1、Designation: C568/C568M 10C568/C568M 15Standard Specification forLimestone Dimension Stone1This standard is issued under the fixed designation C568/C568M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A
2、 number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope1.1 This specification covers the material character
3、istics, physical requirements, and sampling appropriate to the selection oflimestone for general building and structural purposes. Refer to Guides C1242 and C1528 for the appropriate selection and useof limestone dimension stone.1.2 Dimension limestone shall include stone that is sawed, cut, split,
4、or otherwise finished or shaped and shall specificallyexclude molded, cast, or otherwise artificially aggregated units of composed fragments, and also crushed and broken stone.1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in
5、 eachsystem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the standard.2. Referenced Documents2.1 ASTM Standards:2C97/C97M Test Methods for Absorption and Bulk Specific Gravity of
6、 Dimension StoneC99/C99M Test Method for Modulus of Rupture of Dimension StoneC119 Terminology Relating to Dimension StoneC170/C170M Test Method for Compressive Strength of Dimension StoneC241/C241M Test Method for Abrasion Resistance of Stone Subjected to Foot TrafficC1242 Guide for Selection, Desi
7、gn, and Installation of Dimension Stone Attachment SystemsC1353 Test Method for Abrasion Resistance of Dimension Stone Subjected to Foot Traffic Using a Rotary Platform AbraserC1528 Guide for Selection of Dimension Stone3. Terminology3.1 DefinitionsAll definitions are in accordance with Terminology
8、C119.4. Classification4.1 Dimension limestone shall be classified into three categories, generally descriptive of those limestones having densities inapproximate ranges, as follows:4.1.1 I (Low-Density)Limestone having a density ranging from 110 through 135 lb/ft3 1760 through 2160 kg/m3.4.1.2 II (M
9、edium-Density)Limestone having a density greater than 135 and not greater than 160 lb/ft3 2160 through 2560kg/m3.4.1.3 III (High-Density)Limestone having a density greater than 160 lb/ft3 2560 kg/m3.5. Physical Requirements5.1 Limestone supplied under this specification shall conform to the physical
10、 requirements listed in Table 1.5.2 Limestone shall be sound, durable, and free of spalls, cracks, open seams, pits, or other defects that are likely to impair itsstructural integrity in its intended use.1 This specification is under the jurisdiction of ASTM Committee C18 on Dimension Stone and is t
11、he direct responsibility of Subcommittee C18.03 on MaterialSpecifications.Current edition approved Sept. 1, 2010Dec. 1, 2015. Published October 2010January 2016. Originally approved in 1965 .1965. Last previous edition approved in 20082010as C568 08a.C568/C568M 10. DOI: 10.1520/C0568_C0586M-10.10.15
12、20/C0568_C0586M-15.2 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 the ASTM website.This document is not an ASTM standard and
13、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 consult prior editions as appropriate. In all cases only th
14、e 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 States15.3 The desired color and texture, with their permissible natural variations in material c
15、haracteristics for all material to beproduced for the project, shall be established by control samples. Select representative samples by viewing a sufficient number ofphysical samples prior to production that show the complete range of variations in color and texture of the limestone specified.6. Sa
16、mpling6.1 Samples, if required, for testing to determine the characteristics and physical properties shall be representative of thelimestone to be used.TABLE 1 Physical RequirementsNOTE 1The values in Table 1 were established using samples prepared according to the individual test methods. Finishes,
17、 other than those specifiedin the individual test methods, may result in a deviation from established values.Physical Property Test Requirements Classification Test Meth-od(s)Absorption by weight, max, % 127.53IIIIIIlow-densitymedium-densityhigh-densityC97/C97MDensity, min, lb/ft3 kg/m3 110 1760135
18、2160160 2560IIIIIIlow-densitymedium-densityhigh-densityC97/C97MCompressive strength, min, psi MPa 1800 124000 288000 55IIIIIIlow-densitymedium-densityhigh-densityC170/C170MModulus of rupture min, psi MPa 400 2.8500 3.41000 6.9IIIIIIlow-densitymedium-densityhigh-densityC99/C99MAbrasion resistance, mi
19、n, hardnessA,B,C 101010IIIIIIlow-densitymedium-densityhigh-densityC241/C241M/C1353TABLE 1 Physical RequirementsNOTE 1The values in Table 1 were established using samples prepared according to the individual test methods. Finishes, other than those specifiedin the individual test methods, may result
20、in a deviation from established values.Physical Property Test Requirements Classification Test Meth-od(s)Absorption by weight, max, % 127.53IIIIIIlow-densitymedium-densityhigh-densityC97/C97MDensity, min, lb/ft3 kg/m3 110 1760135 2160160 2560IIIIIIlow-densitymedium-densityhigh-densityC97/C97MCompres
21、sive strength, min, psi MPa 1800 124000 288000 55IIIIIIlow-densitymedium-densityhigh-densityC170/C170MModulus of rupture min, psi MPa 400 2.8500 3.41000 6.9IIIIIIlow-densitymedium-densityhigh-densityC99/C99MAbrasion resistance, min, hardnessA,B 101010IIIIIIlow-densitymedium-densityhigh-densityC241/C
22、241M/C1353A Pertains only to stone subject to foot traffic.B The supplier of the No. 60 Alundum abrasive, Norton, has indicated that the formula for Norton treatment 138S has been changed. The new abrasive is currrently moreaggressive, resulting in lower abrasive hardness values (Ha) than when the s
23、tandard was initially established. As such, care should be taken when interpreting Ha valuesfrom tests using the new abrasive, particularly with regard to currentASTM stone standard specification requirements for abrasion resistance, which were developed whenthe original abrasive was still in use. C
24、ommittee C18 is actively studying alternatives to address this issue.B Abrasion Resistance Test Method C1353 will eventually replace Test Method C241/C241M and it is not necessary to perform both tests. Availability of the properequipment and materials by the testing laboratory may determine which t
25、est is performed.C568/C568M 1527. Keywords7.1 calcium carbonate; limestoneASTM 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 expressly advised that determination of the validity
26、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, either reapproved or withdrawn.Your comments a
27、re 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 attend. If you feel that your comments have not re
28、ceived 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)
29、 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 Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 153
