1、Designation: C1610/C1610M 10C1610/C1610M 14Standard 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. Within the text, the SI unitsare shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be usedindependently of the other. Combining values from the two systems may result in non-conformance with the standard.
5、1.4 The text of this standard references notes and footnotes 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 s
6、tandard 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 to use. (WarningFresh hydraulic ce
7、mentitious mixtures are caustic and may cause chemical burns to skin andtissue upon prolonged exposure.2)2. Referenced Documents2.1 ASTM Standards:3C125 Terminology Relating to Concrete and Concrete AggregatesC127 Test Method for Density, Relative Density (Specific Gravity), and Absorption of Coarse
8、 AggregateC173/C173M Test Method for Air Content 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 Assessmen
9、t of Static Segregation Resistance of Self-Consolidating Concrete Using PenetrationTestD1785 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 method, refer to Terminology C125.3.2 Defini
10、tions of Terms Specific to This Standard:3.2.1 Static 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. Themo
11、ld is separated into three sections representing different levels of the cylindrical specimen (or column). Portions of concrete1 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-Consoli
12、dating Concrete.Current edition approved Oct. 1, 2010April 1, 2014. Published November 2010May 2014. Originally approved in 2006. Last previous edition approved in 20062010 asC1610/C1610M06a. DOI: 10.1520/C1610_C1610M-10. 10. DOI: 10.1520/C1610_C1610M-14.2 Section on Safety Precautions, Manual of Ag
13、gregate and Concrete Testing, Annual Book of ASTM Standards, 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 AS
14、TM 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 version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consul
15、t 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 section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, P
16、A 19428-2959. United States1from 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 segregation is calculated.5. Significance and Use5.1 Th
17、is 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 placement. Test MethodC1712 provides a rapid method fo
18、r 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 concrete that can be prone to segregation if not proporti
19、oned 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 for the application.NOTE 2Some level of segregation
20、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 meeting therequirements of Specification D1785. The c
21、olumn shall be 8 in. 200 mm200 mm 8 in. in nominal diameter 26 in. 660mm660 mm 26 in. in height and separated into 3 sections. The top section shall be 6.5 in. 165 mm165 mm 6.5 in. in height,the middle section 13 in. 330 mm330 mm 13 in. in height, and the bottom section 6.5 in. 165 mm165 mm 6.5 in.
22、in height,as shown in Fig. 1. Each section shall have its ends flat and plane and be marked as “Top”, “ Middle”, or “Bottom” relative toits location in the column. Couplers, brackets, clamps, or other equivalent fastening systems shall be used for securing the columnFIG. 1 Detail of Column MoldC1610
23、/C1610M 142sections together to form a mortar-tight joint and to secure the column to the base plate.The column mold shall be securely attachedto a non-absorbent, rigid base plate measuring at least 12 in. 300 mm 12 in. 300 mm300 mm 12 in. 300 mm 12 in.square.NOTE 3Experience has shown that a base p
24、late made from sealed or laminated plywood at least 0.75 in. 20 mm20 mm 0.75 in. thick is suitablefor securing the column.6.3 Collector PlateThe collector plate, used to obtain concrete from the top section of the column, shall be made of anynonabsorbent, rigid material measuring at least 20 in. 510
25、 mm 20 in. 510 mm510 mm. 20 in 510 mm 20 in. square. Theplate shall contain a cut out section in the center measuring 8.7 in. 220 mm220 mm 8.7 in. across and it shall contain a rigidlip that is at least 2 in. 50 mm50 mm 2 in. high running around three sides of the perimeter of the plate, as shown in
26、 Fig. 2.NOTE 4To facilitate the ease with which the test can be performed, the collector plate may contain legs or another support system so that only oneperson is needed to perform the concrete collection process from the top section.6.4 Strike-off BarAs described in Test Method C173/C173M or Test
27、Method C231.6.5 SieveA 4.75 mm (No. 4) rectangular sieve with minimum dimensions of 13 in. 330 mm 25 in. 630 mm.330 mm 13in. 630 mm 25 in.6.6 Sample ReceptacleThe receptacle shall be a heavy-gage metal pan, wheelbarrow, or flat, clean nonabsorbent board ofsufficient capacity to allow easyApan or whe
28、elbarrow that is water-tight, has a nonabsorbent surface, and is large enough to allowboth remixing of the entire sample with a shovel, trowel, or scoop.and retain a volume of concrete sufficient to fill the column mold.6.7 Pouring Vessel for SCCA water-tight container having a volume such that conc
29、rete is not 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.6.8 SmallOther ToolsTools and items Items such as shovels, plastic pails, trowels, scoops and rubber gloves shall be prov
