ASTM_C_723_-_98_2012.pdf

Designation:C72398(Reapproved 2012)Standard Practice forChemical-Resistant Resin Grouts for Brick or Tile1This standard is issued under the fixed designation C723;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.Scope1.1 This practice provides detailed information on the han-dling and proper use of chemical-resistant resin grouts forfilling joints of chemical-resistant brick or tile such as thosecovered in Specification C658.NOTE1Resin grouts and mortars are differentiated as follows:Resingrouts are applied to joints,generally14in.(6 mm)wide,after the brickor tile are set in place and the setting bed has hardened(grouting ortilesetters method).Resin mortars are troweled onto the brick or tile insufficient quantity to achieve a18-in.(3-mm)thick joint after the brick ortile are laid in place(buttering or bricklayers method).(See PracticeC399.)1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.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:2C267 Test Methods for Chemical Resistance of Mortars,Grouts,and Monolithic Surfacings and Polymer ConcretesC398 Practice for Use of Hydraulic Cement Mortars inChemical-Resistant MasonryC399 Practice for Use of Chemical-Resistant Resin MortarsC658 Specification for Chemical-Resistant Resin Grouts forBrick or TileC904 Terminology Relating to Chemical-Resistant Nonme-tallic Materials3.Terminology3.1 DefinitionsFor definitions of terms used in thispractice,see Terminology C904.4.Storage4.1 When stated on the package,the manufacturers recom-mendations should be followed.In all instances,storage shouldbe in a dry place with containers tightly closed and away fromopen flames.Powder or resin that has become contaminatedshould not be used.5.Apparatus5.1 For hand mixing,use clean nonabsorbent pails or mortarboxes.Paddles,trowels,or spatulas are suggested mixing tools.5.2 For power mixing,use suitable size mixing equipment,such as that shown in Fig.1.Operate at speeds so as to preventair entrapment.6.Procedure6.1 Mixing:6.1.1 Condition and mix the grout in accordance with themanufacturers specification.Mixed grout should be ofuniform,smooth consistency,free of lumps,with as littleentrapped air as possible.Clean equipment between batches toprevent buildup of partially set grout.6.1.2 For hand mixing,measure the liquid component(s)into the mixing container,add the powder slowly,and mixthoroughly.6.1.3 For power mixing,measure the liquid component(s)into the mixing container,add the powder slowly and mixthoroughly to ensure a uniform mix.Avoid excessive airentrapment.Follow the recommendations of 5.2.6.1.4 Vary the batch sizes according to temperature.In hotweather,reduce batch sizes;in cold weather,batch sizes maybe increased.6.1.5 In hot weather,the liquid component(s)of the groutmay be cooled by partially immersing the container in an icebath to extend the working life.Take care to ensure that thecomponents are not contaminated with ice or water.Refrigera-tion may be used.6.2 Handling:1This practice is under the jurisdiction of ASTM Committee C03 on Chemical-Resistant Nonmetallic Materialsand is the direct responsibility of SubcommitteeC03.02 on Monolithics,Grouts and Polymer Concretes.Current edition approved Aug.1,2012.Published September 2012.Originallyapproved in 1972.Last previous edition approved in 2008 as C723 98(2008).DOI:10.1520/C0723-98R12.2For 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 6.2.1 When installing resin grouts at temperatures below60F(16C)or above 90F(32C),special hardening systemsor precautions may be required.Consult manufacturer forrecommendations.6.2.2 Discard mixed grout that has become unworkable.6.3 Setting Brick or Tile:6.3.1 Various materials such as paraffin wax or other com-pounds and methods of application are available from groutmanufacturers to ensure that the resin grout does not adhere tothe face of the brick or tile.It is imperative that only the faceof the brick or tile be protected prior to placing into the settingbed.Care must be taken to ensure that wax is not applied to thebrick