SIST EN 12350-3:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Preskušanje svežega betona - 3. del: Vebe preskusPrüfung von Frischbeton - Teil 3: Vebe-PrüfungEssais pour béton frais - Partie 3: Essai VébéTesting fresh concrete - Part 3: Vebe test91.100.30Beton in betonski izdelkiConcrete and concrete productsICS:Ta slovenski standard je istoveten z:EN 12350-3:2009SIST EN 12350-3:2009en,fr01-julij-2009SIST EN 12350-3:2009SLOVENSKI
STANDARDSIST EN 12350-3:20011DGRPHãþD



SIST EN 12350-3:2009



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12350-3March 2009ICS 91.100.30Supersedes EN 12350-3:1999
English VersionTesting fresh concrete - Part 3: Vebe testEssais pour béton frais - Partie 3: Essai VébéPrüfung von Frischbeton - Teil 3: Vebe-PrüfungThis 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 bibliographical 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 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, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12350-3:2009: ESIST EN 12350-3:2009



EN 12350-3:2009 (E) 2 Contents Page Foreword .31Scope .52Normative references .53Principle .54Apparatus .55Sampling .66Procedure .67Test result .78Test report .79Precision .8 SIST EN 12350-3:2009



EN 12350-3:2009 (E) 3 Foreword This document (EN 12350-3:2009) 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 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 [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12350-3:1999. 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 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 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 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 the skin immediately. SIST EN 12350-3:2009



EN 12350-3:2009 (E) 4 The following amendments have been made to the 1999-10 edition of this standard:  editorial revision  time allowed for raising the mould changed from between 5 s and 10 s to between 2 s and 5 s. 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. SIST EN 12350-3:2009



EN 12350-3:2009 (E) 5
1 Scope This European Standard specifies a method for determining the consistency of fresh concrete by means of the Vebe time. It is not applicable to concrete of which the maximum size of aggregate exceeds 63 mm. If the Vebe time is less than 5 s or more than 30 s, the concrete has a consistency for which the Vebe test is unsuitable. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 12350-1 Testing fresh concrete — Part 1: Sampling 3 Principle The fresh concrete is compacted into a slump mould. The mould is lifted clear of the concrete and a transparent disc is swung over the top of the concrete and carefully lowered until it comes in contact with the concrete. The slump of the concrete is recorded. The vibrating table is started and the time taken for the lower surface of the transparent disc to be fully in contact with the grout (the Vebe time), is measured. 4 Apparatus 4.1 Vebe meter (Consistometer) 4.1.1 Container, made of metal not readily attacked by cement paste, cylindrical in shape (A), having an internal diameter of (240 ± 5) mm and a height of (200 ± 2) mm. The thickness of the wall shall be approximately 3 mm and that of the base approximately 7,5 mm. The container shall be watertight and of sufficient rigidity to retain its shape under rough usage. It shall be fitted with handles and brackets, the latter enabling it to be securely clamped to the top of the vibrating table (G) (see 4.1.4) by means of wing nuts (H). 4.1.2 M
...