BS-EN-12504-4-2004.pdf
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1、BRITISH STANDARD BS EN 12504-4:2004 Testing concrete Part 4: Determination of ultrasonic pulse velocity The European Standard EN 12504-4:2004 has the status of a British Standard ICS 91.100.30 ? BS EN 12504-4:2004 This British Standard was published under the authority of the Standards Policy and St
2、rategy Committee on 13 October 2004 BSI 13 October 2004 ISBN 0 580 44584 4 National foreword This British Standard is the official English language version of EN 12504-4:2004. It supersedes BS 1881-203:1986 which is withdrawn. The UK participation in its preparation was entrusted by Technical Commit
3、tee B/517, Concrete, to Subcommittee B/517/1, Concrete production and testing, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publi
4、cations referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the nec
5、essary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the int
6、erpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 14, an inside back cover and a
7、 back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12504-4 August 2004 ICS 91.100.30 English version Testing concrete - Part 4: De
8、termination of ultrasonic pulse velocity Essais pour bton dans les structures - Partie 4: Determination de la vitesse de propagation du son Prfung von Beton - Teil 4: Bestimmung der Ultraschallgeschwindigkeit This European Standard was approved by CEN on 26 February 2004. CEN members are bound to co
9、mply 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 Central S
10、ecretariat 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 Central Secretariat has the same status as the o
11、fficial versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, S
12、weden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Membe
13、rs. Ref. No. EN 12504-4:2004: E EN 12504-4:2004 (E) 2 Contents page Foreword3 1 Scope 4 2 Normative references4 3 Terms and definitions .4 4 Method4 5 Apparatus .4 5.1 General4 5.2 Performance requirements.5 5.3 Transducers .5 5.4 Apparatus for determination of arrival time of the pulse 5 6 Procedur
14、es.5 6.1 Determination of Pulse Velocity.5 7 Expression of result 7 8 Test report7 9 Precision.8 Annex A (informative) Determination of pulse velocity indirect transmission 9 Annex B (informative) Factors influencing pulse velocity measurements .10 B.1 General10 B.2 Moisture content10 B.3 Temperatur
15、e of the concrete10 B.4 Path length .10 B.5 Shape and size of specimen.10 B.6 Effect of reinforcing bars11 B.7 Cracks and voids.11 Annex C (informative) Correlation of pulse velocity and strength.12 C.1 General12 C.2 Correlation using moulded specimens .12 C.3 Correlation by tests on cores.12 C.4 Co
16、rrelation with the strength of precast units13 Bibliography14 EN 12504-4:2004 (E) 3 Foreword This document (EN 12504-4:2004) 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
17、of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2005, and conflicting national standards shall be withdrawn at the latest by February 2005. A draft standard was submitted in 1998 to CEN enquiry as prEN 13296. It was one of a series of i
18、ndividually numbered test methods for fresh or hardened concrete. For convenience it has now been decided to combine these separate draft standards into three new standards with separate Parts for each method, as follows: Testing fresh concrete (EN 12350) Testing hardened concrete (EN 12390) Testing
19、 concrete in structures (EN 12504) This series, EN 12504, includes the following Parts where the brackets give the numbers under which particular test methods were submitted to CEN enquiry: EN 12504, Testing concrete in structures Part 1: Cored specimens Testing, examining and testing in compression
20、 (former prEN 12504:1996) Part 2: Non-destructive testing Determination of rebound number (former prEN 12398:1996) Part 3: Determination of pull-out force (former prEN 12399:1996) Part 4: Determination of ultrasonic pulse velocity (former prEN 12396:1998) This European Standard is based on ISO/DIS 8
21、047 “Concrete hardened Determination of ultrasonic pulse velocity“. It is recognised that the ultrasonic pulse velocity determined using this standard is a convention in as much that the path length over which the pulse travels may not strictly be known. The measurement of pulse velocity can be used
22、 for the determination of the uniformity of concrete, the presence of cracks or voids, changes in properties with time and in the determination of dynamic physical properties. These subjects were considered to be outside the scope of this standard, but some information is given in Annex B and more i
23、nformation can be found in the technical literature. The measurement may also be used to estimate the strength of in-situ concrete elements or specimens. However, it is not intended as an alternative to the direct measurement of the compressive strength of concrete. According to the CEN/CENELEC Inte
24、rnal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Nethe
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