1、Designation: C 386 93 (Reapproved 2008)Standard Practice forUse of Chemical-Resistant Sulfur Mortar1This standard is issued under the fixed designation C 386; 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 () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice provides detailed information on the han-dling, installation, and proper use of chemical-resistant sulfurmortar such
3、 as those covered in Specification C 287.1.2 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 addres
4、s 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. For specific safetyprecautions, see Section 5.2. Reference
5、d Documents2.1 ASTM Standards:2C 267 Test Methods for Chemical Resistance of Mortars,Grouts, and Monolithic Surfacings and Polymer ConcretesC 287 Specification for Chemical-Resistant Sulfur MortarC 395 Specification for Chemical-Resistant Resin MortarsC 399 Practice for Use of Chemical-Resistant Res
6、in Mor-tarsC 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 The sulfur mortar shall be stored in unopened containersand in a clean, dry place to prevent contaminati
7、on of theproduct. The mortar is not known to deteriorate in storage.5. Safety Precautions5.1 Sulfur mortar must be heated and molten in order to beused.5.2 Molten sulfur mortar fumes and vapors are irritating tothe eyes and mucuous membranes.Adequate ventilation shouldbe provided wherever sulfur mor
8、tars are used.5.3 If overheated, sulfur mortar ignites and burns with alow, blue flame that generates sulfur dioxide. If this shouldhappen, heating must be stopped and the vessel covered with atight-fitting lid to smother the flames.5.3.1 When using sulfur mortar in a confined area, each pailof molt
9、en material must be checked before entering the area toensure that the mortar is not burning.5.3.2 The areas where the melting and pouring are carriedout must be checked for flammable or explosive gases, and aflame permit issued, if required, before melting vessel fires arelit, or the molten sulfur
10、mortar is carried into the area.5.3.3 Fire extinguishing equipment must be available inorder to prevent flame spread.5.3.4 Water should not be used to extinguish ignited sulfur.5.4 All workmen must be equipped with suitable eyeprotection and gloves to protect them from spills and splashesof the molt
11、en mortar.5.4.1 It is recommended that workmen wear flame-retardantclothing. If combustible clothing is worn, care should be takento ensure that it does not contact the flame used for melting thesulfur mortar.5.4.2 All surfaces which molten sulfur mortar will contactmust be dry to prevent splatterin
12、g.6. Equipment6.1 Vessel, made of cast iron, steel, or aluminum, formelting the sulfur mortar. Suitable melting pots may beavailable from the sulfur mortar manufacturer.6.2 Long-Handled Steel Ladle, for dipping and stirring.6.3 Metal Pails, for transporting and pouring mortar.NOTE 1All equipment mus
13、t be clean and dry.7. Melting7.1 Sulfur mortar must be dry at the time of use in order toprevent foaming.1This practice is under the jurisdiction of ASTM Committee C03 on Chemical-Resistant Nonmetallic Materials and is the direct responsibility of SubcommitteeC03.02 on Monolithics, Grouts and Polyme
14、r Concretes.Current edition approved June 1, 2008. Published July 2008. Originally approvedin 1956. Last previous edition approved in 2003 as C 386 93 (2003).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of A
15、STMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.2 The ideal temperature range for melting and handlingmolten sulfur mortar is from 265
16、 to 290F (130 to 145C).Within this range the mortar is a smooth, free-flowing liquidwith a mirror-bright surface appearance.7.2.1 If the mortar is maintained below 265F, some of theliquid will congeal over the top or around the sides of thevessel, or both.7.2.2 If the mortar is heated above 290F, th
17、e mortarthickens and loses its mirror-bright surface appearance.7.3 Fill the vessel not more than one-half full of sulfurmortar.7.3.1 Heat slowly until the mortar has melted and attainedthe appearance described in 7.2.7.3.2 If congealing occurs, increase the temperature gradu-ally until it disappear
