method for Abrasion Resistance of Concrete
a basis for the development of informed judgment.
(Underwater Method)
1.2 The values stated in SI units are to be regarded as the
3. Significance and Use
standard. Inch-pound units are shown for information purposes
in parentheses.
3.1 This test method covers the laboratory evaluation of the
1.3 This standard does not purport to address the safety relative resistance of concrete surfaces to abrasion. This
concerns, if any, associated with its use. It is the responsibility
procedure simulates the action of waterborne abrasives and
of the user of this standard to establish appropriate safety and abrasives under traffic on concrete surfaces. It performs a
health practices and determine the applicability of regulatory
cutting action that tends to abrade more severely the less
limitations prior to use. resistant components of the concrete.
NOTE 1—Users of this test method are advised that there are known
4. Apparatus
safety hazards associated with the use of silica as a blasting media.
4.1 Scales—The scale shall have a capacity of 5000 g or
Consult the silica manufactures MSDS to insure that the latest recom-
mended health and safety practices are being followed.
more.Thepermissiblevariationataloadof5000g(11lb)shall
NOTE 2—Other procedures are available for measuring abrasion resis-
be 6 0.5 g (0.2 oz).
tance of concrete surfaces in addition to subjecting it to air driven silica
sand. Consideration should be given to other methods of testing as 4.2 Weights—The permissible variations on weights used in
outlined in ASTM C779/C779M, ASTM C944, and ASTM C1138. The
weighing shall be as prescribed in Table 1. The permissible
test method most closely representing service conditions should be used.
variations on new weights shall be one half of the values given
1.4 The text of this standard references notes and footnotes
in Table 1.
which are provided as explanatory material. These notes and
4.3 Sand Blast Apparatus—The sand blast apparatus shall
footnotes (excluding those in tables and figures) shall not be
consist of an injector-type gun. The gun shall have a high-
considered as requirements of this standard.
velocity air jet fed by a suitably controlled rate of flow for the
abrasive material. The nozzle shown in Fig. 1 shall consist of
2. Referenced Documents
cold-rolled bar stock, 40 mm (1.5 in.) long, or hardened tool
2
2.1 ASTM Standards: steel HRC 48 6 2 as determined by Test Methods E18, drilled
C127 Test Method for Density, Relative Density (Specific
to 6.40 6 0.02 mm (0.250 6 0.001 in.) approximately 700 kPa
Gravity), and Absorption of Coarse Aggregate (100 psi) through the center. The walls of the nozzle shall have
C778 Specification for Sand
a 45° bevel on the inside at the upper end. A compressed air
supply of approximately 100 psi (690 kPa) shall be available
andequippedwithapressure-controldevice.Provisionshallbe
made to collect the spent abrasive and dust. Suitable jigs and
1
This test method is under the jurisdiction of ASTM Committee C09 on
clamps shall be provided to hold the test specimen in a fixed
Concrete and Concrete Aggregatesand is the direct responsibility of Subcommittee
C09.62 on Abrasion Testing of Concrete.
position with relation to the discharge end of the nozzle. For
Current edition approved Feb. 1, 2005. Published February 2005. Originally
laboratory wear testing of concrete specimens a commercial
approved in 1958. Last previous edition approved in 1998 as C418 – 98. DOI:
sand blast cabinet may be selected similar to that shown in Fig.
10.1520/C0418-05.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 2.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
4.4 Shield—The shield shall be square or circular, 150 mm
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. (6 in.) on a side or diamet
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