1、Designation: C386 93 (Reapproved 2012)Standard Practice forUse of Chemical-Resistant Sulfur Mortar1This standard is issued under the fixed designation C386; 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 detailed information on thehandling, installation, and proper use of chemical-resistantsulfur mortar such as
3、those covered in Specification C287.1.2 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
4、 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. Referenced Doc
5、uments2.1 ASTM Standards:2C267 Test Methods for Chemical Resistance of Mortars,Grouts, and Monolithic Surfacings and Polymer ConcretesC287 Specification for Chemical-Resistant Sulfur MortarC395 Specification for Chemical-Resistant Resin MortarsC399 Practice for Use of Chemical-Resistant Resin Mortar
6、sC904 Terminology Relating to Chemical-Resistant Nonme-tallic Materials3. Terminology3.1 DefinitionsFor definitions of terms used in thispractice, see Terminology C904.4. Storage4.1 The sulfur mortar shall be stored in unopened containersand in a clean, dry place to prevent contamination of theprodu
7、ct. 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 mortars are used.
8、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 molten material mu
9、st 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 mortar is carr
10、ied 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 molten mortar.5.4.
11、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 splattering.6. Equipment
12、6.1 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 must be clean and
13、 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 Materialsand is the direct responsibility of SubcommitteeC03.02 on Monolithics, Grouts and Polymer Concretes.Cur
14、rent edition approved Aug. 1, 2012. Published September 2012. Originallyapproved in 1956. Last previous edition approved in 2008 as C386 93 (2008).DOI: 10.1520/C0386-93R12.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For An
15、nual 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 States17.2 The ideal temperature range for melting and handlingmolten sulfur morta
16、r is from 265 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 a
17、bove 290F, the 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
18、 it disappears.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 i
19、s to be made under unusual environ-mental conditions, consult the sulfur mortar manufacturer for assistancebefore beginning the application.8.2 Joint Thickness Joint 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 conf
20、orming to Specification C287, 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 patter
21、n.8.2.4 Spacers 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
22、retain themolten 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 Fil
23、l the vertical 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 wal
24、l withresin mortar 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 C395
25、 and Practice C399.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 Joint The 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 m
26、embrane isused 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
27、spacer chips 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
28、 the balance 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
29、masking the brick 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
30、congealing before placingin service.11. Chemical Resistance11.1 The chemical resistance of sulfur mortars may bedetermined by Test Method C267.11.2 A general guide to chemical resistance of sulfur mor-tars may be found in Table 1 of Specification C287.12. Service Temperature12.1 Sulfur mortars shoul
31、d not be used in installations thatwill be subjected to temperatures above 190F (88C).13. Keywords13.1 brick; chemical-resistant; sulfur mortar; tileC386 93 (2012)2ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this
32、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 committee and must be r
33、eviewed 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 meeting of therespon
34、sible 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 Box C700, West
35、 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/).C386 93 (2012)3
