ASTM C142-97(2004)

Standard Test Method for Clay Lumps and Friable Particles in Aggregates

SIGNIFICANCE AND USE
This test method is of primary significance in determining the acceptability of aggregate with respect to the requirements of Specification C 33.
SCOPE
1.1 This test method covers the approximate determination of clay lumps and friable particles in aggregates.
1.2 The values given in SI units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.
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.

General Information

• Status: Historical
• Publication Date: 31-Jul-2004
• ICS: 91.100.01 - Construction materials in general
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.20 - Aggregates

Relations

• Replaces: ASTM C142-97 - Standard Test Method for Clay Lumps and Friable Particles in Aggregates
• Effective Date: 01-Aug-2004
• Replaced By: ASTM C142/C142M-10 - Standard Test Method for Clay Lumps and Friable Particles in Aggregates
• Effective Date: 15-Dec-2010

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
American Association of State
Designation:C142–97 (Reapproved 2004) Highway and Transportation Officials Standard
AASHTO No. T112
Standard Test Method for
Clay Lumps and Friable Particles in Aggregates
This standard is issued under the fixed designation C142; 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 Department of Defense.
1. Scope 4. Apparatus
1.1 This test method covers the approximate determination 4.1 Balance—Abalanceorscaleaccuratetowithin0.1 %of
of clay lumps and friable particles in aggregates. the mass of the test sample at any point within the range of use.
1.2 The values given in SI units are to be regarded as the Balances shall conform to the accuracy of the applicable
standard. The values given in parentheses are provided for sections of Specification C1005.
information purposes only. 4.2 Containers—Rust-resistant containers of a size and
1.3 This standard does not purport to address all of the shape that will permit the spreading of the sample on the
safety concerns, if any, associated with its use. It is the bottom in a thin layer.
responsibility of the user of this standard to establish appro- 4.3 Sieves—Sieves conforming to Specification E11.
priate safety and health practices and determine the applica- 4.4 Drying Oven—An oven providing free circulation of air
bility of regulatory limitations prior to use. andcapableofmaintainingatemperatureof110 65°C(230 6
9°F).
2. Referenced Documents
5. Samples
2.1 ASTM Standards:
C33 Specification for Concrete Aggregates 5.1 Aggregate for this test method shall consist of the
C117 TestMethodforMaterialsFinerthan75-µm(No.200) material remaining after completion of testing in accordance
Sieve in Mineral Aggregates by Washing withTestMethodC117.Toprovidethequantitiesdesignatedin
C125 Terminology Relating to Concrete and Concrete Ag- 5.3 and 5.4, it may be necessary to combine material from
gregates more than one test by Test Method C117.
C1005 Specification for Reference Masses and Devices for 5.2 Dry the aggregate to substantially constant mass at a
Determining Mass and Volume for Use in the Physical temperature of 110 6 5°C (230 6 9°F).
Testing of Hydraulic Cements 5.3 Test samples of fine aggregate shall consist of the
E11 SpecificationforWovenWireTestSieveClothandTest particles coarser than a 1.18-mm (No. 16) sieve and shall have
Sieves a mass not less than 25 g.
5.4 Separate the test samples of coarse aggregate into
3. Significance and Use
different sizes, using the following sieves: 4.75-mm (No. 4),
3 3 1
3.1 This test method is of primary significance in determin-
9.5-mm ( ⁄8-in.), 19.0-mm ( ⁄4-in.), and 37.5-mm (1 ⁄2-in.). The
ing the acceptability of aggregate with respect to the require- test sample shall have a mass not less than indicated in the
ments of Specification C33.
following table:
Size of Particles Making Up Mass of Test Sample,
Test Sample min, g
This test method is under the jurisdiction of ASTM Committee C09 on
4.75 to 9.5-mm (No. 4 to ⁄8-in.) 1000
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
3 3
9.5 to 19.0-mm ( ⁄8 to ⁄4-in.) 2000
C09.20 on Normal Weight Aggregates.
3 1
19.0 to 37.5-mm ( ⁄4 to 1 ⁄2-in.) 3000
Current edition approved Aug. 1, 2004. Published August 2004. Originally
Over 37.5-mm (1 ⁄2-in.) 5000
approved in 1938. Last previous edition approved in 1997 as C142 – 97. DOI:
10.1520/C0142-97R04.
5.5 In the case of mixtures of fine and coarse aggregates,
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
separate the material on the 4.75-mm (No. 4) sieve, and
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
prepare the samples of fine and coarse aggregates in accor-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. dance with 5.3 and 5.4.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
C142–97 (2004)
6. Procedure
where:
P = percent of clay lumps and friable particles,
6.1 Determine the mass of the test sample to the accuracy
M = mass of test sample (for fine aggregate the mass of the
...