C332-09 Standard Specification For Lightweight Aggregates For Insulating Concrete
C332-09 Standard Specification For Lightweight Aggregates For Insulating Concrete
C332-09 Standard Specification For Lightweight Aggregates For Insulating Concrete
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C332 − 09
TABLE 1 Grading Requirements for Lightweight Aggregates for Insulating Concrete
Nominal Percentages (Mass) Passing Sieves Having Square Openings
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 (3⁄4-in.) (1⁄2-in.) (3⁄8-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
VermiculiteA (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
(1⁄2-in. to No. 4)
9.5 to 2.36-mm (3⁄8-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 (1⁄2-in.) to 0 100 95 to 100 ... 50 to 80 ... ... ... 5 to 20 2 to 15
9.5-mm (3⁄8-in.) to 0 ... 90 to 100 65 to 90 35 to 65 ... ... 10 to 25 5 to 15
100
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.
4.2.1 Uniformity of Grading—To ensure reasonable unifor- 5.1.2 Grading—Method C136, except that when a mechani-
mity in the gradation of successive shipments of lightweight cal sieving device is used, the sieving time shall be 5 min and
aggregates, fineness modulus determination shall be made the following modification shall apply:
periodically. If the fineness modulus of the aggregate differs by 5.1.2.1 Fine aggregate—The mass of the test sample shall
more than 7 % from that of the sample submitted for be in accordance with the following table:
acceptance, the aggregate is subject to rejection, unless the Nominal Density Mass of Test
supplier demonstrates that it will produce concrete of the lb/ft3 (kg/m3) Sample, g
required characteristics. 5 to 15 (80 to 240) 50
4.3 Loose Bulk Density (Test Method C29/C29M)—The dry 15 to 25 (240 to 400) 100
25 to 35 (400 to 560) 150
loose bulk density of lightweight aggregates shall conform to 35 to 45 (560 to 720) 200
the requirements shown in Table 2. 45 to 55 (720 to 880) 250
4.3.1 Uniformity of Loose Bulk Density—The dry loose bulk 55 to 65 (880 to 1040) 300
65 to 70 (1040 to 1120) 350
density of successive shipments of lightweight aggregates shall
not differ by more than 10 % from that of the sample submitted 5.1.2.2 Coarse Aggregate—The sample shall be not less
for acceptance. than 0.1 ft3 (2830 cm3) of the material obtained in making the
bulk density determination.
5. Sampling and Testing for Aggregate Properties 5.1.3 Loose Bulk Density—Test Method C29/C29M utiliz-
ing the shoveling procedure described in Test Method C29/
5.1 Sample lightweight aggregates and determine the prop-
C29M, except test the aggregate in an oven-dry condition.
erties enumerated in this specification in accordance with the
5.1.4 Fineness Modulus—Calculate as described in Test
following methods:
Method C136.
5.1.1 Sampling—Practice D75, except sample bagged ma-
terials by riffling and then quartering. 6. Test Methods for Insulating Concrete Properties
6.1 Determine the density and thermal conductivity of the
TABLE 2 Bulk Density Requirement for Lightweight Aggregates concrete in accordance with the following methods:
of Insulating Concrete 6.1.1 Specimen Preparation—Prepare three specimens for
Dry Loose Bulk Density each type of test, applying the same composition and fabrica-
Size Designation lb/ft3 (kg/m3) tion procedure as is proposed for use. Moist-cure the speci-
Min Max mens for 7 days and then remove them from the moist room
Group I: and store at a temperature of 73.4 6 3 °F (23 6 1.7 °C) and at
Perlite 7.5 (120) 12 (196) a relative humidity of 50 6 5 % until the time of test. Dry the
Vermiculite 5.5 (88) 10 (160)
Group II: specimens at the age of 28 days in an oven at 230 6 18 °F (110
Fine aggregate ... 70 (1120) 6 10 °C) and weigh them at 24-h intervals until the loss in
Coarse aggregate ... 55 (880) mass does not exceed 1 % in a 24-h period.
Combined fine and coarse ... 65 (1040)
aggregate 6.1.2 Concrete Density—Determine the density from speci-
mens each of which has a volume of not less than 0.1 ft3 (2 L).
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Determine the mass and dimensions of the oven-dry specimens random, in any one shipment differ by more than 5 % from that
and compute the volume and the density from the average data indicated on the package.
obtained. 7.5 The net mass of the contents shall be determined by
6.1.3 Thermal Conductivity—Determine the thermal con- weighing the package or packages and deducting the mass of
ductivity in accordance with Test Method C177, except prepare the container.
and cure the specimens in accordance with 6.1.1. The dimen-
sions of the specimens shall be as required for the testing 7.6 The bulk volume of the contents in a package shall be
equipment available. Report the details of the composition and calculated by determining the mass of the contents of the
fabrication procedure used in preparing the specimens. package and dividing by the bulk density of the aggregate. The
bulk density of the aggregate shall be determined in accordance
7. Rejection and Rehearing with the shoveling procedure given in Test Method C29/C29M
7.1 Material that fails to conform to the requirements of this using material from one or more of the packages selected in
specification is subject to rejection. Rejection shall be reported 7.4.2.
to the producer or supplier promptly and in writing. In case of
8. Certification
dissatisfaction with the result of the test, the producer or
supplier shall make claim for a rehearing. 8.1 When specified in the purchase order or contract, a
producer’s or supplier’s certification shall be furnished to the
7.2 The purchaser of materials covered by this specification
purchaser that the material was manufactured, sampled, tested,
shall have the option of evaluating these materials for rejection
and inspected in accordance with this specification and has
by either minimum mass or approximate volume as stated.
been found to meet the requirements. When specified in the
7.3 Individual packages are subject to rejection when: purchase order or contract, a report of the test results shall be
7.3.1 The contents, on a mass basis, are 5 % less than that furnished.
indicated on the package, or
7.3.2 The contents, on a volume basis, are 10 % less than 9. Packaging and Package Marking
that indicated on the package. 9.1 When lightweight aggregates covered by this specifica-
7.4 The entire shipment is subject to rejection. tion are delivered in packages, the name of the manufacturer,
7.4.1 On a mass basis when the average contents of two type of aggregate, and minimum mass and approximate vol-
packages for each 100, but not less than 6 packages selected at ume of the contents shall be plainly indicated thereon.
random, in any one shipment, are less than that indicated on the
package. 10. Keywords
7.4.2 On a volume basis when the average contents of two 10.1 insulating concrete; lightweight aggregate; thermal
packages for each 100, but not less than 6 packages selected at properties
SUMMARY OF CHANGES
Committee C09 has identified the location of selected changes to this specification since the last issue,
C332 – 07, that may impact the use of this specification. (Approved November 1, 2009)
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