30、ided.shovels and scoops capable of remixing the concrete in the sample receptacle, filling the pouring vessel, 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 the col
31、umn segregation this test on a flat, level work surface. Do not subject the testingwork surface andor thecolumn mold to any vibration or disturbance.8.2 Remixing of Sample: Remix the sample obtained in accordance with Section 7.1 in the sample receptacle using a shovel orscoop so that the concrete i
32、s homogeneous.8.3 Dampen the interior of the mold, removing any standing water on the base plate within the column.FIG. 2 Detail of Collector PlateC1610/C1610M 1438.4 Fill Pouring VesselImmediately fill the pouring vessel with a portion of SCC from the sample receptacle, either by passingthe pouring
33、 vessel through the concrete or by scooping concrete into the vessel.8.5 Filling ProcedureImmediately 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 co
34、ncrete, withoutrodding the concrete or tapping the sides of the mold, while filling the mold.8.6 Filling Procedure: Using a shovel, scoop, or plastic pail,If necessary, repeat the procedures in 8.4 immediately filland 8.5the column mold with concrete completely and above the rim,until the mold is fi
35、lled slightly above its rim. Completely fill the moldwithin 2 min.8.7 After filling the mold, strike off the top surface by sliding the strike-off bar across the top rim of the mold with a sawingmotion until the concrete surface is level with the top of the mold.8.8 Allow the concrete to stand undis
36、turbed in the column mold for 15 6 1 min.8.9 Immediately following the standing period, securely hold the top section of the mold and remove the fastening system.Complete Steps 8.78.10 8.17 8.14within 20 min thereafter.8.10 Place the cut out section of the collector plate around the column just belo
37、w the joint between the “Top” and “Middle”sections to catch and collect concrete.8.11 Grasp the upper section of the column mold and, using a horizontal rotating motion, screed the concrete fromin the topsection of the column on to the collector plate and then deposit it into a plastic pail.8.12 Rep
38、eat Steps 8.68.9 8.11 8.8to remove the concrete from the middle section of the column mold and discard the mold.Discard this concrete.8.13 Place the concrete sample collected from the upper section of the columnmold onto the 4.75 mm (No. 4) sieve.8.14 Wash the concrete on the 4.75 mm (No. 4) sieve s
39、o that only coarse aggregate remains on the sieve and then deposit sieve.Deposit the coarse aggregate into a clean plastic pail.8.15 Repeat Steps 8.108.13 and 8.14 8.11for the concrete retained in the bottom section of the mold.8.16 Bring the coarse aggregate obtained from both the top and bottom se
40、ctions of the columnmold to a surface-dry conditionby rolling it in a large absorbent cloth until all visible films of water are removed.8.17 Determine the mass of coarse aggregate from the top and bottom sections of the columnmold to the nearest 0.1 lb 50 g.50g 0.1 lb.9. Calculation9.1 Calculate th
41、e percent static segregation using the following equation:S 52FCAB 2CAT!CAB1CAT!G*100,if CAB.CATS 50,if CAB#CATwhere:where:S = static segregation, percentCAT = mass of coarse aggregate in the top section of the columnCAB = mass of coarse aggregate in the bottom section of the column10. Report10.1 Mi
42、xture designation.10.2 The mass of coarse aggregate obtained from the top and bottom sections of the column separately to the nearest 0.1 lb 0.05kg.0.05 kg 0.1 lb.10.3 The static segregation to the nearest 0.1 percent.11. Precision and Bias11.1 PrecisionThe estimate of the precision of this test met
43、hod is provisional.Arepeatability standard deviation of 0.2 % wasobtained from a study (1)4 involving five replicate batches of a concrete mixture with a mean static segregation of 3.8 %.4 The boldface numbers in parentheses refer to a list of references at the end of this standard.C1610/C1610M 1441
44、1.2 BiasThe procedure used in this test method has no bias since coarse aggregate segregation of self-consolidating concreteis defined only in terms of this method.12. Keywords12.1 coarse aggregate; self-consolidating concrete; stability; static segregationREFERENCES(1) J., Assaad, K., H., Khayat, a
45、nd J., Daczko, “Evaluation of Static Stability of Self-Consolidating Concrete”, ACI Materials Journal, Vol.Vol 101, No.3, May-June, 2004, pp. 207 215.215.SUMMARY OF CHANGESCommittee C09 has identified the location of selected changes to this test method standard since the last issue,issue (C1610/C16
46、10M06a, 10) that may impact the use of this test method. standard. (Approved OctoberApril1, 2010)2014.)(1) Added new 1.5 to clarify the scope of this test method and renumbered subsequent paragraphs.(1) Revised definition of Sample Receptacle in 6.6 and Small Tools in 6.8.(2) Added definition for Po
47、uring Vessel in 6.7.(3) Revised Section 8.(4) Added new 8.3.(2) Revised 5.1 to clarify the significance and use of this test method.(3) Added new Note 1 and renumbered subsequent notes.(4) Revised 6.2, 6.3, and Fig. 2 to clarify dimensions of the collector plate.ASTM International takes no position
48、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 any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.Th
49、is 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 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
