1、Designation: C 399 98 (Reapproved 2003)Standard Practice forUse of Chemical-Resistant Resin Mortars1This standard is issued under the fixed designation C 399; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revisio
2、n. 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 information on the handling andproper use of chemical-resistant resin mortars such as thosecovered in Spec
3、ification C 395.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)th
4、ickness, before the brick are laid in place (buttering or bricklayersmethod). Refer to Practice C 723.1.2 The values stated in inchpound units are to be regardedas the standard. The values given in parentheses are providedfor information only.1.3 This standard does not purport to address all of thes
5、afety 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. Specific precau-tions are given in Sections 5 and 11.2. Referenced Docu
6、ments2.1 ASTM Standards:2C 279 Specification for Chemical-Resistant Masonry UnitsC 305 Practice for Mechanical Mixing of Hydraulic CementPastes and Mortars of Plastic ConsistencyC 386 Practice for Use of Chemical-Resistant Sulfur MortarC 395 Specification for Chemical-Resistant Resin MortarsC 410 Sp
7、ecification for Industrial Floor BrickC 723 Practice for Chemical-Resistant Resin Grouts forBrick or TileC 904 Terminology Relating to Chemical-Resistant Non-metallic MaterialsC 980 Specification for Industrial Chimney Lining Brick3. Terminology3.1 DefinitionsFor definitions of terms used in this pr
8、ac-tice, see Terminology C 904.4. 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 should be stored in a cool place attemperatures as low as 4
9、0 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-resistant resinmortars.5.2 Solvents used for cleaning tools are
10、generally flam-mable.NOTE 2Caution: Open flames must be kept from the area. “NoSmoking” 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 Equipment for power-mixing ranges from small mixers,suc
11、h as described in Practice C 305, 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 dictate.6.4 All mixing equipment should be clean and
12、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 containerand mix in the powder gradually and uniformly.1
13、This 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. 1, 2003. Published October 2003. Originallyapproved in 1957. Last previous edition
14、approved in 1998 as C 399 98.2For referenced ASTM standards, visit the ASTM website, 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.1Copyright ASTM International, 1
15、00 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.3 Mortars shall be mixed in accordance with the manu-facturers specifications. It is recommended that some meansof measuring be devised so that the batches are uniform.Simple volume measurements may be used, but wei
16、ghing 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 lb (5 kg), and incold weather they may be increased to as much as 50 lb (23kg).7.5 No additives such as
17、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 must be carried on at temperatures below 60F (16C),chemical-resistant construction units should be heated
18、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 vessel and spread in a thin layer on the mortar pan, asmortar heats up during setting and thick layers or l
19、arge 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 mortars are to be exposed to temperaturesbelow 60F (16C) or above 90F (32C) during mixing,application, or se
20、tting, 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 C 279,C 410, and C 980.9.2 The brick or tile shall be dry. Minimum and maximumtemperature of the brick or tile a
21、t 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 ofmortar the width of the brick or tile and14 to38 in. (6 to 10mm) thick. Butter one end and the back side o
22、f 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)thick as good workmanship will permit. Trim off excess mortarand return it to the mortar board.9.4 Wall
23、s 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 with molten sulfur cement in accor-dance with the Practice C 386.9.5 Floors With Bed-JointSpread the mor
24、tar 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 startingcurb or brick until the joint is as near to18 in. (3 mm) thick asgood workmanship will permit. Trim of
25、f 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 masking brick or tile tokeep mortar from adhering to them. Such compounds may beremoved by steam or
26、 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 certain mortars is affectedby contact with water.11. Cleaning the Equipment11.1 Clean equipment accordi
27、ng to manufacturers recom-mendations. Remove hardened mortars from metal equipmentby sandblasting. Most solvents used for cleaning are flam-mable, and therefore precautions should be taken. (Caution,see 1.2 and Note 2.)12. Curing12.1 Resin mortars are generally formulated to cure readyfor use in 24
28、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 should be protected from weather andwater, and from mechanical damage until the mortar is cured
29、.13. Keywords13.1 chemical-resistant resin mortar; mortar applicationASTM 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 an
30、y 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 committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are i
31、nvited 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 meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not receiv
32、ed 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 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 399 98 (2003)2
