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1、BRITISH STANDARD BS EN 12691:2006 Flexible sheets for waterproofing Bitumen, plastic and rubber sheets for roof waterproofing Determination of resistance to impact The European Standard EN 12691:2006 has the status of a British Standard ICS 91.100.50 BS EN 12691:2006 This British Standard was publis
2、hed under the authority of the Standards Policy and Strategy Committee on 31 October 2006 BSI 2006 ISBN 0 580 49370 9 National foreword This British Standard was published by BSI. It is the UK implementation of EN 12691:2006. It supersedes BS EN 12691:2001 which is withdrawn. The UK participation in
3、 its preparation was entrusted to Technical Committee B/546, Flexible sheets for waterproofing and water vapour control. A list of organizations represented on B/546 can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract.
4、Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments W - - - - - - - - - 777 - 777 - - - 7-8- 7 7- - - - $ - - - -A - - - - - - - - - - - - - - - - - - - - - - -
5、- - - - - - - - - - - W W D - - w - - - - EN 12691:2006 (E) 2 Contents Page Foreword3 1 Scope 5 2 Normative references5 3 Terms and definitions .5 4 Principle5 5 Apparatus .5 6 Sampling.10 7 Preparation of test specimen .10 8 Procedure .10 9 Expression of results 11 10 Test report 11 EN 12691:2006 (
6、E) 3 Foreword This European Standard (EN 12691:2006) 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 o
7、r by endorsement, at the latest by September 2006, and conflicting national standards shall be withdrawn at the latest by September 2006. This European Standard supersedes EN 12691:2001. In order to receive more precise test results a revision of the test procedure was necessary. According to the CE
8、N/CENELEC Internal 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
9、, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 12691:2006 (E) 4 Introduction This European Standard is intended for characterisation and classification of bitumen, plastic and rubber sheets as manufactured or supplied be
10、fore use. This test method relates exclusively to products or to their components where appropriate, and not to waterproofing membrane systems composed of such products and installed in the works. This test is intended to be used in conjunction with European Standards “Definitions and characteristic
11、s” for bitumen sheets and for plastic and rubber sheets for roof waterproofing. EN 12691:2006 (E) 5 1 Scope This European Standard specifies a test for puncture by impact on sheets for roof waterproofing. Mechanical stress on waterproofing sheets ranges from static long-term loads to dynamic short-t
12、erm loads. This method represents the dynamic category of load where puncture may be caused by impact. This European Standard may also be applied for other purposes of waterproofing. 2 Normative references The following referenced documents are indispensable for the application of this European Stan
13、dard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 13163:2001, Thermal insulation products for buildings Factory made products of expanded polystyrene (EPS) Specification EN 13416:20
14、01, Flexible sheets for waterproofing Bitumen, plastic and rubber sheets for roof waterproofing Rules for sampling 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 top surface upper side of the sheet as used in-situ. It is usually the
15、 inside of the roll. 4 Principle The test specimen is struck on the top surface of the sheet by a free falling drop mass with a puncturing tool. The test specimen is lying on a hard support (method A) and if required additionally on a soft support (method B). After the impact the test specimen is te
16、sted for leakage. 5 Apparatus The testing is performed using a test apparatus, which enables vertically falling of the drop mass and consists of the parts indicated in 5.1 to 5.7 and can be used with a hard support (method A) or a soft support (method B). 5.1 Stand The stand can be constructed for f
17、ree falling of the drop mass or optionally for rail guided falling and should be at least as long (high) as the maximum drop height to be tested (for most practical purposes 2 m will be sufficient). An example for a guide rail for the falling drop mass is given in Figure 1. EN 12691:2006 (E) 6 Dimen
18、sions in millimetres Key 1 Guide rail (slitted square tube e.g.) 2 Drop mass d Diameter between 25 mm to 30 mm g Gap between 0,5 mm to 1 mm Figure 1 Guide rail and drop mass / cross section (example) 5.2 Drop mass and puncturing tool Cylindrical steel drop mass with a fixed puncturing tool. The weig
19、ht of the drop mass including the puncturing tool shall be (500 5) g; the diameter should be preferable between 25 mm to 30 mm. The puncturing tool shall be made according to the following specifications: formed in steel material and firmly fixed to the drop mass; hardened to 50 HRC; spherical forme
20、d with a diameter of (12,7 0,1) mm; shaft diameter of (10 0,1) mm; shaft length about 40 mm. See example in Figure 2. 5.3 Release mechanism Release mechanism (trigger) with a setting device for variable drop height from 200 mm to at least 2 000 mm in increments of: 50 mm between 200 mm and 500 mm; 1
