1、This international standard was developed in accordance with internationally recgnized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(T
2、BT)Committee.Designation:C230/C230M-20NTERNATIONALStandard Specification forFlow Table for Use in Tests of Hydraulic CementThis standard is issued under the fixed designation C230/C230M:the number immediately following the designation indicates the yearof original adoption or.in the case of revision
3、.the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope*C219 Terminology Relating to Hydraulic and Other Inor-1.1 This specification covers requirements for the flow t
4、ableganic Cementsand accessory apparatus(Note 1)used in making flow tests forC1437 Test Method for Flow of Hydraulic Cement Mortarconsistency of mortars in tests of hydraulic cement,such as but3.Terminologynot limited to Test Method C1437.3.1 Definitions:NorE 1-To help clarify the design of the flow
5、 table and accessory3.1.1 The terms in this standard specification are defined inapparatus see the drawing in Fig.I Fig.2.This drawing is forinformational purposes only.Terminology C125 and Terminology C219.1.2 The values stated in either SI units or inch-pound units4.Flow Table and Frameare to be r
6、egarded separately as standard.The values stated in4.1 The flow table apparatus shall consist of an integrallyeach system may not be exact equivalents;therefore,eachcast rigid iron frame and a circular rigid table top 100.1 in.system shall be used independently of the other.Combining255 2.5 mmin dia
7、meter,with a shaft attached perpendicu-values from the two systems may result in non-conformancelar to the table top by means of a screw thread.The table topwith the standard.It is permissible to use an inch-pound caliperand shaft with contact shoulder shall be mounted on a frame inand mold with a S
8、I flow table or a SI caliper and mold with ansuch a manner that it can be raised and dropped verticallyinch-pound flow table.It is not permissible to mix a SI moldthrough the specified height of 0.500 0.005 in.12.7with an inch-pound caliper or an inch-pound mold with a SI0.13 mmfor new tables and of
9、 0.500 0.015 in.12.7caliper.0.38 mmfor tables in use,by means of a rotated cam.The1.3 This standard does not purport to address all of thetable top shall have a fine machined plane surface,free ofsafety concerns,if any,associated with its use.It is theblowholes and surface defects.The top shall be s
10、cribed withresponsibility of the user of this standard to establish appro-eight equidistant lines 25s in.68 mmlong,extending frompriate safety and health practices and determine the applica-the outside circumference toward the center of the table.Eachbility of regulatory limitations prior to use.lin
11、e shall end with a scribed arc,4 in.6 mmlong,whose1.4 This international standard was developed in accor-center point is the center of the table top with a radius of 2%s in.dance with internationally recognized principles on standard-59.5 mml.The scribe lines shall be made with a 60 tool to aization
12、 established in the Decision on Principles for thedepth of 0.01 in.0.25 mm.The table top shall be of cast brassDevelopment of International Standards,Guides and Recom-or bronze having a Rockwell hardness number not less thanmendations issued by the World Trade Organization Technical25 HRB with an ed
13、ge thickness of 0.3 in.7.5 mm,and shallBarriers to Trade(TBT)Committee.have six integral radial stiffening ribs.The table top andattached shaft shall weigh 90.1 Ib 4.08 0.05 kgand the2.Referenced Documentsweight shall be symmetrical around the center of the shaft.2.1 ASTM Standards:24.2 The cam and
14、vertical shaft shall be of medium carbonC125 Terminology Relating to Concrete and Concrete Ag-machinery steel,hardened on the end of the shaft contactinggregatesthe cam and the tip of the cam contacting the shaft.The shaftshall be straight and the difference between the diameter of theshaft and the
15、diameter of the bore of the frame shall be not lessThis specification is under the jurisdiction of ASTM Committee Col onthan 0.002 in.0.05 mmand not more than 0.003 inCement and is the direct responsibility of Subcommittee C0l.22 on Workability.Current edition approved June 1,2020.Published July 202
