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ASTM C331-03a

(Specification)

Standard Specification for Lightweight Aggregates for Concrete Masonry Units

Standard Specification for Lightweight Aggregates for Concrete Masonry Units

SCOPE
1.1 This specification covers lightweight aggregates intended for use in concrete masonry units when a prime consideration is to reduce the density of the units.
1.2 The values stated in SI units are to be regarded as the standard. The values shown in parentheses are for information purposes only.
1.3 The text of this specification references notes and footnotes which provide explanatory materials. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.

General Information

Status
Historical
Publication Date
30-Nov-2003
ICS
91.100.30 - Concrete and concrete products
Technical Committee
C09 - Concrete and Concrete Aggregates
Drafting Committee
C09.21 - Lightweight Aggregates and Concrete
Current Stage
Ref Project

Relations

Replaces
ASTM C331-03 - Standard Specification for Lightweight Aggregates for Concrete Masonry Units
Effective Date
01-Dec-2003
Replaced By
ASTM C331-04 - Standard Specification for Lightweight Aggregates for Concrete Masonry Units
Effective Date
01-Jan-2004
Referred By
ASTM C1790-21 - Standard Specification for Fly Ash Facing Brick
Effective Date
01-Dec-2003

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ASTM C331-03a - Standard Specification for Lightweight Aggregates for Concrete Masonry UnitsASTM C331-03a - Standard Specification for Lightweight Aggregates for Concrete Masonry Units
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ASTM C331-03a - Standard Specification for Lightweight Aggregates for Concrete Masonry Units
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 331 – 03a
Standard Specification for
1
Lightweight Aggregates for Concrete Masonry Units
This standard is issued under the fixed designation C 331; 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.
1. Scope* C 1262 Test Method for Evaluating the Freeze-Thaw Dura-
bility of Manufactured Concrete Masonry Units and Re-
1.1 This specification covers lightweight aggregates in-
lated Concrete Units
tended for use in concrete masonry units when a prime
D 75 Practice for Sampling Aggregates
consideration is to reduce the density of the units.
1.2 The values stated in SI units are to be regarded as the
3. Aggregate Types
standard. The values shown in parentheses are for information
3.1 Three general types of lightweight aggregates are cov-
purposes only.
ered by this specification, as follows:
1.3 The text of this specification references notes and
3.1.1 Aggregates prepared by expanding, pelletizing, or
footnotes which provide explanatory material. These notes and
sintering products such as blast-furnace slag, clay, diatomite,
footnotes (excluding those in tables and figures) shall not be
fly ash, shale, or slate, and
considered as requirements of the standard.
3.1.2 Aggregates prepared by processing natural materials,
2. Referenced Documents such as pumice, scoria, or tuff, and
2
3.1.3 Aggregates consisting of end products of coal or coke
2.1 ASTM Standards:
combustion.
C 29/C 29M Test Method for Bulk Density (“Unit Weight”)
3.2 The aggregates shall be composed predominately of
and Voids in Aggregate
lightweight-cellular and granular inorganic material.
C 40 Test Method for Organic Impurities in Fine Aggre-
gates for Concrete
4. Chemical Composition
C 114 Test Methods for Chemical Analysis of Hydraulic
4.1 Lightweight aggregates shall not contain excessive
Cement
amounts of deleterious substances, as determined by the
C 136 Test Method for Sieve Analysis of Fine and Coarse
following limits:
Aggregates
4.1.1 Organic Impurities (Test Method C 40)—Lightweight
C 142 Test Method for Clay Lumps and Friable Particles in
aggregates subjected to the test for organic impurities that
Aggregates
produce a color darker than the standard shall be rejected,
C 151 Test Method for Autoclave Expansion of Portland
unless it is demonstrated that the discoloration is due to small
Cement
quantities of materials not harmful to the concrete.
C 157/C 157M Test Method for Length Change of Hard-
4.1.2 Staining (Test Method C 641)—An aggregate produc-
ened Hydraulic-Cement, Mortar, and Concrete
ing a stain index of 60 or higher shall be rejected when the
C 641 Test Method for Staining Materials in Lightweight
deposited stain is found upon chemical analysis to contain an
Concrete Aggregates
iron content, expressed as Fe O equal to or greater than 1.5
2 3
C 702 Practice for Reducing Samples of Aggregate to
mg/200 g of sample.
Testing Size
4.1.3 Loss on Ignition (Test Methods C 114)—Loss on
ignition of aggregates, consisting of end products of coal or
1
This specification is under the jurisdiction of ASTM Committee C09 on coke combustion, shall not exceed 12 %. Loss on ignition of
Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee
other aggregates shall not exceed 5 %.
C09.21 on Lightweight Aggregates and Concrete.
Current edition approved Dec. 1, 2003. Published December 2003. Originally
NOTE 1—Some aggregates may contain carbonates or water of hydra-
approved in 1953. Last previous edition approved in 2003 as C 331–03.
tion that contribute to loss on ignition but may not affect the quality of the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
product. Therefore, when evaluating an aggregate, consideration should be
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
given to the material characteristics that cause the ignition loss.
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 ----------------------
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
C 331 – 03a
5. Physical Properties 6. Sampling
5.1 Lightweight aggregate under test shall meet the follow- 6.1 Sample lightweight agg
...

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4.1 This test method is of primary significance in determining the acceptability of aggregate with respect to the requirements of Specification C33/C33M.
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ASTM C1701/C1701M-17a(2023)(Test Method)
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5.1 Tests performed at the same location across a span of years may be used to detect a reduction of infiltration rate of the pervious concrete, thereby identifying the need for remediation.  
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5.4 This test method does not measure the influence on in-place infiltration rate due to sealing of voids near the bottom of the pervious concrete slab. Visual inspection of concrete cores is the best approach for determining sealing of voids near the bottom of the pervious concrete slab.
SCOPE
1.1 This test method covers the determination of the field water infiltration rate of in place pervious concrete.
Note 1: For permeable unit pavement systems, Test Method C1781/C1781M should be used. Test Method C1781/C1781M is functionally identical to this test method but includes added provisions for positioning and securing the test ring to a discontinuous surface. Both tests methods give comparable results  
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ASTM C173/C173M-23(Test Method)
Standard Test Method for Air Content of Freshly Mixed Concrete by the Volumetric Method

SIGNIFICANCE AND USE
4.1 This test method covers the determination of the air content of freshly mixed concrete. It measures the air contained in the mortar fraction of the concrete, but is not affected by air that may be present inside porous aggregate particles.  
4.1.1 Therefore, this is the appropriate test to determine the air content of concretes containing lightweight aggregates, air-cooled slag, and highly porous or vesicular natural aggregates.  
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1.1 This test method covers determination of the air content of freshly mixed concrete containing any type of aggregate, whether it be dense, cellular, or lightweight.  
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Standard Test Method for Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete

ABSTRACT
This test method covers determination of the density of freshly mixed concrete and gives formulas for calculating the unit weight, yield or relative yield, cement content, and air content of the concrete. Yield is defined as the volume of concrete produced from a mixture of known quantities of the component materials. The test method shall use the following apparatuses: balance or scale; tamping rod, which is a round straight steel rod having the tamping end rounded to a hemispherical tip; internal vibrator which may have rigid of flexible shafts, preferably powered by electric motors; measure, which is a cylindrical container made of steel or other suitable metal specified herein; strike-off plate; mallet; and scoop of a size large enough so each amount of concrete obtained from the sampling receptacle is representative and small enough so it is not spilled during placement in the measure.
SCOPE
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