1、Designation:C18716American Association StateHighway and Transportation Officials StandardAASHTO No.:T 129Standard Test Method forAmount of Water Required for Normal Consistency ofHydraulic Cement Paste1This standard is issued under the fixed designation C187;the number immediately following the desi
2、gnation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method covers the determin
3、ation of the normalconsistency of hydraulic cement.1.2 UnitsThe values stated in SI units are to be regardedas standard.No other units of measurement are included in thisstandard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsib
4、ility 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.See 1.4 for aspecific warning statement.1.4 WarningFresh hydraulic cementitious mixtures arecaustic and may cause chemical burns to skin an
5、d tissue uponprolonged exposure.The use of gloves,protective clothing,and eye protection is recommended.Wash contact area withcopious amounts of water after contact.Wash eyes for aminimum of 15 min.Avoid exposure of the body to clothingsaturated with the liquid phase of the unhardened material.Remov
6、e contaminated clothing immediately after exposure.22.Referenced Documents2.1 ASTM Standards:3C219 Terminology Relating to Hydraulic CementC305 Practice for Mechanical Mixing of Hydraulic CementPastes and Mortars of Plastic ConsistencyC511 Specification for Mixing Rooms,Moist Cabinets,Moist Rooms,an
7、d Water Storage Tanks Used in theTesting of Hydraulic Cements and ConcretesC1005 Specification for Reference Masses and Devices forDetermining Mass and Volume for Use in the PhysicalTesting of Hydraulic CementsD1193 Specification for Reagent WaterE177 Practice for Use of the Terms Precision and Bias
8、 inASTM Test Methods3.Terminology3.1 Normal consistency is defined in Terminology standardC219.4.Significance and Use4.1 This test method is intended to be used to determine theamount of water required to prepare hydraulic cement pasteswith normal consistency,as required for certain standard tests.5
9、.Apparatus5.1 Reference Masses and Devices for Determining Mass,conforming to the requirements of Specification C1005.Thedevices for determining mass shall be evaluated for precisionand bias at a total load of 1000 g.5.2 Glass Graduates,200 or 250-mLcapacity,and conform-ing to the requirements of Sp
10、ecification C1005.5.3 Vicat ApparatusThe Vicat apparatus shall consist of aframe A(Fig.1)bearing a movable rod B,weighing 300 g,oneend C,the plunger end,being 10 mm in diameter for a distanceof at least 50 mm,and the other end having a removable needleD,1 mm in diameter and 50 mm in length.The rod B
11、 isreversible,and can be held in any desired position by a setscrew E,and has an adjustable indicator F,which moves overa scale(graduated in millimetres)attached to the frame A.Thepaste is held in a rigid conical ring G,resting on a planenonabsorptive square base plate H,about 100 mm on each side.Th
12、e rod B shall be made of stainless steel having a hardness ofnot less than 35 HRC(See Note 1),and shall be straight withthe plunger end which is perpendicular to the rod axis.The ringshall be made of a noncorroding,nonabsorbent material,andshall have an inside diameter of 70 mm at the base and 60 mm
13、at the top,and a height of 40 mm.In addition to the above,theVicat apparatus shall conform to the following requirements:1This test method is under the jurisdiction of ASTM Committee C01 on Cementand is the direct responsibility of Subcommittee C01.22 on Workability.Current edition approved Dec.1,20
14、16.Published December 2016.Originallyapproved in 1944.Last previous edition approved in 2011 as C187 111.DOI:10.1520/C0187-16.2Section on Safety,Manual of Cement Testing,Annual Book of ASTMStandards,Vol 04.01.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer
15、Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-29
16、59.United States1 Weight of movable rod300 0.5 gDiameter of plunger end of rod10 0.05 mmDiameter of needle1 0.05 mmInside diameter of ring at bottom70 3 mmInside diameter of ring at top60 3 mmHeight of ring40 1 mmGraduated scaleThe graduated scale,when comparedwith a standard scale accurate to within0.1 mm at all points,shall not show adeviation at any point greater than 0.25mm.NOTE1The requirement that the rod be made of stainless steel shallapply only to new Vicat apparatus or replacement rods