ImageVerifierCode 换一换
格式:PDF , 页数:2 ,大小:59.54KB ,
资源ID:463765      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-463765.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 C121 C121M-2009e1 Standard Test Method for Water Absorption of Slate《石板吸水性的标准试验方法》.pdf)为本站会员(syndromehi216)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 C121 C121M-2009e1 Standard Test Method for Water Absorption of Slate《石板吸水性的标准试验方法》.pdf

1、Designation: C121/C121M 091Standard Test Method forWater Absorption of Slate1This standard is issued under the fixed designation C121/C121M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A number in par

2、entheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1NOTEIn 8.3, the first SI value in brackets was corrected from 0 to 20 editoria

3、lly in May 2011.INTRODUCTIONIt is often desirable to gain some idea of the porosity of a material in question.Actual determinationsof the pore space require the use of rather elaborate and refined equipment as well as considerableprecision in carrying out the tests. For comparative purposes the abso

4、rption test affords a simple andsufficiently accurate means of obtaining the desired information. As applied to slate this test requiressomewhat more care and precision than many other materials because of its dense nature and,consequently, the small quantities to be dealt with. Furthermore, the cle

5、avage of slatethat propertywhich permits it to be split into thin sheets of uniform thicknessmust be taken into considerationwhen this test is made. On this account misleading results are often obtained on cubical specimens dueto accidental cleavage cracks in the specimens. The shapes of specimens a

6、nd larger number ofspecimens recommended in the following procedure are intended to eliminate to a large extent theinconsistent results which may be obtained on this material.1. Scope1.1 This test method covers the determination of the waterabsorption of slate.1.2 UnitsThe values stated in either SI

7、 units or inch-pound units are to be regarded separately as standard. Thevalues stated in each system may not be exact equivalents;therefore, each system shall be used independently of the other.Combining values from the two systems may result in non-conformance with the standard.1.3 This standard d

8、oes not purport to address the safetyconcerns, if any, associated with its use. It is the responsibilityof the user of this standard to consult and establish appropriatesafety and health practices and determine the applicability ofregulatory limitations prior to use.2. Referenced Documents2.1 ASTM S

9、tandards:2C119 Terminology Relating to Dimension Stone3. Terminology3.1 DefinitionsAll definitions are in accordance with Ter-minology C119.4. Significance and Use4.1 This test method is useful in indicating the differences inwater absorption of slates. This test method also provides oneelement in t

10、he comparison of slates.5. Test Specimens5.1 The test specimens shall consist of square or rectangularslabs from316 to516 in. 5 to 8 mm in thickness and not lessthan 4 in. 100 mm on any side.5.2 Not less than six specimens shall be prepared from eachsample of slate, the sample being considered as an

11、y number ofpieces selected to represent a definite part or grade of thedeposit.6. Sampling6.1 Select the sample to represent a true average of the typeor grade of stone under consideration and of the qualitysupplied to the market under the type designation to be tested.The sample may be selected by

12、the purchaser or his authorizedrepresentative from the quarried stone or taken from the naturalledge and shall be of adequate size to permit the preparation ofthe desired number of test specimens. When perceptible1This test method is under the jurisdiction of ASTM Committee C18 onDimension Stone and

13、 is the direct responsibility of Subcommittee C18.01 on TestMethods.Current edition approved April 1, 2009. Published April 2009. Originallyapproved in 1925 as C12125T. Last previous edition approved in 2006 asC12106. DOI: 10.1520/C0121_C0121M-09E01.2For referenced ASTM standards, visit the ASTM web

14、site, 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, West Conshohocken, PA 19428-2959, United Sta

15、tes.variations occur, the purchaser may select as many samples asare necessary for determining the variations in water absorp-tion of slate.7. Preparation of Specimens7.1 Split the slate to the required thickness and saw to size.When the specimens are prepared from shingles no saw cutshall be nearer

16、 than 1 in. 25 mm to the sheared edge of theshingle.7.2 Free the specimens from loose particles by scrubbingwith a fiber brush and clean water.8. Procedure, Preferred Method8.1 Dry the specimens for 48 h in a ventilated oven at atemperature of 140 6 4F 60 6 2C. At the 46th, 47th, and48th hour, weigh

17、 the specimens to ensure that the weight is thesame. If the weight continues to drop, continue to dry thespecimens until there are three successive hourly readings withthe same weight.8.2 After drying, cool the specimens in the room for 15 minand then weigh. When the specimens cannot be weighedimmed

18、iately after cooling, place them in a desiccator. Deter-mine the weight to the nearest 0.0005 oz 0.01 g.8.3 Entirely immerse the specimens in filtered or distilledwater at approximately 68 6 9F 20 6 5C for 48 h, removeone at a time, wipe the surface dry with a slightly damp,absorbent towel (Note 1)

19、and immediately weigh each speci-men to the nearest 0.0005 oz 0.01 g.NOTE 1The operator should distinguish between a damp towel and awet one. In starting the operation, the towel should be sprinkled lightly.When the surface of the specimen is properly wiped off, it should appeardry.9. Procedure, Alt

20、ernative Method9.1 Occasionally it is desirable to obtain results in a shorterperiod than that required by the procedure described in Section8. In such cases, the 48 h immersion period may be supplantedby an 8 h boiling period (Note 2). In this alternative method theoperations shall be the same as d

21、escribed in Section 8 up to thatof immersion. Instead of allowing the specimens to soak for 48h place them in an enameled pan or other suitable vessel, coverwith water, and boil for 8 h. Before the final weighing, cool thespecimens by allowing tap water to flow over them for at least30 min.NOTE 2Boi

22、ling for 8 h has been found to give practically the samesaturation as immersion for 48 h.10. Calculation and Report10.1 Calculate the percentage of absorption as follows:Absorption, % 5 W22 W1!/W1# 3 100 (1)where:W1= weight of the dried specimen, oz g, andW2= weight of the specimen after immersion,

23、oz g.10.2 Report the average of all the tests as the absorption ofslate. All the determinations shall be reported as information.10.3 The following additional information shall also bereported: identification of the sample, including name andlocation of the quarry, name and position of the ledge, da

24、tewhen sample was taken, and trade name or grade of the slate.11. Precision and Bias11.1 Individual variations in a natural product may result indeviation from accepted values. A precision section will beadded when sufficient data are available to indicate acceptabletolerances in repeatability and r

25、eproducibility.12. Keywords12.1 dimension stone; slate; test; water absorptionASTM 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 valid

26、ity 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 andif not revised, either reapproved or withdrawn. Your comme

27、nts 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 technical committee, which you may attend. If you feel that your comments have n

28、ot 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 co

29、pies) 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/).C121/C121M 0912

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