1、Designation:C568/C568M15Standard 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 number in parenthe
2、ses 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 characteristics,physical require
3、ments,and sampling appropriate to the selec-tion of limestone for general building and structural purposes.Refer to Guides C1242 and C1528 for the appropriate selectionand use of limestone dimension stone.1.2 Dimension limestone shall include stone that is sawed,cut,split,or otherwise finished or sh
4、aped and shall specificallyexclude molded,cast,or otherwise artificially aggregated unitsof composed fragments,and also crushed and broken stone.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equi
5、valents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.2.Referenced Documents2.1 ASTM Standards:2C97/C97M Test Methods for Absorption and Bulk SpecificGravity of Dimension StoneC99/C99M Test Method for
6、 Modulus of Rupture of Dimen-sion StoneC119 Terminology Relating to Dimension StoneC170/C170M Test Method for Compressive Strength ofDimension StoneC241/C241M Test Method for Abrasion Resistance of StoneSubjected to Foot TrafficC1242 Guide for Selection,Design,and Installation ofDimension Stone Atta
7、chment SystemsC1353 Test Method for Abrasion Resistance of DimensionStone Subjected to Foot Traffic Using a Rotary PlatformAbraserC1528 Guide for Selection of Dimension Stone3.Terminology3.1 DefinitionsAll definitions are in accordance with Ter-minology C119.4.Classification4.1 Dimension limestone s
8、hall be classified into threecategories,generally descriptive of those limestones havingdensities in approximate ranges,as follows:4.1.1 I(Low-Density)Limestone having a density rangingfrom 110 through 135 lb/ft31760 through 2160 kg/m3.4.1.2 II(Medium-Density)Limestone having a densitygreater than 1
9、35 and not greater than 160 lb/ft32160 through2560 kg/m3.4.1.3 III(High-Density)Limestone having a densitygreater than 160 lb/ft32560 kg/m3.5.Physical Requirements5.1 Limestone supplied under this specification shall con-form to the physical requirements listed in Table 1.5.2 Limestone shall be soun
10、d,durable,and free of spalls,cracks,open seams,pits,or other defects that are likely toimpair its structural integrity in its intended use.5.3 The desired color and texture,with their permissiblenatural variations in material characteristics for all material tobe produced for the project,shall be es
11、tablished by controlsamples.Select representative samples by viewing a sufficientnumber of physical samples prior to production that show thecomplete range of variations in color and texture of thelimestone specified.6.Sampling6.1 Samples,if required,for testing to determine the char-acteristics and
12、 physical properties shall be representative of thelimestone to be used.7.Keywords7.1 calcium carbonate;limestone1This specification is under the jurisdiction of ASTM Committee C18 onDimension Stone and is the direct responsibility of Subcommittee C18.03 onMaterial Specifications.Current edition app
13、roved Dec.1,2015.Published January 2016.Originallyapproved in 1965.Last previous edition approved in 2010 as C568/C568M 10.DOI:10.1520/C0568_C0586M-15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandard
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