1、August 2009DEUTSCHE NORM English price group 6No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 91.100.30!$YA“1543029www
2、.din.deDDIN EN 12350-1Testing fresh concrete Part 1: SamplingEnglish version of DIN EN 12350-1:2009-08Prfung von Frischbeton Teil 1: ProbenahmeEnglische Fassung DIN EN 12350-1:2009-08SupersedesDIN EN 12350-1:2000-03www.beuth.deDocument comprises 8 pagesNational foreword This standard has been prepar
3、ed by Technical Committee CEN/TC 104 “Concrete and related products” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Bauwesen (Building and Civil Engineering Standards Committee), Technical Committee NA 005-07-05 AA Prfverfahren fr Beton.
4、Amendments This standard differs from DIN EN 12350-1:2000-03 as follows: a) The standard has been editorially revised. b) The method for obtaining composite and spot samples of fresh concrete has been revised. Previous editions DIN 1048: 1925-09, 1932-04, 1937-10, 1943x DIN 1048-1: 1972-01, 1978-12,
5、 1991-06 DIN 1048-3: 1975-01 DIN 1048-5: 1991-06 DIN EN 12350-1: 2000-03 2 DIN EN 12350 :2009-08 -1EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12350-1 March 2009 ICS 91.100.30 Supersedes EN 12350-1:1999 English Version Testing fresh concrete Part 1: Sampling Essais pour bton frais Partie 1:
6、 Prlvement Prfung von Frischbeton Teil 1: Probenahme This 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
7、alteration. Up-to-date lists and bibliographical references concerning such national standards 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
8、 translationunder the responsibility of a 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, Ger
9、many, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG
10、 Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12350-1:2009: EEN 12350-1:2009 (E) Contents PageForeword 3 1 Scope 52 Normative references 53 Terms and definitions .54 Appa
11、ratus .65 Sampling .66 Report of sampling 72DIN EN 12350-1:2009-08 EN 12350-1:2009 (E) 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 statu
12、s of a national standard, either 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
13、subject of patent rights. CEN and/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; P
14、art 2: Slump-test; Part 3: Vebe 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: S
15、elf-compacting concrete - L-box 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 ente
16、ring the eyes, mouth and nose whilst 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 th
17、e skin immediately. 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 organizations of th
18、e 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, Slovaki
19、a, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. 3DIN EN 12350 :2009-08 -1EN 12350-1:2009 (E) 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 on t
20、he 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 followi
21、ng 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 minu
22、te 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 mo
23、re increments thoroughly mixed together 3.4 increment quantity of concrete taken by the single operation of a scoop or similar sampling device 4DIN EN 12350 :2009-08 -1EN 12350-1:2009 (E) 4 Apparatus 4.1 Scoop, or similar sampling device, made from non-absorbent material not readily attacked by ceme
24、nt 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
25、 Sampling 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
26、 the 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
27、 of 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
28、 stream. 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
29、 increment(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 th
30、e 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 extr
31、eme 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 containe
32、r(s) to ensure that no more than a light covering of mortar is left adhering to the container(s). 5DIN EN 12350 :2009-08 -1EN 12350-1:2009 (E) 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) identificat
33、ion of 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 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. 6DIN EN 12350 :2009-08 -1
