DIN EN 14224-2010 Flexible sheets for waterproofing - Waterproofing of concrete bridge decks and other concrete surfaces trafficable by vehicles - Determination of crack bridging a.pdf

1、November 2010 Translation by DIN-Sprachendienst.English price group 9No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC

2、S 91.100.50!$l1“1731498www.din.deDDIN EN 14224Flexible sheets for waterproofing Waterproofing of concrete bridge decks and other concrete surfacestrafficable by vehicles Determination of crack bridging abilityEnglish translation of DIN EN 14224:2010-11Abdichtungsbahnen Abdichtungssysteme fr Betonbrc

3、ken und andere Verkehrsflchen aus Beton Bestimmung der RissberbrckungsfhigkeitEnglische bersetzung von DIN EN 14224:2010-11Feuilles souples dtanchit Systmes dtanchit pour ponts et autres surfaces en bton circulables par lesvhicules Dtermination de laptitude ponter les fissuresTraduction anglaise de

4、DIN EN 14224:2010-11SupersedesDIN EN 14224:2006-03www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1411.10 DIN EN 14224:2010-11 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical

5、Committee CEN/TC 254 “Flexible sheets for waterproofing” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Bauwesen (Building and Civil Engineering Standards Committee), Working Committee NA 005-02-96 AA Abdichtungssysteme auf Beton f

6、r Brcken und andere Verkehrsflchen. Amendments This standard differs from DIN EN 14224:2006-03 as follows: a) a new term “completely broken” (3.4) has been added; b) test specimen type 3 for waterproofing systems including an asphalt layer as waterproofing protection layer and Subclause 4.4.6 “Obser

7、vations after the test: watertightness test” have been added; c) the standard has been editorially revised. Previous editions DIN EN 14224: 2006-03 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14224 May 2010 ICS 91.100.50 Supersedes EN 14224:2005English Version Flexible sheets for waterproof

8、ing - Waterproofing of concrete bridge decks and other concrete surfaces trafficable by vehicles - Determination of crack bridging ability Feuilles souples dtanchit - Systmes dtanchit pour ponts et autres surfaces en bton circulables par les vhicules - Dtermination de laptitude ponter les fissuresAb

9、dichtungsbahnen - Abdichtungssysteme fr Betonbrcken und andere Verkehrsflchen aus Beton - Bestimmung der Rissberbrckungsfhigkeit This European Standard was approved by CEN on 23 April 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for g

10、iving 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 Management Centre or to any CEN member. This European Standard exists in three official

11、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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Bel

12、gium, Bulgaria, Croatia, 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 COM

13、MITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14224:2010: EEN 14224:2010 (E) 2 Con

14、tents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Test method 44.1 Principle 44.2 Apparatus .54.3 Sampling and preparation of test specimens .54.3.1 Sampling .54.3.2 Preparation of test specimens .54.4 Procedure .74.4.1 Number of tests 74.4.2 Preparation for the test

15、.74.4.3 Test temperature 94.4.4 Running of the test 94.4.5 Observations during the test . 104.4.6 Observations after the test: watertightness test . 104.5 Results . 104.5.1 Expression of results . 104.5.2 Precision 104.6 Test report . 10Bibliography . 12DIN EN 14224:2010-11 EN 14224:2010 (E) 3 Forew

16、ord This document (EN 14224:2010) has been prepared by Technical Committee CEN/TC 254 “Flexible sheets for waterproofing”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, a

17、t the latest by November 2010, and conflicting national standards shall be withdrawn at the latest by November 2010. 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

18、any or all such patent rights. This document supersedes EN 14224:2005. 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, Denmar

19、k, 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. DIN EN 14224:2010-11 EN 14224:2010 (E) 4 1 Scope This European

20、Standard describes a test method for determining the crack bridging ability of reinforced bitumen sheets used in waterproofing systems on concrete bridge decks and other areas of concrete trafficable by vehicles. 2 Normative references The following referenced documents are indispensable for the app

21、lication 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 13375:2004, Flexible sheets for waterproofing Waterproofing of concrete bridge decks and other concrete surfac

