ASTM C131/C131M-14
(Specification)Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine
Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine
SIGNIFICANCE AND USE
5.1 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. The percent loss determined by this test method has no known consistent relationship to the percent loss for the same material when tested by Test Method C535.
SCOPE
1.1 This test method covers a procedure for testing of coarse aggregates with a maximum size 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 C535. Thus coarse aggregates with a maximum size between 19 mm [3/4 in.] and 37.5 mm [11/2 in.] may be tested by Test Method C535 or Test Method C131/C131M.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
Note 2: Sieve size is identified by its standard designation in Specification E11. The Alternative designation given in parentheses is for information only and does not represent a different standard sieve size.
1.3 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.
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Designation: C131/C131M − 14
Standard Test 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/C131M; 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* C136 Test Method for Sieve Analysis of Fine and Coarse
Aggregates
1.1 Thistestmethodcoversaprocedurefortestingofcoarse
C535 Test Method for Resistance to Degradation of Large-
1
aggregates with a maximum size smaller than 37.5 mm ([1 ⁄2
Size CoarseAggregate byAbrasion and Impact in the Los
in.] for resistance to degradation using the LosAngeles testing
Angeles Machine
machine (Note 1).
C670 Practice for Preparing Precision and Bias Statements
NOTE 1—Aprocedure for testing coarse aggregate larger than 19.0 mm
for Test Methods for Construction Materials
3
[ ⁄4 in.] is covered in Test Method C535. Thus coarse aggregates with a
C702 PracticeforReducingSamplesofAggregatetoTesting
3 1
maximum size between 19 mm [ ⁄4 in.] and 37.5 mm [1 ⁄2 in.] may be
Size
tested by Test Method C535 or Test Method C131/C131M.
D75 Practice for Sampling Aggregates
1.2 The values stated in either SI units or inch-pound units
E11 Specification for Woven Wire Test Sieve Cloth and Test
are to be regarded separately as standard. The values stated in
Sieves
each system may not be exact equivalents; therefore, each
system shall be used independently of the other. Combining
3. Terminology
values from the two systems may result in non-conformance
3.1 Definitions—For definitions of terms used in this test
with the standard.
method, refer to Terminology C125.
NOTE 2—Sieve size is identified by its standard designation in Speci-
fication E11. The Alternative designation given in parentheses is for
4. Summary of Test Method
information only and does not represent a different standard sieve size.
4.1 This test is a measure of degradation of mineral aggre-
1.3 This standard does not purport to address all of the
gates of standard gradings resulting from a combination of
safety concerns, if any, associated with its use. It is the
actions including abrasion or attrition, impact, and grinding in
responsibility of the user of this standard to establish appro-
a rotating steel drum containing a specified number of steel
priate safety and health practices and determine the applica-
spheres, the number depending upon the grading of the test
bility of regulatory limitations prior to use.
sample. As the drum rotates, a shelf plate picks up the sample
and the steel spheres, carrying them around until they are
2. Referenced Documents
dropped to the opposite side of the drum, creating an impact-
2
2.1 ASTM Standards:
crushing effect. The contents then roll within the drum with an
A6/A6M Specification for General Requirements for Rolled
abrading and grinding action until the shelf plate picks up the
Structural Steel Bars, Plates, Shapes, and Sheet Piling
sample and the steel spheres, and the cycle is repeated. After
C125 Terminology Relating to Concrete and Concrete Ag-
the prescribed number of revolutions, the contents are removed
gregates
from the drum and the aggregate portion is sieved to measure
the degradation as percent loss.
5. Significance and Use
1
This test method is under the jurisdiction of ASTM Committee C09 on
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
5.1 This test has been widely used as an indicator of the
C09.20 on Normal Weight Aggregates.
relative quality or competence of various sources of aggregate
Current edition approved July 1, 2014. Published July 2014. Originally approved
having similar mineral compositions. The results do not
in 1937. Last previous edition approved in 2006 as C131 – 06. DOI: 10.1520/C0131
_C0131M-14.
automatically permit valid comparisons to be made between
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
sources distinctly different in origin, composition, or structure.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Assign specification limits with extreme care in consideration
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. of available aggregate types and their performance history 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
1
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...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C131 − 06 C131/C131M − 14
Standard Test 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;C131/C131M; 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*
1.1 This test method covers a procedure for testing sizes of coarse aggregate aggregates with a maximum size smaller than 37.5
1
mm (1([1 ⁄2 in.)in.] for resistance to degradation using the Los Angeles testing machine (Note 1).
3
NOTE 1—A procedure for testing coarse aggregate larger than 19.0 mm ([ ⁄4 in.)in.] is covered in Test Method C535. Thus coarse aggregates with a
3 1
maximum size between 19 mm [ ⁄4 in.] and 37.5 mm [1 ⁄2 in.] may be tested by Test Method C535 or Test Method C131/C131M.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as the standard. The inch-pound values
given in parentheses are for information only. stated in each system may not be exact equivalents; therefore, each system shall be
used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
NOTE 2—Sieve size is identified by its standard designation in Specification E11. The Alternative designation given in parentheses is for information
only and does not represent a different standard sieve size.
1.3 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.
2. Referenced Documents
2
2.1 ASTM Standards:
A6/A6M Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling
C125 Terminology Relating to Concrete and Concrete Aggregates
C136 Test Method for Sieve Analysis of Fine and Coarse Aggregates
C535 Test Method for Resistance to Degradation of Large-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles
Machine
C670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
C702 Practice for Reducing Samples of Aggregate to Testing Size
D75 Practice for Sampling Aggregates
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
3. Terminology
3.1 Definitions—For definitions of terms used in this test method, refer to Terminology C125.
4. Summary of Test Method
4.1 This test is a measure of degradation of mineral aggregates of standard gradings resulting from a combination of actions
including abrasion or attrition, impact, and grinding in a rotating steel drum containing a specified number of steel spheres, the
number depending upon the grading of the test sample. As the drum rotates, a shelf plate picks up the sample and the steel spheres,
carrying them around until they are dropped to the opposite side of the drum, creating an impact-crushing effect. The contents then
1
This test method is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C09.20 on
Normal Weight Aggregates.
Current edition approved Aug. 1, 2006July 1, 2014. Published August 2006July 2014. Originally approved in 1937. Last previous edition approved in 20032006 as
C131-03. DOI: 10.1520/C0131-06. – 06. DOI: 10.1520/C0131_C0131M-14.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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
1
---------------------- Page: 1 ----------------------
C131/C131M − 14
roll within the drum with an abrading and grinding action until the shelf plate picks up the sample and the steel spheres, and the
cycle is repeated. After the prescribed number of revolutions, the contents are removed from the drum and the aggregate portion
is sieved to measure the degra
...
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