ASTM C1437-2007 Standard Test Method for Flow of Hydraulic Cement Mortar《水硬水泥灰浆流动性的标准试验方法》.pdf

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1、Designation: C 1437 07Standard Test Method forFlow of Hydraulic Cement Mortar1This standard is issued under the fixed designation C 1437; 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 parent

2、heses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This test method covers the determination of flow ofhydraulic cement mortars.1.2 The values stated in SI units are to be regarded as thestandard. Val

3、ues in parentheses 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

4、ory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C 109/C 109M Test Method for Compressive Strength ofHydraulic Cement Mortars (Using 2-in. or 50-mm CubeSpecimens)C 185 Test Method for Air Content of Hydraulic CementMortarC 230/C 230M Specification for Flow Table for Use in Tes

5、tsof Hydraulic CementC511 Specification for Mixing Rooms, Moist Cabinets,Moist Rooms, and Water Storage Tanks Used in theTesting of Hydraulic Cements and Concretes3. Significance and Use3.1 This test method is intended to be used to determine theflow of hydraulic cement mortars, and of mortars conta

6、iningcementitious materials other than hydraulic cements.3.2 While flow is not usually included in hydraulic cementspecifications, it is commonly used in standard tests thatrequire the mortar to have a water content that provides aspecified flow level.4. Apparatus4.1 Flow Table, Flow Mold, Conformin

7、g to the require-ments of Specification C 230.4.2 Caliper, Conforming to the requirements of Specifica-tion C 230. Alternatively, any outside-measuring caliper con-structed of corrosion-resistant material may be used, providedthat it is incremented in millimetres and its maximum extent ofmeasuring i

8、s at least 260 mm (1014 in.).4.3 Tamper, conforming to the requirements of Test MethodC 109.4.4 Trowel, having a steel blade 100 to 150 mm (4 to 6 in.)in length, with straight edges. The edges when placed on aplane surface shall not depart from straightness by more than 1mm (0.04 in.) (Note 1).4.5 S

9、traightedge, made of steel, shall be at least 200 mm (8in.) long and not less than 1.5 mm (0.06 in.) nor more than 3.5mm (0.14 in.) in thickness. Its edge shall not depart from aplane surface by more than 1 mm (0.04-in.) (Note 1).NOTE 1The trowel specified in Test Method C 109 and the straight-edge

10、specified in Test Method C 185 may be used for this purpose,providing they comply with the planeness indicated.5. Temperature and Humidity5.1 The temperature and relative humidity of the air in themixing room shall be as prescribed in Specification C511.6. Materials6.1 Hydraulic Cement MortarA morta

11、r for which thedetermination of flow is specified or desired.7. Procedure7.1 Determination of Flow:7.1.1 Carefully wipe the flow table clean and dry, and placethe flow mold at the center. Place a layer of mortar about 25mm (1 in.) in thickness in the mold and tamp 20 times with thetamper. The tampin

12、g pressure shall be just sufficient to ensureuniform filling of the mold. Then fill the mold with mortar andtamp as specified for the first layer. Cut off the mortar to a planesurface flush with the top of the mold by drawing thestraightedge or the edge of the trowel with a sawing motionacross the t

13、op of the mold. Wipe the table top clean and dry,being especially careful to remove any water from around theedge of the flow mold. Lift the mold away from the mortar 1min after completing the mixing operation. Immediately dropthe table 25 times in 15 s, unless otherwise specified.1This test method

14、is under the jurisdiction of ASTM Committee C01 on Cementand is the direct responsibility of Subcommittee C01.22 on Workability.Current edition Nov. 1, 2007. Published December 2007. Originally approved in1999. Last previous edition approved in 2001 as C 1437 - 01.2For referenced ASTM standards, vis

15、it 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.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International,

16、 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Copyright by ASTM Intl (all rights reserved); Wed Mar 4 21:22:34 EST 2009Downloaded/printed byGuo Dehua (CNIS) pursuant to License Agreement. No further reproductions authorized.7.1.2 If using the caliper specified

17、in Specification C 230,measure the diameter of the mortar along the four lines scribedin the table top, recording each diameter as the number ofcaliper divisions, estimated to one tenth of a division. If someother caliper is being used, measure the diameter of the mortaralong the four lines scribed

18、in the table top, recording eachdiameter to the nearest millimetre.8. Calculation8.1 The flow is the resulting increase in average basediameter of the mortar mass, expressed as a percentage of theoriginal base diameter.8.2 If using the caliper specified in Specification C 230, addthe four readings,

19、and record the total. This gives the flow inpercent. If using some other caliper, compute the flow inpercent by dividing “A” by the original inside base diameter inmillimetres and multiplying by 100.where:A = average of four readings in millimetres, minus theoriginal inside base diameter in millimet

20、res.Report the flow to the nearest 1 %.9. Precision and Bias9.1 PrecisionThe single-operator, within-laboratory stan-dard deviation has been found to be 4 % flow. Therefore,results of two properly conducted tests by the same operator onsimilar batches should not differ by more than 11 % (Note 2).9.1

21、.1 The multilaboratory standard deviation has beenfound to be 11 %. Therefore, results of two different laborato-ries on similar batches should not differ by more than 31 %flow (Note 2).NOTE 2Data produced when water content is being varied to obtain agiven flow is not applicable for this purpose. O

22、nly data where flow hasbeen determined using a given cement and fixed water content isapplicable. Consequently, the only data currently available is that ex-tracted from the CCRL Proficiency Sample Program for CS Flow onC 109 mortars (dropping the flow table 25 times in 15 s). The data forSample Nos

23、. 109, 110, 111, and 112 have been used to develop theprecision statements given.9.2 BiasSince there is no accepted reference materialsuitable for determining flow available, no statement on bias ismade.10. Keywords10.1 flow; hydraulic cement; mortarSUMMARY OF CHANGESCommittee C01 has identified the

24、 location of selected changes to this test method since the last issue,C 1437 01, that may impact the use of this test method. (Approved November 1, 2007)(1) Revised 5.1.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin

25、 this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and mus

26、t be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the

27、responsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700

28、, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).C1437072Copyright by ASTM Intl (all rights reserved); Wed Mar 4 21:22:34 EST 2009Downloaded/printed byGuo Dehua (CNIS) pursuant to License Agreement. No further reproductions authorized.