1、Designation:C232/C232M14Standard Test Method forBleeding of Concrete1This standard is issued under the fixed designation C232/C232M;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 parentheses ind
2、icates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method covers the determination of the relativequantity of mixing water that will bleed from a sample offreshly mixed concrete.1.2 When various concrete
3、s are to be compared,if thebatches are of similar unit weight,the sample masses shall notdiffer by more than 1 kg 2 lb.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsyst
4、em shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.Some values have only SI units because theinch-pound equivalents are not used in practice.NOTE1Sieve size is identified by its standard designation in Speci-fication E11.th
5、e alternative designation given in parentheses is forinformation only and does not represent a different standard sieve size.1.4 The text of this standard references notes and footnoteswhich provide explanatory material.These notes and footnotes(excluding those in tables and figures)shall not be con
6、sideredas requirements of the standard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limi
7、tations prior to use.(WarningFreshhydraulic cementitious mixtures are caustic and may causechemical burns to skin and tissue upon prolonged exposure).22.Referenced Documents2.1 ASTM Standards:3C29/C29M Test Method for Bulk Density(“Unit Weight”)and Voids in AggregateC125 Terminology Relating to Conc
8、rete and Concrete Ag-gregatesC138/C138M Test Method for Density(Unit Weight),Yield,and Air Content(Gravimetric)of ConcreteC172/C172M Practice for Sampling Freshly Mixed Con-creteC192/C192M Practice for Making and Curing Concrete TestSpecimens in the LaboratoryC670 Practice for Preparing Precision an
9、d Bias Statementsfor Test Methods for Construction MaterialsE11 Specification for Woven Wire Test Sieve Cloth and TestSieves3.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this test method referto Terminology C125.4.Significance and Use4.1 This test method provides procedures to
10、be used fordetermining the effect of variables of composition,treatment,environment,or other factors in the bleeding of concrete.It isalso permitted to be used to determine the conformance of aproduct or treatment with a requirement relating to its effect onbleeding of concrete.4.2 A specimen consol
11、idated by rodding and tested withoutfurther disturbance simulates conditions in which the concreteis not subjected to intermittent vibration after placement.5.Apparatus5.1 ContainerA cylindrical container of approximately14-L 12-ft3 capacity,having an inside diameter of 255 6 5mm 10 614in.and an ins
12、ide height of 280 6 5 mm 11 614in.The container shall conform to the requirements for ameasure in Test Method C29/C29M.The inside shall be free ofcorrosion,coatings,or lubricants.5.2 Scale,of sufficient capacity to determine the mass of theload required with an accuracy of 0.5%.Balances or scalessha
13、ll be calibrated at least annually or whenever there is reasonto question the accuracy of the equipment.1These test methods are under the jurisdiction of ASTM Committee C09 onConcrete and ConcreteAggregatesand are the direct responsibility of SubcommitteeC09.60 on Testing Fresh Concrete.Current edit
14、ion approved April 1,2014.Published April 2014.Originallyapproved in 1949.Last previous edition approved in 2013 as C232/C232M 13c.DOI:10.1520/C0232_C0232M-14.2Section on Safety Precautions,Manual of Aggregate and Concrete Testing,Annual Book of ASTM Standards,Vol 04.02.3For referenced ASTM standard
15、s,visit the ASTM website,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.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,1
16、00 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.3 Pipet,or similar instrument,for drawing off free waterfrom the surface of the test specimen.5.4 Glass Graduate,100-mL capacity for collecting andmeasuring the quantity of water withdrawn.5.5 Tamping RodA round,straight steel rod,16 mm 58in.in diameter and approximately 610 mm 24 in.in length,having the tamping end rounded to a hemispherical tip,thediameter of which is 16 mm 58in.5.6 The apparatus listed in 5.7,5.