ASTM C535-16

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: C535 − 16
Standard Test Method for
Resistance to Degradation of Large-Size Coarse Aggregate
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by Abrasion and Impact in the Los Angeles Machine
This standard is issued under the fixed designation C535; 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 U.S. Department of Defense.
1. Scope* 3. Terminology
1.1 Thistestmethodcoverstestingsizesofcoarseaggregate
3.1 For definitions of terms used in this test method, refer to
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larger than 19 mm ( ⁄4 in.) for resistance to degradation using Terminology C125.
the Los Angeles testing machine (Note 1).
4. Summary of Test Method
NOTE 1—A procedure for testing coarse aggregate smaller than 37.5
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mm (1 ⁄2 in.) is covered in Test Method C131/C131M.
4.1 This test is a measure of degradation of mineral aggre-
gates of standard gradings resulting from a combination of
1.2 The values stated in SI units are to be regarded as the
actions including abrasion or attrition, impact, and grinding in
standard. The inch-pound values given in parentheses are for
a rotating steel drum containing 12 steel spheres. As the drum
information only.
rotates, a shelf plate picks up the sample and the steel spheres,
1.3 This standard does not purport to address all of the
carrying them around until they are dropped to the opposite
safety concerns, if any, associated with its use. It is the
side of the drum, creating an impact-crushing effect. The
responsibility of the user of this standard to establish appro-
contents then roll within the drum with an abrading and
priate safety and health practices and determine the applica-
grinding action until the shelf plate picks up the sample and the
bility of regulatory limitations prior to use.
steel spheres, and the cycle is repeated. After the prescribed
numberofrevolutions,thecontentsareremovedfromthedrum
2. Referenced Documents
and the aggregate portion is sieved to measure the degradation
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2.1 ASTM Standards:
as percent loss.
C125 Terminology Relating to Concrete and Concrete Ag-
gregates
5. Significance and Use
C131/C131M Test Method for Resistance to Degradation of
Small-Size Coarse Aggregate by Abrasion and Impact in 5.1 The test has been widely used as an indicator of the
relative quality or competence of various sources of aggregate
the Los Angeles Machine
C136/C136M Test Method for Sieve Analysis of Fine and having similar mineral compositions. The results do not
Coarse Aggregates automatically permit valid comparisons to be made between
C670 Practice for Preparing Precision and Bias Statements sources distinctly different in origin, composition, or structure.
for Test Methods for Construction Materials Assign specification limits with extreme care in consideration
C702/C702M Practice for Reducing Samples of Aggregate of available aggregate types and their performance history in
to Testing Size specific end uses.
D75/D75M Practice for Sampling Aggregates
E11 Specification for Woven Wire Test Sieve Cloth and Test 6. Apparatus
Sieves
6.1 The Los Angeles Machine shall conform to the require-
ments of Test Method C131/C131M.
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This test method is under the jurisdiction of ASTM Committee C09 on 6.1.1 The operation and maintenance of the machine shall
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
be as prescribed in Test Method C131/C131M.
C09.20 on Normal Weight Aggregates.
Current edition approved June 15, 2016. Published June 2016. Originally 6.2 Sieves, conforming to Specification E11.
approved in 1964. Last previous edition approved in 2012 as C535 – 12. DOI:
6.3 Balance—A balance or scale accurate within 0.1 % of
10.1520/C0535-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or test load over the range required for this test
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
6.4 Charge—The charge (Note 2) shall consist of 12 steel
Standards volume information, refer to the standard’s Document Summary page on
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the ASTM website. spheres averaging approximately 47 mm (1 ⁄32 in.) in
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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C535 − 16
TABLE 1 Gradings of Test Samples
Sieve Size, mm (in.) (Square Openings) Mass of Indicated Sizes, g
Grading
...