1、Designation: C 414 03Standard Test Method forWorking, Setting, and Service Strength Setting Times ofChemically Setting Chemical-Resistant Silicate and SilicaMortars1This standard is issued under the fixed designation C 414; the number immediately following the designation indicates the year oforigin
2、al adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Def
3、ense.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.NOTE 1For chemical-resistant resin mortars refer to Test MethodsC 308.1.2 The values stated in inch-p
4、ound units are to be regardedas the standard. The values given in parentheses are forinformation 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 he
5、alth practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C 308 Test Methods for Working, Setting, and ServiceStrength Setting Times of Chemical-Resistant Resin Mor-tarsC 579 Test Method for Compressive Strength of Chemical-Resi
6、stant Mortars, Grouts, Monolithic Surfacings, andPolymer ConcretesC 904 Terminology Relating to Chemical-Resistant Non-Metallic Materials3. Terminology3.1 DefinitionsFor definitions of terms used in these testmethods, see Terminology C 904.4. Significance and Use4.1 This test method offers a means o
7、f 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 60.3 % accuracy.5.2 Mixing PanA metal or porcelain enameled pan mea-suring
8、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 214 in.(60 mm) in diameter by58 in. (16 mm) high. An aluminum foildish for milk analysis is suitable.5.5 Gillmore Ne
9、edleThe Gillmore needle shall conform tothe following requirements:Initial NeedleWeight 113.4 6 0.5 gDiameter 0.083 6 0.002 in.Final NeedleWeight 453.6 6 0.5 gDiameter 0.042 6 0.002 in.5.5.1 The needle tips shall be cylindrical for a distance ofabout316 in. (4.8 mm). The needle ends shall be plane a
10、nd 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 prior to use at the standard test temperature
11、of 736 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 of the surrounding air shall bekept below 80 % during mixing of the mortar and conditioningof the specimens.1This test method is under the juris
12、diction of ASTM Committee C03 onChemical-Resistant Nonmetallic Materials and are the direct responsibility ofSubcommittee C03.01 on Test Methods.Current edition approved October 10, 2003. Published October 2003. Originallyapproved in 1958. Last previous edition approved in 1999 as C 414 99.2For refe
13、renced 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 standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, Wes
14、t Conshohocken, PA 19428-2959, United States.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) sample of mortar using theproportionate amounts of powder f
15、iller 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 mixing with the trowel.Note and record the time mixing begi
16、ns. 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 unif
17、orm thickness.7.3 Prepare test specimens in accordance with C 579 ifservice strength setting time is to be determined.8. Procedure8.1 Working TimeRemove approximately 0.5 oz (15 g)portions of the silicate or silica mortar at 5-min (maximum)intervals and trowel onto a smooth, clean and dry horizontal
18、surface. Before taking the 0.5 oz portions, work the trowelthrough the mix to work in any skin that may have formed onthe surface. Consider the mortar workable if it stays in theapplied position without following the trowel or withoutcurling behind the trowel while spreading. Record the workingtime
19、as the time in minutes from the start of mixing the fillerand binder until the mortar ceases to be workable and fails tostay in the applied position while spreading. Do not return thematerial used for tests to the mixing pan.8.2 Initial Setting TimeTest the specimen in the aluminumdish (see 7.2) for
20、 penetration by the Gillmore needle. Recordthe initial setting time as the time in hours from the start ofmixing the filler and binder until the 1 lb (454 g) GillmoreNeedle, having a tip diameter of124 in. (1.06 mm) penetratesthe sample316 in. (5 mm), the length of the needle tip, in 1 min.NOTE 2In
21、order that sufficient data will be obtained with the sample,it is suggested that tests be made at maximum time intervals of 30 minuntil the needle takes 15 to 30 s for penetration; then the tests can berepeated at more frequent intervals, as the time for penetration nears 60 s.8.3 Service Strength S
22、etting Time, CompressiveIn accor-dance with Test Method C 579, make a minimum of three testspecimens for testing at each time interval; this normallyrequires a minimum of twelve specimens. Test three specimenson the seventh day after preparation in accordance with TestMethod C 579 and continue testi
23、ng every 48 h until the averagecompressive strength of the three test specimens at the respec-tive time interval reaches 90 % of manufacturers publishedcompressive strengths when tested at 73 6 4F. Other testtemperatures are acceptable as agreed upon by the user andmanufacturer. They shall agree on
24、an acceptable time, tempera-ture, and compressive strength percentage criterion for servicestrength setting time as applies to their specific application.9. Report9.1 Report the following information:9.1.1 Manufacturers name of mortar and generic type,9.1.2 Mixing ratio and component weights,9.1.3 T
25、est conditions (temperature and humidity),9.1.4 Working time (minutes),9.1.5 Initial setting time (hours),9.1.6 Manufacturers published compressive strength,9.1.7 Service compressive strength setting time (days).9.1.8 Report the compressive strengths determined at therespective time intervals.9.2 If
26、 test temperatures or other test criteria are differentthan so stated by the test method, then same shall be reported.10. Precision and Bias10.1 Precision and bias for this test method have not beenestablished.10.2 To obtain sufficient results to make a statement ofprecision and bias, repeat Section
27、s 6, 7, and 8 at least threemore times.10.3 Test results that are manifestly faulty or that givevalues differing by more than 15 % from the average value ofall respective results obtained when using the same mortarcomponents and tested at the same temperatures shall not beconsidered in determining t
28、he average working time, initialsetting time, or the service compressive strength setting time.If, after discarding values, there are less than three remainingfor determination of the working time, initial setting time, andthe service compressive strength time, a retest shall be made.11. Keywords11.
29、1 chemical-resistant; mortars; service strength settingtime; setting time; silica mortars; silicate mortars; workingtimeFIG. 1 Gilmore ApparatusC414032ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Use
30、rs 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
31、 five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technic
32、al committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).C414033
