1、Designation: C 449 07Standard Specification forMineral Fiber Hydraulic-Setting Thermal Insulating andFinishing Cement1This standard is issued under the fixed designation C 449; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the ye
2、ar 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.1. Scope1.1 This specification covers mineral fiber (rock or slag)insulating and finishing cement shipped in dry-mix form,i
3、ncluding hydraulic-setting binder, which, when mixed withwater and applied in accordance with the manufacturersdirections, affords a smooth surface as a final finish for heatedsurfaces up to 1200 F (649 C) for specific applications. Theactual temperature limit shall be agreed upon between thepurchas
4、er and the manufacturer.NOTE 1Precautionary measures should be taken with this material aswith other hydraulic-setting mixtures. This material should be used withinthe time period recommended by the manufacturer.1.2 The values stated in inch-pound units are to be regardedas standard. The values give
5、n in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 The following safety hazards caveat pertains only to thetest method (Section 10) described in this specification: Thisstandard does not purport to address all of the saf
6、ety concerns,if any, associated with its use. It is the responsibility of the userof this standard 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,
7、 and systems pose safety or healthproblems, the manufacturer shall provide the user with appro-priate current information regarding any known problemsassociated with the recommended use of the companysproducts and shall also recommend protective measures to beemployed in their safe utilization. The
8、user shall establishappropriate safety and health practices and determine theapplicability of regulatory requirements prior to use.2. Referenced Documents2.1 ASTM Standards:2C 163 Practice for Mixing Thermal Insulating CementSamplesC 166 Test Method for Covering Capacity and VolumeChange Upon Drying
9、 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 356 Test Method for Linear Shrinkage of PreformedHigh-Temperature Thermal Insulation
10、 Subjected to Soak-ing HeatC 390 Practice for Sampling and Acceptance of ThermalInsulation LotsC411 Test Method for Hot-Surface Performance of High-Temperature Thermal InsulationC 518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter ApparatusC 795 Specifica
11、tion for Thermal Insulation for Use in Con-tact with Austenitic Stainless SteelC 1045 Practice for Calculating Thermal TransmissionProperties Under Steady-State ConditionsC 1058 Practice for Selecting Temperatures for Evaluatingand Reporting Thermal Properties of Thermal InsulationC 1114 Test Method
12、 for Steady-State Thermal TransmissionProperties by Means of the Thin-Heater ApparatusE 136 Test Method for Behavior of Materials in a VerticalTube Furnace at 750C3. Terminology3.1 DefinitionsDefinitions found in Terminology C 168shall be considered as applying to the terms used in thisspecification
13、.1This specification is under the jurisdiction of ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcommittee C16.20 onHomogeneous Inorganic Thermal Insulations.Current edition approved Nov. 15, 2007. Published December 2007. Originallyapproved in 1960. Last previous edi
14、tion approved in 2000 as C 449/C 449M 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 page onthe ASTM website.1Copyright ASTM Inte
15、rnational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4. Materials and Manufacture4.1 Mineral fiber insulating and finishing cement shall becomposed of mineral fiber and suitable inorganic fillers,premixed with a hydraulic setting binder such that when mixedw
16、ith clean, fresh water, the cement will attain its initial set inapproximately 2 to4hasusually applied.4.2 The mineral fiber shall consist of rock or slag or glassprocessed from a molten state into fibrous form.4.3 Asbestos shall not be used as an ingredient or compo-nent part in the manufacture of
17、this product.4.4 Ceramic fiber shall not be used as an ingredient orcomponent part in the manufacture of this product.WarningIn the presence of moisture or water, a hydraulic-setting binder, usually portland cement, will chemically reactwith aluminum-containing materials such as aluminum laggingand
18、powdered aluminum pigmented paints or coatings.5. Other Requirements5.1 The cement shall conform to the requirements given inTable 1. Conformance shall be based on results of tests onspecimens prepared in accordance with 9.1.5.2 Maximum Use TemperatureWhen tested in accor-dance with 10.5, the dried
19、cement shall not warp, flame, orglow during hot surface exposure. No evidence of melting orfiber degradation shall be evident upon post-test inspection.5.3 Non-combustibilityWhen tested in accordance with10.6, the dried cement specimen, shall conform to the require-ments of Test Method E 136 .5.4 Wh
20、en the cement is to be used in contact with austeniticstainless steel, distilled or demineralized water shall be usedfor mixing. The cured and dried product, processed in accor-dance with Section 9 on Specimen Preparation, shall conformto the requirements of Specification C 795.6. Qualification Requ
21、irements6.1 The following requirements are employed for purposesof initial material or product qualifications:6.1.1 Dry covering capacity,6.1.2 Volume change upon drying,6.1.3 Linear shrinkage, and6.1.4 Apparent thermal conductivity.7. Sampling7.1 The cement shall be sampled for acceptance tests ina
