ASTM C1610 C1610M-2017 Standard Test Method for Static Segregation of Self-Consolidating Concrete Using Column Technique《利用单柱技术对自密实混凝土进行静态分离的标准试验方法》.pdf

《ASTM C1610 C1610M-2017 Standard Test Method for Static Segregation of Self-Consolidating Concrete Using Column Technique《利用单柱技术对自密实混凝土进行静态分离的标准试验方法》.pdf》由会员分享，可在线阅读，更多相关《ASTM C1610 C1610M-2017 Standard Test Method for Static Segregation of Self-Consolidating Concrete Using Column Technique《利用单柱技术对自密实混凝土进行静态分离的标准试验方法》.pdf（5页珍藏版）》请在麦多课文档分享上搜索。

1、Designation: C1610/C1610M 14C1610/C1610M 17Standard Test Method forStatic Segregation of Self-Consolidating Concrete UsingColumn Technique1This standard is issued under the fixed designation C1610/C1610M; the number immediately following the designation indicates theyear of original adoption or, in

2、the case of revision, the year 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 static segregation of self-consolidati

3、ng concrete (SCC) by measuring the coarseaggregate content in the top and bottom portions of a cylindrical specimen (or column).1.2 This test method is not applicable to self-consolidating concrete containing lightweight aggregate.1.3 The values stated in either SI units or inch-pound units are to b

4、e regarded separately as standard. The values stated in eachsystem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the standard.1.4 The text of this standard references notes and fo

5、otnotes that provide explanatory material. These notes and footnotes(excluding those in tables and figures) shall not be considered as requirements of the standard.1.5 This test method is applicable under laboratory and field conditions.1.6 This standard does not purport to address all of the safety

6、 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 to use. (WarningFresh hydraulic cementitious mixtures are caustic and may cause chemica

7、l burns to skin andtissue upon prolonged exposure.2)1.7 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby t

8、he World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:3C125 Terminology Relating to Concrete and Concrete AggregatesC127 Test Method for Relative Density (Specific Gravity) and Absorption of Coarse AggregateC173/C173M Test Method for Air Co

9、ntent of Freshly Mixed Concrete by the Volumetric MethodC192/C192M Practice for Making and Curing Concrete Test Specimens in the LaboratoryC231 Test Method for Air Content of Freshly Mixed Concrete by the Pressure MethodC1712 Test Method for Rapid Assessment of Static Segregation Resistance of Self-

10、Consolidating Concrete Using PenetrationTestC1758/C1758M Practice for Fabricating Test Specimens with Self-Consolidating ConcreteD1785 Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 1203. Terminology3.1 Definitions:3.1.1 For definitions of terms used in this test me

11、thod, refer to Terminology C125.3.2 Definitions of Terms Specific to This Standard:1 This test method is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C09.47 onSelf-Consolidating Concrete.Current edition approved Apr

12、il 1, 2014June 15, 2017. Published May 2014July 2017. Originally approved in 2006. Last previous edition approved in 20102014 asC1610/C1610M 10.14. DOI: 10.1520/C1610_C1610M-14.10.1520/C1610_C1610M-17.2 Section on Safety Precautions, Manual of Aggregate and Concrete Testing, Annual Book of ASTM Stan

13、dards, Vol 04.02.3 For referencedASTM 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

14、 intended only to provide 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

15、current versionof the standard 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 States13.2.1 Static Segregation,st

16、atic segregation, nsettlement of coarse aggregate particles in an undisturbed mass of fresh concrete.4. Summary of Test Method4.1 A sample of freshly-mixed self-consolidating concrete is placed in a cylindrical mold without tamping or vibration. Themold is separated into three sections representing

17、different levels of the cylindrical specimen (or column). Portions of concreteSCCfrom the top and bottom section are washed on a 4.75 mm (No. 4) sieve, leaving the coarse aggregate on the sieve. The massesof coarse aggregate in the top and the bottom sections are determined and the percent static se

18、gregation is calculated.5. Significance and Use5.1 This test method provides users with a procedure to determine the potential static segregation of self-consolidating concrete.NOTE 1This test method may not be sufficiently rapid to evaluate self-consolidating concrete mixtures in the field before p

