ASTM_C_1195_-_03_2011.pdf

Designation:C119503(Reapproved 2011)Standard Test Method forAbsorption of Architectural Cast Stone1This standard is issued under the fixed designation C1195;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 sampling,preparation ofspecimens,and determination of the absorption of architecturalcast stone.1.2 This test method describes two procedures:(1)coldwater and(2)boiling water.The user of the test method shouldstipulate which is desired.If no stipulation is made,the coldwater procedure will be used.1.3 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.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.2.Referenced Documents2.1 ASTM Standards:2C642 Test Method for Density,Absorption,and Voids inHardened Concrete3.Terminology3.1 Definitions:3.1.1 cast stonean architectural precast concrete buildingunit intended to simulate natural cut stone.4.Significance and Use4.1 This test method is to be used in determining theabsorption of cast stone.Absorption is one measure of porosityof cast stone and,hence,its resistance to weathering andstructural stress.5.Sampling5.1 Select the sample to represent the cast stone underconsideration.The sample may be randomly selected by thepurchaser or his authorized representative from each 500 ft3(14 m3)of cast stone.Select a sample of adequate size topermit the preparation of three absorption test specimens.6.Test Specimens6.1 For absorption tests take three specimens from thesample.Cut specimens from the finished surface of the sampleto consist of one surface intended to be exposed to view andfive saw-cut surfaces,except that for faced cast stone,cut thespecimens through the faced surface to consist of approxi-mately equal parts of the facing material and the backupmaterial.6.2 Cut specimens from the sample with saws.The testspecimens shall be 2-in.(50.8-mm)or 50-mm cubes.Theallowable size tolerance of the cubes shall be 618in.(3.2 mm).7.Conditioning7.1 For this test,oven dry specimens at a temperature of 212to 230F(100 to 110C)until the loss in mass is not more than0.1%in 24 h of drying.Remove specimens from the oven andallow to cool in room temperature to a final temperature of 68to 77F(20 to 25C)before testing for absorption.8.Procedure8.1 Weigh the specimens immediately after conditioningand determine the mass to the nearest 0.1 g.8.2 Method A,Cold Water TestImmerse the specimenscompletely in filtered or distilled water at 73.4 6 3F(2361.7C)for 48 h.At the end of this period,remove them fromthe water bath one at a time,surface dry with a damp cloth,anddetermine the mass to the nearest 0.1 g.8.3 Method B,Boiling Water TestImmerse the specimenscompletely in cold filtered or distilled water for 48 h and thenimmerse in boiling water at 2126 9F(100 6 5C)for 5 h.Allow the specimens to cool to a final temperature of 68 to77F(20 to 25C),surface dry,and weigh to the nearest 0.1 g.9.Calculations9.1 Calculate the absorption of each specimen as follows:absorption,mass%5B 2 A!/A#3100(1)1This test method is under the jurisdiction of ASTM Committee C27 on PrecastConcrete Products and is the direct responsibility of Subcommittee C27.20 onArchitectural and Structural Products.Current edition approved May 1,2011.Published June 2011.Originallypublished in 1991.Last previous edition approved in 2003 as C1195 03.DOI:10.1520/C1195-03R11.2For 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 where:A=mass of the dried specimen,andB=mass of the specimen after immersion.9.2 The absorption is the average absorption of the threespecimens.10.Report10.1 Report the following information:10.1.1 Identification of the sample,10.1.2 Mixture proportions,10.1.3 Test method,10.1.4 Absorption value,10.1.5 Name of the project,10.1.6 Date of casting,and10.1.7 Age of sample when test begins.11.Precision and Bias11.1 PrecisionThe precision of this test is similar to TestMethod C642 for which data are not yet available.Theprecision of this test method will be stated when data becomeavailable.11.2 BiasSince there is no accepted reference materialsuitable for determining the