1、Designation: C196 00 (Reapproved 2010)Standard Specification forExpanded or Exfoliated Vermiculite Thermal InsulatingCement1This standard is issued under the fixed designation C196; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, t
2、he year of last revision. 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 Department of Defense.1. Scope1.1 This specification covers
3、expanded or exfoliated ver-miculite thermal insulating material in the form of dry cementor plaster, intended to be mixed with a suitable proportion ofwater, applied as a plastic mass, and dried in place, for use asinsulation on surfaces operating at temperatures between100F (38C) and 1800F (982C).
4、The cement shall not beused where it will be exposed to combustion conditions, suchas the hot face lining of a furnace.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information on
5、lyand are not considered standard.1.3 The following safety hazards caveat pertains only to thetest method portion, Section 10, of this specification. Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this stand
6、ard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.1.4 When the installation or use of thermal insulationmaterials, accessories and systems, may pose safety or healthproblems, the manufacturer shall provide the user with ap
7、pro-priate current information regarding any known problemsassociated with the recommended use of the companysproducts. The manufacturer shall also recommend protectivemeasures to be employed in the safe utilization of saidproducts.2. Referenced Documents2.1 ASTM Standards:2C163 Practice for Mixing
8、Thermal Insulating CementSamplesC166 Test Method for Covering Capacity and VolumeChange Upon Drying of Thermal Insulating CementC168 Terminology Relating to Thermal InsulationC177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plat
9、e ApparatusC353 Test Method for Adhesion of Dried Thermal Insulat-ing or Finishing Cement3C354 Test Method for Compressive Strength of ThermalInsulating or Finishing Cement3C356 Test Method for Linear Shrinkage of PreformedHigh-Temperature Thermal Insulation Subjected to Soak-ing HeatC390 Practice f
10、or Sampling and Acceptance of ThermalInsulation LotsC405 Practice for Estimating Consistency of Wet-MixedThermal Insulating Cement3C518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter ApparatusC1058 Practice for Selecting Temperatures for Evaluatingand Rep
11、orting Thermal Properties of Thermal Insulation3. Terminology3.1 Definitions:3.2 Terminology C168 shall be considered as applying tothe terms used in this specification.1This specification is under the jurisdiction of ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcom
12、mittee C16.20 onHomogeneous Inorganic Thermal Insulations.Current edition approved Sept. 1, 2010. Published January 2011. Originallyapproved in 1944. Last previous edition approved in 2005 as C196 00(2005). DOI:10.1520/C0196-00R10.2For referenced ASTM standards, visit the ASTM website, www.astm.org,
13、 orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Withdrawn. The last approved version of this historical standard is referencedon www.astm.org.1Copyright ASTM International, 100
14、Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4. Materials and Manufacture4.1 The cement shall be composed predominantly of ex-panded or exfoliated vermiculite, with a suitable proportion ofheat-resistant binder. Asbestos shall not be used as an ingredi-ent or compo
15、nent part of the product.5. Other Requirements5.1 The cement shall conform to the requirements given inTable 1. Conformance shall be based on results of tests onspecimens first mixed with water, according to the ratio forproper troweling consistency determined in accordance withSection 10.6. Qualifi
16、cation Requirements6.1 The following requirements are employed for purposesof initial material or product qualification:6.1.1 Consistency,6.1.2 Compressive strength,6.1.3 Linear shrinkage,6.1.4 Apparent thermal conductivity, and6.1.5 Dry adhesion to steel.7. Sampling7.1 The cement shall be sampled,
17、for the purpose of testsusing one of the following procedures.7.1.1 Inspection Requirements:7.1.1.1 Use Practice C390. Each bag shall represent a unit.7.1.1.2 In a single sampling plan by attributes the accept-ability of a lot will be determined by the number of units ofproduct in the sample that do
18、 not conform to the specifications.The acceptable quality level (AQL) and limiting quality level(LQL) of an acceptance sampling plan, expressed as percent-ages of the units nonconforming, are characteristics of thesampling plan and are not to be viewed as product specifica-tions.7.1.2 Qualification
19、Requirements:7.1.2.1 Use the average of the test data from the number oftest specimens required by the appropriate test method torepresent the average for the entire lot.7.2 The specimen for test is to be taken from the middle ofa bag, so as to be representative of material from the entire bag.8. Nu
