ASTM C131-06

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

SIGNIFICANCE AND USE
This test has been widely used as an indicator of the relative quality or competence of various sources of aggregate having similar mineral compositions. The results do not automatically permit valid comparisons to be made between sources distinctly different in origin, composition, or structure. Assign specification limits with extreme care in consideration of available aggregate types and their performance history in specific end uses.
SCOPE
1.1 This test method covers a procedure for testing sizes of coarse aggregate smaller than 37.5 mm (11/ 2 in.) for resistance to degradation using the Los Angeles testing machine (Note 1). Note 1—A procedure for testing coarse aggregate larger than 19.0 mm (3/4 in.) is covered in Test Method C 535.
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound 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.

General Information

• Status: Historical
• Publication Date: 31-Jul-2006
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.20 - Aggregates

Relations

• Replaces: ASTM C131-03 - Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine
• Effective Date: 01-Aug-2006
• Replaced By: ASTM C131/C131M-14 - Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine
• Effective Date: 01-Aug-2006
• Referred By: ASTM C637-20 - Standard Specification for Aggregates for Radiation-Shielding Concrete
• Effective Date: 01-Aug-2006
• Referred By: ASTM D1241-15 - Standard Specification for Materials for Soil-Aggregate Subbase, Base, and Surface Courses
• Effective Date: 01-Aug-2006
• Referred By: ASTM F2396-11(2019) - Standard Guide for Construction of High Performance Sand-Based Rootzones for Athletic Fields
• Effective Date: 01-Aug-2006
• Referred By: ASTM F2747-19 - Standard Guide for Construction of Sand-based Rootzones for Golf Putting Greens and Tees
• Effective Date: 01-Aug-2006
• Referred By: ASTM D7564/D7564M-16 - Standard Practice for Construction of Asphalt-Rubber Cape Seal
• Effective Date: 01-Aug-2006

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: C131 − 06
StandardTest Method for
Resistance to Degradation of Small-Size Coarse Aggregate
1
by Abrasion and Impact in the Los Angeles Machine
This standard is issued under the fixed designation C131; 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* E11 Specification for Woven Wire Test Sieve Cloth and Test
Sieves
1.1 This test method covers a procedure for testing sizes of
1
coarse aggregate smaller than 37.5 mm (1 ⁄2 in.) for resistance
3. Terminology
to degradation using the LosAngeles testing machine (Note 1).
3.1 Definitions—For definitions of terms used in this test
NOTE 1—Aprocedure for testing coarse aggregate larger than 19.0 mm
method, refer to Terminology C125.
3
( ⁄4 in.) is covered in Test Method C535.
1.2 The values stated in SI units are to be regarded as the
4. Summary of Test Method
standard. The inch-pound values given in parentheses are for
4.1 This test is a measure of degradation of mineral aggre-
information only.
gates of standard gradings resulting from a combination of
1.3 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 a specified number of steel
responsibility of the user of this standard to establish appro-
spheres, the number depending upon the grading of the test
priate safety and health practices and determine the applica-
sample. As the drum rotates, a shelf plate picks up the sample
bility of regulatory limitations prior to use.
and the steel spheres, carrying them around until they are
dropped to the opposite side of the drum, creating an impact-
2. Referenced Documents
crushing effect. The contents then roll within the drum with an
2
2.1 ASTM Standards:
abrading and grinding action until the shelf plate picks up the
A6/A6M Specification for General Requirements for Rolled
sample and the steel spheres, and the cycle is repeated. After
Structural Steel Bars, Plates, Shapes, and Sheet Piling
the prescribed number of revolutions, the contents are removed
C125 Terminology Relating to Concrete and Concrete Ag-
from the drum and the aggregate portion is sieved to measure
gregates
the degradation as percent loss.
C136 Test Method for Sieve Analysis of Fine and Coarse
5. Significance and Use
Aggregates
C535 Test Method for Resistance to Degradation of Large-
5.1 This test has been widely used as an indicator of the
Size CoarseAggregate byAbrasion and Impact in the Los
relative quality or competence of various sources of aggregate
Angeles Machine
having similar mineral compositions. The results do not
C670 Practice for Preparing Precision and Bias Statements
automatically permit valid comparisons to be made between
for Test Methods for Construction Materials
sources distinctly different in origin, composition, or structure.
C702 PracticeforReducingSamplesofAggregatetoTesting
Assign specification limits with extreme care in consideration
Size
of available aggregate types and their performance history in
D75 Practice for Sampling Aggregates
specific end uses.
6. Apparatus
1
This test method is under the jurisdiction of ASTM Committee C09 on
Concrete and Concrete Aggregatesand is the direct responsibility of Subcommittee
6.1 Los Angeles Machine—A Los Angeles machine, con-
C09.20 on Normal Weight Aggregates.
forming in all essential characteristics to the design shown in
Current edition approved Aug. 1, 2006. Published August 2006. Originally
Fig. 1, shall be used. The machine shall consist of a hollow
approved in 1937. Last previous edition approved in 2003 as C131-03. DOI:
10.1520/C0131-06.
steel cylinder, with a wall thickness of not less than 12.4 mm
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
(Note 2) closed at both ends, conforming to the dimensions
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
shown in Fig. 1, having an inside diameter of 711 65mm(28
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 6 0.2 in.), and an inside length of 508 65mm(20 6 0.2 in.).
*A Summary of Changes section appears at the end of this standard
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1

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C131 − 06
Inch Equivalents
mm 6.4 12.7 25.4 89 102 152 190 508 711 1270
1 1 1 1
in. ⁄4 ⁄2 1 3 ⁄2 4 6 7 ⁄2 20 28 50
...