ASTM C937-2002 Standard Specification for Grout Fluidifier for Preplaced-Aggregate Concrete《预置集料混凝土的灌浆流动机械的标准规范》.pdf
《ASTM C937-2002 Standard Specification for Grout Fluidifier for Preplaced-Aggregate Concrete《预置集料混凝土的灌浆流动机械的标准规范》.pdf》由会员分享,可在线阅读,更多相关《ASTM C937-2002 Standard Specification for Grout Fluidifier for Preplaced-Aggregate Concrete《预置集料混凝土的灌浆流动机械的标准规范》.pdf(3页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: C 937 02Standard Specification forGrout Fluidifier for Preplaced-Aggregate Concrete1This standard is issued under the fixed designation C 937; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers fluidifier for grout used
3、 forpreplaced-aggregate (PA) concrete.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationpurposes only.1.3 The following precautionary caveat pertains only to thetest method portion, Section 8, of this standard: This standarddoes n
4、ot purport to address all of the safety concerns, if any,associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.2. Referenced Documents2.1 ASTM Standards:C
5、 33 Specification for Concrete Aggregates2C 150 Specification for Portland Cement3C 618 Specification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan for Use in Concrete2C 637 Specification for Aggregates for Radiation-ShieldingConcrete2C 938 Practice for Proportioning Grout Mixtures forPreplac
6、ed-Aggregate Concrete2C 939 Test Method for Flow of Grout for Preplaced-Aggregate Concrete (Flow Cone Method)2C 940 Test Method for Expansion and Bleeding of FreshlyMixed Grouts for Preplaced-Aggregate Concrete in theLaboratory2C 941 Test Method for Water Retentivity of Grout Mixturesfor Preplaced-A
7、ggregate Concrete in the Laboratory2C 942 Test Method for Compressive Strength of Grouts forPreplaced-Aggregate Concrete in the Laboratory2C 943 Practice for Making Test Cylinders and Prisms forDetermining Strength and Density of Preplaced-AggregateConcrete in the Laboratory2C 953 Test Method for Ti
8、me of Setting of Grouts forPreplaced-Aggregate Concrete in the Laboratory23. Ordering Information3.1 The purchaser shall specify the material desired as“grout fluidifier for preplaced-aggregate concrete.” The mate-rial shall meet the requirements of this specification.4. Materials4.1 Grout ingredien
9、ts shall conform to the following re-quirements:4.1.1 Portland cement shall meet the requirements of Speci-fication C 150 for the type to be used.4.1.2 Pozzolan shall meet the requirements of SpecificationC 618.4.1.3 Fine aggregate shall meet the requirements of Speci-fication C 33 except that gradi
10、ng shall conform to SpecificationC 637, Table number 2, Grading 1 for Fine Aggregate.5. Physical Requirements5.1 The fluidifier, when tested in grout as specified herein,shall conform to the following requirements:Reduction in mixing water, min, % of control(Test Method C 941) 3Expansion, 3 h after
11、mixing,(Test Method C 940) See Table 1Bleeding, 3 h after mixing, (Test Method C 940),max, % 2Increase in water retentivity (Test Method C 941),min, % of control 60Initial setting time, min, h (Test Method C 953) 4Final setting time, max, h (Test Method C 953) 241This specification is under the juri
12、sdiction of ASTM Committee C09 onConcrete and Concrete Aggregates and is the direct responsibility of SubcommitteeC9.41 on Concrete for Radiation Shielding.Current edition approved Dec. 10, 2002. Published February 2003. Originallyapproved in 1980. Last previous edition approved in 1997 as C 93797.2
13、Annual Book of ASTM Standards, Vol 04.02.3Annual Book of ASTM Standards, Vol 14.01.TABLE 1 Expansion LimitsAlkali Content of Cement, %Expressed as Na2OExpansion Limits, %0.80 or more 7 to 140.40 to 0.79 5 to 120.39 or less 3 to 91Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West
14、 Conshohocken, PA 19428-2959, United States.Compressive strength at 7 days and 28 days, (TestMethod C 942), min, % of control 906. Composition6.1 The fluidifier shall be composed of materials that willyield a product having the properties stipulated under PhysicalRequirements when tested in accordan
15、ce with this specifica-tion.7. Sampling7.1 The test sample of fluidifier shall have a mass of at least225g(12 lb) and shall be representative of the materialsupplied. When feasible, the test sample shall be compositedfrom grab samples taken from not fewer than four packagesselected at random.8. Test
16、 Method8.1 Summary of MethodPhysical properties of grout con-taining fluidifier are determined and compared with corre-sponding properties of grout made without fluidifier.8.2 Significance and UseThe effects of adding fluidifier toa standard grout mixture are determined in order to evaluate itsabili
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