ASTM C418-98

Standard Test Method for Abrasion Resistance of Concrete by Sandblasting

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 except where inch-pound units are given first followed by SI units in parentheses.
1.3 This standard does not purport to address the safety problems 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-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 C779 and C944. The test method most closely representing service conditions should be used.

General Information

• Status: Historical
• Publication Date: 09-May-1998
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.62 - Abrasion Testing

Relations

• Replaced By: ASTM C418-05 - Standard Test Method for Abrasion Resistance of Concrete by Sandblasting
• Effective Date: 01-Feb-2005
• Referred By: ASTM C944/C944M-19 - Standard Test Method for Abrasion Resistance of Concrete or Mortar Surfaces by the Rotating-Cutter Method
• Effective Date: 10-May-1998
• Referred By: ASTM C1803-20 - Standard Guide for Abrasion Resistance of Mortar Surfaces Using a Rotary Platform Abraser
• Effective Date: 10-May-1998
• Referred By: ASTM C902-22 - Standard Specification for Pedestrian and Light Traffic Paving Brick
• Effective Date: 10-May-1998
• Referred By: ASTM C1138M-19 - Standard Test Method for Abrasion Resistance of Concrete (Underwater Method)
• Effective Date: 10-May-1998
• Referred By: ASTM C1272-22a - Standard Specification for Heavy Vehicular Paving Brick
• Effective Date: 10-May-1998
• Referred By: ASTM C779/C779M-19 - Standard Test Method for Abrasion Resistance of Horizontal Concrete Surfaces
• Effective Date: 10-May-1998
• Referred By: ASTM C936/C936M-23 - Standard Specification for Solid Concrete Interlocking Paving Units
• Effective Date: 10-May-1998

Standards Content (Sample)

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:C 418–98
Standard Test Method for
Abrasion Resistance of Concrete by Sandblasting
This standard is issued under the fixed designation C 418; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3. Significance and Use
1.1 This test method covers determination of the abrasion 3.1 This test method covers the laboratory evaluation of the
resistance characteristics of concrete by subjecting it to the relative resistance of concrete surfaces to abrasion. This
impingement of air-driven silica sand. It is intended for use as procedure simulates the action of waterborne abrasives and
a basis for the development of informed judgment. abrasives under traffic on concrete surfaces. It performs a
1.2 The values stated in SI units are to be regarded as the cutting action which tends to abrade more severely the less
standard. Inch-pound units are shown for information purposes resistant components of the concrete. Adjustments in the
in parentheses. pressure used and the type of abrasive permit a variation in the
1.3 This standard does not purport to address the safety severity of abrasion which may be used to simulate other types
concerns, if any, associated with its use. It is the responsibility of wear.
of the user of this standard to establish appropriate safety and
4. Apparatus
health practices and determine the applicability of regulatory
4.1 Scales—The scale shall have a capacity of 5000 g or
limitations prior to use.
more.Thepermissiblevariationataloadof5000g(11lb)shall
NOTE 1—Users of this test method are advised that there are known
be 65 g (0.2 oz).
safety hazards associated with the use of silica as a blasting media.
4.2 Weights—The permissible variations on weights used in
Consult the silica manufactures MSDS to insure that the latest recom-
weighing shall be as prescribed in Table 1. The permissible
mended health and safety practices are being followed.
NOTE 2—Other procedures are available for measuring abrasion resis-
variations on new weights shall be one half of the values given
tance of concrete surfaces in addition to subjecting it to air driven silica
in Table 1.
sand. Consideration should be given to other methods of testing as
4.3 Sand Blast Apparatus—The sand blast apparatus shall
outlined in ASTM C 779, ASTM C 944, and ASTM C 1138. The test
consist of an injector-type gun. The gun shall have a high-
method most closely representing service conditions should be used.
velocity air jet fed by a suitably controlled rate of flow for the
1.4 The text of this standard references notes and footnotes
abrasive material. The nozzle shown in Fig. 1 shall consist of
which are provided as explanatory material. These notes and
cold-rolled bar stock, 40 mm (1.5 in.) long, or hardened tool
footnotes (excluding those in tables and figures) shall not be
steel HRC 48 6 2 as determined by Test Methods E 18, drilled
considered as requirements of this standard.
to 6.40 6 0.02 mm (0.250 6 0.001 in.) approximately 700 kPa
(100 psi) through the center. The walls of the nozzle shall have
2. Referenced Documents
a 45° bevel on the inside at the upper end. A compressed air
2.1 ASTM Standards:
supply of approximately 100 psi (690 kPa) shall be available
C 778 Specification for Standard Sand
andequippedwithapressure-controldevice.Provisionshallbe
C 779 Test Method for Abrasion Resistance of Horizontal
made to collect the spent abrasive and dust. Suitable jigs and
Concrete Surfaces
clamps shall be provided to hold the test specimen in a fixed
C 944 Test Method for Abrasion Resistance of Concrete or
position with relation to the discharge end of the nozzle. For
Mortar Surfaces by the Rotating-Cutter Method
laboratory wear testing of concrete specimens a commercial
C 1138 Test Method for Abrasion Resistance of Concrete
sand blast cabinet may be selected similar to that shown in Fig.
(Underwater Method)
2.
4.4 Shield—The shield shall be square or circular, 150 mm
(6 in.) on a side or diameter, made from zinc-coated steel sheet
ThistestmethodisunderthejurisdictionofASTMCommitteeC-9onConcrete
or equivalent, having a thickness in the range of 0.90 to 1.90
andConcreteAggregatesandisthedirectresponsibilityofSubcommitteeC09.62on
Abrasion Testing of Concrete.
Current edition approved May 10, 1998. Published March 1999. Originally
published as C 418 – 58 T. Last previous edition C 418 – 90.
2 4
Annual Book of ASTM Standards, Vol 04.01. Asand blast cabinet is available from CLEMCO Industries, 2177 JerroldAve.,
Annual Book of ASTM Standards, Vol 04.02. San Francisco, CA 94124.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
C418–98
TABLE 1 Permissible Variations on Weights
6.3 Acold-rolledsteelnozzleshallbereplacedevery60min
Permissible Variations on of operating time. A hardened tool steel nozzle shall be
Weight, g
Weights in Use, g
changed as required to maintain the original uniform flow and
1000 60.50
original blast pattern.
500 60.35
300 60.30
7. Procedure
250 60.25
200 60.20
7.1 Place the specimen
...