18、s.7.3.3 If the mortar is overheated, allow the molten materialto cool while stirring frequently. The addition of unmeltedsulfur mortar will facilitate cooling.8. Laying Brick or Tile8.1 The brick or tile must be dry and preferably at 65 to85F (18 to 29C).NOTE 2For an installation that is to be made
19、under unusual environ-mental conditions, consult the sulfur mortar manufacturer for assistancebefore beginning the application.8.2 Joint ThicknessJoint thickness should be between14in. (6 mm) and516 in. (8 mm).8.2.1 Spacer chips,14 to516 in. (6 to 8 mm) thick, made ofsulfur mortar conforming to Spec
20、ification C 287, are available.8.2.2 Alternatively, wood buttons approximately14-in. (6-mm) thick by58-in. (16-mm) diameter, may be substituted forthe sulfur chips.8.2.3 Horizontal joints may be formed by resting each brickor tile on three spacers which are placed in a triangular pattern.8.2.4 Space
21、rs may also be used to maintain the thickness ofvertical joints.8.3 Walls with Bed and Joints of Sulfur MortarBrickshould be laid running bond (staggered joints). Use muslin orheavy kraft paper, saturated with sodium silicate solution(water glass), over the face of the brick or tile to retain themol
22、ten sulfur mortar until it congeals. (If muslin is used, it maythen be stripped, resaturated, and reused.)8.3.1 Form and pour only one course of brick or tile at atime.8.3.2 The pouring containers should be large enough, andsufficient workmen used, to keep an entire pour fluid.8.3.3 Fill the vertica
23、l joints to within 1 in. (25 mm) of thetop of the course. This will provide a key in the mortar for thesubsequent course.8.4 Walls with Bed of Sulfur Mortar and Joints of ResinMortarsBeginning at a distance between14 to516 in. (6 to 8mm) away from the vertical substrate, construct a wall withresin m
24、ortar by buttering one long and one short dimension ofthe brick.8.4.1 Lay only one course of brick at a time, and pour thebed (back) joint with sulfur mortar as described in 8.3 above.8.4.2 For additional information regarding the selection anduse of resin mortar, see Specification C 395 and Practic
25、eC 399.NOTE 3When dual cements are used for the walls, the entire floor isinstalled with bed and joints of resin mortars.8.5 Floors with Sulfur Bed JointThe floor shall be givena skim coat of sulfur mortar prior to installing brick or tile.8.5.1 The purpose of the skim coat if asphalt membrane isuse
26、d is to prevent the brick or tile from forcing spacer chipsinto the membrane.8.5.2 If elastomeric linings are used, the purpose of thesulfur mortar skim coat is to provide a true plane on top ofwhich the brick or tile will be subsequently installed.8.5.3 Brick or tile are laid on three spacer chips
27、to form thehorizontal bed joint with spacing between the brick or tilemaintained at14 to516 in. (6 to 8 mm).8.5.4 Pour molten sulfur mortar between brick or tile and fillthe vertical joints to12 in. (13 mm) from the top.8.5.5 After the sulfur mortar has solidified but is still warm,fill the balance
28、of the joint by flooding the floor and squeegee-ing the molten mortar over the surface of the brick or tile.Suitable squeegees are box board, fiber board, etc.9. Cleaning Mortar from Brick or Tile9.1 Various compounds and application methods are avail-able from mortar manufacturers for masking the b
29、rick or tile tokeep sulfur mortar from adhering to them.10. Curing10.1 Sulfur mortar congeals in a few minutes and has its fullchemical resistance and about 65 % of its ultimate strength in30 min at a temperature of 73 6 4F (23 6 2C). Sulfur mortarshould be allowed to set for 2 h after congealing be
30、fore placingin service.11. Chemical Resistance11.1 The chemical resistance of sulfur mortars may bedetermined by Test Method C 267.11.2 A general guide to chemical resistance of sulfur mor-tars may be found in Table 1 of Specification C 287.12. Service Temperature12.1 Sulfur mortars should not be us
31、ed in installations thatwill be subjected to temperatures above 190F (88C).13. Keywords13.1 brick; chemical-resistant; sulfur mortar; tileC 386 93 (2008)2ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard.
32、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 committee and must be reviewed ev
33、ery 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 meeting of theresponsible tech
34、nical 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 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 386 93 (2008)3