22、es trafficable by vehicles Specimen preparation EN 13416:2001, Flexible sheets for waterproofing Bitumen, plastic and rubber sheets for roof waterproofing Rules for sampling EN 14695:2010, Flexible sheets for waterproofing Reinforced bitumen sheets for waterproofing of concrete bridge decks and othe

23、r trafficked areas of concrete Definitions and characteristics 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13416:2001, EN 13375:2004, EN 14695:2010 and the following apply. 3.1 crack bridging ability ability of reinforced bitumen sheets to withsta

24、nd movements of the crack of the base specimen without deterioration 3.2 crack width distance between the sides of the crack of the base specimen, measured by monitoring the movement of the base specimen during the test 3.3 nominal curve input of changes as a function of time which the crack width o

25、f the base specimen shall follow during a test 3.4 completely broken disconnection of the reinforced bitumen sheets above the crack of the base specimen into two completely separated parts 4 Test method 4.1 Principle After applying the reinforced bitumen sheet(s), a crack is induced in the base spec

26、imen at the saw-cut. The crack bridging ability of reinforced bitumen sheets is determined by periodically varying the crack width within defined limits. The test can be carried out at different temperatures. DIN EN 14224:2010-11 EN 14224:2010 (E) 5 4.2 Apparatus 4.2.1 Temperature controlled chamber

27、, with an accuracy of 1 C, for the test specimens and the loading parts of the testing apparatus during the test. 4.2.2 Testing apparatus, for generating changes in the crack width, able to control and monitor the crack width of the base specimen during the test. Devices to fix the test specimens on

28、to the testing apparatus shall not influence the sheet(s). 4.2.3 Crack width measuring device, with an accuracy of 0,01 mm, to control and monitor the crack width during the test. 4.3 Sampling and preparation of test specimens 4.3.1 Sampling Samples and test pieces of the reinforced bitumen sheet(s)

29、 shall be taken in accordance with EN 13416. 4.3.2 Preparation of test specimens Test specimens of type 1 and 3 according to EN 13375:2004 with the dimensions of (400 5) mm (200 2) mm 40 mm shall be used (see Figure 1). Test specimen preparation is specified as well as specifications for concrete ba

30、se specimen in EN 13375. Test specimens of type 1 are used for waterproofing systems not including an asphalt layer as protection layer. Test specimens of type 3 are used for waterproofing systems including an asphalt layer as protection layer which has the additional function as a waterproofing lay

31、er. If the reinforced bitumen sheets have anisotropic properties, the test specimens shall be prepared in such a manner that the direction with lower elongation is tested. NOTE The anisotropic behaviour of reinforced bitumen sheets can be observed by the behaviour during the tensile test according t

32、o EN 12311-1 if the elongation is different between the two principle directions of the sheet. DIN EN 14224:2010-11 EN 14224:2010 (E) 6 a) Waterproofing system not including an asphalt layer as protection layer b) Waterproofing system including an asphalt layer as protection layer Key 1 Base specime

33、n 2 Waterproofing sheet(s) 3 Asphalt layer 4 Waterproofing system T1 Specimen type 1 T2 Specimen type 2 T3 Specimen type 3 Figure 1 Cross sections through specimens For test specimens of type 1 a saw-cut shall be made without damage to the reinforced bitumen sheet(s) in the underside of the base spe

34、cimens as shown in Figure 2. Dimensions in millimetres Key 1 Base specimen 2 Waterproofing layer 3 Induced crack 4 Saw-cut Figure 2 Test specimen of type 1 prepared for the test DIN EN 14224:2010-11 EN 14224:2010 (E) 7 For test specimens of type 3 both the base specimen and the asphalt protection la

35、yer shall be provided with a saw-cut to create the predetermined breaking point (see Figure 3). Dimensions in millimetres Key 1 Base specimen 2 Waterproofing layer 3 Induced crack 4 Saw-cut 5 Asphalt layer (protection layer) Figure 3 Test specimen of type 3 prepared for the test 4.4 Procedure 4.4.1

