ASTM_F_1080_-_93_2013.pdf

Designation:F108093(Reapproved 2013)Standard Test Method forDetermining the Consistency of Viscous Liquids Using aConsistometer1This standard is issued under the fixed designation F1080;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 parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method describes a procedure for the determi-nation of the flow of a standard volume of a semisolid or thickliquid under its own weight.1.2 The values stated in SI units are to be regarded as thestandard.The values 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 regulatory limitations prior to use.2.Summary of Test Method2.1 A sample of the material to be tested is poured into areservoir and the distance of flow in a horizontal direction isread from a ruled track after a fixed time following thematerials release from the reservoir.3.Significance and Use3.1 This measurement of flow gives results that cannot bepredicted with viscosity measurements,due to surface tensionand density effects.The measured flow,is related to flowperformance of viscous materials sprayed on aircraft surfacesor other large structures.4.Apparatus4.1 Consistometer constructed as described in Annex A1.4.2 Timing Device accurate to 61 s.4.3 Mixer capable of 1600 r/min and fitted with a 25-mm(1-in.)diameter three-bladed propeller.4.4 Beaker,500-mL.5.Procedure5.1 Bring the material to be tested and the apparatus to thesame ambient temperature in the range from 20 to 25C(68 to77F).5.2 Agitate 250 mL of the material to be tested using themixer set at 1600 r/min,for 1 min 6 5 s,or until a vortex formsthat indicates all of the sample has been exposed to shear.Avoid aeration of the sample as this may cause evaporation ofsolvents.5.3 Place the consistometer on a level surface and adjust theleveling screws until the bubble is centered.5.4 Close the consistometer gate and set the trigger.5.5 Fill the consistometer reservoir with the material to betested(approximately 100 mL),and level the surface with aspatula or a straight edge.5.6 Start the test by simultaneously tripping the consistom-eter gate trigger and starting the timing device.At 5 min 6 1s(unless otherwise specified),read the distance the materialhas flowed.Average the result to the nearest 0.5 cm by takingthe maximum distance indicated in the center of the trough andadding this to the minimum distance at the edge of the troughand dividing the result by two.6.Report6.1 The report shall include the following:6.1.1 Material name or reference,type and lot number.6.1.2 Average distance of flow to nearest 0.5 cm.6.1.3 Test temperature in C to 61C.6.1.4 Duration of test in minutes and seconds.7.Precision and Bias7.1 Precision:7.1.1 ReproducibilityViscous materials often vary in con-sistency dependent upon age,temperature,and shear history.Caution shall be exercised between laboratories regarding thehistory of a sample.7.1.2 Duplicate results by the same operator on the samesample shall be within 0.5 cm.1This test method is under the jurisdiction of ASTM Committee F07 onAerospace and Aircraft and is the direct responsibility of Subcommittee F07.07 onQualification Testing of Aircraft Cleaning Materials.Current edition approved Dec.1,2013.Published December 2013.Originallyapproved in 1987.Last previous edition approved in 2008 as F1080 93(2008).DOI:10.1520/F1080-93R13.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 7.2 BiasNo statement can be made regarding bias as thereare no absolute nor widely accepted standards for the propertymeasured by the consistometer.8.Keywords8.1 consistometer;liquids;viscousANNEX(Mandatory Information)A1.CONSISTOMETERA1.1 Consistometer shown in Fig.A1.1.It consists of thefollowing parts constructed of stainless steel.A1.1.1 Reservoir,4-cm high,5-cm long,fitted with springstainless steel trap door on one side.A1.1.2 Stainless Steel Track with side walls(24 cm long,5cm wide)with ruled markings each12cm.A1.1.3 Leveling Device,for proper leveling of track.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin 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 must be reviewed every five years