ASTM_C_1489_-_15.pdf

Designation:C148915Standard Specification forLime Putty for Structural Purposes1This standard is issued under the fixed designation C1489;the number immediately following the designation 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.1.Scope1.1 This specification covers lime putty products made fromhydrated lime or quicklime products.Lime putty is suitable foruse in masonry,plaster and stucco applications.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.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 applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C5 Specification for Quicklime for Structural PurposesC25 Test Methods for Chemical Analysis of Limestone,Quicklime,and Hydrated LimeC50 Practice for Sampling,Sample Preparation,Packaging,and Marking of Lime and Limestone ProductsC51 Terminology Relating to Lime and Limestone(as usedby the Industry)C110 Test Methods for Physical Testing of Quicklime,Hydrated Lime,and LimestoneC185 Test Method for Air Content of Hydraulic CementMortarC206 Specification for Finishing Hydrated LimeC207 Specification for Hydrated Lime for Masonry Pur-posesC1271 Test Method for X-ray Spectrometric Analysis ofLime and LimestoneC1301 Test Method for Major and Trace Elements in Lime-stone and Lime by Inductively Coupled Plasma-AtomicEmission Spectroscopy(ICP)and Atomic Absorption(AA)3.Terminology3.1 Definitions:3.1.1 lime puttythe product obtained by either slakingquicklime with water according to the direction of the manu-facturer or by mixing hydrated lime and water to the desiredconsistency.3.1.2 Unless otherwise specified,for definitions of termsused in this standard,refer to Terminology C51.4.Chemical Composition4.1 The hydrated lime or quicklime products used to makelime putty shall conform to the following chemical composi-tion requirements:Calcium and magnesium oxides(LOI-free basis),min%92Carbon dioxide(presoaked basis)If sample is taken at place of manufacture,max%5If sample is taken at other place,max%74.2 Chemical composition of putty product of unknowncomposition must be determined on a sample dried in a CO2free atmosphere.NOTE1An apparatus to produce a dry,CO2free air stream isdescribed in the section on Free Moisture in Hydrated Lime of TestMethods C25.Or use an inert atmosphere such as nitrogen.5.Plasticity5.1 Lime putty shall have a plasticity of not less than 200Emley units when tested by the Emley method in the section onPlasticity of Lime Putty in Test Methods C110.Vicat consis-tency of the putty should be adjusted to a penetration of 20 65 mm prior to running the Emley test.If penetration results areabove 25 mm,the consistency of the putty can be increased byallowing the putty to settle and decanting off the excess wateror by the use of a suction pad such as the one used for the waterretention test in Test Methods C110.If the penetration is below15 mm,water should be added to the lime putty to increase thepenetration.When water is added to the putty,the putty shouldbe mixed for a minimum of 15 s prior to testing the penetration.6.Residue6.1 Residue of lime putty shall not be more than 0.5%on a600 m(No.30)sieve on a total putty weight basis.The1This specification is under the jurisdiction of ASTM Committee C07 on Limeand Limestone and is the direct responsibility of Subcommittee C07.02 onSpecifications and Guidelines.Current edition approved June 1,2015.Published June 2015.Originallyapproved in 2001.Last previous edition approved in 2008 as C1489 01(2008)1.DOI:10.1520/C1489-15.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 residue of lime putty should be determined in accordance withthe section on Residue and Sieve Analysis of Test MethodsC110,using an amount of lime putty equivalent to approxi-mately 100 g of solids.7.Soaking Period7.1 Lime putty made from quicklime or hydrated lime mustbe soaked for a period of time prior to use of the product.Theactual time required to ensure complete hydration of the limeputty is dependent on the reactivity of the unhydrated oxidescontained in the type of lime product used to make the putty.7.1.1 Lime putty made from quicklime must be soaked fora minimum of two weeks prior to use in construction applica-tions.7.1.2 Lime putty made with Type N hydrated