DIN EN 12390-11-2015 Testing hardened concrete - Part 11 Determination of the chloride resistance of concrete unidirectional diffusion German version EN 12390-11 2015《试验硬化混凝土 第11部分.pdf

1、November 2015 English price group 15No part of this translation 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!%HEh“2373469www.din.d

2、eDIN EN 12390-11Testing hardened concrete Part 11: Determination of the chloride resistance of concrete, unidirectional diffusion;English version EN 12390-11:2015,English translation of DIN EN 12390-11:2015-11Prfung von Festbeton Teil 11: Bestimmung des Chloridwiderstandes von Beton Einseitig gerich

3、tete Diffusion;Englische Fassung EN 12390-11:2015,Englische bersetzung von DIN EN 12390-11:2015-11Essais pour bton durci Partie 11: Dtermination de la rsistance du bton la pntration des chlorures, diffusion unidirectionnelle;Version anglaise EN 12390-11:2015,Traduction anglaise de DIN EN 12390-11:20

4、15-11SupersedesDIN SPEC 1176(DIN CEN/TS 12390-11):2010-05www.beuth.deDocument comprises 35 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.11.15 DIN EN 12390-11:2015-11 2 A comma is used as the decimal marker. National foreword

5、 This document (EN 12390-11:2015) has been prepared by Technical Committee CEN/TC 104 “Concrete and related products” (Secretariat: DIN, Germany) The responsible German body involved in its preparation was DIN-Normenausschuss Bauwesen (DIN Standards Committee Building and Civil Engineering), Working

6、 Committee NA 005-07-05 AA Prfverfahren fr Beton (SpA CEN/TC 104/SC 1/TG 8 und CEN/TC 104/SC 1/TG 11 sowie CEN/TC 51/WG 12). Amendments This standard differs from DIN CEN/TS 12390-11 (DIN SPEC 1176):2010-05 as follows: a) Clause 2 “Normative references” has been updated; b) a coefficient of determin

7、ation has been added in Clause 8; additional guidance on performing the calculations has also been added; c) a requirement on the inclusion of graphs with analysis points has been added to the test report in Clause 9 along with other modifications; in addition, information on the coefficient of dete

8、rmination has been included; d) Table 3 has been added to Clause 10; e) a new Annex, Annex E (informative) “Guidance on the test procedure” has been added; f) a new Annex, Annex F (informative) “Examples for calibration of the calculation procedure for regression analysis” has been added; g) the Bib

9、liography has been revised; h) the standard has been editorially revised. Previous editions DIN CEN/TS 12390-11 (DIN SPEC 1176): 2010-05 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12390-11 August 2015 ICS 91.100.30 Supersedes CEN/TS 12390-11:2010English Version Testing hardened concrete -

10、Part 11: Determination of the chloride resistance of concrete, unidirectional diffusion Essais pour bton durci - Partie 11 : Dtermination de la rsistance du bton la pntration des chlorures, diffusion unidirectionnelle Prfung von Festbeton - Teil 11: Bestimmung des Chloridwiderstandes von Beton - Ein

11、seitig gerichtete Diffusion This European Standard was approved by CEN on 19 June 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date list

12、s and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC 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 translation under

13、the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yug

14、oslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPE

15、N DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12390-11:2015 EEN 12390-11:2015 (E) 2 Contents Page European fo

16、reword .3 Introduction .5 1 Scope 6 2 Normative references 6 3 Term, definitions symbols and abbreviated terms .6 3.1 Terms and definitions .6 3.2 Symbols and abbreviated terms 7 4 Principle 8 5 Reagents and apparatus .8 5.1 Reagents .8 5.2 Apparatus .9 6 Preparation of specimens 10 6.1 Preparing su

17、b-specimens 10 6.2 Conditioning and preparation of profile specimen for chloride testing . 11 7 Procedure 13 7.1 Exposure conditions 13 7.2 Exposure method 14 7.3 Exposure period 14 7.4 Determination of initial chloride content (Ci) . 14 7.5 Profile grinding . 15 7.6 Chloride analysis 16 8 Regressio

