ImageVerifierCode 换一换
格式:PDF , 页数:3 ,大小:69.66KB ,
资源ID:463121      下载积分:10000 积分
快捷下载
登录下载
邮箱/手机:
温馨提示:
如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
如填写123,账号就是123,密码也是123。
特别说明:
请自助下载,系统不会自动发送文件的哦; 如果您已付费,想二次下载,请登录后访问:我的下载记录
支付方式: 支付宝扫码支付 微信扫码支付   
注意:如需开发票,请勿充值!
验证码:   换一换

加入VIP,免费下载
 

温馨提示:由于个人手机设置不同,如果发现不能下载,请复制以下地址【http://www.mydoc123.com/d-463121.html】到电脑端继续下载(重复下载不扣费)。

已注册用户请登录:
账号:
密码:
验证码:   换一换
  忘记密码?
三方登录: 微信登录  

下载须知

1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。
2: 试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。
3: 文件的所有权益归上传用户所有。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 本站仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

版权提示 | 免责声明

本文(ASTM C1038 C1038M-2010 Standard Test Method for Expansion of Hydraulic Cement Mortar Bars Stored in Water《存放在水中的水硬水泥灰浆棒膨胀的标准试验方法》.pdf)为本站会员(registerpick115)主动上传,麦多课文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文库(发送邮件至master@mydoc123.com或直接QQ联系客服),我们立即给予删除!

ASTM C1038 C1038M-2010 Standard Test Method for Expansion of Hydraulic Cement Mortar Bars Stored in Water《存放在水中的水硬水泥灰浆棒膨胀的标准试验方法》.pdf

1、Designation: C1038/C1038M 10Standard Test Method forExpansion of Hydraulic Cement Mortar Bars Stored inWater1This standard is issued under the fixed designation C1038/C1038M; the number immediately following the designation indicates theyear of original adoption or, in the case of revision, the year

2、 of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This test method covers the determination of the expan-sion of mortar bars made using hydraulic cement, of whichs

3、ulfate is an integral part.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may res

4、ult in non-conformancewith the 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-bility of regulatory

5、limitations prior to use. (WarningFreshhydraulic cementitious mixtures are caustic and may causechemical burns to skin and tissue upon prolonged exposure.2)2. Referenced Documents2.1 ASTM Standards:3C109/C109M Test Method for Compressive Strength ofHydraulic Cement Mortars (Using 2-in. or 50-mm Cube

6、Specimens)C305 Practice for Mechanical Mixing of Hydraulic CementPastes and Mortars of Plastic ConsistencyC490 Practice for Use of Apparatus for the Determinationof Length Change of Hardened Cement Paste, Mortar, andConcreteC511 Specification for Mixing Rooms, Moist Cabinets,Moist Rooms, and Water S

7、torage Tanks Used in theTesting of Hydraulic Cements and ConcretesC778 Specification for SandC1005 Specification for Reference Masses and Devices forDetermining Mass and Volume for Use in the PhysicalTesting of Hydraulic CementsC1437 Test Method for Flow of Hydraulic Cement MortarD1193 Specification

8、 for Reagent Water3. Significance and Use3.1 This test method is used to determine the amount ofexpansion of a mortar bar when it is stored in water. Theamount of mortar-bar expansion may relate to the amount ofsulfate in the cement; expansion may become excessive whenthe cement contains too much su

9、lfate.3.2 Some cement specifications limit the amount of sulfatecontained in hydraulic cement by requiring that the amount ofexpansion in water not exceed a specified value.4. Apparatus4.1 Reference Masses and Mass-Determining Devices, con-forming to the requirements of Specification C1005. Evaluate

10、the device for precision and bias at a total load of 2 Kg.4.2 Glass Graduates, Molds, and Length Comparator, con-forming to the requirements of Specification C490.4.3 Moist Cabinet or Room, conforming to the requirementsof Specification C511.4.4 Mixer, Bowl, and Paddle, conforming to the require-men

11、ts of Practice C305.4.5 Trowel and Tamper, conforming to the requirements ofTest Method C109/C109M.5. Temperature and Relative Humidity5.1 Molding Room, Dry Materials, and Mixing WaterMaintain the temperature of the molding room, dry materials,and mixing water at 23.0 6 4.0 C 77.0 6 7.0 F, andmainta

12、in the relative humidity of the molding room at not lessthan 50 %.6. Reagents and Materials6.1 Mixing WaterPotable water is satisfactory for routinetests. For all cooperative tests and in case of dispute, usereagent water conforming to the numerical limits of Type III ofSpecification D1193.1This tes

13、t method is under the jurisdiction of ASTM Committee C01 on Cementand is the direct responsibility of Subcommittee C01.28 on Sulfate Content.Current edition approved June 15, 2010. Published July 2010. Originallyapproved in 1985. Last previous edition approved in 2004 as C103804. DOI:10.1520/C1038_C

14、1038M-10.2Section on Safety, Manual of Cement Testing, Annual Book of Standards, Vol.04.01.3For 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 standards Document Su

15、mmary page onthe ASTM website.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6.2 Graded SandSand for making the test specimens shallconform to the requirements for gr

