ASTM_C_230_-_C_230M_-_14.pdf

Designation:C230/C230M14Standard Specification forFlow Table for Use in Tests of Hydraulic Cement1This 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,the year of last revision.A number 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 specification covers requirements for the flow tableand accessory apparatus(Note 1)used in making flow tests forconsistency of mortars in tests of hydraulic cement,such as butnot limited to Test Method C1437.NOTE1To help clarify the design of the flow table and accessoryapparatus see the drawing in Fig.1 Fig.2.This drawing is forinformational purposes only.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated 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.It is permissible to use an inch-pound caliperand mold with a SI flow table or a SI caliper and mold with aninch-pound flow table.It is not permissible to mix a SI moldwith an inch-pound caliper or an inch-pound mold with a SIcaliper.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 regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C1437 Test Method for Flow of Hydraulic Cement Mortar3.Flow Table and Frame3.1 The flow table apparatus shall consist of an integrallycast rigid iron frame and a circular rigid table top 10 6 0.1 in.255 6 2.5 mm in diameter,with a shaft attached perpendicu-lar to the table top by means of a screw thread.The table topand shaft with contact shoulder shall be mounted on a frame insuch a manner that it can be raised and dropped verticallythrough the specified height of 0.500 6 0.005 in.12.7 60.13 mm for new tables and of 0.500 6 0.015 in.12.7 60.38 mm for tables in use,by means of a rotated cam.Thetable top shall have a fine machined plane surface,free ofblowholes and surface defects.The top shall be scribed witheight equidistant lines 258in.68 mm long,extending fromthe outside circumference toward the center of the table.Eachline shall end with a scribed arc,14in.6 mm long,whosecenter point is the center of the table top with a radius of 238in.59.5 mm.The scribe lines shall be made with a 60 tool to adepth of 0.01 in.0.25 mm.The table top shall be of cast brassor bronze having a Rockwell hardness number not less than 25HRB with an edge thickness of 0.3 in.7.5 mm,and shall havesix integral radial stiffening ribs.The table top and attachedshaft shall weigh 9 6 0.1 lb 4.08 6 0.05 kg and the weightshall be symmetrical around the center of the shaft.3.2 The cam and vertical shaft shall be of medium carbonmachinery steel,hardened on the end of the shaft contactingthe cam and the tip of the cam contacting the shaft.The shaftshall be straight and the difference between the diameter of theshaft and the diameter of the bore of the frame shall be not lessthan 0.002 in.0.05 mm and not more than 0.003 in.0.08 mm for new tables and shall be maintained at 0.002 to0.010 in.0.05 to 0.25 mm for tables in use.The end of theshaft shall not fall upon the cam at the end of the drop,but shallmake contact with the cam not less than 120 from the point ofdrop.The face of the cam shall be a smooth spiraled curve ofuniformly increasing radius from12to 114in.13 to 32 mm in360 and there shall be no appreciable jar as the shaft comesinto contact with the cam.The cam shall be so located and thecontact faces of the cam and shaft shall be such that the tabledoes not rotate more than one revolution in 25 drops.Thesurfaces of the frame and of the table that come into contact atthe end of the drop shall be maintained smooth,plane,andhorizontal and parallel with the upper surface of the table andshall make continuous contact over a full 360.3.3 The supporting frame of the flow table shall be inte-grally cast of fine-grained,high-grade cast iron.The framecasting shall have three integral stiffening ribs extending thefull height of the frame and located 120 apart.The top of theframe shall be chilled to a depth of approximately14in.6 mm,and the face shall be ground and lapped square with1This specification is under the jurisdiction of ASTM Committee C01 onCement and is the direct responsibility of Subcommittee C01.22 on Workability.Current edition approved Oct.1,2014.Published October 2014.Originallyapproved in 1949.Last previous edition approved in 2013 as C230/C230M 13.DOI:10.1520/C0230_C0230M-14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Custom