22、ccordance with Table 1 (Sampling Plan and AcceptanceCriteria for Inspection Requirements) of Practice C 390, witheach bag representing a shipping unit.7.2 The test specimen shall be taken from the middle of abag, so as to be representative of material from the entire bag.A “grain thief” or equivalen
23、t shall be used to obtain thespecimen from the bag.8. Number of Tests and Retests8.1 The number of tests shall be as required in 7.1 or asotherwise agreed to between the manufacturer and the user.8.2 If the average of the test data obtained on the requirednumber of specimens fails to comply with the
24、 requirements ofTable 1, the lot shall be resampled and retested. The results ofthe retest shall be averaged with the results of the original teststo determine compliance with this specification.9. Specimen Preparation9.1 Allow dry cement to expand/swell by standing for atleast 15 min. then mix ceme
25、nt with water, and mold, cure, dryand cut in accordance with Practice C 163, to produce theappropriate size and shape specimens, for testing as specifiedbelow.10. Test Methods10.1 Dry Covering CapacityTest Method C 166.10.2 Volume Change Upon DryingTest Method C 166.10.3 Linear ShrinkageTest Method
26、C 356.10.4 Apparent Thermal Conductivity10.4.1 The thermal conductivity as a function of tempera-ture for the representative specimens shall be determined withdata obtained from a series of thermal tests utilizing TestMethods C 177, C 518,orC 1114 as appropriate for thematerial under study. Specimen
27、 shall be tested at a maximumthickness of 2 in. (51 mm).10.4.1.1 Test Method C 518 shall not be used at tempera-tures or resistances other than those in the range of thecalibration.10.4.1.2 Test Method C 1114 shall not be used at tempera-tures or resistance ranges other than those with comparableres
28、ults to Test Method C 177.10.4.2 The test method selected shall have proven correla-tion with Test Method C 177 over the temperature range ofconditions used. In cases of dispute, Test Method C 177 shallbe considered as the final authority for material having flatgeometry.10.4.3 Practice C 1058 shall
29、 be used to obtain recom-mended test temperature combinations for testing purposes.10.4.4 As specified in Practice C 1045, the range of testconditions must include at least one test where the hot surfacetemperature is greater than, or equal to, the hot limit of thetemperature range of desired data a
30、nd at least one test wherethe cold surface temperature is less than, or equal to, the coldlimit of the temperature range desired. Additional tests, at leasttwo, shall be distributed somewhat evenly over the rest of thetemperature range.10.4.5 Conduct the final analysis of the thermal data inaccordan
31、ce with Practice C 1045 to generate a thermal con-ductivity versus temperature relationship for the specimen.TABLE 1 Physical RequirementsDry covering capacity min ft2 1 in. thickness per 100 lb of drycement (m2 1 cm thickness per 100 kg of dry cement)24 (12.5)Volume change (shrinkage) upon drying,
32、max % 10.0Linear shrinkage (length) after 24 h heat soak at 1200F (649C),max %5.0Apparent thermal conductivity, max Btuin./hft2F(W/mK):Mean temperature F (C),75 (24) 0.95 (0.137)200 (93) 1.00 (0.144)400 (204) 1.10 (0.159)700 (371) 1.30 (0.188)C44907210.4.6 The final step of Practice C 1045 analysis
33、is tocalculate the thermal conductivity using the equations gener-ated at a set of mean temperatures for comparison to thespecification.NOTE 2Caution: While it is recommended that the specification databe presented as conductivity versus temperature, several existing specifi-cations may contain mean
34、 temperature data from tests conducted atspecific hot and cold surface temperatures. In these cases, the conductivityas a function of temperature from the Practice C 1045 analysis mayprovide different results. To insure that the data is compatible, a PracticeC 680 analysis, using the conductivity ve
35、rsus temperature relationshipfrom Practice C 1045 and the specific hot and cold surface temperatures,is required to determine the effective conductivity for comparison to thespecification requirements.10.5 Maximum Use TemperatureShall be tested, in accor-dance with Test Method C411at the insulations
36、 maximumuse temperature and at the manufacturers maximum recom-mended thickness at that temperature. No special requirementsfor heat up of material shall be specified by the manufacturer.10.6 Non-combustibility Test Method E 136.11. Inspection11.1 The following requirements are employed for purposes
37、of 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 Failure to conform to the requirements in this specifi-cation shall constitute cause for rejection. Rejection shall bereported to the producer
38、or supplier promptly and in writing.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.13. Certification13.1 When specified in the purchase order
39、or contract, thepurchaser shall be furnished with certification that samplesrepresenting each lot have been either tested or inspected asdirected in this specification, and the requirements have beenmet. When specified in the purchase order or contract, a reportof the test results shall be furnished
40、.14. Packaging14.1 Unless otherwise specified or agreed upon by thepurchaser and the manufacturer or supplier, the cement shall bepackaged in the manufacturers standard commercial contain-ers.15. Keywords15.1 cement; finishing; hydraulic-setting; insulating; min-eral fiber; thermal; thermal conducti
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44、mittee 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).C449073
