ASTM C308-2000(2012)e1 Standard Test Methods for Working Initial Setting and Service Strength Setting Times of Chemical-Resistant Resin Mortars《耐化学侵蚀树脂灰浆施工时间、初凝时间及维护凝固强度时间的标准试验方法.pdf

《ASTM C308-2000(2012)e1 Standard Test Methods for Working Initial Setting and Service Strength Setting Times of Chemical-Resistant Resin Mortars《耐化学侵蚀树脂灰浆施工时间、初凝时间及维护凝固强度时间的标准试验方法.pdf》由会员分享，可在线阅读，更多相关《ASTM C308-2000(2012)e1 Standard Test Methods for Working Initial Setting and Service Strength Setting Times of Chemical-Resistant Resin Mortars《耐化学侵蚀树脂灰浆施工时间、初凝时间及维护凝固强度时间的标准试验方法.pdf（3页珍藏版）》请在麦多课文档分享上搜索。

1、Designation: C308 00 (Reapproved 2012)1Standard Test Methods forWorking, Initial Setting, and Service Strength Setting Timesof Chemical-Resistant Resin Mortars1This standard is issued under the fixed designation C308; the number immediately following the designation indicates the year oforiginal ado

2、ption 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.1NOTEUnits information was corrected editorially in September 2012.1. Scope1.1 Thes

3、e test methods cover the determination of theworking, initial setting, and service strength setting times ofchemical-resistant resin mortars.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provi

4、ded 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 theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bilit

5、y of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C279 Specification for Chemical-Resistant Masonry UnitsC307 Test Method for Tensile Strength of Chemical-Resistant Mortar, Grouts, and Monolithic SurfacingsC904 Terminology Relating to Chemical-Resistant Nonme-tallic

6、 Materials3. Terminology3.1 DefinitionsFor definitions of terms used in these testmethods, see Terminology C904.4. Significance and Use4.1 These test methods offer a means of determining theworking time, initial setting time and service strength settingtime of chemical-resistant resin mortars. The r

7、esults obtainedshould serve as a guide in, but not as the sole basis for,selection of a chemical-resistant mortar for a particular appli-cation.5. Apparatus5.1 Weighing EquipmentShall be capable of weighingmaterials or specimens to 60.3 % accuracy.5.2 Mixing Equipment:5.2.1 Porcelain Enameled PanMea

8、suring approximately10 in. long by 16 in. wide by 2 in. deep (250 mm by 400 mmby 50 mm).5.2.2 Bricklayers Triangular Trowel Approximately 4 in.(100 mm) in length.5.3 BricksAs per Specification C279, Type III.5.4 Vicat Apparatus The Vicat apparatus shall consist of aframe, A (see Fig. 1), bearing a m

9、ovable rod, B, weighing 300g, one end, C, the plunger end, being 10 mm in diameter for adistance of at least 50 mm and the other end having aremovable steel needle, D, for initial setting timedetermination, 1 mm in diameter and 50 mm in length. The rod,B, is reversible, and can be held in any desire

10、d position by a setscrew, E, and has an adjustable indicator, F, which moves overa scale (graduated in millimetres) attached to the frame, A. Inaddition to the above, the Vicat apparatus shall conform to thefollowing requirements:5.4.1 Weight of Plunger300 6 0.5 g.5.4.2 Diameter of Larger End of Plu

11、nger 10 6 0.05 mm.5.4.3 Diameter of Needle1 6 0.05 mm.5.4.4 Graduated Scale The graduated scale, when com-pared with a standard scale accurate to within 0.1 mm at allpoints, shall not show a deviation at any point greater than 0.25mm.6. Temperature6.1 All materials used in this method shall be store

12、d for atleast 16 h prior to use at the standard test temperature of 73 64F (23 6 2C). The standard temperature for the working andinitial setting time tests shall be 73 6 4F (23 6 2C). Other1These test methods are under the jurisdiction of Committee C03on Mortars andCarbon Brick.Current edition appr

