1、BS EN12390-8:2009ICS 91.100.30,NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDTesting hardenedconcretePart 8: Depth of penetration of waterunder pressureThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 May
2、 2009 BSI 2009ISBN 978 0 580 58800 6Amendments/corrigenda issued since publicationDate CommentsBS EN 12390-8:2009National forewordThis British Standard is the UK implementation of EN 12390-8:2009. Itsupersedes BS EN 12390-8:2000 which is withdrawn.The UK participation in its preparation was entruste
3、d to TechnicalCommittee B/517/1, Concrete production and testing.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.
4、Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 12390-8:2009EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 12390-8February 2009ICS 91.100.30 Supersedes EN 12390-8:2000 English VersionTesting hardened concrete - Part 8: Depth of penetration ofwater under press
5、ureEssai pour bton durci - Partie 8: Profondeur de pntrationdeau sous pressionPrfung von Festbeton - Teil 8: Wassereindringtiefe unterDruckThis European Standard was approved by CEN on 27 December 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the cond
6、itions 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
7、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 Austri
8、a, 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
9、 FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12390-8:2009: EBS EN 12390-8:2009EN 12390-8:200
10、9 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Principle 4 4 Apparatus .4 5 Specimen 6 6 Procedure .6 7 Test result .6 8 Test report 6 9 Precision .7 BS EN 12390-8:2009EN 12390-8:2009 (E) 3 Foreword This document (EN 12390-8:2009) has been prepared by Technical Committee CEN/T
11、C 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 August 2009, and conflicting national standards shall be withdrawn a
12、t the latest by August 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 12390-8:2000. The standard ha
13、s been restricted to tests on specimens cured in water. This standard is one of a series concerned with testing concrete. The series EN 12390 includes the following parts: EN 12390 Testing hardened concrete Part 1: Shape, dimensions and other requirements for specimens and moulds; Part 2: Making and
14、 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: De
15、pth of penetration of water under pressure. The following amendments have been made to the 2000-10 edition of this standard: editorial revision According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Stan
16、dard: 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.
17、 BS EN 12390-8:2009EN 12390-8:2009 (E) 4 1 Scope This European Standard specifies a method for determining the depth of penetration of water under pressure in hardened concrete which has been water cured. 2 Normative references The following referenced documents are indispensable for the application
18、 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 12390-2, Testing hardened concrete Part 2: Making and curing specimens for strength tests 3 Principle Water is applied
19、 under pressure to the surface of hardened concrete. The specimen is then split and the depth of penetration of the waterfront is measured. 4 Apparatus 4.1 Testing equipment The test specimen, of given dimensions, shall be placed in any suitable equipment in such a manner that the water pressure can
20、 act on the test area and the pressure applied can be continuously indicated. An example of a test arrangement is shown in Figure 1. NOTE 1 It is preferable that the apparatus should allow the other surfaces of the test specimen to be observed. NOTE 2 The water pressure may be applied to the surface
21、 of the test specimen either from the bottom, or the top. A watertight seal shall be provided, made of rubber or other similar material. The dimensions of a test area shall be approximately half of the length of the edge or diameter of the test surface. BS EN 12390-8:2009EN 12390-8:2009 (E) 5 Dimens
22、ions in milimetres Key 1 Packing piece 2 Sealing ring 3 Screwed on plate 4 Screw-threaded rod 5 Water under pressure 6 Screwed on plate Figure 1 Example of test arrangement BS EN 12390-8:2009EN 12390-8:2009 (E) 6 5 Specimen The specimen shall be cubic, cylindrical or prismatic with the minimum dimen
23、sion of the surface of the specimen to be tested not less than 150 mm and no other dimension less than 100 mm. 6 Procedure 6.1 Preparation of the test specimen Immediately after the specimen is de-moulded, roughen the surface to be exposed to water pressure, with a wire brush and cure the specimen u
24、nder water in accordance with the procedures given in EN 12390-2. 6.2 Application of water pressure The test shall be started when the specimen is at least 28 days old. Do not apply the water pressure to a trowelled surface of a specimen. Place the specimen in the apparatus and apply a water pressur
25、e of (500 50) kPa for (72 2) h. During the test, periodically observe the appearance of the surfaces of the test specimen not exposed to the water pressure to note the presence of water. If leakage is observed then consider the validity of the result and record the fact. NOTE The use of tap water is
26、 satisfactory. 6.3 Examination of specimen After the pressure has been applied for the specified time, remove the specimen from the apparatus. Wipe the face on which the water pressure was applied to remove excess water. Split the specimen in half, perpendicularly to the face on which the water pres
27、sure was applied. When splitting the specimen, and during the examination, place the face of the specimen exposed to the water pressure on the bottom. As soon as the split face has dried to such an extent that the water penetration front can be clearly seen, mark the water front on the specimen. Mea
28、sure the maximum depth of penetration under the test area and record it to the nearest mm. 7 Test result The maximum depth of penetration, expressed in mm, is the test result. 8 Test report The report shall include: a) identification of the test specimen; b) date of start of the test; c) description
29、 of the specimen (shape and dimensions); d) direction of application of water pressure with respect to the casting direction; e) maximum depth of penetration, in mm; f) any leakage and consideration of the validity of the result; (if appropriate) g) any deviation from the standard test method; BS EN
30、 12390-8:2009EN 12390-8:2009 (E) 7 h) a declaration by the person technically responsible for the test that it was carried out in accordance with this document, except as noted in item g). 9 Precision There is no precision data available. BS EN12390-8:2009BSI GroupHeadquarters 389Chiswick High Road,
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