18、n procedure and expression of results . 16 9 Test report . 19 10 Precision 19 Annex A (informative) Diffusion coefficients 21 Annex B (informative) Core test specimen 22 Annex C (informative) Typical equipment and procedure for vacuum saturation 23 Annex D (normative) Immersion method for large spec

19、imens 25 Annex E (informative) Guidance on the test procedure . 26 Annex F (informative) Examples for calibration of the calculation procedure for regression analysis 28 Bibliography . 33 DIN EN 12390-11:2015-11 EN 12390-11:2015 (E) 3 European foreword This document (EN 12390-11:2015) has been prepa

20、red 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 by publication of an identical text or by endorsement, at the latest by February 2016 and conflicting nation

21、al standards shall be withdrawn at the latest by February 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersed

22、es CEN/TS 12390-11:2010. In comparison to CEN/TS 12390-11:2010, the following changes have been made: In Clause 2, the normative references have been updated; In Clause 8, a minimum value of the coefficient of determination has been added and further guidance on the calculations has been added; In C

23、lause 9, a graph and details of points included and excluded plus the coefficient of determination have been added; In Clause 10, Table 3 has been added; A new Annex E (informative) “Guidance on test procedure“ has been added; A new Annex F (informative) “Examples for calibration of the calculation

24、procedure for regression analysis“ has been added; The Bibliography has been reviewed; The standard has been revised editorially. The drafting of this European Standard was delegated to CEN/TC 51(CEN/TC104)/JWG12/TG5. This test method is one of a series concerned with testing concrete. At the behest

25、 of CEN, RILEM reviewed chloride testing methods 1 and this European Standard is based on their recommendations. In addition, this European Standard draws on recommendations from the EU-project “Chlortest” 5thFramework Programme (GRD1-2002-71808/G6RD-CT-2002-00855) 2 immersion test recommendation as

26、 well as the Nordtest Method NT Build 443 Concrete, hardened: Accelerated Chloride penetration 3. The series EN 12390, Testing hardened concrete includes the following parts: Part 1: Shape, dimensions and other requirements of specimens and moulds Part 2: Making and curing specimens for strength tes

27、ts Part 3: Compressive strength testing of specimens Part 4: Compressive strength - Specification of testing machines Part 5: Flexural strength of test specimens DIN EN 12390-11:2015-11 EN 12390-11:2015 (E) 4 Part 6: Tensile splitting strength of test specimens Part 7: Density of hardened concrete P

28、art 8: Depth of penetration of water under pressure Part 9: Freeze-thaw resistance - Scaling (Technical Specification) Part 10: Determination of the relative carbonation resistance of concrete (Technical Specification) Part 11: Determination of the chloride resistance of concrete, unidirectional dif

29、fusion Part 13: Determination of the secant modulus of elasticity in compression According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republ

30、ic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN

31、 12390-11:2015-11 EN 12390-11:2015 (E) 5 Introduction Steel reinforced concrete structures exposed to the ingress of chloride, either from seawater or other sources, need to be durable for at least the intended working life. The possibility of reinforcement corrosion is significantly increased as th

32、e chloride level at the embedded reinforcement increases. For this reason the chloride diffusivity or penetrability of the concrete is an important property to measure and this European Standard sets out a test method that may be applied to specimens cast or core specimens to assess the potential ch

33、loride resistance properties of a concrete mix. Specifications regarding the test procedure with core specimens are given in Annex B. NOTE This test method takes a minimum of 119 d comprising a minimum age of the specimen prior to testing of 28 d, a minimum of one day to prepare and condition the sp

34、ecimen and then 90 d to expose the specimen to the chloride solution. DIN EN 12390-11:2015-11 EN 12390-11:2015 (E) 6 1 Scope This European Standard is a method for determining the unidirectional non-steady state chloride diffusion and surface concentration of conditioned specimens of hardened concre