16、0.Originally approved0.08 mmfor new tables and shall be maintained at 0.002 toin 1949.Last previous edition approved in 2014 as C230/C230M-14.DOI:0.010 in.0.05 to 0.25 mmfor tables in use.The end of the10.1520/C0230_C0230M-20.shaft shall not fall upon the cam at the end of the drop,but shall2 For re
17、ferenced ASTM standards,visit the ASTM website,www.astm.org,ormake contact with the cam not less than 120 from the point ofcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page ondrop.The face of the cam shal
18、l be a smooth spiraled curve ofthe ASTM website.uniformly increasing radius from to 1V4 in.13 to 32 mmin*A Summary of Changes section appears at the end of this standardCopyright ASTM Intemational,100 Barr Harbor Drive,PO Box C700.West Conshohocken.PA 19428-2959.United StatesC230/C230M-20360 and the
19、re shall be no appreciable jar as the shaft comesin.13 mmthick and the same size as the pedestal bottominto contact with the cam.The cam shall be so located and theor four pieces of padding in.13 mmthick and approxi-contact faces of the cam and shaft shall be such that the tablemately 4 in.100 mmsqu
20、are,shall be inserted under thedoes not rotate more than one revolution in 25 drops.Thepedestal or the four corners,respectively.The flow table shallsurfaces of the frame and of the table that come into contact atbe checked frequently for levelness of the table top,stability ofthe end of the drop sh
21、all be maintained smooth,plane,andthe pedestal,and tightness of the bolts and nuts in the tablehorizontal and parallel with the upper surface of the table andbase and the pedestal table.(A torque of 20 Ib-ft 27 N.misshall make continuous contact over a full 360.recommended when tightening those fast
22、enings.4.3 The supporting frame of the flow table shall be inte-5.3 The table top,after the frame has been mounted on thegrally cast of fine-grained,high-grade cast iron.The framepedestal,shall be level along two diameters at right angles tocasting shall have three integral stiffening ribs extending
23、 theeach other,in both the raised and lowered positions.full height of the frame and located 120 apart.The top of theframe shall be chilled to a depth of approximately in.6.Flow Table Lubrication6 mm,and the face shall be ground and lapped square with6.1 The vertical shaft of the table shall be kept
24、 clean andthe bore to give 360 contact with the shaft shoulder.Theshall be lightly lubricated(see Note 4)with a light oilunderside of the base of the frame shall be ground to secure a(SAE-10).Oil shall not be present between the contact faces ofcomplete contact with the steel plate beneath.the table
25、 top and the supporting frame.Oil on the cam face will4.4 The flow table shall be driven by a motor(Note 2),lessen wear and promote smoothness of operation.The tableconnected to the cam shaft through an enclosed worm gearshould be raised and permitted to drop a dozen or more timesspeed reducer and f
26、lexible coupling.The speed of the cam shaftjust prior to use if it has not been operated for some time.NoTE 4-It has been demonstrated that an absence of lubrication on theshall be approximately 100 r/min.The motor drive mechanismtable shaft will significantly reduce the flow reading.shall not be fa
27、stened or mounted on the table base plate orframe.7.Mold and CaliperNoTE 2-A V2o-hp 40 Wmotor has been found adequate.7.1 The conical mold for casting the flow specimen shall beof cast bronze or brass.The Rockwell hardness number of the4.5 The performance of a flow table shall be consideredmetal sha
28、ll be not less than 25 HRB.The height of the moldsatisfactory if,in verification tests,the table gives a flow valueshall be 2.00 0.02 in.50.0+0.5 mm.The diameter of thethat does not differ by more than 5 percentage points from flowtop opening shall be 2.75 0.02 in.70.0 0.5 mmfor newvalues obtained w
29、ith a suitable calibration material(see Note3).3.4 Perform the verification at least every 2%years.molds and 2.75+0.05 in.70.0 1.3 mmand-0.02 in.-0.5 mmfor molds in use.The diameter of the bottomNorE 3-Some causes of and solutions to unsatisfactory performanceof the flow table may be found in the se
30、ction on flow tables in the A.STMopening shall be 4.00 0.02 in.100.00.5 mmfor newManual of Cement Testing.molds and 4.00+0.05 in.1.3 mmand-0.02 in.-0.5 mmfor molds in use.The surfaces of the base and top shall be5.Flow Table Mountingparallel and at right angles to the vertical axis of the cone.The5.
