1、Designation: C332 09C332 17Standard Specification forLightweight Aggregates for Insulating Concrete1This standard is issued under the fixed designation C332; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision
2、. A number in parentheses indicates the year of last reapproval. Asuperscript 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 specification covers lightweight aggreg
3、ates intended for use in concrete not exposed to the weather, in which the primeconsideration is the thermal insulating property of the resulting concrete.1.2 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes(excluding those in tab
4、les and figures) shall not be considered as requirements of the standard.1.3 With regard to sieve size and the size of aggregate as determined by the use of testing sieves, the values in inch-pound unitsare shown for the convenience of the user; however, the standard sieve designation shown in paren
5、theses is the standard value asstated in Specification E11.1.3.1 With regard to other units of measure, the values stated in inch-pound units are to be regarded as standard. The valuesgiven in parentheses are mathematical conversions to SI units that are provided for information only and are not con
6、sideredstandard.1.4 The following precautionary caveat pertains only to the test method portion, Section 67, of the specification: This standarddoes not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of thisstandard to establish a
7、ppropriate safety and health practices and determine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of Inte
8、rnational Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C29/C29M Test Method for Bulk Density (“Unit Weight”) and Voids in AggregateC125 Terminology Relating to Concrete and Concrete
9、AggregatesC136C136/C136M Test Method for Sieve Analysis of Fine and Coarse AggregatesC177 Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of theGuarded-Hot-Plate ApparatusD75D75/D75M Practice for Sampling AggregatesE11 Specification for Woven Wire Tes
10、t Sieve Cloth and Test Sieves3. Terminology3.1 Definitions:3.1.1 For definitions of terms used in this specification, refer to Terminology C125.4. Classification4.1 Two general types of lightweight aggregate are covered by this specification as follows:4.1.1 Group IAggregates prepared by expanding p
11、roducts such as perlite or vermiculite.1 This specification is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregatesand is the direct responsibility of Subcommittee C09.21 onLightweight Aggregates and Concrete.Current edition approved Nov. 1, 2009June 15, 2017. Published D
12、ecember 2009July 2017. Originally approved in 1954. Last previous edition approved in 20072009 asC332 07.C332 09. DOI: 10.1520/C0332-09.10.1520/C0332-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM St
13、andardsvolume information, refer to the standards Document Summary page on the ASTM website.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. Becauseit may not be technically possib
14、le to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyr
15、ight ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1NOTE 1These aggregates generally produce concrete having a density from 15 to 50 lb/ft3 (240 to 800 kg/m3), the thermal conductivity of which maybe expected to range from 0.45 to 1.50 Btuin/h
16、ft2 F (0.065 to 0.22 W/mK).4.1.2 Group IIAggregates prepared by expanding, calcining, or sintering products such as blast-furnace slag, clay, diatomite,fly ash, shale, or slate; and aggregates prepared by processing natural materials, such as pumice, scoria, or tuff.NOTE 2These aggregates generally
17、produce concrete having a density from 45 to 90 lb/ft3 (720 to 1440 kg/m3), the thermal conductivity of whichmay be expected to range from 1.05 to 3.00 BTUin/hft2 F (0.15 to 0.43 W/mK).4.2 The aggregate shall be composed predominantly of lightweight cellular and granular inorganic material.5. Physic
18、al Properties5.1 Insulating PropertiesThe thermal insulating properties of concrete made from the lightweight aggregate under test shallconform to the following limits:Maximum Average 28-Day Maximum AverageOven-Dry Thermal Conductivity,Bulk Density, lb/ft3 Btuin/hft2F(kg/m3) (W/mK)50 (800)90 (1440)1
19、.50 (0.22)3.00 (0.43)5.2 GradingThe grading shall conform to the requirements shown in Table 1.TABLE 1 Grading Requirements for Lightweight Aggregates for Insulating ConcreteNominalSizeDesigna-tionPercentages (Mass) Passing Sieves Having Square Openings19.0-mm(34-in.)12.5-mm(12-in.)9.5-mm(38-in.)4.7
20、5-mm(No. 4)2.36-mm(No. 8)1.18-mm(No. 16)600-m(No. 30)300-m(No. 50)150-m(No. 100)Group IPerlite . . . 100 85 to 100 40 to 85 20 to 60 5 to 25 0 to 10VermiculiteA (Coarse) . . 100 98 to 100 60 to 100 30 to 85 2 to 45 1 to 20 0 to 10Vermiculite (Fine) . . . . 100 85 to 100 35 to 85 2 to 40 0 to 10Group
21、 IIFine aggregate:4.75-mm (No. 4) to 0. . 100 85 to 100 . 40 to 80 . 10 to 35 5 to 25Coarse Aggregate:12.5 to 4.75-mm(12-in. to No. 4)100 90 to 100 40 to 80 0 to 20 0 to 10 . . . .9.5 to 2.36-mm (38-in.to No. 8). 100 80 to 100 5 to 40 0 to 20 . . . .4.75 to 2.36-mm (No. 4to No. 8). . 100 90 to 100 0
22、 to 20 . . . .Combined Fine andCoarse Aggregate:12.5-mm (12-in.) to 0 100 95 to 100 . 50 to 80 . . . 5 to 20 2 to 159.5-mm (38-in.) to 0 .10090 to 100 65 to 90 35 to 65 . . 10 to 25 5 to 15A Attention is directed to the need for adjustment in water content and air entrainment to achieve comparable o
23、ven-dry unit weights for the two gradings.C332 1725.2.1 Uniformity of GradingTo ensure reasonable uniformity in the gradation of successive shipments of lightweightaggregates, fineness modulus determination shall be made periodically. If the fineness modulus of the aggregate differs by morethan 7 %
24、from that of the sample submitted for acceptance, the aggregate is subject to rejection, unless the supplier demonstratesthat it will produce concrete of the required characteristics.5.3 Loose Bulk Density (Test Method C29/C29M)The dry loose bulk density of lightweight aggregates shall conform to th