16、aded standard sand inSpecification C778.7. Procedure7.1 Number and Dimensions of Test SpecimensMake four25 by 25 by 285-mm 1 by 1 by 1114-in. test specimens foreach cement. The effective gage length of these specimens is250 mm 10 in.NOTE 1In routine tests, 25 by 25 by 160-mm 1 by 1 by 614-in.specime

17、ns may be used; however, in case of dispute, results obtained with25 by 25 by 285-mm 1 by 1 by 1114-in. specimens shall govern. Theeffective gage length of this specimen is 125 mm 5 in.7.2 Specimen MoldsPrepare the specimen molds in accor-dance with the requirements of Specification C490, exceptcove

18、r the interior surfaces of the mold with a release agent. Arelease agent will be acceptable if it serves as a parting agentwithout affecting the setting of the cement and without leavingany residue which will reduce the penetration of water into thespecimen.NOTE 2TFE-fluorocarbon tape complies with

19、the requirements for amold release agent.7.3 Proportioning, Consistency, and Mixing of Mortar:7.3.1 The quantity of dry materials required to prepare four25 by 25 by 285-mm 1 by 1 by 1114-in. specimens is 500 gof cement and 1375 g of graded sand. Use an amount of mixingwater that produces a flow of

20、110 6 5 as determined by theflow table after 25 drops in 15 s as described in Test MethodC1437. Record the amount of water used to the nearestmillilitre.7.3.2 Mix the mortar in accordance with the proceduredescribed in Practice C305.7.4 Molding Test SpecimensImmediately upon comple-tion of mixing, r

21、emove the paddle and the bowl from the mixerand shake the excess mortar from the paddle into the bowl. Fillthe mold in two layers, compacting each layer with the tamper.Work the mortar into the corners, around the gage studs, andalong the surfaces of the mold with the tamper until ahomogeneous speci

22、men is obtained. After the top layer hasbeen compacted, cut the mortar off flush with the top of themold and smooth the surface with a few strokes of the trowel.8. Storage of Test Specimens8.1 Initial StorageImmediately upon completion of mold-ing, place the test specimens in the moist cabinet or mo

23、istroom. Keep all test specimens in the molds in the moist cabinetor moist room for 22.5 6 0.5 h with upper surfaces exposed tothe moist air but protected from dripping water. After this time,remove the specimens from the molds, properly identify, andplace in water or saturated lime water maintained

24、 at 23.0 6 2.0C 77 6 4 F for at least 30 min prior to making the initialmeasurement.8.2 Subsequent StorageAfter the initial measurement,store the test specimens in saturated lime water in a tank in themoist cabinet or moist room. Cover the specimens with at least5-mm 14-in. of water during storage.

25、Keep the storage waterclean by changing as necessary. Use a tank and lime waterconforming to the requirements of Specification C511.9. Length Change Measurement9.1 Remove the specimens from water storage, one at atime, and wipe only the gage studs with a damp cloth beforemeasuring. Make length-compa

26、rator readings. The effectivegage length of specimens is 250 mm 10 in. for the standardmold size.9.2 Make the first reading at the age of 24 h 6 15 min fromthe time the cement and water are mixed together. Makeadditional length-comparator readings at the age of 14 days.NOTE 3Additional information o

27、f value may be obtained by makinglength-comparator readings of the specimens at ages earlier and later than14 days.10. Calculation and Report10.1 Calculate the change in length of the specimen at 24 hand at 14 days to the nearest 0.001 % of the effective gagelength and report as the expansion of the

28、 specimen at thatperiod. Report the average length of change of the fourspecimens to the nearest 0.001 %.11. Precision and Bias11.1 PrecisionThe following precision statements are ap-plicable when replicate samples are made using the sameportland cement at fixed water content.11.1.1 The single-opera

29、tor standard deviation has beenfound to be 0.00165 % for expansions between 0.0075 and0.011 %. Therefore, results of two properly conducted tests bythe same operator on the same material should not differ fromeach other by more than 0.005 %.11.1.2 The multi-laboratory standard deviation has beenfoun

30、d to be 0.00287 % for expansions between 0.0075 and0.0115 %. Therefore, results of two properly conducted tests onthe same material in two different laboratories should not differfrom each by more than 0.008 %.11.2 BiasSince there is no accepted reference materialsuitable for determining the bias fo

31、r the procedure in TestMethod C1038 for measuring the expansion of the bar speci-mens, no statement on bias is being made.12. Keywords12.1 hydraulic cement; mortar-bar expansion; sulfate; sul-fate contentC1038/C1038M 102SUMMARY OF CHANGESCommittee C01 has identified the location of selected changes

32、to this standard since the last issue, C103804,that may impact the use of this standard. (Approved June 15, 2010.)(1) The standard was revised as a dual units test method.(2) The fresh hydraulic cement caveat was moved to 1.3 onsafety.ASTM International takes no position respecting the validity of a

33、ny 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 re

34、vision 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 either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. You

35、r 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 hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copy

36、righted 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).C1038/C1038M 103

copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
备案/许可证编号:苏ICP备17064731号-1