19、lacement. Test MethodC1712 provides a rapid method for assessing static segregation resistance of self-consolidating concrete.5.2 This test method shall be used to develop self-consolidating concrete mixtures with segregation not exceeding specifiedlimits. Self-consolidating concrete is a fluid conc

20、rete that can be prone to segregation if not proportioned to be cohesive.Acohesiveself-consolidating concrete is important for all applications but is especially critical for deep-section applications such as walls orcolumns. Therefore, the degree of segregation can indicate if a mixture is suitable

21、 for the application.NOTE 2Some level of segregation is tolerable as long as the desired strength and durability performance is achieved.6. Apparatus6.1 Balanceas described in Test Method C127.6.2 Column MoldThe column portion of the mold shall be poly(vinyl chloride) (PVC) plastic pipe Schedule 40

22、meeting therequirements of Specification D1785. The column shall be 200 mm 8 in. in nominal diameter by 660 mm 26 in. in height andseparated into 3 sections. The top section shall be 165 mm 6.5 in. in height, the middle section 330 mm 13 in. in height, andthe bottom section 165 mm 6.5 in. in height,

23、 as shown in Fig. 1. Each section shall have its ends flat and plane and be markedas “Top”, “ Middle”, or “Bottom” relative to its location in the column. Couplers, brackets, clamps, or other equivalent fasteningsystems shall be used for securing the column sections together to form a mortar-tight j

24、oint and to secure the column to the baseplate. The column mold shall be securely attached to a non-absorbent, rigid base plate measuring at least 300 mm 12 in. by 300mm 12 in. square.NOTE 3Experience has shown that a base plate made from sealed or laminated plywood at least 20 mm 0.75 in. thick is

25、suitable for securing thecolumn.6.3 Collector PlateThe collector plate, used to obtain concreteSCC from the top section of the column, shall be made of anynonabsorbent, rigid material measuring at least 510 mm. 20 in by 510 mm 20 in. square. The plate shall contain a cut outcutout section in the cen

26、ter measuring 220 mm 8.7 in. across and it shall contain a rigid lip that is at least 50 mm 2 in. highrunning around three sides of the perimeter of the plate, as shown in Fig. 2.NOTE 4To facilitate the ease with which the test can be performed, the collector plate may contain legs or another suppor

27、t system so that only oneperson is needed to perform the concreteSCC collection process from the top section.6.4 Strike-off BarAs described in Test Method C173/C173M or Test Method C231.6.5 SieveA 4.75 mm (No. 4) rectangular sieve with minimum dimensions of 330 mm 13 in. by 630 mm 25 in.6.6 Sample R

28、eceptacleApan or wheelbarrow that is water-tight, has a nonabsorbent surface, and is large enough to allow bothremixing of the entire sample and retain a volume of concreteSCC sufficient to fill the column mold.6.7 Pouring Vessel for SCCA water-tight container having a volume such that concrete is n

29、ot spilled during placement in thecolumn mold.NOTE 5A pouring vessel with a pouring lip is useful in reducing the probability of concrete spilling while filling the mold.6.7 Other ToolsItems such as shovels and scoops capable of remixing the concreteSCC in the sample receptacle, filling thepouring v

30、essel, or both.7. Sample7.1 Obtain a sample of freshly-mixed self-consolidating concrete in accordance with Practice C192/C192M and place it in thesample receptacle.8. Procedure8.1 Perform this test on a flat, level work surface. Do not subject the work surface or the column mold to vibration ordist

31、urbance.8.2 Remixing of Sample: Remix the sample obtained in accordance with 7.1 in the sample receptacle using a shovel or scoopso that the concreteSCC is homogeneous.C1610/C1610M 1728.3 Dampen the interior of the mold, removing any standing water on the base plate within the column.FIG. 1 Detail o

32、f Column MoldFIG. 2 Detail of Collector PlateC1610/C1610M 1738.4 Fill Pouring VesselImmediately fill the pouring vessel with a portion of SCC from the sample receptacle, either by passingthe pouring vessel through the concrete or by scooping concrete into the vessel.8.5 Filling ProcedureImmediately

