1、Designation: C109/C109M 11bC109/C109M 12Standard Test Method forCompressive Strength of Hydraulic Cement Mortars (Using2-in. or 50-mm Cube Specimens)1This standard is issued under the fixed designation C109/C109M; the number immediately following the designation indicates the yearof original adoptio
2、n or, in the case of revision, the year of last revision. A number in parentheses 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.1. Sco
3、pe*1.1 This test method covers determination of the compressive strength of hydraulic cement mortars, using 2-in. or 50-mm cubespecimens.NOTE 1Test Method C349 provides an alternative procedure for this determination (not to be used for acceptance tests).1.2 This test method covers the application o
4、f the test using either inch-pound or SI units. The values stated in either SI unitsor inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values statedin each system may not be exact equivalents; therefore, each system shall be used i
5、ndependently of the other. Combining valuesfrom the two systems may result in nonconformance with the standard.1.3 Values in SI units shall be obtained by measurement in SI units or by appropriate conversion, using the Rules for Conversionand Rounding given in Standard IEEE/ASTM SI-10, of measuremen
6、ts made in other units.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior t
7、o use. (WarningFresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin andtissue upon prolonged exposure.2)2. Referenced Documents2.1 ASTM Standards:3C91 Specification for Masonry CementC114 Test Methods for Chemical Analysis of Hydraulic CementC150 Specification for P
8、ortland CementC230/C230M Specification for Flow Table for Use in Tests of Hydraulic CementC305 Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic ConsistencyC349 Test Method for Compressive Strength of Hydraulic-Cement Mortars (Using Portions of Prisms Broken in Flexure
9、)C511 Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of HydraulicCements and ConcretesC595 Specification for Blended Hydraulic CementsC618 Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in ConcreteC670 Practice fo
10、r Preparing Precision and Bias Statements for Test Methods for Construction MaterialsC778 Specification for SandC989 Specification for Slag Cement for Use in Concrete and MortarsC1005 Specification for Reference Masses and Devices for Determining Mass and Volume for Use in the Physical Testing ofHyd
11、raulic CementsC1157 Performance Specification for Hydraulic CementC1328 Specification for Plastic (Stucco) Cement1 This test method is under the jurisdiction of ASTM Committee C01 on Cement and is the direct responsibility of Subcommittee C01.27 on Strength.Current edition approved Dec. 1, 2011Dec.
12、15, 2012. Published March 2012January 2013. Originally approved in 1934. Last previous edition approved in 2011 asC109/C109M 11a.C109/C109M 11b.DOI:10.1520/C0109_C0109M-11B.10.1520/C0109_C0109M-12.2 See the section on Safety, Manual of Cement Testing, Annual Book of ASTM Standards, Vol 04.01.3 For r
13、eferencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at 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 provid
14、e the user of an ASTM standard an indication of what changes have been made to the previous version. 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 st
15、andard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1C1329 Specification for Mortar CementC1437 Test Met
16、hod for Flow of Hydraulic Cement MortarE4 Practices for Force Verification of Testing MachinesIEEE/ASTM SI-10 Standard for Use of the International System of Units (SI): The Modern Metric System3. Summary of Test Method3.1 The mortar used consists of 1 part cement and 2.75 parts of sand proportioned
17、 by mass. Portland or air-entraining portlandcements are mixed at specified water/cement ratios. Water content for other cements is that sufficient to obtain a flow of 110 65 in 25 drops of the flow table. Two-inch or 50-mm test cubes are compacted by tamping in two layers. The cubes are cured oneda
18、y in the molds and stripped and immersed in lime water until tested.4. Significance and Use4.1 This test method provides a means of determining the compressive strength of hydraulic cement and other mortars andresults may be used to determine compliance with specifications. Further, this test method
19、 is referenced by numerous otherspecifications and test methods. Caution must be exercised in using the results of this test method to predict the strength ofconcretes.5. Apparatus5.1 Weights and Weighing Devices, shall conform to the requirements of Specification C1005. The weighing device shall be
20、evaluated for precision and accuracy at a total load of 2000 g.5.2 Glass Graduates, of suitable capacities (preferably large enough to measure the mixing water in a single operation) todeliver the indicated volume at 20 C. The permissible variation shall be 62 mL. These graduates shall be subdivided
21、 to at least5 mL, except that the graduation lines may be omitted for the lowest 10 mL for a 250-mL graduate and for the lowest 25 mL ofa 500-mL graduate. The main graduation lines shall be circles and shall be numbered. The least graduations shall extend at leastone seventh of the way around, and i
22、ntermediate graduations shall extend at least one fifth of the way around.5.3 Specimen Molds, for the 2-in. or 50-mm cube specimens shall be tight fitting. The molds shall have not more than threecube compartments and shall be separable into not more than two parts. The parts of the molds when assem
23、bled shall be positivelyheld together. The molds shall be made of hard metal not attacked by the cement mortar. For new molds the Rockwell hardnessnumber of the metal shall be not less than 55 HRB. The sides of the molds shall be sufficiently rigid to prevent spreading orwarping. The interior faces
24、of the molds shall be plane surfaces and shall conform to the tolerances of Table 1.5.3.1 Cube molds shall be checked for conformance to the design and dimensional requirements of this test method at leastevery 2 years.5.4 Mixer, Bowl and Paddle, an electrically driven mechanical mixer of the type e
25、quipped with paddle and mixing bowl, asspecified in Practice C305.5.5 Flow Table and Flow Mold, conforming to the requirements of Specification C230/C230M.5.6 Tamper, a nonabsorptive, nonabrasive, nonbrittle material such as a rubber compound having a ShoreAdurometer hardnessof 80 6 10 or seasoned o
26、ak wood rendered nonabsorptive by immersion for 15 min in paraffin at approximately 392 F or 200C, shall have a cross section of about 12 by 1 in. or 13 by 25 mm and a convenient length of about 5 to 6 in. or 120 to 150mm. The tamping face shall be flat and at right angles to the length of the tampe
27、r.5.6.1 Tampers shall be checked for conformance to the design and dimensional requirements of this test method at least every2 years.5.7 Trowel, having a steel blade 4 to 6 in. 100 to 150 mm in length, with straight edges.5.8 Moist Cabinet or Room, conforming to the requirements of Specification C5
28、11.TABLE 1 Permissible Variations of Specimen Molds2-in. Cube Molds 50-mm Cube MoldsParameter New In Use New In UsePlaneness of sides ,1,1)9 orequivalent, or use statistical tables to find the confidence ina one-tailed, paired-value t-test on the set of round errors.C109/C109M 1212SUMMARY OF CHANGES
29、Committee C01 has identified the location of selected changes to this standard since the last issue(C109/C109M 11aC109/C109M 11b) that may impact the use of this standard. (Approved Dec. 1, 2011Dec.15, 2012)(1) Revised Table 2 for portland cements at constant water-cement ratio.(2) Added Note 12.(1)
30、 Added research report information Revisions were made to 14.1 and 14.2.ASTM 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
31、 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 comments are
32、 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 not rece
33、ived 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) o
34、f 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/).NOTE 1The qualification method fails for bias if (1) the MREr exceedsthe MAREr, % limit; or if (2) the GRE, % exceeds the MGREg limit andthe CL, % exceeds 95 %.C109/C109M 1213
