1、Designation: C 163 05Standard Practice forMixing Thermal Insulating Cement Samples1This standard is issued under the fixed designation C 163; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in pa
2、rentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers mixing thermal insulating cementsamples with water in the preparation of specimens for use inall tests on the cement.1.2 The
3、values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are providedfor information only.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to esta
4、blish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C 168 Terminology Relating to Thermal Insulation3. Terminology3.1 Definitions: Terminology C 168 shall be considered asapplying to the ter
5、ms used in this practice.4. Significance and Use4.1 Insulating cement must be mixed with water and moldedto prepare for testing.5. Apparatus5.1 Mixing Surface or Pan, nonabsorbent and corrosion-resistant surface or shallow pan approximately 3 ft (0.9 m)square.5.2 Trowels, 16-in. (about 400-mm) recta
6、ngular plastererstrowel, and a 9-in. (about 230-mm) pointed trowel.5.3 Scales, accurate to within 0.5 oz (14.1 g) with aminimum capacity of 15 lb (about 6.8 kg).5.4 Water Container, suitable for holding approximately 2gal (about 8 L) of water.5.5 Mold, constructed of either wood or metal.6. Mixing W
7、ater6.1 The mixing water shall be equal in quality to that usedfor domestic purposes. Its temperature shall be between 70 and75F (21 and 24C). The quantity used shall be that whichgives the consistency as recommended by the manufacturer.7. Procedure7.1 Test at least one specimen from each lot of cem
8、entunless otherwise agreed upon between user and supplier or asshown otherwise in a material specification.7.2 Weigh the specimen (at least 3 lb (1.4 kg) of dry cementand place it on a smooth, nonabsorbent, and corrosion-resistantsurface.7.3 Form a crater in the center of the dry cement. Pour themix
9、ing water slowly into the crater and determine the weightused.7.4 Fold the material on the outer edge into the crater bymeans of the rectangular trowel.7.5 After the water has been in contact with the cement forthe period of time recommended by the manufacturer, mixrapidly with the rectangular trowe
10、l until the entire batch is ofuniform consistency.7.6 Mold the cement specimen immediately after mixing orthe time frame recommended by the manufacturer.8. Preparation of Dried Specimens for Later Tests8.1 Cover a piece of flat, heavy-gage metal with wax paper.Place a flat mold 2 in. (51 mm) deep on
11、 the covered metalplate.8.2 Using the rectangular trowel, place the wet mixedcement in the mold and trowel it sufficiently to ensure a solid,uniform block with a minimum of voids. Finish by trowelingthe top of the cement flush with the mold. Use the pointedtrowel to pack small quantities of cement t
12、hat are inaccessibleto the large rectangular trowel.8.3 Allow the filled mold to remain at room temperature for24 h.1This practice is under the jurisdiction of ASTM Committee C16 on ThermalInsulation and is the direct responsibility of Subcommittee C16.31 on Chemical andPhysical Properties.Current e
13、dition approved April 1, 2005. Published April 2005. Originallyapproved 1964. Last previous edition approved in 1997 as C 163 88 (1997).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume in
14、formation, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.8.4 Remove the mold. Place the wet molded block andsupporting metal plates in a vented oven maintained at atem
15、perature between 215 and 250F (102 and 121C). Dry toconstant weight.8.5 Cut the dry molded block to the desired dimensionsusing a band saw, high-speed abrasive wheel, or other suitablemeans that will not subject the block to damaging stresses.Remove a minimum of material from the top to obtain asmoo
16、th, flat surface, and any excess material from the bottomof the molded sample to produce the final thickness desired.9. Keywords9.1 thermal insulating cementASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standar
17、d. 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 subject to revision at any time by the responsible technical committee and must be reviewed
18、 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 Headquarters. Your comments will receive careful consideration at a meeting of theresponsible t
19、echnical 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 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 163 052
