ASTM_C_1757_-_13.pdf

Designation:C175713Standard Test Method forDetermination of One-Point,Bulk Water Sorption of DriedConcrete1This standard is issued under the fixed designation C1757;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 test method covers the determination of wateringress into the bulk(mass)of a hardened,dried concretespecimen after being submerged for 30 minutes.1.2 The text of this test method references notes that provideexplanatory information.These notes and footnotes(excludingthose in tables and figures)shall not be considered as require-ments of this standard1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 This test method 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:2C31/C31M Practice for Making and Curing Concrete TestSpecimens in the FieldC42/C42M Test Method for Obtaining and Testing DrilledCores and Sawed Beams of ConcreteC125 Terminology Relating to Concrete and Concrete Ag-gregatesC192/C192M Practice for Making and Curing Concrete TestSpecimens in the LaboratoryC511 Specification for Mixing Rooms,Moist Cabinets,Moist Rooms,and Water Storage Tanks Used in theTesting of Hydraulic Cements and ConcretesC1005 Specification for Reference Masses and Devices forDetermining Mass and Volume for Use in the PhysicalTesting of Hydraulic CementsC1585 Test Method for Measurement of Rate of Absorptionof Water by Hydraulic-Cement Concretes3.Terminology3.1 Definitions:3.1.1 Refer to Terminology C125 for definitions of termsused in this test method.3.2 Definitions:3.2.1 sorption,nthe change in mass divided by the prod-uct of the surface area of the test specimen and the density ofwater,expressed in millimetres.4.Summary of Test Method4.1 A cylindrical concrete specimen is dried at 50C toconstant mass,and then placed in a sealed container for oneday.After immersion in water for 30 minutes,the specimensgain in mass is measured and the depth to which water isabsorbed in millimetres is calculated.5.Significance and Use5.1 The durability of concrete largely depends on the easewith which fluids,both liquids and gases can enter into andmove through,the concrete.3Adsorption and absorption of aliquid into empty or partially empty pores occur by capillaryattraction.4The continuity of the pores and their size,as well asthe volume of the voids,are factors that affect the sorptivity.45.2 This test method is intended to compare the relativeperformance of concrete mixtures exposed to wetting anddrying.It is not intended to compare the performance ofconcrete mixtures that will be submerged continuously.5.3 This test method tests a concrete that is essentially dry,as contrasted to the condition of the concrete in Test MethodC1585,in which much of the capillary water is retained.5.4 This test method determines the water absorbed intodried concrete in the first 30 minutes as an indicator of the1This test method is under the jurisdiction of ASTM Committee C09 onConcrete and Concrete Aggregates and is the direct responsibility of SubcommitteeC09.66 on Concretes Resistance to Fluid Penetration.Current edition approved Aug.1,2013.Published September 2013.DOI:10.1520/C1757-132For 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.3Properties of Concrete,A.M.Neville,Fourth Edition,Pearson EducationLimited,Essex.England,p 483.4Construction Materials:Their Nature and Behavior,Edited by J.M.Illstonand P.L.J.Domone,Third Edition 2001,Spoon Press,29 W 35th St.,New York,New York 1000,pp192-194.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 susceptibility of the concrete to water intrusion.This testmethod subjects all of the surfaces of the specimen to waterthereby giving a value for bulk sorption of the specimen whichgives an indication of the potential durability of the concretemixture.5.5 This test is applicable to hydraulic cement concretemixtures with or without supplementary cementitious materialsor admixtures.5.6 This test method permits for the use of both cores andcast specimens.The results for cast specimens are not equiva-lent to those obtained from cores.Results can differ because,compared with cores,cast specimens have smoother surfacetexture,no damage from coring,and a greater amount of pasteexposed at the surfac