ASTM_C_1218_-_C_1218M_-_17.pdf

Designation:C1218/C1218M17Standard Test Method forWater-Soluble Chloride in Mortar and Concrete1This standard is issued under the fixed designation C1218/C1218M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method provides procedures for the samplingand analysis of hydraulic-cement mortar or concrete forchloride that is water soluble under the conditions of test.1.2 The text of this standard references notes and footnotesthat provide explanatory information.These notes and foot-notes shall not be considered as requirements of this standard.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as a standard.Within the text,theinch-pound units are shown in brackets.The values stated ineach system are not exact equivalents;therefore,each systemshall be used independently of the other.1.4 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.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:2C42/C42M Test Method for Obtaining and Testing DrilledCores and Sawed Beams of ConcreteC114 Test Methods for Chemical Analysis of HydraulicCementC670 Practice for Preparing Precision and Bias Statementsfor Test Methods for Construction MaterialsC823 Practice for Examination and Sampling of HardenedConcrete in ConstructionsC1084 Test Method for Portland-Cement Content of Hard-ened Hydraulic-Cement ConcreteD1193 Specification for Reagent WaterE11 Specification for Woven Wire Test Sieve Cloth and TestSievesE832 Specification for Laboratory Filter Papers3.Significance and Use3.1 Water-soluble chloride,if present in sufficient amount,iscapable of initiating or accelerating the corrosion of somemetallic materials embedded in or contacting cementitiousmixtures such as mortar and concrete.Chloride content,alongwith other factors,can be indicators for the possibility ofcorrosion of embedded metallic materials.This test method isused to determine the water-soluble chloride content in cemen-titious mixtures,either in new construction or existing struc-tures.NOTE1Water-soluble chloride content can vary with time.Forexample,water-soluble chloride content could increase due to additionalchloride ingress.Alternatively,water-soluble chloride content could de-crease due to chloride-binding or leaching.3.1.1 Test conditions are capable of affecting water-solublechloride determinations.Take caution when comparing resultsfrom this test method with those from other test methods.3.2 Sulfides are known to interfere with the determination ofchloride content.Blast-furnace slag aggregates and cementscontain sulfide sulfur in concentrations that are capable of suchinterference and produce erroneously high test results.Treat-ment with hydrogen peroxide,as discussed in Test MethodsC114,is used to eliminate such interference.3.3 There are aggregates that contain chloride that is notavailable for corrosion.Such chloride will be detected by useof this test method.34.Apparatus4.1 Sampling Equipment:1This test method is under the jurisdiction of ASTM Committee C09 onConcrete and Concrete Aggregatesand is the direct responsibility of SubcommitteeC09.69 on Miscellaneous Tests.Current edition approved May 1,2017.Published July 2017.Originally approvedin 1992.Last previous edition approved in 2015 as C1218/C1218M 15.DOI:10.1520/C1218_C1218M-17.2For 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.3For more information see“The Determination of the Chloride Content ofConcrete,”by Brian B.Hope,John A.Page and John S.Poland,Cement andConcrete Research,Volume 15,Number 5,Pergamon Press,New York,September1985,pp.863870.*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 B