35、te. The test method enables the determination of the chloride penetration at a specified age, e.g. for ranking of concrete quality by comparative testing. Since resistance to chloride penetration depends on the ageing, including the effects of continual hydration, then the ranking may also change wi

36、th age. The test procedure does not apply to concrete with surface treatments such as silanes and it may not apply to concrete containing fibres (see E.1). 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its a

37、pplication. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 12390-2, Testing hardened concrete - Part 2: Making and curing specimens for strength tests EN 14629, Products and systems fo

38、r the protection and repair of concrete structures - Test methods - Determination of chloride content in hardened concrete 3 Term, definitions symbols and abbreviated terms For the purposes of this document, the following terms, definitions, symbols and abbreviated terms apply. 3.1 Terms and definit

39、ions 3.1.1 as-cast surface surface of a concrete element exposed in the construction works to a chloride environment 3.1.2 chloride content amount of acid-soluble chloride expressed in percent by mass of concrete 3.1.3 chloride penetration ingress of chlorides into concrete due to exposure to extern

40、al chloride sources 3.1.4 diffusion movement of molecules or ions under a concentration gradient, that is movement from a zone of high concentration to a zone with a lower concentration 3.1.5 diffusion coefficient proportionality between the molecular flux (e.g. rate of flow of chloride ions) and th

41、e concentration gradient in the diffusion equation Note 1 to entry: In this European Standard Ficks Law is adopted. Note 2 to entry: See Annex A. DIN EN 12390-11:2015-11 EN 12390-11:2015 (E) 7 3.1.6 initial chloride content Cichloride content at a distance sufficiently remote from the exposed surfac

42、e as to not have been influenced by penetration of the chloride exposure solution Note 1 to entry: It reflects the initial chloride content that came from the constituents when the concrete was mixed. 3.1.7 non-steady state diffusion coefficient Dnssdiffusion coefficient that takes into account simu

43、ltaneous chloride binding Note 1 to entry: The steady-state chloride diffusion coefficient is measured on water saturated specimens where chloride diffuses through a thin specimen between two reservoirs of chloride solution, where one reservoir is at a higher concentration than the other. This stead

44、y state chloride diffusion is not covered by this test method. The steady-state chloride diffusion coefficient only reflects the ionic transport diffusion through concrete, as the concrete is unable to bind any more chloride ion. Note 2 to entry: See Annex A. 3.1.8 profile grinding dry process grind

45、ing a concrete specimen in thin successive layers 3.1.9 vacuum saturated condition specimen that is vacuum saturated with water 3.2 Symbols and abbreviated terms CiInitial chloride content, % by mass of concrete; Cm,jMeasured chloride content of concrete layer j, % by mass of concrete Cr,jChloride c

46、ontent of layer j calculated according to Formula (1) using the most suitable combination of Cs and Dnss, % by mass of concrete CsCalculated chloride content at the exposed surface, % by mass of concrete CxChloride content measured at average depth x and exposure time t, % by mass of concrete DnssNo

47、n-steady state chloride diffusion coefficient, m2s-1; F Sum of squares of the residuals FR Flow rate (flux) in mol m-2s j1 to jn Ground layer defined in terms of the number of layers from the exposed surface, the surface layer being j1 r Repeatability R Reproducibility R2 Coefficient of determinatio

48、n DIN EN 12390-11:2015-11 EN 12390-11:2015 (E) 8 sr Repeatability standard deviation sR Reproducibility standard deviation S Sum of squares t Exposure time, seconds. u Variable of the integral with no units x Depth below the exposed surface to the mid-point of the ground layer j, m; z Adimensional parameter with no units xc /Gradient of concentration with the concentration expressed in mol/m3 4 Principle A specimen, either a cylinder or cube, shall be cast and cured in accordance with E