20、mber of Tests and Retests8.1 If the average of the test data obtained using 7.1.2.1 failsto conform to the requirements of this specification, a secondsample shall be taken from the lot. Average the results of theretest with the results of the original test to determine compli-ance with this specifi
21、cation.9. Specimen Preparation9.1 Mix specimens for testing in accordance with PracticeC163.9.2 The amount of water to be used in preparing samples forall tests shall be that amount which results in the specifiedconsistency, determined in accordance with Practice C405.10. Test Methods10.1 Consistenc
22、y Practice C405.10.2 Dry Covering CapacityTest Method C166.10.3 Volume Change upon DryingTest Method C166.10.4 Compressive StrengthTest Method C354.10.5 Linear Shrinkage Test Method C356.10.6 Apparent Thermal ConductivityTest Method C177or Test Method C518, except prepare the test specimens asfollow
23、s:10.6.1 Mold test specimens in a mold of suitable size andshape for the equipment to be used and 112 in. (38 mm) indepth. The cement shall be mixed with water in accordancewith Practice C163. Place the mold in a horizontal position ona piece of glass 14 in. (356 mm) or 15 in. (381 mm) square, orsli
24、ghtly larger than the specimen required. Place the mixedcement in the mold, trowel the top surface of the cementsmooth, and place a sheet of ordinary writing paper on top ofthe cement. Place a18 in. (3 mm) thick steel plate 14 in. (356mm) or 15 in. (381 mm) square, or slightly larger than thespecime
25、n required, having nine equally spaced holes316 in. (5mm) in diameter in the central area 10 in. (254 mm) indiameter, on top of the mold and use a pointed pin to puncturethe paper immediately under the holes in the steel plate. Invertthis entire assembly and remove the glass plate, trowel thesurface
26、 of the cement smooth and flush with the top of themold, and then carefully remove the mold. Place the perforatedplate with the molded cement on an open shelf of an ovenhaving a volume at least 50 times that of the specimens to bedried. The oven chamber shall be adequately vented in such amanner as
27、to ensure complete circulation of the atmosphere ofthe entire oven chamber preferably by fan or other forcedcirculation method. The test specimens shall remain in theoven for at least 48 h at a temperature of 215F (102C) to250F (121C). Upon removal from the oven, the surfaces ofthe specimens shall b
28、e made plane and parallel by cutting,sandpapering, or rubbing, or by a combination of thesemethods. The lateral dimensions of the specimens shall begoverned by the size of the apparatus.10.6.2 Temperature of test shall be in accordance withPractice C1058.10.7 Dry Adhesion to SteelTest Method C353.TA
29、BLE 1 Other RequirementsConsistencyMethod A, %Method B, in. (mm)35 to 457 (178) to 9 (229)Dry covering capacity, min, ft2, 1 in. in thickness per100 lb of dry cement (m2, 1 cm. in thickness per100 kg of dry cement)50 (26)Volume change upon drying, max,% 20Compressive strength, min, psi (kPa) at 5 %
30、defor-mation5 (34.5)Linear shrinkage max % 24 h at 1800F (980C) 5Apparent thermal conductivity, max, Btuin./hft2F (W/mK)At mean temperatures of:200F (95C) 0.95 (0.137)500F (260C) 1.10 (0.159)700F (370C) 1.20 (0.173)Dry adhesion to steel, min, psi(kPa) 3.5 (24.2)C196 00 (2010)211. Inspection11.1 The
31、following requirements are employed for purposesof acceptance sampling of lots or shipments of qualifiedcement:11.1.1 Dry Covering Capacity.11.1.2 Volume Change Upon Drying.12. Rejection and Rehearing12.1 Material that fails to conform to the requirements ofthis specification may be rejected. Reject
32、ion should be reportedto the manufacturer or supplier promptly and in writing. In caseof dissatisfaction with the results of the test, the manufactureror supplier may make claim for a rehearing.12.2 In case of rejection, the manufacturer or supplier shallhave the right to reinspect the rejected ship
33、ment and resubmitthe lot after removal of that portion not conforming to thespecified requirements.13. Certification13.1 When specified in the purchase order or contract, thepurchaser shall be furnished certification that samples repre-senting each lot have been either tested or inspected as directe
34、din this specification and the requirements have been met. Whenspecified in the purchase order or contract, a report of the testresults shall be furnished.14. Packaging14.1 Unless otherwise specified or agreed upon between thepurchaser and the manufacturer or supplier, the cement shall bepackaged in
35、 the manufacturers standard commercial contain-ers.15. Keywords15.1 cement-thermal insulating; expanded/exfoliated ver-miculite thermal insulating cement; sampling-thermalinsulating-thermal insulating materials; thermal conductivity;thermal insulating materials-cementASTM International takes no posi
36、tion respecting the validity 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 responsibili
37、ty.This standard is subject 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 AST
38、M International Headquarters. 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
39、shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).C196 00 (2010)3
