1、Designation: C 196 00 (Reapproved 2005)Standard Specification forExpanded or Exfoliated Vermiculite Thermal InsulatingCement1This standard is issued under the fixed designation C 196; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision,
2、 the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript 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. Scope1.1 This specification cove
3、rs 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 the standard. The SI equivalents of inch-pound units aregiven in parentheses and may be approximate.1.3 The followi
5、ng 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 standard to establish appropriate safety and healthpra
6、ctices 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 appro-priate current information regarding any know
7、n 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:2C 163 Practice for Mixing Thermal Insulating CementSamplesC 166 Test Metho
8、d for Covering Capacity and VolumeChange Upon Drying of Thermal Insulating CementC 168 Terminology Relating to Thermal InsulationC 177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC 353 Test Method for Adhesion of
9、Dried Thermal Insulat-ing or Finishing Cement3C 354 Test Method for Compressive Strength of ThermalInsulating or Finishing Cement3C 356 Test Method for Linear Shrinkage of PreformedHigh-Temperature Thermal Insulation Subjected to Soak-ing HeatC 390 Practice for Sampling and Acceptance of PreformedTh
10、ermal Insulation LotsC 405 Practice for Estimating Consistency of Wet-MixedThermal Insulating CementC 518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter ApparatusC 1058 Practice for Selecting Temperatures for Reportingand Evaluating Thermal Properties of
11、Thermal Insulation3. Terminology3.1 Definitions:3.2 Terminology C 168 shall be considered as applying tothe terms used in this specification.4. Materials and Manufacture4.1 The cement shall be composed predominantly of ex-panded or exfoliated vermiculite, with a suitable proportion ofheat-resistant
12、binder. Asbestos shall not be used as an ingredi-ent or component 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 c
13、onsistency determined in accordance withSection 10.1This specification is under the jurisdiction of ASTM Committee C-16 onThermal Insulation and is the direct responsibility of Subcommittee C16.20 onHomogeneous Inorganic Thermal Insulations.Current edition approved Sept. 1, 2005. Published October 2
14、005. Originallyapproved in 1944. Last previous edition approved in 2000 as C 196 00.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary p
15、age onthe ASTM website.3Withdrawn.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6. Qualification Requirements6.1 The following requirements are employed for purposesof initial material or product qualification:6.1.1 Consistency,6.1
16、.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, for the purpose of testsusing one of the following procedures.7.1.1 Inspection Requirements:7.1.1.1 Use Practice C 390. Each bag shall repres
17、ent 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 not conform to the specifications.The acceptable quality level (AQL) and limiting quality level(LQL) of an acceptance sampling plan, expres
18、sed 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 Requirements:7.1.2.1 Use the average of the test data from the number oftest specimens required by the appropriate test method torepresent t
19、he 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. Number 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 specificatio
20、n, 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 specification.9. Specimen Preparation9.1 Mix specimens for testing in accordance with PracticeC 163.9.2 The amount of water to be used in preparing
21、 samples forall tests shall be that amount which results in the specifiedconsistency, determined in accordance with Practice C 405.10. Test Methods10.1 Consistency Practice C 405.10.2 Dry Covering CapacityTest Method C 166.10.3 Volume Change upon DryingTest Method C 166.10.4 Compressive StrengthTest
22、 Method C 354.10.5 Linear Shrinkage Test Method C 356.10.6 Apparent Thermal ConductivityTest Method C 177or Test Method C 518, except prepare the test specimens asfollows: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 ceme
23、nt shall be mixed with water in accordancewith Practice C 163. Place the mold in a horizontal position ona piece of glass 14 in. (356 mm) or 15 in. (381 mm) square, orslightly larger than the specimen required. Place the mixedcement in the mold, trowel the top surface of the cementsmooth, and place
24、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 thespecimen required, having nine equally spaced holes316 in. (5mm) in diameter in the central area 10 in. (254 mm) indiameter, on top of th
25、e 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 of the cement smooth and flush with the top of themold, and then carefully remove the mold. Place the perforatedplate with the mo
26、lded 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 to ensure complete circulation of the atmosphere ofthe entire oven chamber preferably by fan or other forcedcirculation method. Th
27、e 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 be made plane and parallel by cutting,sandpapering, or rubbing, or by a combination of thesemethods. The lateral dimensions of the
28、specimens shall begoverned by the size of the apparatus.10.6.2 Temperature of test shall be in accordance withPractice C 1058.10.7 Dry Adhesion to SteelTest Method C 353.11. Inspection11.1 The following requirements are employed for purposesof acceptance sampling of lots or shipments of qualifiedcem
29、ent: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. Rejection should be reportedto the manufacturer or supplier promptly and in writing. In caseof dissatisfaction wi
30、th 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 shipment and resubmitthe lot after removal of that portion not conforming to thespecified requirements.TABLE 1
31、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 % defor-
32、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)C 196 00 (2005)213. Certification13.1 When s
33、pecified in the purchase order or contract, thepurchaser shall be furnished certification that samples repre-senting each lot have been either tested or inspected as directedin this specification and the requirements have been met. Whenspecified in the purchase order or contract, a report of the tes
34、tresults shall be furnished.14. Packaging14.1 Unless otherwise specified or agreed upon between thepurchaser and the manufacturer or supplier, the cement shall bepackaged in the manufacturers standard commercial contain-ers.15. Keywords15.1 cement-thermal insulating; expanded/exfoliated ver-miculite
35、 thermal insulating cement; sampling-thermalinsulating-thermal insulating materials; thermal conductivity;thermal insulating materials-cementASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this
36、 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 subject to revision at any time by the responsible technical committee and must be reviewed every five year
37、s 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 Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committ
38、ee, 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 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).C 196 00 (2005)3
