ASTM C332-99

Standard Specification for Lightweight Aggregates for Insulating Concrete

SCOPE
1.1 This specification covers lightweight aggregates intended for use in concrete not exposed to the weather, in which the prime consideration is the thermal insulating property of the resulting concrete.  
1.2 With regard to sieve size and the size of aggregate as determined by the use of testing sieves, the values in inch-pound units are shown for the convenience of the user; however, the standard sieve designation shown in parentheses is the standard value as stated in Specification E11.  
1.2.1 With regard to other units of measure, the values stated in inch-pound units are to be regarded as standard.  
1.3 The following precautionary caveat pertains only to the test method portion, Section 6, of the specification: This standard does not purport to address all of the safety problems, 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: 09-Nov-1999
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.21 - Lightweight Aggregates and Concrete

Relations

• Replaced By: ASTM C332-07 - Standard Specification for Lightweight Aggregates for Insulating Concrete
• Effective Date: 15-Jul-2007
• Referred By: ASTM C1127/C1127M-15(2023) - Standard Guide for Use of High Solids Content, Cold Liquid-Applied Elastomeric Waterproofing Membrane with an Integral Wearing Surface
• Effective Date: 10-Nov-1999
• Referred By: ASTM C33/C33M-23 - Standard Specification for Concrete Aggregates
• Effective Date: 10-Nov-1999
• Referred By: ASTM C1693-11(2017) - Standard Specification for Autoclaved Aerated Concrete (AAC)
• Effective Date: 10-Nov-1999
• Referred By: ASTM C128-22 - Standard Test Method for Relative Density (Specific Gravity) and Absorption of Fine Aggregate
• Effective Date: 10-Nov-1999
• Referred By: ASTM C127-15 - Standard Test Method for Relative Density (Specific Gravity) and Absorption of Coarse Aggregate (Withdrawn 2024)
• Effective Date: 10-Nov-1999
• Referred By: ASTM C513/C513M-11(2019) - Standard Test Method for Obtaining and Testing Specimens of Hardened Lightweight Insulating Concrete for Compressive Strength
• Effective Date: 10-Nov-1999