21、00 mm between 500 mm and 1 000 mm; 250 mm for drop heights above 1 000 mm. The drop height is measured from the bottom of the puncturing tool to the surface of the test specimen. EN 12691:2006 (E) 7 Dimensions in millimetres Key 1 Release mechanism 2 Drop mass 3 Puncturing tool a Length according to
22、 total weight of (500 5) g b Action: push to release Figure 2 Drop mass with puncturing tool and release (for guide rail) (example) 5.4 Ballast ring Ballast ring in steel with mass of at least 2 000 g with inner diameter of approximately 100 mm (see Figure 3). 5.5 Support 5.5.1 Methods A and B a) Fo
23、r all products: substrate Al (see 5.5.2); b) For different products (only if required): substrate EPS (see 5.5.3). Type of substrate has to be indicated with the test results. EN 12691:2006 (E) 8 5.5.2 Aluminium plate (method A) Aluminium plate of the quality AlMgSilF32 with the size of about 300 mm
24、 x 300 mm x 3 mm. 5.5.3 Standard expanded polystyrene panel (method B) Standard expanded polystyrene panel with a cut surface and size of about 300 mm x 300 mm x 50 mm; (EPS-Quality CS(10)150, see EN 13163). 5.6 Counter mass Counter mass of minimum 400 mm x 400 mm x 50 mm concrete slab with an even
25、and unmarked steel support plate of about 300 mm x 300 mm x 10 mm fixed to the surface of the concrete slab (see Figure 3). EN 12691:2006 (E) 9 Dimensions in millimetres a) Method A b) Method B Key 1 Ballast ring 2 Test specimen 3 Support (aluminium plate for method A or polystyrene for method B) 4
26、Steel plate (h = 10 mm) with even and unmarked surface 5 Concrete counter mass Figure 3 Counter mass and ballast ring 5.7 Puncture testing device Vacuum or pressure device for the verification of a possible puncture (see example in Figure 4). EN 12691:2006 (E) 10 Dimensions in millimetres Key 1 Glas
27、s plate 2 Support 3 Air permeable layer 4 Test specimen 5 Transparent plastic tube (perforated) 6 Gasket Figure 4 Vacuum device (example) 6 Sampling Samples shall be taken in accordance with EN 13416. 7 Preparation of test specimen A minimum of five test specimens of at least 150 mm x 150 mm should
28、be taken from different positions across the width and the length of the roll excluding 100 mm at the edges. The test specimen shall be cleaned on both sides with filter paper to remove adhered solid remnants and surface dirt. The test specimens shall be conditioned for at least 24 h at the specifie
29、d test condition. 8 Procedure Testing is carried out at a temperature of (23 2) C. For testing, the test specimens shall be placed on the support with the top surface upwards and pressed down by the ballast ring. The test is performed by releasing the drop mass from the drop height to be tested. The
30、 puncturing tool shall hit the centre of the test specimen in the middle of the ballast ring. Preliminary tests can be made to indicate a drop height around which perforation could be expected by increasing/reducing the drop height until perforation is noticed/avoided (increments of drop height see
31、5.3). EN 12691:2006 (E) 11 For every test a new test specimen shall be used and the support shall not be exposed to impact at the same point more than once. That requires for each impact for: method A: to move the aluminium plate for about 25 mm; method B: to move the polystyrene panel for about 50
32、mm. The main test with one impact on five different test specimens shall not result in more than one puncture. If more than one puncture occurs, the drop height shall be reduced until further impact on five different test specimens does not result in more than one puncture (increments of drop height
33、 see 5.3). The test specimens are examined for possible puncture within 5 min after the impact test by coating the surface of the impact area with a soap solution and applying a pressure difference of 15 kPa (0,15 bar) to the zone of impact by means of a vacuum or pressure device with the positive p
34、ressure at the side subjected to impact. If after 60 s no air bubbles are visible, the test specimen is considered to have no leakage and is not punctured. 9 Expression of results The resistance to impact is expressed as the drop height of the puncturing tool in millimetres, which has not caused lea
35、kage of the flexible sheet for roof waterproofing in four out of five test specimens. Additionally the type of the test method (A or B) is to indicate. 10 Test report The test report shall include at least the following information: all details necessary to identify the product tested; reference to
36、this European Standard, i.e. EN 12691 and any deviation from it; information on sampling in accordance with Clause 6; information on the preparation of the test specimens in accordance with Clause 7; information on the procedure in accordance with Clause 8 and indicating the method used (A or B); th
37、e test results in accordance with Clause 9; date of the test. BS EN 12691:2006 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the intern
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