BS EN 12350-1-2009 Testing fresh concrete - Part 1 Sampling《新拌混凝土试验 第1部分 取样》.pdf

1、BS EN12350-1:2009ICS 91.100.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDTesting fresh concretePart 1: SamplingThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 August2009 BSI 2009ISBN 978 0 580 58788 7

2、Amendments/corrigenda issued since publicationDate CommentsBS EN 12350-1:2009National forewordThis British Standard is the UK implementation of EN 12350-1:2009. Itsupersedes BS EN 12350-1:2000 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/517/1, Con

3、crete production and testing.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard c

4、annot confer immunityfrom legal obligations.BS EN 12350-1:2009EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 12350-1March 2009ICS 91.100.30 Supersedes EN 12350-1:1999 English VersionTesting fresh concrete - Part 1: SamplingEssais pour bton frais - Partie 1: Prlvement Prfung von Frischbeton - Teil

5、 1: ProbenahmeThis European Standard was approved by CEN on 20 January 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliog

6、raphical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a

7、CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, It

8、aly, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Br

9、ussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12350-1:2009: EBS EN 12350-1:2009EN 12350-1:2009 (E) 2 Contents Page Foreword 3 1 Scope 52 Normative references 53 Terms and definitions .54 Apparatus .65 Sampling .66 Repor

10、t of sampling 7BS EN 12350-1:2009EN 12350-1:2009 (E) 3 Foreword This document (EN 12350-1:2009 has been prepared by Technical Committee CEN/TC 104 “Concrete and related products”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either

11、 by publication of an identical text or by endorsement, at the latest by September 2009, and conflicting national standards shall be withdrawn at the latest by September 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN an

12、d/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12350-1:1999. This standard is one of a series concerned with testing concrete. This series EN 12350 includes the following parts: Part 1: Sampling; Part 2: Slump-test; Part 3: Vebe

13、test; Part 4: Degree of compactability; Part 5: Flow table test; Part 6: Density; Part 7: Air content - Pressure methods; Part 8: Self-compacting concrete - Slump-flow test (in preparation); Part 9: Self-compacting concrete - V-funnel test (in preparation); Part 10: Self-compacting concrete - L-box

14、test (in preparation); Part 11: Self-compacting concrete - Sieve segregation test (in preparation); Part 12: Self-compacting concrete - J-ring test (in preparation). CAUTION When cement is mixed with water, alkali is released. Take precautions to avoid dry cement entering the eyes, mouth and nose wh

15、ilst mixing concrete. Prevent skin contact with wet cement or concrete by wearing suitable protective clothing. If cement or concrete enters the eye, immediately wash it out thoroughly with clean water and seek medical treatment without delay. Wash wet concrete off the skin immediately. BS EN 12350-

16、1:2009EN 12350-1:2009 (E) 4 The following amendments have been made to the 1999-10 edition of this standard: editorial revision clarification on the method for obtaining a composite or spot sample of fresh concrete According to the CEN/CENELEC Internal Regulations, the national standards organizatio

17、ns of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,

18、 Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 12350-1:2009EN 12350-1:2009 (E) 5 1 Scope This European Standard specifies two procedures for sampling fresh concrete, by composite sampling and by spot sampling. NOTE The requirement for remixing the sample before tests o

19、n the fresh concrete, or before making test specimens, is included in the relevant standards. When mixing and sampling of concrete is done in a laboratory, different procedures may be required. 2 Normative references None applicable 3 Terms and definitions For the purposes of this document, the foll

20、owing terms and definitions apply. 3.1 batch quantity of fresh concrete which is: mixed in one cycle of operation of a batch mixer; discharged during 1 min from a continuous mixer; or conveyed ready-mixed in a truck mixer when the load requires more than one cycle of a batch mixer or more than one m

21、inute of operation of a continuous mixer 3.2 composite sample quantity of concrete, consisting of a number of increments distributed through a batch or mass of concrete thoroughly mixed together 3.3 spot sample quantity of concrete taken from part of a batch or mass of concrete, consisting of one or

22、 more increments thoroughly mixed together 3.4 increment quantity of concrete taken by the single operation of a scoop or similar sampling device BS EN 12350-1:2009EN 12350-1:2009 (E) 6 4 Apparatus 4.1 Scoop, or similar sampling device, made from non-absorbent material not readily attacked by cement

23、 paste, suitable for taking increments of concrete. 4.2 Container(s), made from non-absorbent material not readily attacked by cement paste, for receiving increments of the concrete. 4.3 Thermometer, (optional), to measure the temperature of the fresh concrete to an accuracy of 1 C. 5 Sampling 5.1 S

24、ampling plan Depending upon the intended use of the sample, decide whether a spot sample or a composite sample is to be taken. Take at least 1,5 times the quantity estimated as being required for the tests. 5.2 Obtaining a composite sample Clean all the apparatus prior to use. Using the scoop take t

25、he required number of increments uniformly distributed throughout the batch. When sampling from the discharging stream of concrete from a stationary batch mixer or ready-mixed concrete truck, disregard the first part and the last part of the load. If the batch has been deposited in a heap or heaps o

26、f concrete, take the increments, wherever possible, distributed through the depth of the concrete, as well as over the exposed surface, at a minimum of five different places. When sampling from a falling stream, take the increments in such a way as to represent the whole width and thickness of the s

27、tream. Deposit the increments into the container(s). Record the date and time of sampling. NOTE When obtaining a composite sample from a ready mixed concrete truck a minimum of four increments is recommended 5.3 Obtaining a spot sample Clean all the apparatus prior to use. Using the scoop take the i

28、ncrement(s) from the required part of a batch or mass of concrete. When sampling from a falling stream, take the increment(s) in such a way as to represent the whole width and thickness of the stream. Deposit the increment(s) in the container. Record the date and time of sampling. 5.4 Measuring the

29、temperature of the sample If required, the temperature of the concrete in the container(s) shall be measured. 5.5 Transporting, handling and care of samples At all stages of sampling, transport and handling, protect the fresh concrete samples against contamination, gaining or losing water and extrem

30、e variations of temperature. NOTE The properties of fresh concrete change with time after mixing, depending upon the environmental conditions. This should be taken into account in deciding the time when tests are carried out or specimens made. Take care when the concrete is taken from the container(

31、s) to ensure that no more than a light covering of mortar is left adhering to the container(s). BS EN 12350-1:2009EN 12350-1:2009 (E) 7 6 Report of sampling Each sample shall be accompanied by a report from the person responsible for taking the sample. The report shall include: a) identification of

32、the sample; b) description of where the sample was taken; c) date and time of sampling; d) type of sample (composite or spot); e) any deviations from the standard method of sampling; f) declaration by the person technically responsible for the sampling that it was carried out in accordance with this

33、 document, except as noted in item e). The report may include: g) ambient temperature and weather conditions; h) temperature of the concrete sample at the time of sampling. BS EN12350-1:2009BSI GroupHeadquarters 389Chiswick High Road,London, W4 4AL, UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 - Bri

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