ASTM C535-96e1

Standard Test Method for Resistance to Degradation of Large-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine

SCOPE
1.1 This test method covers testing sizes of coarse aggregate larger than 19 mm (3/4 in.) for resistance to degradation using the Los Angeles testing machine (Note 1).
Note 1-A procedure for testing coarse aggregate smaller than 37.5 mm (1 1/2in.) is covered in Method C131.  
1.2 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.  
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

General Information

• Status: Historical
• Publication Date: 09-Jun-2001
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.20 - Aggregates

Relations

• Replaced By: ASTM C535-01 - Standard Test Method for Resistance to Degradation of Large-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine
• Effective Date: 10-Jun-2001
• Referred By: ASTM C131/C131M-20 - Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine
• Effective Date: 10-Jun-2001
• Referred By: ASTM C637-20 - Standard Specification for Aggregates for Radiation-Shielding Concrete
• Effective Date: 10-Jun-2001
• Referred By: ASTM D8038-16(2022)e1 - Standard Practice for Reclamation of Recycled Aggregate Base (RAB) Material
• Effective Date: 10-Jun-2001
• Referred By: ASTM C33/C33M-23 - Standard Specification for Concrete Aggregates
• Effective Date: 10-Jun-2001
• Referred By: ASTM D4992-22 - Standard Practice for Evaluation of Rock to be Used for Erosion Control
• Effective Date: 10-Jun-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
e1
Designation: C 535 – 96
Standard Test Method for
Resistance to Degradation of Large-Size Coarse Aggregate
by Abrasion and Impact in the Los Angeles Machine
This standard is issued under the fixed designation C 535; 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.
e NOTE—Editorial changes were made throughout in September 1996.
1. Scope 3. Terminology
1.1 This test method covers testing sizes of coarse aggregate 3.1 For definitions of terms used in this test method, refer to
larger than 19 mm ( ⁄4 in.) for resistance to degradation using Terminology C 125.
the Los Angeles testing machine.
4. Summary of Test Method
NOTE 1—A procedure for testing coarse aggregate smaller than 37.5
4.1 This test is a measure of degradation of mineral aggre-
mm (1 ⁄2 in.) is covered in Method C 131.
gates of standard gradings resulting from a combination of
1.2 This standard does not purport to address all of the
actions including abrasion or attrition, impact, and grinding in
safety concerns, if any, associated with its use. It is the
a rotating steel drum containing 12 steel spheres. As the drum
responsibility of the user of this standard to establish appro-
rotates, a shelf plate picks up the sample and the steel spheres,
priate safety and health practices and determine the applica-
carrying them around until they are dropped to the opposite
bility of regulatory limitations prior to use.
side of the drum, creating an impact-crushing effect. The
1.3 The values stated in SI units are to be regarded as the
contents then roll within the drum with an abrading and
standard. The values given in parentheses are for information
grinding action until the shelf plate picks up the sample and the
only.
steel spheres, and the cycle is repeated. After the prescribed
number of revolutions, the contents are removed from the drum
2. Referenced Documents
and the aggregate portion is sieved to measure the degradation
2.1 ASTM Standards:
as percent loss.
C 125 Terminology Relating to Concrete and Concrete
Aggregates
5. Significance and Use
C 131 Test Method for Resistance to Degradation of Small-
5.1 The test has been widely used as an indicator of the
Size Coarse Aggregate by Abrasion and Impact in the Los
relative quality or competence of various sources of aggregate
Angeles Machine
having similar mineral compositions. The results do not
C 136 Test Method for Sieve Analysis of Fine and Coarse
automatically permit valid comparisons to be made between
Aggregates
sources distinctly different in origin, composition, or structure.
C 670 Practice for Preparing Precision and Bias Statements
Specification limits based on this test should be assigned with
for Test Methods for Construction Materials
extreme care in consideration of available aggregate types and
C 702 Practice for Reducing Field Samples of Aggregate to
their performance history in specific end uses.
Testing Size
D 75 Practice for Sampling Aggregates 6. Apparatus
E 11 Specification for Wire Cloth and Sieves for Testing
6.1 The Los Angeles Machine shall conform to the require-
Purposes
ments of Test Method C 131.
6.1.1 The operation and maintenance of the machine shall
be as prescribed in Test Method C 131.
This test method is under the jurisdiction of ASTM Committee C-9 on Concrete
6.2 Sieves, conforming to Specification E 11.
and Concrete Aggregatesand is the direct responsibility of Subcommittee C09.20on
6.3 Balance—A balance or scale accurate within 0.1 % of
Normal Weight Aggregates.
test load over the range required for this test
Current edition approved May 10, 1996. Published July 1996. Originally
published as C 535 – 64 T. Last previous edition C 535 – 89.
6.4 Charge—The charge shall consist of 12 steel spheres
Annual Book of ASTM Standards, Vol 04.02.
averaging approximately 47 mm (1 ⁄32 in.) in diameter, each
Annual Book of ASTM Standards, Vol 04.03.
Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
C 535
having a mass between 390 and 445 g, and having a total mass but drying before the test is always required. However, in the
of 5000 6 25 g. case of referee testing, the washing procedure shall be per-
formed. Elimination of washing after test will seldom reduce
13 7
NOTE 2—Steel ball bearings 46.038 mm (1 ⁄16 in.) and 47.625 mm (1 ⁄8
the measured loss by more than about 0.2 % of the original
in.) in diameter, having a mass approximately 400 and 440 g each,
sample weight.
respectively, are readily available. Steel spheres 46.8 mm (1 ⁄32 in.) in
diameter having a mass approximately 420 g may also be obtainable. The
NOTE 3—Valuable information concerning the uniformity of the sample
charge may consist of a mixture of these sizes conforming to the total under test may be obtained by determining the loss after 200 revolutions.
mass tolerance of 6.4. This loss should be determined without washing the material coarser than
the 1.70-mm (No. 12) sieve. T
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