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: C 332 – 99
Standard Specification for
Lightweight Aggregates for Insulating Concrete
This standard is issued under the fixed designation C 332; 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 D75 Practice for Sampling Aggregates
E11 Specification for Wire-Cloth and Sieves for Testing
1.1 This specification covers lightweight aggregates in-
Purposes
tended for use in concrete not exposed to the weather, in which
the prime consideration is the thermal insulating property of
3. Classification
the resulting concrete.
3.1 Two general types of lightweight aggregate are covered
1.2 The text of this standard references notes and footnotes
by this specification as follows:
which provide explanatory material. These notes and footnotes
3.1.1 GroupI—Aggregates prepared by expanding products
(excluding those in tables and figures) shall not be considered
such as perlite or vermiculite.
as requirements of the standard.
1.3 With regard to sieve size and the size of aggregate as
NOTE 1—These aggregates generally produce concrete weighing from
3 3
determined by the use of testing sieves, the values in inch- 15 to 50 lb/ft (240 to 800 kg/m ), the thermal conductivity of which may
be expected to range from 0.45 to 1.50 Btu·in/h·ft ·°F (0.065 to 0.22
pound units are shown for the convenience of the user;
W/m·K).
however, the standard sieve designation shown in parentheses
is the standard value as stated in SpecificationE11.
3.1.2 Group II—Aggregates prepared by expanding, calcin-
1.3.1 With regard to other units of measure, the values ing, or sintering products such as blast-furnace slag, clay,
stated in inch-pound units are to be regarded as standard.
diatomite, fly ash, shale, or slate; and aggregates prepared by
1.4 The following precautionary caveat pertains only to the processing natural materials, such as pumice, scoria, or tuff.
test method portion, Section 6, of the specification: This
NOTE 2—These aggregates generally produce concrete weighing from
standarddoesnotpurporttoaddressallofthesafetyconcerns, 3 3
45to90lb/ft (720to1440kg/m ),thethermalconductivityofwhichmay
ifany,associatedwithitsuse.Itistheresponsibilityoftheuser
be expected to range from 1.05 to 3.00 BTU·in/h·ft · °F (0.15 to 0.43
of this standard to establish appropriate safety and health
W/m·K).
practices and determine the applicability of regulatory limita-
3.2 The aggregate shall be composed predominantly of
tions prior to use.
lightweight cellular and granular inorganic material.
2. Referenced Documents
4. Physical Properties
2.1 ASTM Standards:
4.1 Insulating Properties—The thermal insulating proper-
C 29/C 29M Test Method for Unit Weight and Voids in
ties of concrete made from the lightweight aggregate under test
Aggregate
shall conform to the following limits:
C 136 Method for Sieve Analysis of Fine and Coarse
Maximum Average 28-Day Maximum Average
Aggregates
Oven-Dry Thermal Conductivity,
3 2
Unit Weight, lb/ft Btu·in/h·ft ·°F
C 177 Test Method for Steady-State Heat-Flux Measure-
(kg/m ) (W/m·K)
ments and Thermal Transmission Properties by Means of
50 (800) 1.50 (0.22)
the Guarded-Hot-Plate Apparatus
90 (1440) 3.00 (0.43)
4.2 Grading—The grading shall conform to the require-
ments shown in Table 1.
4.2.1 Uniformity of Grading—To ensure reasonable unifor-
This specification is under the jurisdiction of ASTM Committee C-9 on
mity in the gradation of successive shipments of lightweight
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
C09.21 on Lightweight Aggregates.
Current edition approved Nov. 10, 1999. Published February 2000. Originally
published as C 332 – 54 T. Last previous edition C 332 – 87 (1998).
2 4
Annual Book of ASTM Standards, Vol 04.02. Annual Book of ASTM Standards, Vol 04.03.
3 5
Annual Book of ASTM Standards, Vol 04.06. Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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.
C332–99
TABLE 1 Grading Requirements for Lightweight Aggregates for Insulating Concrete
Weight Percent Passing Sieves
Size
Designa-
19.0-mm 12.5-mm 9.5-mm 4.75-mm 2.36-mm 1.18-mm 600-µm 300-µm 150-µm
tion 3 1 3
( ⁄4-in.) ( ⁄2-in.) ( ⁄8-in.) (No. 4) (No. 8) (No. 16) (No. 30) (No. 50) (No. 100)
Group I
Perlite . . . 100 85 to 100 40 to 85 20 to 60 5 to 25 0 to 10
A
Vermiculite (Coarse) . . 100 98 to 100 60 to 100 30 to 85 2 to 45 1 to 20 0 to 10
Vermiculite (Fine) . . . . 100 85 to 100 35 to 85 2 to 40 0 to 10
Group II
Fine aggregate: . . 100 85 to 100 . 40 to 80 . 10 to 35 5 to 25
4.75-mm (No. 4) to 0
Coarse Aggregate: 100 90 to 100 40 to 80 0 to 20 0 to 10 . . . .
12.5 to 4.75-mm
( ⁄2-in. to No. 4)
9.5 to 2.36-mm ( ⁄8-in. . 100 80 to 100 5 to 40 0 to 20 . . . .
to No. 8)
4.75 to 2.36-mm (No. 4 . . 100 90 to 100 0 to 20 . . . .
to No. 8)
Combined Fine and
Coarse Aggregate:
12.5-mm ( ⁄2-in.) to 0 100 95 to 100 . 50 to 80 . . . 5 to 20 2 to 15
9.5-mm ( ⁄8-in.) to 0 . 90 to 100 65 to 90 35 to 65 . . 10 to 25 5 to 15
A
Attention is directed to the need for adjustment in water content and air entrainment to achieve comparable oven-dry unit weights for the two gradings.
aggregates, fineness modulus determination shall be made
Nominal Weight Weight of Test
3 3
lb/ft (kg/m ) Sample, g
periodically. If the fineness modulus of the aggregate differs by
more than 7 % from that of the sample submitted for accep-
5 to 15 (80 to 240) 50
tance, the aggregate is subject to rejection, unless the supplier 15 to 25 (240 to 400) 100
25 to 35 (400 to 560) 150
demonstrates that it will produce concrete of the required
35 to 45 (560 to 720) 200
characteristics.
45 to 55 (720 to 880) 250
4.3 Unit Weight—The unit weight of lightweight aggregates
55 to 65 (880 to 1040) 300
65 to 70 (1040 to 1120) 350
Table 2.
shall conform to the requirements shown in
4.3.1 Uniformity of Unit Weight—The weight of successive
5.1.2.2 Coarse Aggregate—The sample shall
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