1、Designation: C 723 98 (Reapproved 2003)Standard Practice forChemical-Resistant Resin Grouts for Brick or Tile1This standard is issued under the fixed designation C 723; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of la
2、st 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 practice provides detailed information on the han-dling and proper use of chemical-resistant resin grouts forfilli
3、ng joints of chemical-resistant brick or tile such as thosecovered in Specification C 658.NOTE 1Resin grouts and mortars are differentiated as follows: Resingrouts are applied to joints, generally14 in. (6 mm) wide, after the brickor tile are set in place and the setting bed has hardened (grouting o
4、rtilesetters 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 PracticeC 399.)1.2 The values stated in inch-pound units are to be regardedas the stand
5、ard. 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 establish appro-priate safety and health practices and determine the
6、 applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C 267 Test Method for Chemical Resistance of Mortars,Grouts, Monolithic Surfacings, and Polymer ConcretesC 398 Practice for Use of Hydraulic Cement Mortars inChemical-Resistant MasonryC 399 Practice for
7、 Use of Chemical-Resistant Resin Mor-tarsC 658 Specification for Chemical-Resistant Resin Groutsfor Brick or TileC 904 Terminology Relating to Chemical-Resistant Non-metallic Materials3. Terminology3.1 DefinitionsFor definitions of terms used in this prac-tice, see Terminology C 904.4. Storage4.1 Wh
8、en 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 nonabs
9、orbent 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 th
10、emanufacturers specification. Mixed grout should be of uni-form, smooth consistency, free of lumps, with as little en-trapped 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
11、 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 temperatur
12、e. In hotweather, reduce batch sizes; in cold weather, batch sizes maybe increased.1This practice is under the jurisdiction of ASTM Committee C03 on Chemical-Resistant Nonmetallic Materials and is the direct responsibility of SubcommitteeC03.02 on Mortar and Monolithics.Current edition approved Oct.
13、 1, 2003. Published October 2003. Originallyapproved in 1972. Last previous edition approved in 1998 as C 723 98.2For 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
14、 standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.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
15、the working life. Take care to ensure that thecomponents are not contaminated with ice or water. Refrigera-tion may be used.6.2 Handling:6.2.1 When installing resin grouts at temperatures below60F (16C) or above 90F (32C), special hardening systemsor precautions may be required. Consult manufacturer
16、 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
17、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 or tile surface which is to be grouted.6.3.1.1 When grouting with water-washable grouts, waxingthe face of the brick or
18、 tile may not be required.6.3.2 Consult the manufacturer for recommendations on theappropriate substrate, its preparation, and suitable setting bedsfor the substrate.6.3.3 Sand-Cement Setting BedSet the brick or tile into astiff, moist sand-cement setting bed as described in PracticeC 398. The brick
19、 or tile is bedded and tamped just deeplyenough to ensure full bedding and to permit leveling whilemaintaining14-in. (6-mm) wide joints. If necessary, rakeexcess sand-cement out of the joints in order to ensure full jointdepth. Excess setting bed mortar in the joints or the use ofspacer mixes is not
20、 permitted. After the bed has set, apply thegrout to the cleaned joints. The grout manufacturer mayrecommend acid-washing the open joints with dilute acid suchas hydrochloric (muriatic), sulfamic, or phosphoric, prior togrouting the open joints. If acid washing is used, thoroughlyflush the area with
21、 potable water to ensure removal of anyresidual acid and allow joints to dry before grouting.6.3.4 Chemical-Resistant Setting BedsSet the brick or tileinto a18-in. (3-mm) thick layer of catalyzed thermosettingresin mortar and tamp to permit leveling while maintainingapproximately14 in. (6 mm) wide j
22、oints. If service conditionsNOTEThese mechanical mixers are packaged in standard 5-gal pails which serve as the mixing drum. The mixers are available in various horsepowerand rpm for mixing resin mortars, grouts and monolithics.FIG. 1 Mechanical MixersC 723 98 (2003)2to which the floor will be subje
23、cted necessitate a full andcontinuous bed, back buttering of the brick or tile is required.Some systems may require a chemical-resistant membrane,depending upon the service conditions or the type of materialbeing used.6.4 Grouting Brick or Tile:6.4.1 Grout the brick or tile after the bed has set.6.4
24、.2 The temperature of the substrate and materials shouldbe 60 to 90F (16 to 32C). Setting time of resin grouts is afunction of temperature, that is, the lower the temperature, theslower the set; the higher the temperature, the faster the set.Special hardening systems are available to hasten or retar
25、d thecure of resin grouts at various temperatures. Consult the groutmanufacturer for details.6.4.3 Mix the resin grout in accordance with the manufac-turers recommendation. Place the freshly mixed resin groutonto the surface of the previously set brick or tile andimmediately spread and work the grou
26、t into the open jointswith a rubber faced trowel.6.4.4 To facilitate cleaning, it is important to leave as littleresin grout as possible on the surface of the brick or tile.6.5 Cleaning Grout from Brick or Tile:6.5.1 Inspect floor to ensure that the grouted joints aresufficiently hard to permit clea
27、ning of the floor. Removeparaffin wax or other compounds from surface of brick or tileusing steam, hot water, or other methods recommended by thegrout manufacturer.6.5.2 When grouting with water-washable grouts, cleaningof floor must take place before grout sets, in accordance withthe manufacturers
28、directions.6.6 Cleaning of EquipmentMost grouts may be removedfrom equipment with soap and water or suitable solvents beforethe grouts begin to set.6.6.1 WarningProvide adequate ventilation and keepopen flames away when flammable solvents are in use. Disposeof used solvents in accordance with applic
29、able local govern-ment regulations.7. Curing7.1 Resin grouts are generally formulated to attain an initialset in 10 to 20 h at 73 6 4F (23 6 2C).7.2 The freshly installed brick or tile should be protectedfrom damage or contamination until the grout has attained itsinitial set. Keep all traffic, cons
30、truction equipment, water, oil,grease, and similar contaminants, etc. away from the installa-tion during the curing process.8. Chemical Resistance8.1 Specific recommendations should be obtained from themanufacturer. Chemical resistance of grout may be determinedin accordance with Test Method C 267.
31、If the floor is installedwithout an impervious membrane between the substrate andthe brick or tile, the chemical resistance of the completedinstallation may be considerably less than that of the chemicalresistant joint material. Penetration of chemicals may occurthrough the brick, tile, or joints th
32、at can cause degradation ofsubstrate. In severe chemical service, the installation must bemade utilizing a membrane between the brick or tile and thesubstrate. Installations may also be made utilizing the butteringmethod. (See Practice C 399.)9. Keywords9.1 brick mortar; chemicalresistant; membrane;
33、 resingrout; setting bed; tile groutASTM 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, and the ris
34、kof 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 every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of thi
35、s standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake
36、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 723 98 (2003)3
