EN 12390-13:2013
(Main)Testing hardened concrete - Part 13: Determination of secant modulus of elasticity in compression
Testing hardened concrete - Part 13: Determination of secant modulus of elasticity in compression
This European Standard specifies the method for the determination of the secant modulus of elasticity in compression of hardened concrete on test specimens which may be cast or taken from a structure.
The test method allows the determination of two secant moduli of elasticity: the initial modulus, EC,0 measured at first loading and the stabilized modulus, EC,S measured after three loading cycles.
Two different test methods are given. The first (method A) is for determination of both initial and stabilized moduli, the second (method B) is for determination of stabilized modulus only.
Prüfung von Festbeton - Teil 13: Bestimmung des Elastizitätsmoduls unter Druckbelastung (Sekantenmodul)
Diese Norm legt das Verfahren zur Bestimmung des Elastizitätsmoduls von Festbeton als Sekantenmodul unter Druckbelastung unter Verwendung von in Form hergestellten oder aus Bauwerken entnommenen Probekörpern fest.
Dieses Prüfverfahren ermöglicht die Bestimmung von zwei Elastizitätsmoduln: den anfänglichen Modul EC,0, der bei der ersten Belastung, und den stabilisierten Modul EC,S, der nach drei Belastungszyklen gemessen wird.
Es werden zwei unterschiedliche Prüfverfahren angegeben. Das erste Verfahren (Verfahren A) dient zur Bestimmung sowohl des anfänglichen als auch des stabilisierten Elastizitätsmoduls, während das zweite Ver-fahren (Verfahren B) nur zur Bestimmung des stabilisierten Elastizitätsmoduls dient.
Essais pour béton durci - Partie 13: Détermination du module sécant d’élasticité en compression
La présente Norme européenne spécifie la méthode de détermination du module sécant d’élasticité en compression du béton durci, en utilisant des éprouvettes pouvant avoir été moulées ou prélevées dans une structure.
La méthode d’essai permet de déterminer les deux modules sécants d’élasticité : le module initial, EC,0, mesuré lors de la première application de la charge et le module stabilisé, EC,S, mesuré après trois cycles de chargement.
Deux méthodes différentes sont indiquées. La première (méthode A) porte sur la détermination à la fois du module initial et du module stabilisé, la seconde (méthode B) concerne la détermination du module stabilisé uniquement.
Preskušanje strjenega betona - 13. del: Določanje sekantnega modula elastičnosti pri tlačni obremenitvi
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Prüfung von Festbeton - Teil 13: Bestimmung des Elastizitätsmoduls unter Druckbelastung (Sekantenmodul)Essai pour béton durci - Partie 13: Détermination du module sécant d'élasticité en compressionTesting hardened concrete - Part 13: Determination of secant modulus of elasticity in compression91.100.30Beton in betonski izdelkiConcrete and concrete productsICS:Ta slovenski standard je istoveten z:EN 12390-13:2013SIST EN 12390-13:2014en,fr,de01-april-2014SIST EN 12390-13:2014SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12390-13
October 2013 ICS 91.100.30 English Version
Testing hardened concrete - Part 13: Determination of secant modulus of elasticity in compression
Essais pour béton durci - Partie 13: Détermination du module sécant d'élasticité en compression
Prüfung von Festbeton - Teil 13: Bestimmung des Elastizitätsmoduls unter Druckbelastung (Sekantenmodul)This European Standard was approved by CEN on 21 September 2013.
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 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 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 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 United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
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Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12390-13:2013 ESIST EN 12390-13:2014
This standard is one of a series concerned with testing concrete. The series EN 12390, Testing hardened concrete, consists of the following parts: Part 1: Shape, dimensions and other requirements of specimens and moulds Part 2: Making and curing specimens for strength tests Part 3: Compressive strength of test specimens
Part 4: Compressive strength - Specification for testing machines Part 5: Flexural strength of test specimens Part 6: Tensile splitting strength of test specimens Part 7: Density of hardened concrete Part 8: Depth of penetration of water under pressure Part 13: Determination of 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 Republic, 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.
EC,0
secant slope of the stress strain curve at first loading 3.1.2 stabilized secant modulus of elasticity
EC,S
secant slope of the stress strain curve after three loading cycles 3.1.3 base or gauge length length used as reference base for strain measurement 3.1.4 measuring line straight line laying on the lateral surface of the specimen and parallel to the vertical axis (see Figure 1) SIST EN 12390-13:2014
Key 1 measuring line Figure 1 — Measuring line on cylinder and prismatic specimens 3.2 Symbols and scripts For the purposes of this European Standard, the symbols and scripts in Table 1 apply. Table 1 — Symbols and scripts (1 of 2) Symbol Explanation EC,0
Initial secant modulus of elasticity EC,S Stabilized secant modulus of elasticity ε =Measured strain ∆L =Change in measured length L0
Initial gauge length of instrument L Specimen length d
Specimen diameter or width D Upper sieve size (for definition of aggregates size, see EN 12620) Dmax
Declared value of D of the coarsest fraction of aggregates actually used in the concrete fc Compressive strength of concrete determined by testing companion specimens – cylinders, prisms, cubes or cores – or estimated from non-destructive tests σa =Nominal upper stress = fc / 3 σb Nominal lower stress – arbitrary value between 10 % and 15 % of fc σp Nominal preload stress – arbitrary value between 0,5 MPa and σb εa =Strain along each measuring line at upper stress εb Strain along each measuring line at lower stress εp Strain along each measuring line at preload stress εa, n Average strain at upper stress on loading cycle n
εb, n Average strain at lower stress on loading cycle n
The recommended test specimen shall be cylinders of diameter 150 mm and height 300 mm (reference specimen). Alternatively, other test specimens generally complying with the requirements of EN 12390-1 may be used, provided that the specimen complies with the dimensions and aggregate size to diameter or width stated above. In the case of specimens drilled or cut from a structure, this requirement sometimes cannot be fulfilled; in such cases, this shall be stated in the test report. NOTE The size of the test specimen can have an influence on the result. If relevant, the adjustment of test specimen shall comply with EN 12390-3. Companion specimens should be available for the determination of compressive strength as described in 7.2 and shall be made from the same batch of concrete in the case of cast specimens, or shall be drilled from the same zone in the case of drilled specimens. 6.2 Curing, storage and conditioning Moulded specimens shall be cured or stored in accordance with EN 12390-2, cored specimen in accordance with EN 12504-1. Before testing they shall be maintained at (20 ± 2) °C for sufficient time for strain measuring instruments to be securely fixed but not longer than 24 h out of water. During the time out of water, precautions shall be taken to ensure the specimen remains moist. 7 Method 7.1 Specimen instrumentation and positioning The strain measuring instruments shall be positioned in such a way that the measuring base is at equivalent distance from the end faces of the specimen. At least two strain measuring instruments shall be symmetrically arranged with respect to the central axis of the specimen. The specimen shall be centred on the lower platen. 7.2 Determination of compressive strength The compressive strength of concrete fc shall be determined in accordance with EN 12390-3 on companion specimen(s) preferably having the same size and shape of those specimens used for secant modulus of elasticity determination.
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