13、oved Aug. 1, 2012. Published September 2012. Originallyapproved in 1953. Last previous edition approved in 2005 as C30805. DOI:10.1520/C0308-00R12E01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStand

14、ards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1test temperatures are acceptable upon agreement between themanufacturer and user provided that th

15、ey are reported with thetest data.7. Preparation of Mortar7.1 Prepare a 1000-g sample of mortar, using proportionateamounts of filler and liquid as recommended by the manufac-turer. If the proportions specified are by volume, weigh thematerials and report the corresponding proportions by weight.Pour

16、 an appropriate amount of liquid into the pan, graduallyadd the powder to the liquid resin, and mix thoroughly with thetrowel until a uniform mixture is obtained (this shall becomplete within 3 min). Continue the mixing operation for 1min after an apparently uniform mixture is obtained. Spreadout th

17、e mortar in a layer of uniform thickness covering theentire surface of the mixing pan.7.2 For a multicomponent resin mortar, the procedure de-scribed in 7.1 may be modified slightly to permit the additionof the catalyst to the mortar within the specified time limit.8. Working Time8.1 Remove approxim

18、ately 25-g portions of the resin mortarat specific intervals and trowel on the horizontal surface ofclean, dry freezer paper. In order that sufficient data will beobtained with the minimum quantity of material, it is recom-mended that the testing be done every 5 min until the materialbegins to curl

19、behind the trowel. The sample shall be removedfrom a portion of the mortar located at least 2 in. (50 mm) fromthe side of the pan. The material used for tests shall not bereturned to the mixing pan. The working time shall be recordedas the longest time (in minutes) at which the mortar does notcurl b

20、ehind the trowel.9. Initial Setting Time9.1 Immediately after mixing is complete, remove andbutter a sufficient amount of the mortar on the sides of twoclean, dry bricks to provide a14 in. (6 mm) joint. The bricksshould be laid on freezer paper and the buttered sides pushedtogether to form a joint a

21、pproximately14 in. (6 mm) wide. Careshould be taken to eliminate voids when pushing the brickstogether. It is advantageous to establish the joint thickness byinserting a dowel rod near each end of the joint. Strike off anyexcess material above the joint by use of the trowel.9.2 Examine the joint qua

22、litatively, at 1-h intervals, with thepoint of the trowel until indentation becomes difficult. Con-tinue the test with the Vicat needle (at 20 to 30-min intervals)until the indentation of the needle during a 10-min period isless than 1 mm. Record the initial setting time as the timeinterval in hours

23、 at which the indentation of the Vicat needle isless than 1 mm.10. Service Strength Setting Time10.1 Make a minimum of three tension test specimens fortesting at each time interval. This normally requires 12 or morespecimens. Prepare tension specimens in accordance with TestMethod C307. Make the fir

24、st test 24 h after the initial mixingtime and continue every 48 h until 90 % of the manufacturerspublished value for tensile strength is reached.NOTE 1Ring, G, and plate, H, are not required for this test.FIG. 1 Vicat ApparatusC308 00 (2012)1210.2 Record the service strength setting time as the time

25、 indays between initial mixing of the component parts at aspecified temperature and the time at which the mortar hasacquired at least 90 % of the manufacturers published valuefor tensile strength.11. Report11.1 The report shall include the following:11.1.1 Identification of mortar tested,11.1.2 Work

26、ing time,11.1.3 Initial setting time,11.1.4 Service strength setting time,11.1.5 Number of specimens tested, and11.1.6 Any variation from the standard procedure.12. Precision and Bias12.1 A statement of precision and bias will be added at alater date.13. Keywords13.1 chemical-resistant mortars; serv

27、ice strength settingtime; initial setting time; working timeASTM 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 pa

28、tent 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 andif not revised, either reapproved or withdrawn. Your comments are invited ei

29、ther 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 technical committee, which you may attend. If you feel that your comments have not received a fair

30、 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 stan

31、dard 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).C308 00 (2012)13