31、1 The flow table frame shall be tightly bolted to a cast ironmold shall have a minimum wall thickness of 0.2 in.5 mm.or steel plate at least I in.25 mmthick and 10 in.250 mmThe outside of the top edge of the mold shall be shaped so assquare.The top surface of this plate shall be machined to ato prov
32、ide an integral collar for convenient lifting of the mold.smooth plane surface.The plate shall be anchored to the top ofAll surfaces shall be machined to a smooth finish.A circulara concrete pedestal by four V2-in.13 mmbolts that passshield approximately 10 in.255 mmin diameter,with athrough the pla
33、te and are imbedded at least 6 in.150 mmincenter opening approximately 4 in.100 mmin diameter,the pedestal.The pedestal shall be cast inverted on the basemade of nonabsorbing material not attacked by the cement,plate.A positive contact between the base plate and theshall be used with the flow mold t
34、o prevent mortar frompedestal shall be obtained at all points.No nuts or other suchspilling on the table top.leveling devices shall be used between the plate and the7.2 A caliper consisting of one fixed jaw and one jawpedestal.Leveling shall be effected by suitable means undermovable along a permane
35、nt scale shall be provided forthe base of the pedestal.measuring the diameter of the mortar after it has been spread5.2 The pedestal shall be 10 to 11 in.250 to 275 mmlby the operation of the table.The scale shall be machinesquare at the top,and 15 to 16 in.375 to 400 mmsquare atdivided into 40 incr
36、ements with 0.16 in.4.0 mmbetweenthe bottom,25 to 30 in.625 to 750 mmin height,and shall bedivisions with major division lines every five divisions and theof monolithic construction,cast from concrete weighing atincrement number every ten divisions(Note 5).The construc-least 140 Ib/ft2240 kg/m.A sta
37、ble gasket cork padding,tion and accuracy of the caliper shall be such that the distancebetween the jaws shall be 4+0.01 in.100+0.25 mmwhenthe indicator is set at zero.3 Such a material can be obtained from the Cement and Concrete ReferenceLaboratory(CCRL).http:/www.ccrl.us.NorE 5-The caliper is gra
38、duated to indicate one fourth of the actualSupporting data have been filed at ASTM International Headquarters and mayflow percentage,so that the readings of four measurements on the caliperbe obtained by requesting Research Report RR:C01-1006.Contact ASTM Customermay be added to give the flow value
39、without the necessity of calculatingService at serviceastm.org.the average of four individual measurements of the total flow.C230/C230M-20Set Screw-0.498diamTo flexible shaftThreaded号-20Machine and lap square with shaftand to give 360 contact1UNF-2A-1diam01-Cam shaftBearings-Medium carbon machinery
40、steelHarden tipA-Harden endsurfaceApprox 2adjusted to give dropof00o5orking face of camNote:Curve from B to A to be a smooth2-Shaftspiral of uniformly increasing radiusMedium carbon machinery steelfromto1in3601-Cam-Medium carbon machinery steelChill to a depth of approxBevel to a depth ofaGrind and
41、lap face squarewith bore and to give 360contact with shaftshoulderBore and Reamo若o+0.625Section A-AFine grained high grade cast iron1-StandCast Iron+1Spot facerad-16rad1 diam hole in baseFIG.1 Flow Table and Accessory Apparatus(Partial)(IP)34C230/C230M-20卜2.750.020.2min4.00t0.0240 div at0.16per div1
42、-MoldBronze(Rockwell B-25)aPinned andsoldered joints21-Caliper10”diam0Bronze(Rockwell B-55)Note:High temperature or brazing solderto be used in soldered jointsmaxWith indicator set at zero thedistance between jaws shall be 4*0.01Pinned and言Ruled linesolderedjointo!一Threaded3-20 UNF-2B40.500dia1-TableBronze(Rockwell B-25 min)Scribe lines on face of tablewith 60 tool to depth of 0.01Pinned andsolderedjointFIG.1 Flow Table and Accessory Apparatus(Partial)(IP)(continued)4