36、Number of tests Three tests shall be carried out for each temperature which is intended to be applied. 4.4.2 Preparation for the test The crack in the base specimen above the saw cut, or the crack between the saw cuts when the protection layer is present, is produced mechanically in the testing appa

37、ratus, see 4.2.2, at the test temperature by introducing a controlled force in such a way that no bending in the test specimen occurs. The crack width shall not exceed 0,10 mm during this procedure. The test specimen shall be fixed in the testing apparatus in such a way that the relative movement of

38、 the test specimen and the apparatus is negligible. The method of attachment in the apparatus shall ensure that the applied force acts in the plane of the tested reinforced bitumen sheet(s). Bending shall be prevented during testing. An example for a loading device is given in Figure 4. DIN EN 14224

39、:2010-11 EN 14224:2010 (E) 8 Key 1 End plate 2 Waterproofing sheet 3 Screw hole (for transportation) 4 Position sensor 5 Base specimen 6 Traverse 7 Load cell 8 Fixed part 9 Movable part 10 Track 11 Adhesive 12 Position sensor 13 Test specimen (fixed part) 14 Steel mounting plate 15 Test specimen (mo

40、vable part) Figure 4 Example of loading device The test equipment shall ensure that the movement of the crack of the base specimen lies within the given limits (change in the crack width) and that fretting and shearing of the crack sides are avoided during the test. DIN EN 14224:2010-11 EN 14224:201

41、0 (E) 9 Suitable devices for measuring the crack width (see 4.2), accurate to 0,01 mm, shall be mounted on the test specimen on both sides of the crack. These measuring devices shall control the change of the crack width of the base specimen. 4.4.3 Test temperature The test temperature is chosen acc

42、ording to EN 14695 at one of the following temperatures: - 30 C, - 20 C, - 10 C or 0 C with an accuracy of 1 C. Before testing, the test specimens shall be conditioned at the test temperature for at least 4 h and not longer than 24 h. 4.4.4 Running of the test The crack shall be opened to a total wi

43、dth of 0,20 mm (mean crack width wm) including the initial crack width after cracking of the test specimen within 60 s. The cyclic change of the crack width shall commence without time interruption following the nominal curve, which is calculated using Equation (1). () = tTwwtwm2sin2(1) Figure 5 dem

44、onstrates the crack width w(t) depending on the time t. Y021304Xw(t)Tw/2Key w Amplitude T Duration of one cycle 1 Mean crack width wm 2 Minimum crack width wmin 3 Maximum crack width wmax 4 Commencement of crack cycling X Time t Y Crack width w(t) Figure 5 Nominal curve The test shall be carried out

45、 with the frequency f = 1 Hz (T = 1 s), the half crack amplitude w/2 = (0,12 0,02) mm and the mean crack width wm= (0,20 0,02) mm. The test shall be carried out until 10 000 test cycles have been reached. It shall be stopped if the reinforced bitumen sheet(s) has (have) completely broken before reac

46、hing 10 000 test cycles. At the end of the test the maximum crack width wmax(0,32 0,02) mm shall be fixated before final observations are made. DIN EN 14224:2010-11 EN 14224:2010 (E) 10 4.4.5 Observations during the test During the test, the test specimen shall be observed at regular intervals. Each

47、 event, which could be of significance for the interpretation or evaluation of the crack bridging ability, shall be recorded. NOTE 1 Such events could be cracks on the underside, debonding, delamination, tears, ripple, reduction of thickness in the crack zone, etc. These events may be recorded by vi

48、deo, photograph, sketch or other methods. NOTE 2 The number of test cycles may be recorded if the reinforced bitumen sheet(s) has (have) completely broken (see 4.4.4) before reaching 10 000 test cycles. 4.4.6 Observations after the test: watertightness test When the crack width variation cycles have

49、 been completed, the sample shall be reconditioned to ambient temperature at maximum crack width (wmax). A metal or glass cylinder at least 100 mm in diameter and at least 150 mm high shall be centred on the reinforced bitumen sheet(s) above the crack of the base specimen (when testing without asphalt layer) or the asphalt layer (when testing with an asphalt layer). The gaps between the surface and the cylinder shall b