1、Designation:C41403(Reapproved 2012)Standard Test Method forWorking,Setting,and Service Strength Setting Times ofChemically Setting Chemical-Resistant Silicate and SilicaMortars1This standard is issued under the fixed designation C414;the number immediately following the designation indicates the yea
2、r 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
3、 of Defense.1.Scope1.1 This test method offers a means of determining theworking time,setting time,and service strength setting time ofchemically setting,chemical-resistant silicate and silica mor-tars.NOTE1For chemical-resistant resin mortars refer to Test MethodsC308.1.2 The values stated in inch-
4、pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresp
5、onsibility 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:2C308 Test Methods for Working,Initial Setting,and ServiceStrength Setting Times of Chemical-
6、Resistant Resin Mor-tarsC579 Test Methods for Compressive Strength of Chemical-Resistant Mortars,Grouts,Monolithic Surfacings,andPolymer ConcretesC904 Terminology Relating to Chemical-Resistant Nonme-tallic Materials3.Terminology3.1 DefinitionsFor definitions of terms used in these testmethods,see T
7、erminology C904.4.Significance and Use4.1 This test method offers a means of determining theworking time,initial setting time and service strength settingtime of chemically setting chemical-resistant silicate and silicamortars.5.Apparatus5.1 Equipment,capable of weighing materials or specimensto 60.
8、3%accuracy.5.2 Mixing PanA metal or porcelain enameled pan mea-suring approximately 8 by 8 by 2 in.(200 by 200 by 50 mm)deep.5.3 TrowelA bricklayers triangular trowel approximately4 in.(100 mm)in length.5.4 Aluminum Foil DishA flat-bottomed container 214in.(60 mm)in diameter by58in.(16 mm)high.An al
9、uminum foildish for milk analysis is suitable.5.5 Gillmore Needle The Gillmore needle shall conformto the following requirements:Initial NeedleWeight113.4 0.5 gDiameter0.083 0.002 in.Final NeedleWeight453.6 0.5 gDiameter0.042 0.002 in.5.5.1 The needle tips shall be cylindrical for a distance ofabout
10、316in.(4.8 mm).The needle ends shall be plane and atright angles to the axis of the rod and shall be maintained in aclean condition.The Gillmore needles should preferably bemounted as shown in Fig.1.6.Temperature Conditions6.1 All material used in this test method shall be stored forat least 16 h pr
11、ior to use at the standard test temperature of 731This test method is under the jurisdiction of ASTM Committee C03 onChemical-Resistant Nonmetallic Materialsand are the direct responsibility ofSubcommittee C03.01 on Mortars and Carbon Brick.Current edition approved Aug.1,2012.Published September 201
12、2.Originallyapproved in 1958.Last previous edition approved in 2008 as C414 03(2008).DOI:10.1520/C0414-03R12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standard
13、s Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6 4F(23 6 2C).The standard temperature for the working,initial setting,and service strength setting times shall be 73 64F.6.2 The relative humidity
14、 of the surrounding air shall bekept below 80%during mixing of the mortar and conditioningof the specimens.6.3 Other test temperatures are acceptable upon agreementbetween the manufacturer and user,provided that they arereported with the test data.7.Preparation of Mortar7.1 Prepare a 4.4 lb(2000 g)s
15、ample of mortar using theproportionate amounts of powder filler and liquid recom-mended by the manufacturer.If the proportions are specified byvolumes,weigh the volumes and report the correspondingweights.Pour the liquid into the mixing pan and gradually addthe powder filler to the liquid while mixi
16、ng with the trowel.Note and record the time mixing begins.Thoroughly mix themass until a uniform mixture is secured.The total mixing timeshall be in accordance with the manufacturers recommenda-tion.7.2 Fill an aluminum dish and strike off the surface evenlywith a straight-edge spatula.Spread out the remainder of themortar in the mixing pan to a uniform thickness.7.3 Prepare test specimens in accordance with C579 ifservice strength setting time is to be determined.8.Procedure8.1 Working Time Rem
