EN-12390-2.pdf

June 2001

D EUTSCHE NORM

Testing hardened concrete

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Part 2: Making and curing specimens for strength tests English version of DIN EN 12390-2

EN 12390-2

ICS 91.100.30 Prüfung von Festbeton – Teil 2: Herstellung und Lagerung von Probekörpern für Festigkeitsprüfungen

European Standard EN 12390-2 : 2000 has the status of a DIN Standard. A comma is used as the decimal marker.

National foreword This standard has been prepared by CEN/TC 104 ‘Concrete (performance, production, placing and compliance criteria)’ (Secretariat: Germany), SC 1 ‘Concrete (performance, production, placing and compliance criteria)’. The responsible German body involved in its preparation was the Normenausschuss Bauwesen (Building and Civil Engineering Standards Committee), Technical Committee 07.05.00 Prüfverfahren für Beton. It should be noted that the conditions of curing the concrete specimens customary in Germany differ from those specified in subclause 5.5.3 (see National Annex).

National Annex NA (informative) Curing of concrete specimens when testing compressive strength and modulus of elasticity NA.1 General This national annex describes the conditions customary in Germany for the curing of concrete specimens intended to be used for compression tests and when testing the modulus of elasticity. It is essential that the test parameters given in subclause NA.2 are adhered to, use of the parameters given in footnotes 1) and 2) being recommended.

NA.2

Curing conditions

After preparation, the specimens shall be conditioned in moulds in a closed room at a draught-free location, protected from loss of moisture (e.g. by covering with polyethylene sheeting), for (24 t 2) hours at a temperature of 15 °C to 22 °C 1). During hardening, the environment shall be vibration-free. After (24 t 2) hours, the specimens shall be demoulded, placed on gratings and cured for six days in water at a temperature of (20 t 2) °C or, alternatively, in a cabinet at a temperature of (20 t 2) °C and a relative humidity exceeding 95 %. Seven days after preparation, the specimens shall be removed from the water cabinet, placed on gratings and stored in a closed room at a draught-free location at a temperature of 15 °C to 22 °C 2).

EN comprises 7 pages.

) A temperature of (20 t 2) °C is recommended. ) A temperature of (20 t 2) °C at a relative humidity of (65 t 5) % is recommended.

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Ref. No. DIN EN 12390-2 : 2001-06 English price group 06

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EN 12390-2 October 2000

ICS 91.100.30

English version

Testing hardened concrete Part 2: Making and curing specimens for strength tests Essai pour béton durci – Partie 2: Confection et conservation des éprouvettes pour essais de résistance

Prüfung von Festbeton – Teil 2: Herstellung und Lagerung von Probekörpern für Festigkeitsprüfungen

This European Standard was approved by CEN on 2000-02-03. 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 lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. The European Standards exist in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom.

ÈÉË European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Management Centre: rue de Stassart 36, B-1050 Brussels

© 2000. CEN – All rights of exploitation in any form and by any means reserved worldwide for CEN national members.

Ref. No. EN 12390-2 : 2000 E


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Contents Page

Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Apparatus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Test report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 3 4 4 5 5 7


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EN-12390-2.pdf

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