1、Designation:C32401(Reapproved 2014)Standard Test Method forFree Moisture in Ceramic Whiteware Clays1This standard is issued under the fixed designation C324;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A
2、number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the determination of freemoisture in ceramic whiteware clays.Whiteware clays may beshipped as a bulk shipment in lu
3、mps,a bulk shipment ofshredded or coarsely ground clay,or in bagged lots of groundor airfloated clay.Directions are given in this test method forobtaining representative samples of the clay shipment to beused in subsequent tests for the properties of the clay in theshipment.1.2 This standard does no
4、t purport to address all of thesafetyconcerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C3
5、32 Specification for Lightweight Aggregates for Insulat-ing Concrete3.Sampling3.1 The sample shall be obtained in accordance with Speci-fication C332.The sample submitted for testing shall weigh notless than 1000 g and shall be kept in an airtight container toprevent loss of water before testing.4.P
6、rocedure4.1 Remove the sample of clay from its container.Weighabout 500 g of the sample to the nearest 0.1 g.Spread out theweighed portion of the sample in a weighed shallow metal orporcelain container,and dry at 100 to 110C for 24 h in adrying oven.Reweigh the dried clay,as quickly as possible,toth
7、e nearest 0.1 g.5.Calculation5.1 Calculate the percentage of free moisture to the nearest0.1%as follows:Free moisture,dry weight basis,%5A 2 B!/B#3100(1)Free moisture,wet weight basis,%5A 2 B!/A#3100(2)where:A=“as-received”weight of the portion of the sample usedandB=weight of sample after drying.6.
8、Keywords6.1 ceramic whiteware clays;free moistureASTM International takes no position 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,
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11、make 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 con
12、tacting 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/).1This test method is under the jurisdiction
13、 ofASTM Committee C21 on CeramicWhitewares and Related Products and is the direct responsibility of SubcommitteeC21.04 on Raw Materials.Current edition approved Jan.1,2014.Published February 2014.Originallyapproved in 1953.Last previous edition approved in 2001 as C324 01(2007).DOI:10.1520/C0324-01R
14、14.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1