25、erequirements shown in Table 2.5.3.1 Uniformity of Loose Bulk DensityThe dry loose bulk density of successive shipments of lightweight aggregates shall notdiffer by more than 10 % from that of the sample submitted for acceptance.6. Sampling and Testing for Aggregate Properties6.1 Sample lightweight
26、aggregates and determine the properties enumerated in this specification in accordance with thefollowing methods:6.1.1 SamplingPractice D75D75/D75M, except sample bagged materials by riffling and then quartering.6.1.2 GradingMethod C136C136/C136M, except that when a mechanical sieving device is used
27、, the sieving time shall be 5min and the following modification shall apply:6.1.2.1 Fine aggregateThe mass of the test sample shall be in accordance with the following table:Nominal Densitylb/ft3 (kg m3)Mass of TestSample, g5 to 15 (80 to 240) 5015 to 25 (240 to 400) 10025 to 35 (400 to 560) 15035 t
28、o 45 (560 to 720) 20045 to 55 (720 to 880) 25055 to 65 (880 to 1040) 30065 to 70 (1040 to 1120) 3506.1.2.2 Coarse AggregateThe sample shall be not less than 0.1 ft3 (2830 cm3) of the material obtained in making the bulkdensity determination.6.1.3 Loose Bulk DensityTest Method C29/C29M utilizing the
29、shoveling procedure described in Test Method C29/C29M,except test the aggregate in an oven-dry condition.6.1.4 Fineness ModulusCalculate as described in Test Method C136C136/C136M.7. Test Methods for Insulating Concrete Properties7.1 Determine the density and thermal conductivity of the concrete in
30、accordance with the following methods:7.1.1 Specimen PreparationPrepare three specimens for each type of test, applying the same composition and fabricationprocedure as is proposed for use. Moist-cure the specimens for 7 days and then remove them from the moist room and store ata temperature of 73.4
31、 6 3 F (23 6 1.7 C) and at a relative humidity of 50 6 5 % until the time of test. Dry the specimens atthe age of 28 days in an oven at 230618 F (110610 C) and weigh them at 24-h intervals until the loss in mass does not exceed1 % in a 24-h period.7.1.2 Concrete DensityDetermine the density from spe
32、cimens each of which has a volume of not less than 0.1 ft3 (2 L).Determine the mass and dimensions of the oven-dry specimens and compute the volume and the density from the average dataobtained.7.1.3 Thermal ConductivityDetermine the thermal conductivity in accordance with Test Method C177, except p
33、repare andcure the specimens in accordance with 6.1.17.1.1. The dimensions of the specimens shall be as required for the testing equipmentavailable. Report the details of the composition and fabrication procedure used in preparing the specimens.TABLE 2 Bulk Density Requirement for Lightweight Aggreg
34、atesof Insulating ConcreteSize DesignationDry Loose Bulk Densitylb/ft3 (kg/m3)Min MaxGroup I:Perlite 7.5 (120) 12 (196)Vermiculite 5.5 (88) 10 (160)Group II:Fine aggregate . 70 (1120)Coarse aggregate . 55 (880)Combined fine and coarseaggregate. 65 (1040)C332 1738. Rejection and Rehearing8.1 Material
35、 that fails to conform to the requirements of this specification is subject to rejection. Rejection shall be reported tothe producer or supplier promptly and in writing. In case of dissatisfaction with the result of the test, the producer or supplier shallmake claim for a rehearing.8.2 The purchaser
36、 of materials covered by this specification shall have the option of evaluating these materials for rejection byeither minimum mass or approximate volume as stated.8.3 Individual packages are subject to rejection when:8.3.1 The contents, on a mass basis, are 5 % less than that indicated on the packa
37、ge, or8.3.2 The contents, on a volume basis, are 10 % less than that indicated on the package.8.4 The entire shipment is subject to rejection.8.4.1 On a mass basis when the average contents of two packages for each 100, but not less than 6 packages selected at random,in any one shipment, are less th
38、an that indicated on the package.8.4.2 On a volume basis when the average contents of two packages for each 100, but not less than 6 packages selected atrandom, in any one shipment differ by more than 5 % from that indicated on the package.8.5 The net mass of the contents shall be determined by weig
39、hing the package or packages and deducting the mass of thecontainer.8.6 The bulk volume of the contents in a package shall be calculated by determining the mass of the contents of the packageand dividing by the bulk density of the aggregate. The bulk density of the aggregate shall be determined in a
40、ccordance with theshoveling procedure given in Test Method C29/C29M using material from one or more of the packages selected in 7.4.28.4.2.9. Certification9.1 When specified in the purchase order or contract, a producers or suppliers certification shall be furnished to the purchaserthat the material
41、 was manufactured, sampled, tested, and inspected in accordance with this specification and has been found to meetthe requirements. When specified in the purchase order or contract, a report of the test results shall be furnished.10. Packaging and Package Marking10.1 When lightweight aggregates cove
42、red by this specification are delivered in packages, the name of the manufacturer, typeof aggregate, and minimum mass and approximate volume of the contents shall be plainly indicated thereon.11. Keywords11.1 insulating concrete; lightweight aggregate; thermal propertiesSUMMARY OF CHANGESCommittee C
43、09 has identified the location of selected changes to this specification since the last issue,C332 07C332 09, that may impact the use of this specification. (Approved November 1, 2009)June 15,2017.)(1) Revised 7.6.(1) Added terminology section.ASTM International takes no position respecting the vali
44、dity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subj
45、ect to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquart
46、ers. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard
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