1、Designation:C140315Standard Test Method forRate of Water Absorption of Masonry Mortars1This standard is issued under the fixed designation C1403;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 pa
2、rentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method covers a standardized laboratory pro-cedure for determining the relative water absorption by capil-lary uptake(wicking)characteristic
3、s of masonry mortars.Thistest method is not applicable for determining the effectivenessof water repellent coatings.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.2.1 Inch-pound units are given in parentheses for tempera-t
4、ure specification and are for information only.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 regulat
5、ory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C109/C109M Test Method for Compressive Strength ofHydraulic Cement Mortars(Using 2-in.or 50-mm CubeSpecimens)C270 Specification for Mortar for Unit MasonryC305 Practice for Mechanical Mixing of Hydraulic CementPastes and Mortars
6、of Plastic ConsistencyC511 Specification for Mixing Rooms,Moist Cabinets,Moist Rooms,and Water Storage Tanks Used in theTesting of Hydraulic Cements and ConcretesC778 Specification for SandC1180 Terminology of Mortar and Grout for Unit MasonryC1384 Specification for Admixtures for Masonry MortarsC14
7、37 Test Method for Flow of Hydraulic Cement Mortar3.Terminology3.1 DefinitionsFor definitions of terms used in this testmethod,refer to Terminology C1180.4.Significance and Use4.1 This test method provides a laboratory procedure fordetermining the relative water absorption properties over timeof mor
8、tars used for masonry construction.Because the speci-mens are made under laboratory conditions and do not take intoaccount the effect of the masonry substrate or field mixingprocedures,this method is not intended for field use.Datagenerated from this test method may be useful for determiningthe rela
9、tive effectiveness of water repellent admixtures or theeffect of other admixtures or mortar components on the waterrepellency of a mortar.However,use caution in interpreting theresults.While the resistance of masonry to water penetrationmay be related to the water absorption of the mortar,it alsodep
10、ends on other factors,such as the workmanship,extent ofbond,and the properties of the masonry units and mortar.NOTE1This test method is specified in Specification C1384 fordemonstrating compliance of mortar admixtures classified as WaterRepellent.In this compliance testing,the admixed mortar is comp
11、ared toa reference mortar made with the same mortar materials except that it doesnot include the admixture.For quality control testing of water repellentpreblended dry mortar mixes,the reference mortar is not typicallyavailable since the water repellent additive is added during the manufac-turing pr
12、ocess prior to bagging the final product.In these cases,theprocedure in Annex A1 can be used to determine the relative resistance ofthe mortar to absorption by capillary uptake.5.Apparatus5.1 BalanceA balance readable and accurate to 0.1 g.5.2 Uptake ContainerA watertight container with a mini-mum c
13、ross sectional area that is at least 50%greater than thetotal area of the specimens test surface(s)and a minimumdepth of 75 mm.Provide a cover for the container to minimizeevaporation.5.2.1 Use specimen supports that allow a minimum of 3 mmclearance from the bottom of the container and that cover am
14、aximum of 10%of the area of the specimens test surface.Use supports made of a material that does not float in water andthat does not rust,expand,or contract as a result of waterexposure.1This test method is under the jurisdiction ofASTM Committee C12 on Mortarsand Grouts for Unit Masonry and is the
15、direct responsibility of SubcommitteeC12.02 on Research and Methods of Test.Current edition approved July 1,2015.Published July 2015.Originally approvedin 1999.Last previous edition approved in 2014 as C1403 14.DOI:10.1520/C1403-15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,o
16、rcontact 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 States1 5.2.2 The container shall be flat so that when a specimen isset on the supports the water level as specified in 7.4 shall notvary by more than 1 mm from one en
