1、Designation:C233/C233M14Standard Test Method forAir-Entraining Admixtures for Concrete1This standard is issued under the fixed designation C233/C233M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number
2、in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method covers the testing of materials pro-posed for use as air-entraining admixtures in the field.1.2 The text of this test method re
3、ferences notes andfootnotes which provide explanatory material.These notes andfootnotes(excluding those in tables and figures)shall not beconsidered as requirements of the standard.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated
4、 ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.Some values have only SI units because theinch-pound equivalents are not used in practice.NOTE1Sieve size is i
5、dentified by its standard designation in Speci-fication E11.The alternative designation given in parentheses is forinformation only and does not represent a different standard sieve size.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is ther
6、esponsibility 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:2C33 Specification for Concrete AggregatesC39/C39M Test Method for Compressive Strength of
7、 Cylin-drical Concrete SpecimensC78 Test Method for Flexural Strength of Concrete(UsingSimple Beam with Third-Point Loading)C136 Test Method for Sieve Analysis of Fine and CoarseAggregatesC143/C143M Test Method for Slump of Hydraulic-CementConcreteC150 Specification for Portland CementC157/C157M Tes
8、t Method for Length Change of HardenedHydraulic-Cement Mortar and ConcreteC172 Practice for Sampling Freshly Mixed ConcreteC173/C173M Test Method forAir Content of Freshly MixedConcrete by the Volumetric MethodC185 Test Method for Air Content of Hydraulic CementMortarC192/C192M Practice for Making a
9、nd Curing Concrete TestSpecimens in the LaboratoryC231 Test Method for Air Content of Freshly Mixed Con-crete by the Pressure MethodC232 Test Methods for Bleeding of ConcreteC260 Specification for Air-Entraining Admixtures for Con-creteC403/C403M Test Method for Time of Setting of ConcreteMixtures b
10、y Penetration ResistanceC666/C666M Test Method for Resistance of Concrete toRapid Freezing and ThawingC670 Practice for Preparing Precision and Bias Statementsfor Test Methods for Construction MaterialsD75 Practice for Sampling AggregatesD1193 Specification for Reagent WaterE11 Specification for Wov
11、en Wire Test Sieve Cloth and TestSievesE70 Test Method for pH of Aqueous Solutions With theGlass Electrode2.2 ACI Standards:ACI 211.1 Recommended Practice for Selecting Proportionsfor Normal,Heavyweight,and Mass Concrete33.Significance and Use3.1 This test method is used to develop data for comparis
12、onwith the requirements of Specification C260.These tests arebased on arbitrary stipulations permitting highly standardizedtesting in the laboratory,and are not intended to simulate actualjob conditions.4.Materials4.1 CementThe cement used in any series of tests shall beeither the cement proposed fo
13、r specific work in accordance1This test method is under the jurisdiction of ASTM Committee C09 onConcrete and Concrete Aggregatesand is the direct responsibility of SubcommitteeC09.23 on Chemical Admixtures.Current edition approved Oct.1,2014.Published November 2014.Originallyapproved in 1949.Last p
14、revious edition approved in 2011 as C233/C233M11.DOI:10.1520/C0233_C0233M-14.2For 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 AS
15、TM website.3American Concrete Institute Manual of Concrete Practice,Part 1,pp.211-1 to211-38(1993).*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 with 4.4,a Type I or Type
16、II cement conforming to Specifica-tion C150,or a blend of two or more cements,in equal parts.Each cement of the blend shall conform to the requirements ofeither Type I or Type II,Specification C150.If a blend ofcements is used,it shall be a combination which produces anair content of less than 10%when tested in accordance withTest Method C185(Note 5).4.2 AggregatesExcept when tests are made in accordancewith 4.4,using the aggregates proposed for specific work,thefine and coarse aggregates used i
