1、Designation: C 287 98 (Reapproved 2003)Standard Specification forChemical-Resistant Sulfur Mortar1This standard is issued under the fixed designation C 287; 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 (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the requirements for chemical-resistant sulfur mortar, which must be heated and molten to beused, for bon
3、ding chemical-resistant brick or tile. For the use ofthese materials, see Practice C 386.1.2 The values stated in inch-pound 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 thesafety concer
4、ns, 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. See Section 7 forspecific safety hazard.2. Referenced Documents2.1 ASTM Standards:2
5、C 267 Test Method for Chemical Resistance of Mortars,Grouts, and Monolithic Surfacings and Polymer ConcretesC 307 Test Method for Tensile Strength of Chemical-Resistant Mortars, Grouts, and Monolithic SurfacingsC 321 Test Method for Bond Strength of Chemical-Resistant MortarsC 386 Practice for Use o
6、f Chemical-Resistant Sulfur MortarC 413 Test Method for Absorption of Chemical-ResistantMortars, Grouts, and Monolithic Surfacings and PolymerConcretesC 579 Test Method for Compressive Strength of Chemical-Resistant Mortars, Grouts, Monolithic Surfacings andPolymer ConcretesC 580 Test Method for Fle
7、xural Strength and Modulus ofElasticity of Chemical-Resistant Mortars, Grouts, andMonolithic Surfacings and Polymer ConcretesC 904 Terminology Relating to Chemical-Resistant Non-metallic Materials3. Terminology3.1 DefinitionsFor definitions of terms used in this speci-fication, see Terminology C 904
8、.4. Chemical Composition4.1 The sulfur mortar shall conform to the following re-quirements for chemical composition:Sulfur, % 55 to 70Inert filler, % 45 to 30Fillers are usually carbon or silica and can affect thechemical resistance of sulfur mortars.5. Chemical Resistance5.1 A general guide to chem
9、ical resistance of sulfur mortarsmay be found in Table 1.5.2 The resistance of sulfur mortar to specific chemicalsshall be determined by Test Method C 267.6. Physical Properties6.1 The sulfur mortar shall conform to the following physi-cal requirements:Tendency of filler to settle, maximum variation
10、 from unity 0.6Tensile strength, min, psi (MPa) 400 (2.8)Compressive strength, min, psi (MPa) 4000 (28)Flexural strength, min, psi (MPa) 1000 (6.9)Strength retained after thermal shock test, min, psi (MPa) 150 (1.0)Bond strength, min, psi (MPa) 150 (1.0)Absorption, max, weight % 1.07. Test Methods7.
11、1 Sample the sulfur mortar and determine the propertiesenumerated in this specification in accordance with the follow-ing test methods:7.1.1 Sampling and Preparation of SampleUsing a mini-mum of 5 lb (2.3 kg), melt the sample in less than 1 h. Thenhold at a temperature of 265 to 290F (129 to 143C) f
12、or atleast 15 min, while stirring with a laboratory-type mixer. Thismixer shall be of such type and operate at a speed to lift theaggregate, but without beating air into the molten sample. Castall test specimens from this sample.7.1.2 Storage of Test SpecimensStore all test specimens ata temperature
13、 of 73 6 4F (236 2C).7.1.3 Filler Content:1This specification is under the jurisdiction of ASTM Committee C03 onChemical-Resistant Nonmetallic Materials and is the direct responsibility ofSubcommittee C03.02 on Mortar and Monolithics.Current edition approved Oct. 1, 2003. Published October 2003. Ori
14、ginallyapproved in 1952. Last previous edition approved in 1998 as C 287 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 standards Document Summary page onth
15、e ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.1.3.1 Determine the filler content of the sulfur mortar byextraction with carbon disulfide, (CS2see Note 1) usingSoxhlet-type equipment. Dry and weigh the filter thimbl
16、e.Place 10 to 15 g of the sample in the thimble and place thimblein the extraction equipment. Pour 40 to 50 mL of carbondisulfide into the flask. Cautiously heat the flask in a water bathjust enough to slowly reflux the carbon disulfide while circu-lating cold water through the condenser. Continue t
