ASTM_C_511_-_13.pdf

Designation:C51113Standard Specification forMixing Rooms,Moist Cabinets,Moist Rooms,and WaterStorage Tanks Used in the Testing of Hydraulic Cementsand Concretes1This standard is issued under the fixed designation C511;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 parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification includes requirements for mixingrooms where paste and mortar specimens are prepared;and formoist cabinets,moist rooms,and water storage tanks wherepaste,mortar,and concrete specimens are stored.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.Values in SI units shall be obtained by measurementin SI units or by appropriate conversion,using the Rules forConversion and rounding given in Standard IEEE/ASTM SI10,of measurements made in other units.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 establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C51 Terminology Relating to Lime and Limestone(as usedby the Industry)E77 Test Method for Inspection and Verification of Ther-mometersIEEE/ASTM SI 10 Standard for Use of the InternationalSystem of Units(SI):The Modern Metric System3.Terminology3.1 Definitions:3.1.1 mixing room,na room with controlled temperatureand relative humidity where cement paste and mortar speci-mens are prepared.3.1.2 moist cabinet,na compartmented storage facility ofmoderate dimensions with controlled temperature and relativehumidity.3.1.3 moist room,na“walk-in”storage facility withcontrolled temperature and relative humidity,commonly calleda fog room when the prescribed relative humidity is achievedby the atomization of water.4.Requirements for Cement Mixing Rooms4.1 The temperature of the air in the vicinity of the mixingslab,molds,and base plates shall be maintained at 23.0 6 4.0C and at a relative humidity of not less than 50%.4.2 The temperature of the mixing water used to preparecement paste and mortar specimens shall be 23.0 6 2.0 C.5.Temperature Measuring Devices5.1 Reference Temperature Measuring Deviceused toverify the temperature recorder,must be accurate and readableto 0.5 C.A copy of the certificate or report which verifies theaccuracy shall be available in the laboratory.NOTE1The ice-point method described in Test Method E77 may beused to ensure that no damage to the reference thermometer has occurredduring shipping.5.2 Temperature Recordershall record temperatures every15 min or less and shall be accurate and readable to 1 C.Thedata from the recorder shall be evaluated at a minimum of onceeach week.A record of this evaluation documenting the datechecked,a confirmation that the data is within the requiredtemperature range,and the name of the individual performingthis evaluation shall be maintained in the laboratory.(Note 2)NOTE2This requirement may be satisfied by an initialed and datedtemperature recorder chart.Brief changes in the temperature due to dooropenings should be ignored.5.2.1 The temperature recorder shall be verified at leastevery six months or whenever there is a question of accuracy.5.2.1.1 For moist cabinets and rooms,position the referencetemperature measuring device in a readable position in air asnear as practical to the temperature recorder probe.Keep thedoor closed for at least 5 min prior to taking readings.Recordthe temperature readings of both the temperature recorder and1This specification is under the jurisdiction of ASTM Committee C01 onCement and is the direct responsibility of Subcommittee C01.95 on Coordination ofStandards.Current edition approved Dec.1,2013.Published January 2014.Originallyapproved in 1968.Last previous edition approved in 2009 as C51109.DOI:10.1520/C0511-13.2For 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.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 the reference temperature measuring device.When takingthese readings,the reference temperature measuring deviceshall remain in the moist cabinet or room and read immediatelyupon opening the door.5.2.1.2 For water storage tanks,position the referencetemperature measuring device in a readable position in water asnear as practical to the temperature recorder probe.Withoutremoving the reference temperature measuring device from thewater,record the temperature r