1、Designation: C 287 98 (Reapproved 2008)e1Standard 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 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.e1NOTEA warning note was editorially corrected in July 2008.1. Scope1.1 This specification covers the requirements for chemical-resistant sulf
3、ur mortar, which must be heated and molten to beused, for bonding 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 standard. The values given in parentheses are mathematicalconversions to SI units that
4、are provided for information onlyand are not considered 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 appl
5、ica-bility of regulatory limitations prior to use. See Section 7 forspecific safety hazard.2. Referenced Documents2.1 ASTM Standards:2C 267 Test Methods for Chemical Resistance of Mortars,Grouts, and Monolithic Surfacings and Polymer ConcretesC 307 Test Method for Tensile Strength of Chemical-Resist
6、ant Mortar, Grouts, and Monolithic SurfacingsC 321 Test Method for Bond Strength of Chemical-Resistant MortarsC 386 Practice for Use of Chemical-Resistant Sulfur MortarC 413 Test Method for Absorption of Chemical-ResistantMortars, Grouts, Monolithic Surfacings, and Polymer Con-cretesC 579 Test Metho
7、ds for Compressive Strength of Chemical-Resistant Mortars, Grouts, Monolithic Surfacings, andPolymer ConcretesC 580 Test Method for Flexural Strength and Modulus ofElasticity of Chemical-Resistant Mortars, Grouts, Mono-lithic Surfacings, and Polymer ConcretesC 904 Terminology Relating to Chemical-Re
8、sistant Non-metallic Materials3. Terminology3.1 DefinitionsFor definitions of terms used in this speci-fication, see Terminology C 904.4. Chemical Composition4.1 The sulfur mortar shall conform to the following re-quirements for chemical composition:Sulfur,% 55to70Inert filler, % 45 to 30Fillers are
9、 usually carbon or silica and can affect thechemical resistance of sulfur mortars.5. Chemical Resistance5.1 A general guide to chemical 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 Pr
10、operties6.1 The sulfur mortar shall conform to the following physi-cal requirements:Tendency of filler to settle, maximum variation 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 afte
11、r thermal shock test, min, psi (MPa) 150 (1.0)Bond strength, min, psi (MPa) 150 (1.0)Absorption, max, weight % 1.07. Test Methods7.1 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
12、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) for at1This specification is under the jurisdiction of ASTM Committee C03 onChemical-Resistant Nonmetallic Materials and is the direct responsibility ofSubcommittee C03.0
13、2 on Monolithics, Grouts and Polymer Concretes.Current edition approved June 1, 2008. Published July 2008. Originally approvedin 1952. Last previous edition approved in 2003 as C 287 98 (2003).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at se
14、rviceastm.org. For Annual Book of ASTMStandards 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.least 15 min, while stirring with a laboratory-type m
15、ixer. 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 of 73 6 4F (236 2C).7.1.3 Filler Content:7.1.3.1 Determin
16、e the filler content of the sulfur mortar byextraction with carbon disulfide, (CS2see warning below)using Soxhlet-type equipment. Dry and weigh the filterthimble. Place 10 to 15 g of the sample in the thimble and placethimble in the extraction equipment. Pour 40 to 50 mL ofcarbon disulfide into the
17、flask. Cautiously heat the flask in awater bath just enough to slowly reflux the carbon disulfidewhile circulating cold water through the condenser. Continuethe extraction until the carbon disulfide is clear in the siphontube.(WarningCarbon disulfide is highly toxic and highlyflammable with a flash
18、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 212F (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-
19、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. Carefully remove test tube from hot environmentand hold under tap water until mortar is completely solidified.Break and remove glass from sulfur specimen. A
20、 shrinkagecone will have formed at top of sample on cooling. Cut ormachine off this shrinkage cone portion. Cut remaining mortarspecimen into three sections of approximately equal length.Grind top and bottom thirds separately using a mortar andpestle. Perform extraction test on each sample using pro
21、cedureoutlined in 7.1.3 and calculate filler content of each. Calculatetendency of filler to settle by dividing filler content of bottomportion by filler 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 58
22、0.7.1.8 Thermal Shock TestCast at least five tensile briquetsas described in Test Method C 307 and store them for 48 h atambient temperature. Provide 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 coldb
23、ath, 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 briquets 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 col
24、d bathfor 5 min. After five such cycles, remove the five specimensand determine their tensile strength immediately in accordancewith Test Method C 307.7.1.9 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 ofboil
25、ing.8. Packaging and Package Marking8.1 The sulfur mortar shall be packaged in suitable contain-ers and marked to denote the type filler. Complete instructionsfor melting and pouring shall be included.8.2 Packages may be marked at the discretion of thesupplier and on his responsibility, indicating t
26、hat the productsatisfies this specification.9. Keywords9.1 brick; chemical resistant; hot melt; sulfur mortar; tilegroutASTM 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 express
27、ly 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 every five years andif not revised,
28、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 technical committee, which you may att
29、end. 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.
30、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).TABLE 1 General Guide to Chemical Resistance of SulfurMortars
31、NOTEThis table is intended for use as a general guide to the resistanceof sulfur mortars in immersed service at ambient temperature, and mayusually be upgraded for spillage only. Specific recommendations shouldbe obtained from the manufacturer of the sulfur mortar.SubstanceChemicalResistanceAAcids,
32、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 (2008)e12