17、he extrac-tion until the carbon disulfide is clear in the siphon tube.NOTE 1Caution: Carbon disulfide is highly toxic and highly flam-mable with a flash point of -22F (-30C).7.1.3.2 Remove the filter. Dry carefully, first at a lowtemperature to prevent ignition of the carbon disulfide and thenat 212
18、F (100C), to constant weight. Final weight divided byoriginal weight times 100 equals percent filler content.7.1.4 Tendency of Filler to SettleFill a 1-in. (25-mm)diameter heat-resistant glass test tube to a depth of 8 in. (200mm) with molten sulfur mortar and maintain at 285F (141C)for 30 min. Care
19、fully remove test tube from hot environmentand hold under tap water until mortar is completely solidified.Break and remove glass from sulfur specimen. A shrinkagecone will have formed at top of sample on cooling. Cut ormachine off this shrinkage cone portion. Cut remaining mortarspecimen into three
20、sections of approximately equal length.Grind top and bottom thirds separately using a mortar andpestle. Perform extraction test on each sample using procedureoutlined in 7.1.3 and calculate filler content of each. Calculatetendency of filler to settle by dividing filler content of bottomportion by f
21、iller content of top portion.7.1.5 Tensile StrengthTest Method C 307.7.1.6 Compressive StrengthTest Method C 579.7.1.7 Flexural StrengthTest Method C 580.7.1.8 Thermal Shock TestCast at least five tensile briquetsas described in Test Method C 307 and store them for 48 h atambient temperature. Provid
22、e two 5-gal pails, each filledapproximately two-thirds full of water. Maintain the tempera-ture in one pail between 50 and 60F (10 and 15C) as the coldbath, and the other pail between 175 and 185F (80 and 85C)as the hot bath. Place five briquet specimens in a wire cageconstructed so as to hold the b
23、riquets spaced at least 1 in. (25.4mm) from each other. Suspend the specimens in the middle ofthe hot bath for 5 min and immediately transfer to the cold bathfor 5 min. After five such cycles, remove the five specimensand determine their tensile strength immediately in accordancewith Test Method C 3
24、07.7.1.9 Bond StrengthTest Method C 321.7.1.10 AbsorptionTest Method C 413, except that thetemperature in 6.2 shall be held at 190F (88C) instead ofboiling.8. Packaging and Package Marking8.1 The sulfur mortar shall be packaged in suitable contain-ers and marked to denote the type filler. Complete i
25、nstructionsfor melting and pouring shall be included.8.2 Packages may be marked at the discretion of thesupplier and on his responsibility, indicating that the productsatisfies this specification.9. Keywords9.1 brick; chemical resistant; hot melt; sulfur mortar; tilegroutASTM International takes no
26、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 riskof infringement of such rights, are entirely their own responsi
27、bility.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 this standard or for additional standardsand should be addressed to
28、 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 your views known to the ASTM Committee on Standards, at the addr
29、ess 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),
30、610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).TABLE 1 General Guide to Chemical Resistance of SulfurMortarsNOTEThis table is intended for use as a general guide to the resistanceof sulfur mortars in immersed service at ambient temperature, and mayusually
31、be upgraded for spillage only. Specific recommendations shouldbe obtained from the manufacturer of the sulfur mortar.SubstanceChemicalResistanceAAcids, mineralB(nonoxidizing) RAcids, mineral (oxidizing) RCAcids, organic LAlkalies, inorganic NBleaches NWet gases, oxidizing RWet gases, reducing RGases, nonoxidizing and nonreducing RDOrganic solvents LAR = generally recommended.L = limited use.N = not recommended.BSilica filler must be avoided for hydrofluoric acid service.CN for chromic acid, sulfuric acid above 85 % and nitric acid above 40 %.DN for ammonia gas.C 287 98 (2003)2
