1、Designation: C399 98 (Reapproved 2012)Standard Practice forUse of Chemical-Resistant Resin Mortars1This standard is issued under the fixed designation C399; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、 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 information on the handling andproper use of chemical-resistant resin mortars such as thosecovered in Specifi
3、cation C395.NOTE 1Resin mortars and grouts are differentiated as follows: resingrouts are applied to the joints, generally14 in. (6 mm) wide, after thebrick or tile are set in place (grouting or tile setters method). Resinmortars are troweled onto the brick or tile, generally in a18 in. (3 mm)thickn
4、ess, before the brick are laid in place (buttering or bricklayersmethod). Refer to Practice C723.1.2 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 consider
5、ed 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. Sp
6、ecific precau-tions are given in Sections 5 and 5.2.2. Referenced Documents2.1 ASTM Standards:2C279 Specification for Chemical-Resistant Masonry UnitsC305 Practice for Mechanical Mixing of Hydraulic CementPastes and Mortars of Plastic ConsistencyC386 Practice for Use of Chemical-Resistant Sulfur Mor
7、tarC395 Specification for Chemical-Resistant Resin MortarsC410 Specification for Industrial Floor BrickC723 Practice for Chemical-Resistant Resin Grouts forBrick or TileC904 Terminology Relating to Chemical-Resistant Nonme-tallic MaterialsC980 Specification for Industrial Chimney Lining Brick3. Term
8、inology3.1 DefinitionsFor definitions of terms used in thispractice, see Terminology C904.4. Storage4.1 When stated on the package, the manufacturers recom-mendations shall be followed. In all cases, storage shall be ina dry place with containers tightly closed and away from openflames. Some resins
9、should be stored in a cool place attemperatures as low as 40 to 50F (5 to 10C) to extend theirshelf life. Powder or resin that has become wet or otherwisecontaminated shall not be used.5. Hazards5.1 Consult manufacturers Material Safety Data Sheet forprecautions to be taken when using chemical-resis
10、tant resinmortars.5.2 Solvents used for cleaning tools are generally flam-mable. (WarningOpen flames must be kept from the area.“No Smoking” signs should be posted.)6. Equipment6.1 For hand mixing, a shallow mortar box should beprovided. A suggested size is 2 ft2by 4 in. (600 mm2by 100mm) deep.6.2 E
11、quipment for power-mixing ranges from small mixers,such as described in Practice C305, to simple beaters used onlow-speed motors. A suitable container is a round-bottom panor a 5-gal (20-L) pail, which is commonly available.6.3 Equipment may be required for heating or coolingmaterials as conditions
12、dictate.6.4 All mixing equipment should be clean and dry.7. Mixing7.1 For hand mixing, measure the liquid into the mortar box,then stir the powder in gradually, working out all lumps and airbubbles. Mix with a masons trowel or other suitable tool.7.2 For power mixing, measure the liquid into the con
13、tainerand mix in the powder gradually and uniformly.7.3 Mortars shall be mixed in accordance with the manu-facturers specifications. It is recommended that some means1This practice is under the jurisdiction of ASTM Committee C03 on Chemical-Resistant Nonmetallic Materialsand is the direct responsibi
14、lity of SubcommitteeC03.02 on Monolithics, Grouts and Polymer Concretes.Current edition approved Aug. 1, 2012. Published September 2012. Originallyapproved in 1957. Last previous edition approved in 2008 as C399 98 (2008)1.DOI: 10.1520/C0399-98R12.2For referenced ASTM standards, visit the ASTM websi
15、te, www.astm.org, orcontact ASTM Customer Serivce 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 States
16、1of measuring be devised so that the batches are uniform.Simple volume measurements may be used, but weighing ispreferred. Consult the manufacturer if variations in proportionsare being considered.7.4 Batch size should be varied according to temperature. Inhot weather, batches may be as small as 10
17、lb (5 kg), and incold weather they may be increased to as much as 50 lb (23kg).7.5 No additives such as sand, portland cement, or watershould be added.7.6 Containers of resins and powders should be closed whennot being used.8. Handling8.1 Resin mortars cure very slowly at low temperatures. Ifwork mu
18、st be carried on at temperatures below 60F (16C),chemical-resistant construction units should be heated and thearea enclosed and heated to obtain proper cure. However,certain resin mortars can be used satisfactorily at lowertemperatures.8.2 Mortar should be transferred immediately from themixing ves
19、sel and spread in a thin layer on the mortar pan, asmortar heats up during setting and thick layers or large massesretain this heat. Retained heat shortens the working time.8.3 Mixed mortar that has become unworkable shall not beretempered with resin liquid but shall be discarded.8.4 When resin mort
20、ars are to be exposed to temperaturesbelow 60F (16C) or above 90F (32C) during mixing,application, or setting, special precautions are required. Themanufacturer should be consulted for recommendations.9. Laying Chemical-Resistant Brick or Tile9.1 Brick and tile are covered by Specifications C279,C41
21、0, and C980.9.2 The brick or tile shall be dry. Minimum and maximumtemperature of the brick or tile at the time of use shall be 50 to90F (10 to 32C). Sufficient time is required to establishtemperature equilibrium within the brick or tile.9.3 Walls with No Sulfur Back-JointSpread a bed-joint ofmorta
22、r the width of the brick or tile and14 to38 in. (6 to 10mm) thick. Butter one end and the back side of each brick ortile with approximately14 in. (6 mm) thickness of mortar.Press the brick or tile into the bed and against the wall andadjacent unit until the joint in each is as near to18 in. (3 mm)th
23、ick as good workmanship will permit. Trim off excess mortarand return it to the mortar board.9.4 Walls with Sulfur Back-JointSpread a bed-joint asdescribed in 9.3. Butter one end of each brick or tile and lay it14 in. (6 mm) away from the wall. After each course has beenlaid, pour the back-joint wit
24、h molten sulfur cement in accor-dance with the Practice C386.9.5 Floors With Bed-JointSpread the mortar on the floorto approximately18-in. (3-mm) thickness. Spread approxi-mately14 in. (6 mm) thickness of mortar on two adjacent edgesof the brick or tile. Press into the bed and against the startingcu
25、rb or brick until the joint is as near to18 in. (3 mm) thick asgood workmanship will permit. Trim off the excess mortar andreturn it to the mortar board.10. Cleaning Mortar From Chemical-Resistant Brick orTile10.1 Various compounds and application methods are avail-able from mortar manufacturers for
26、 masking brick or tile tokeep mortar from adhering to them. Such compounds may beremoved by steam or water after the joints have hardened.10.2 The manufacturer of the mortar should be consulted forthe method of cleaning mortar from the face of the brick or tilebefore hardening, since the cure of cer
27、tain mortars is affectedby contact with water.11. Cleaning the Equipment11.1 Clean equipment according to manufacturers recom-mendations. Remove hardened mortars from metal equipmentby sandblasting. Most solvents used for cleaning areflammable, and therefore precautions should be taken.(Warning, see
28、 1.3 and 5.2.)12. Curing12.1 Resin mortars are generally formulated to cure readyfor use in 24 to 48 h at normal temperatures. The manufacturershould be consulted for details.12.2 Methods are available for speeding the cure of resinmortars. Consult the manufacturer for details.12.3 The construction
29、should be protected from weather andwater, and from mechanical damage until the mortar is cured.13. Keywords13.1 chemical-resistant resin mortar; mortar applicationC399 98 (2012)2ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item me
30、ntionedin this standard. 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 committe
31、e and must be reviewed 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 meeti
32、ng of theresponsible technical 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
33、 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).C399 98 (2012)3
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