1、Designation:C1622/C1622M10(Reapproved 2016)1Standard Specification forCold-Weather Admixture Systems1This standard is issued under the fixed designation C1622/C1622M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last re
2、vision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEEditorially corrected ASTM designation references in October 2016.1.Scope*1.1 This specification covers cold-weather admixture sys-tems
3、to be added to hydraulic-cement concrete when thetemperature of the concrete immediately after placement willbe as low as-5.0 C 23.0 F prior to the time of initial set.1.2 This specification stipulates tests of the cold-weatheradmixture system with suitable materials as described in 11.1 11.3 or wit
4、h materials proposed for specific work(See 11.5).Unless otherwise requested by the purchaser,tests shall bemade using suitable concreting materials as described in 11.1 11.3.NOTE1Whenever practicable,tests should be made using theconcreting materials,the mixture proportions,and batching sequenceprop
5、osed for the specific work(See 11.5)because the time of setting,compressive strength gain,and other properties may vary.1.3 This specification provides three levels of testing.1.3.1 Level 1During the initial approval stage,proof ofcompliance with the performance requirements defined inTable 1 demons
6、trates that the cold-weather admixture systemmeets the requirements of this specification.Uniformity andequivalence tests(See Section 6)shall be carried out to provideresults against which later comparisons can be made.1.3.2 Level 2Limited retesting is described in 5.2,5.2.1,and 5.2.2.Proof of compl
7、iance with the requirements of Table1 demonstrates conformity of the admixture system with therequirements of this specification.1.3.3 Level 3For acceptance of a lot or for measuringuniformity within or between lots,when specified by thepurchaser,uniformity and equivalence tests(See Section 6)shall
8、be used.1.4 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.Within the text,theinch-pound units are shown in brackets.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combining
9、values from the two systems may result in non-conformancewith the standard.1.5 The text of this standard references notes and footnotes,which provide explanatory material.These notes and footnotes(excluding those in tables and figures)shall not be consideredas requirements of the standard.1.6 The fo
10、llowing precautionary caveat pertains to the testmethods portion,Sections 11 18,of this specification.Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthprac
11、tices and determine the applicability of regulatory limita-tions prior to use.WARNINGFresh hydraulic cementitiousmixtures are caustic and may cause chemical burns to skin andtissue upon prolonged exposure.22.Referenced Documents2.1 ASTM Standards:3C33/C33M Specification for Concrete AggregatesC39/C3
12、9M Test Method for Compressive Strength of Cylin-drical Concrete SpecimensC125 Terminology Relating to Concrete and Concrete Ag-gregatesC136/C136M Test Method for Sieve Analysis of Fine andCoarse AggregatesC138/C138M Test Method for Density(Unit Weight),Yield,and Air Content(Gravimetric)of ConcreteC
13、143/C143M Test Method for Slump of Hydraulic-CementConcreteC150/C150M Specification for Portland CementC157/C157M Test Method for Length Change of HardenedHydraulic-Cement Mortar and ConcreteC183/C183M Practice for Sampling and the Amount ofTesting of Hydraulic Cement1This specification is under the
14、 jurisdiction of ASTM Committee C09 onConcrete and Concrete Aggregates and is the direct responsibility of SubcommitteeC09.23 on Chemical Admixtures.Current edition approved Oct.1,2016.Published October 2016.Originallyapproved in 2005.Last previous edition approved in 2010 as C1622/C1622M-10.DOI:10.
15、1520/C1622_C1622M-10R16E01.2Section on Safety Precautions,Manual of Aggregates and Concrete Testing,Annual Book of ASTM Standards Vol.04.02.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume in
16、formation,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 C192/C192M Practice for Making and Curing Concrete TestSpecimens in the LaboratoryC231/C231M Test Method forAir Content of Freshly MixedConcrete by the Pressure MethodC260/C260M Specification for Air-Entraining Admixturesfor ConcreteC403/C403M Test Me