ASTM C580-2018 Standard Test Method for Flexural Strength and Modulus of Elasticity of Chemical-Resistant Mortars Grouts Monolithic Surfacings and Polymer Concr.pdf
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1、Designation: C580 02 (Reapproved 2012)C580 18Standard Test Method forFlexural Strength and Modulus of Elasticity of Chemical-Resistant Mortars, Grouts, Monolithic Surfacings, andPolymer Concretes1This standard is issued under the fixed designation C580; the number immediately following the designati
2、on indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agen
3、cies of the U.S. Department of Defense.1. Scope1.1 This test method covers the determination of flexural strength and modulus of elasticity in flexure of cured chemical-resistant materials in the form of molded rectangular beams. These materials include mortars, brick and tile grouts, structuralgrou
4、ts, machinery grouts, monolithic surfacings (60 mils or greater), and polymer concretes. These materials shall be based onresin, silicate, silica, or sulfur binders.1.2 Abar of rectangular cross section is tested in flexure as a simple beam in center point loading: the bar rests on two supportsand t
5、he load is applied by means of a loading nose midway between supports.1.3 Method A outlines the testing procedure generally used for systems containing aggregate less than 0.2 in. (5 mm) in size.Method B covers the testing procedure generally used for systems containing aggregate from 0.2 to 0.4 in.
6、 (10 mm) in size. MethodC is used for systems containing aggregate larger than 0.4 in.1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standa
7、rd.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine theapplicability of regulatory limitation
8、s prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical
9、 Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C904 Terminology Relating to Chemical-Resistant Nonmetallic MaterialsC1312 Practice for Making and Conditioning Chemical-Resistant Sulfur Polymer Cement Concrete Test Specimens in theLaboratoryE4 Practices for Force Verifi
10、cation of Testing MachinesE177 Practice for Use of the Terms Precision and Bias in ASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method3. Terminology3.1 DefinitionsFor definitions of terms used in this test method, see Terminology C904.4.
11、 Significance and Use4.1 This test method is generally applicable to rigid and semirigid materials. Although flexural strength cannot be determinedfor those materials that do not break, tangent modulus of elasticity can be determined.1 This test method is under the jurisdiction of ASTM Committee D01
12、 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility ofSubcommittee D01.46 on Industrial Protective Coatings.Current edition approved Aug. 1, 2012July 1, 2018. Published September 2012November 2018. Originally approved in 1965. Last previous edition approved i
13、n 20082012as C580 02 (2008).(2012). DOI: 10.1520/C0580-02R12.10.1520/C0580-18.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on
14、the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users
15、consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.2 The results obtained by thi
16、s test method should serve as a guide in, but not as the sole basis for, selection of achemical-resistant material for a particular application. No attempt has been made to incorporate into this test method all thevarious factors that may affect the performance of a material when subjected to actual
17、 service.4.3 In addition to the tangent modulus of elasticity, a secant modulus is calculated at the point on the stress-strain(load-deflection) graph where the strain is 50 % of the maximum strain.5. Apparatus5.1 Weighing Equipment, shall be capable of weighing materials or specimens to 60.3 % accu
18、racy.5.2 Equipment for Mixing Materials, shall consist of a container of suitable size, preferably corrosion-resistant, a spatula,trowel, or mechanical mixer, and a 38 in. diameter rod with a rounded end, for use in casting specimens.5.3 Specimen Molds:5.3.1 Method AMolds to permit the casting of ba
19、rs 1 6 116 in. (25 6 1 mm) square by 10 in. (250 mm) minimum length.5.3.1.1 For sulfur mortars, the following additional equipment is required:(1) Cover Plate, of a size sufficient to enclose the open side of the bar mold. The base plate from another similar bar mold hasbeen found to be acceptable.(
20、2) C-Clamp, large enough to fasten the cover plate securely over the bar mold.(3) Melting Chamber, of sufficient volume and heat capacity to melt the sulfur mortar sample and maintain the temperature ofthe melt between 260 and 290F (127 and 143C).(4) Laboratory Mixer, of such a type and speed to be
21、capable of lifting the aggregate without beating air into the melt.(5) Ladle, of sufficient capacity to completely pour one bar.(6) Masking Tape, 1 in. (25 mm), or an equivalent.5.3.2 Method BMolds to permit the casting of bars 2 6 18 in. (50 6 3 mm) square by 12 in. (300 mm) minimum length.5.3.3 Me
22、thod CMolds to permit casting of rectangular beams shall have a minimum cross-sectional dimension of 2 in. andat least three times the nominal maximum size of the coarse aggregate in the polymer concrete (Note 1). The bar length shall beat least three times the beam depth plus 2 in.NOTE 1The nominal
23、 maximum size of coarse aggregate is that size next larger than the largest sieve on which at least 15 % of the coarse aggregateby weight is retained.5.4 Testing MachineThe testing machine shall be of any type sufficient to provide the required load and the rate of deflectionprescribed. It shall hav
24、e been verified to have an accuracy of 1.0 % or better within twelve months of the time of use in accordancewith Practices E4. It shall be equipped with an appropriate device to record deflection and produce a graph of load versusdeflection.5.5 Loading Nose and SupportsThe loading nose and supports
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