ASTM_C_51_-_18.pdf

Designation:C5118Standard Terminology Relating toLime and Limestone(as used by the Industry)1This standard is issued under the fixed designation C51;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()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.Scope*1.1 This terminology refers to the terms relating to lime andlimestone products as used by the industry.1.2 Where appropriate,the various terms defined belowshould be prefixed with one or other of the adjectives“high-calcium,”“magnesian,”or“dolomitic.”(Examples:dolomiticquicklime;high-calcium hydraulic hydrated lime;magnesianor dolomitic limestone.)1.3 The composition of a limestone should be given in termsof a percentage of the carbonates present.In limestone ofinterest to the lime industry,it is usually assumed that thematerial consists almost entirely of carbonates.Where thisassumption is not valid,the percentage of noncarbonate mate-rial should be determined,and the composition expressed interms of the carbonate material present.1.4 For specific application of lime or a limestone product,see the appropriate ASTM specification.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2C207 Specification for Hydrated Lime for Masonry Pur-posesC270 Specification for Mortar for Unit MasonryC602 Specification for Agricultural Liming MaterialsC1707 Specification for Pozzolanic Hydraulic Lime forStructural Purposes3.Terminologyagricultural limeeither ground quicklime or hydrated limewhose calcium and magnesium content is capable of neu-tralizing soil acidity.agricultural limestoneground or pulverized limestonewhose calcium and magnesium content is capable of neu-tralizing soil acidity.DISCUSSIONAgricultural lime is a very powerful neutralizing agent.Agricultural limestone,often referred to as“aglime”is the predominatematerial for soil pH adjustment.See Specification C602.air-slaked limethe product containing various proportionsof the oxides,hydroxides,and carbonates of calcium andmagnesium which results from the exposure of quicklime tothe air in sufficient quantity to show physical signs ofhydration(difficult to determine visually in pulverizedquicklime).alkaline earth solutions(AES),nan aqueous solution of theoxide or hydroxide of an element of group IIa in the periodictable,such as calcium or magnesium,which can be stronglyalkaline.available lime indexthose constituents of a lime which enterinto a desired reaction under the conditions of a specificmethod or process.building or construction limea lime whose chemical andphysical characteristics and method of processing make itsuitable for the ordinary or special construction uses of theproduct.by-product lime,na variety of Calcium and/or Calcium/Magnesium compounds that are usable for specific applica-tions but generally do not meet one or more specificationsrequired of primary lime products.DISCUSSIONExamples include lime kiln dust and lime hydratorrejects.It is advised that the specific compositions,physical properties,performance characteristics,and anticipated variabilities of such mate-rials be evaluated for the service intended.calcareousoriginating from predominately calcium carbon-ate or one of its derivative forms.calciathe chemical compound calcium oxide(CaO).1This terminology is under the jurisdiction of ASTM Committee C07 on Limeand Limestone and is the direct responsibility of Subcommittee C07.08 on Editorialand TerminologyCurrent edition approved Dec.1,2018.Published December 2018.Originallyapproved in 1922.Last previous edition approved in 2011 as C51 11.DOI:10.1520/C0051-18.2For 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 onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 calcined pozzolansmaterials that are produced by calcina-tion of natural siliceous or alumino-siliceous earths,suchcalcination being for the pu