ASTM C230 C230M-2013 Standard Specification for Flow Table for Use in Tests of Hydraulic Cement《水凝水泥试验用流量表的标准规格》.pdf
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1、Designation: C230/C230M 08C230/C230M 13Standard 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 ye
2、ar 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*Scope1.1 This specification covers requirements for the flow table and accessory apparatus (Note 1) used in making
3、flow tests forconsistency of mortars in tests of hydraulic cement, such as but not limited to Test Method C1437.NOTE 1To help clarify the design of the flow table and accessory apparatus see the drawing in Fig. 1 Fig. 2. This drawing is for informationalpurposes only.1.2 The values stated in either
4、SI units or inch-pound units are to be regarded separately as standard. The values stated in eachsystem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the standard. It is permissib
5、le to use an inch-pound caliper and mold with a SIflow table or a SI caliper and mold with an inch-pound flow table. It is not permissible to mix a SI mold with an inch-pound caliperor an inch-pound mold with a SI caliper.1.3 This standard does not purport to address all of the safety concerns, if a
6、ny, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C1437 Test Method for Flow of Hydraulic Cement Morta
7、r3. Flow Table and Frame3.1 The flow table apparatus shall consist of an integrally cast rigid iron frame and a circular rigid table top 10 6 0.1 in. 2556 2.5 mm in diameter, with a shaft attached perpendicular to the table top by means of a screw thread. The table top and shaftwith contact shoulder
8、 shall be mounted on a frame in such a manner that it can be raised and dropped vertically through thespecified height of 0.500 6 0.005 in. 12.76 12.7 6 0.13 mm for new tables and of 0.500 6 0.015 in. 12.7 6 0.38 mm fortables in use, by means of a rotated cam. The table top shall have a fine machine
9、d plane surface, free of blowholes and surfacedefects. The top shall be scribed with eight equidistant lines 258 in. 68 mm long, extending from the outside circumference towardthe center of the table. Each line shall end with a scribed arc, 14 in. 6 mm long, whose center point is the center of the t
10、able topwith a radius of 238 in. 59.5 mm. The scribe lines shall be made with a 60 tool to a depth of 0.01 in. 0.25 mm. The table topshall be of cast brass or bronze having a Rockwell hardness number not less than 25 HRB with an edge thickness of 0.3 in. 7.5mm, and shall have six integral radial sti
11、ffening ribs. The table top and attached shaft shall weigh 9 6 0.1 lb 4.08 6 0.05 kgand the weight shall be symmetrical around the center of the shaft.3.2 The cam and vertical shaft shall be of medium carbon machinery steel, hardened on the end of the shaft contacting the camand the tip of the cam c
12、ontacting the shaft. The shaft shall be straight and the difference between the diameter of the shaft and thediameter of the bore of the frame shall be not less than 0.002 in. 0.05 mm and not more than 0.003 in. 0.08 mm for new tablesand shall be maintained at 0.002 to 0.010 in. 0.05 to 0.25 mm for
13、tables in use. The end of the shaft shall not fall upon the camat the end of the drop, but shall make contact with the cam not less than 120 from the point of drop. The face of the cam shallbe a smooth spiraled curve of uniformly increasing radius from 12 to 114 in. 13 to 32 mm in 360 and there shal
14、l be no appreciablejar as the shaft comes into contact with the cam. The cam shall be so located and the contact faces of the cam and shaft shall besuch that the table does not rotate more than one revolution in 25 drops. The surfaces of the frame and of the table that come into1 This specification
15、is under the jurisdiction of ASTM Committee C01 on Cement and is the direct responsibility of Subcommittee C01.22 on Workability.Current edition approved July 1, 2008June 1, 2013. Published August 2008July 2013. Originally approved in 1949. Last previous edition approved in 20032008 asC230/C230M 03.
16、C230/C230M 08. DOI: 10.1520/C0230_C0230M-08.10.1520/C0230_C0230M-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM w
17、ebsite.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult pr
18、ior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19
19、428-2959. United States1contact at the end of the drop shall be maintained smooth, plane, and horizontal and parallel with the upper surface of the tableand shall make continuous contact over a full 360.3.3 The supporting frame of the flow table shall be integrally cast of fine-grained, high-grade c
20、ast iron. The frame casting shallhave three integral stiffening ribs extending the full height of the frame and located 120 apart. The top of the frame shall be chilledto a depth of approximately 14 in. 6 mm, and the face shall be ground and lapped square with the bore to give 360 contact withthe sh
21、aft shoulder. The underside of the base of the frame shall be ground to secure a complete contact with the steel plate beneath.3.4 The flow table shall be driven by a motor (Note 2), connected to the cam shaft through an enclosed worm gear speed reducerand flexible coupling. The speed of the cam sha
22、ft shall be approximately 100 r/min. The motor drive mechanism shall not befastened or mounted on the table base plate or frame.NOTE 2A 120-hp 40-W motor has been found adequate.3.5 The performance of a flow table shall be considered satisfactory if, in calibration tests, the table gives a flow valu
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