33、fill the mold with SCC by tilting the pouring vessel. Position the lowest point on the rimof the pouring vessel no more than 125 mm 5 in. above the top of the mold. Ensure an even distribution of concrete, withoutrodding the concrete or tapping the sides of the mold, while filling the mold.8.4 If ne

34、cessary, repeat the procedures Fill the mold with SCC in 8.4 andaccordance with 8.5Practice C1758/C1758Muntil themold is filled slightly above its rim. . Completely fill the mold within 2 min.8.5 After filling the mold, strike off the top surface by sliding the strike-off bar across the top rim of t

35、he mold with a sawingmotion until the concreteSCC surface is level with the top of the mold.8.6 Allow the concreteSCC to stand undisturbed in the mold for 15 6 1 min.8.7 Immediately following the standing period, securely hold the top section of the mold and remove the fastening system.Complete Step

36、s 8.108.8 8.178.15 within 20 min thereafter.8.8 Place the cut out cutout section of the collector plate around the column just below the joint between the “Top” and “Middle”sections to catch and collect concrete.SCC.8.9 Grasp the upper section of the mold and, using a horizontal rotating motion, scr

37、eed the concreteSCC in the top section ofthe column on to the collector plate and then deposit it into a plastic pail.8.10 Repeat Steps 8.98.7 8.118.9 to remove the concreteSCC from the middle section of the mold. Discard this concrete.SCC.8.11 Place the concreteSCC sample collected from the upper s

38、ection of the mold onto the 4.75 mm (No. 4) sieve.8.12 Wash the concreteSCC on the 4.75 mm (No. 4) sieve so that only coarse aggregate remains on the sieve. Deposit the coarseaggregate into a clean plastic pail.8.13 Repeat Steps 8.138.11 and 8.148.12 for the concreteSCC retained in the bottom sectio

39、n of the mold.8.14 Bring the coarse aggregate obtained from both the top and bottom sections of the mold to a surface-dry condition by rollingit in a large absorbent cloth until all visible films of water are removed.8.15 Determine the mass of coarse aggregate from the top and bottom sections of the

40、 mold to the nearest 50 g 0.1 lb.9. Calculation9.1 Calculate the percent static segregation using the following equation:S 52FCAB 2CAT!CAB1CAT!G*100,if CAB.CATS 50,if CAB#CATwhere:S = static segregation, percentCAT = mass of coarse aggregate in the top section of the columnCAB = mass of coarse aggre

41、gate in the bottom section of the column10. Report10.1 Mixture designation.10.2 The mass of coarse aggregate obtained from the top and bottom sections of the column separately to the nearest 0.05 kg0.1 lb.10.3 The static segregation to the nearest 0.1 percent.11. Precision and Bias11.1 PrecisionThe

42、estimate of the precision of this test method is provisional.Arepeatability standard deviation of 0.2 % wasobtained from a study (1)4 involving five replicate batches of a concreteSCC mixture with a mean static segregation of 3.8 %.11.2 BiasThe procedure used in this test method has no bias since co

43、arse aggregate segregation of self-consolidating concreteis defined only in terms of this method.12. Keywords12.1 coarse aggregate; self-consolidating concrete; stability; static segregation4 The boldface numbers in parentheses refer to a list of references at the end of this standard.C1610/C1610M 1

44、74REFERENCES(1) J., Assaad, K., H., Khayat, and J., Daczko, “Evaluation of Static Stability of Self-Consolidating Concrete”, ACI Materials Journal, Vol 101, No. 3,May-June, 2004, pp. 207215.SUMMARY OF CHANGESCommittee C09 has identified the location of selected changes to this standard since the las

45、t issue(C1610/C1610M 10)14) that may impact the use of this standard. (Approved April 1, 2014.)June 15, 2017.)(1) Revised definition ofAdded Practice C1758/C1758M Sample Receptacle in 6.6 and Small Tools in 6.8.to ReferencedDocuments.(2) AddedSection 8definition for Pouring Vessel in 6.7.Replaced th

46、e filling procedure with a reference to Practice C1758/C1758M.(3) Revised Section 8.(4) Added new 8.3.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 de

47、termination 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 revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved

48、or withdrawn.Your comments 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 th

49、at 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 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 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