ASTM C188-2017 Standard Test Method for Density of Hydraulic Cement《液压水泥密度的标准试验方法》.pdf
《ASTM C188-2017 Standard Test Method for Density of Hydraulic Cement《液压水泥密度的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM C188-2017 Standard Test Method for Density of Hydraulic Cement《液压水泥密度的标准试验方法》.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: C188 16C188 17 American Association StateHighway and Transportation Officials StandardAASHTO No.: T133Standard Test Method forDensity of Hydraulic Cement1This standard is issued under the fixed designation C188; the number immediately following the designation indicates the year oforigi
2、nal 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 o
3、f Defense.1. Scope*1.1 This test method covers the determination of the density of hydraulic cement. Its particular usefulness is in connection withthe design and control of concrete mixtures.1.2 The density of hydraulic cement is defined as the mass of a unit volume of the solids.1.3 The values sta
4、ted in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.4 WarningFresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue uponprolonged exposure.21.5 This standard does not purport to address all of the sa
5、fety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine theapplicability of regulatory limitations prior to use.1.6 This international standard was developed i
6、n accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1
7、ASTM Standards:3C114 Test Methods for Chemical Analysis of Hydraulic CementC125 Terminology Relating to Concrete and Concrete AggregatesC219 Terminology Relating to Hydraulic CementC604 Test Method for True Specific Gravity of Refractory Materials by Gas-Comparison PycnometerC670 Practice for Prepar
8、ing Precision and Bias Statements for Test Methods for Construction MaterialsD2638 Test Method for Real Density of Calcined Petroleum Coke by Helium Pycnometer3. Terminology3.1 DefinitionsDefinitions: For definitions of terms used in this test method, refer to Terminology C125.3.1.1 For definitions
9、of terms used in this test method, refer to Terminology C125 and C219.4. Significance and Use4.1 This test method provides a procedure for the determination of density of hydraulic cement samples using non-instrumentaltechniques.5. Apparatus5.1 Le Chatelier flaskThe standard flask, which is circular
10、 in cross section, with shape and dimensions conforming essentiallyto Fig. 1 (Note). The requirements in regard to tolerance, inscription and length, spacing, and uniformity of graduation will berigidly observed. There shall be a space of at least 10 mm between the highest graduation mark and the lo
11、west point of grindingfor the glass stopper.1 This test method is under the jurisdiction of ASTM Committee C01 on Cement and is the direct responsibility of Subcommittee C01.25 on Fineness.Current edition approved Dec. 15, 2016Dec. 1, 2017. Published December 2016December 2017. Originally approved i
12、n 1944. Last previous edition approved in 20152016as C188C188 16. 15. DOI: 10.1520/C0188-16.10.1520/C0188-17.2 Section on Safety, Manual of Cement Testing, Annual Book of ASTM Standards, Vol. 04.01.3 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service a
13、t serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous ver
14、sion. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes sec
15、tion appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15.1.1 The material of construction shall be excellent quality glass, transparent and free of striae. The glass shall be chemicallyresistant and sh
16、all have small thermal hysteresis. The flasks shall be thoroughly annealed before being graduated. They shall beof sufficient thickness to ensure reasonable resistance to breakage.5.1.2 The neck shall be graduated from 0 to 1 mL and from 18 to 24 mL in 0.1-mL graduations. The error of any indicatedc
17、apacity shall not be greater than 0.05 mL.5.1.3 Each flask shall bear a permanent identification number and the stopper, if not interchangeably ground, shall bear the samenumber. Interchangeable ground-glass parts shall be marked on both members with the standard-taper symbol, followed by the sizede
18、signation. The standard temperature shall be indicated, and the unit of capacity shall be shown by the letters “mL” placed abovethe highest graduation mark.5.2 Kerosine, free of water, or naphtha, having a density greater than 0.73 g/mL at 23 6 2C shall be used in the densitydetermination.5.3 The us
19、e of alternative equipment or methods for determining density is permitted provided that a single operator can obtainresults within 60.03 g/cm3 of the results obtained using the flask method.NOTE 1The design is intended to ensure complete drainage of the flask when emptied, and stability of standing
20、 on a level surface, as well as accuracyand precision of reading.5.3.1 The following alternative methods using helium for density determination are permitted:5.3.1.1 The methodology as described in Test Method C604. Sections of the standard relating to grinding the sample shall beomitted because cem
21、ent is already a powder.5.3.1.2 The methodology as described in Test Method D2638. Sections of the standard relating to grinding the sample shall beomitted because cement is already a powder.6. Procedure6.1 Determine the density of cement on the material as received, unless otherwise specified. If t
22、he density determination on aloss-free sample is required, first ignite the sample as described in the loss on ignition section on Portland Cement of Test MethodsC114.6.2 Fill the flask (Note 2) with either of the liquids specified in 5.2 to a point on the stem between the 0 and the 1-mL mark.Dry th
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ASTMC1882017STANDARDTESTMETHODFORDENSITYOFHYDRAULICCEMENT 液压 水泥 密度 标准 试验 方法 PDF

链接地址:http://www.mydoc123.com/p-465961.html