1、STD.BSI BS EN L35b2-ENGL 2000 Lb24hb 0874CL 942 BRITISH STANDARD Geotextiles and geotextile-related products - Determination of resistance to penetration by water (hydrostatic pressure test) The European standard EN 135622000 has the status of a British Standard ICs 59.080.70 3s EN 13562:2000 NO COP
2、YING WITHOUT BSI PERMISSION EXCEPT AS PEI them in the UK. A list of organizations represented on this committee can be obtained on request to its secrem. Cross-references The British Standards which implement intedonal or European publications referred to in this document may be found in the BSI Sta
3、ndards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible
4、 for their correct application. Compliance with a British Standard does not of itself confer immunity from legai obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright notic
5、e displayed in this document indicates when the document was last issued ISBN O 580 36618 9 STD-BSI BS EN 13562-ENGL 2000 111 1b24bb9 0874593 715 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13562 March 2000 ICs 59.080.70 English version Geotextiles and geotextile-related products - Determin
6、ation of resistance to penetration by water (hydrostatic pressure test) Gotextiles et produits apparents - Dtermination de la rsistance la pntration deau (essai sous pression hydrostatique) Geotextilien und geotextilverwandte Produkte - Bestimmung des Widerstandes gegen Wasserdurchtritt (Wassersaule
7、-Prfverfahren) This European Standard was approved by CEN on 21 February 2000. CEN members are bound to comply with the CENEENELEC 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 bibl
8、iographical references concerning such national standards may be obtained on application to the Central Secretariat 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 o
9、f a CEN member into its own language and notified to the Central Secretariat has the Same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, N
10、orway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMlTEB FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Central Secretariat: rue de Stassart, 36 8-1050 Brussels Q 2000 CEN All rights of exploitation in any form and by any means reserved w
11、orldwide for CEN national Members. Ref. No. EN 13562:2000 E STD=BSI BS EN 13562-ENGL 2000 Lb24bb9 0874594 b51 Page 2 EN 13562:2000 Foreword This European Standard has been prepared by Technical Committee CEN/TC 189 “Geotextiles and geotextile-related products“, the secretariat of which is held by IB
12、N. 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 2000, and conflicting national standards shall be withdrawn at the latest by September 2000. According to the CENKENELEC Internal Regul
13、ations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the U
14、nited Kingdom. STD-BSI BS EN 13562-ENGL 2000 m 1624669 0874595 598 W Page 3 EN 13562:2000 1 Scope This European Standard specifies a hydrostatic pressure method for determining the resistance of dry geotextiles to penetration by water. 2 Normative references This European standard incorporates by da
15、ted or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European standard
16、 only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). IS0 554 EN 963 Standard atmospheres for conditioning and/or testing - Specif ications Geotextiles and geotextile-related products - Samplin
17、g and preparation of test specimens 3 Principle The hydrostatic pressure supported by a dry geotextile is a measure of the opposition to the passage of water through the geotextile. A specimen is subjected to a steadily increasing pressure of water on one face, under standard conditions, until penet
18、ration occurs. The pressure, at which water penetrates the geotextile, is noted. The water pressure may be applied from below or from above the specimen The chosen alternative should be stated in the test report. The result is immediately relevant to the behaviour of geotextiles which are subjected
19、to water pressure for short or moderate periods of time. The method is primarily intended for low permeability geotextiles. 4 Apparatus 4.1 The apparatus used for the test should be designed to comply with the following conditions. 4.1.1 It should be possible to clamp the circular specimen of geotex
20、tile in such a way that: - it is horizontal and not bulging; - a circular area of the specimen of (1 O0 - no leakage of water takes place at the clamps during the test; - the specimen does not slip in the clamps; - any tendency for penetration to occur at the clamped edge of the specimen is minimise
21、d. - STDIBSI BS EN 135bZ-ENGL 2000 I Lb24bb9 0874596 424 Page 4 EN 13562:2000 NOTE: With some form of apparatus, it has been found that correct conditions of clamping can be attained if the clamps are faced with suitable rubber. Two examples of apparatus are shown in figure 1. 4.1.2 The water in con
22、tact with the test specimen shall be distilled or fully deionized water maintained at (20 k 2) OC. If the apparatus used is of the type in which the water is contained in the testing head and rises to come into contact with the specimen, the surface of the water in the testing head may be cleaned in
23、 one of the following ways, stated in order of preference: a) empty the testing head and refill with sufficient freshly distilled water; b) allow the distilled water to overflow from the testing head so that the surface of the water is cleared and sweep the surface of the water with a glass slide fr
24、eshly coated with paraffine wax; c) allow the distilled water to overflow from the testing head so that the surface of the water is cleared. 4.1.3 The rate of increase of water pressure shall be (1 O0 k 5) mm/min 4.1.4 It is necessary to provide a manometer of suitable range, .e. a manometer which p
25、rovides for water pressures up to 500 mm. The manometer connected to the testing head shall allow water pressures to be read to an accuracy of at least 1 mm. 5 Conditioning Conditioning and testing shall be carried out at (20 k 2) OC and (65 f 5) % relative humidity, in accordance with IS0 554. 6 Te
26、st specimens 6.1 Handling The sample shall not be folded and shall be handled as infrequently as possible to avoid disturbance in its structure. The sample shall be kept in a flat position without any load. 6.2 Sampling Take test specimens from the product sample in accordance with EN 963. STDaBSI B
27、S EN 335bZ-ENGL 2000 I 3b24bb7 0874577 360 = Page 5 EN 13562:2000 6.3 Number and dimensions Cut 10 specimens, five to be tested on each face. Identification of face orientation in relation to roll configuration or manufacturing process shall be provided and marked on the sample. NOTE: Where it is ne
28、cessary to determine the results to within a given confidence interval of the mean, the number of test specimens should be determined in accordance with IS0 2854. 6.4 Condition of specimens The specimens shall be clean, free from surface deposits and without visible damage or folding marks. 7 Proced
29、ure 7.1 Provide freshly distilled water for each specimen tested. 7.2 Wipe all water from clamping surfaces. Clamp the conditioned specimen in the test head so that the face of the geotextile will be in contact with the water. The clamping shall be carried out in such a way that water will not be fo
30、rced through the specimen prior to the start of the test. 7.3 Subject the specimen immediately to increasing water pressure. Watch continuously for evidence of penetration by water. 7.4 Record the pressure as conventional millimetres of water, at which water first appears in continuous droplet form
31、through the specimen. 7.5 Continue to increase the water pressure and record the maximum water pressure achieved. Do not take into account very fine droplets which do not grow after being formed. Note whether the penetration of water occurs at the edge of the clamp and reject as unsatisfactory any t
32、est in which such penetration occurs at a pressure less than the lowest pressure recorded for the other specimens from the same sample. 7.6 Test further specimens until the required number of satisfactory results is obtained. 8 Calculation and expression of test results Calculate the mean of the pre
33、ssures recorded for the specimens tested according to clause 7. Report the individual results and the mean result in conventional millimetres of water pressure. Page 6 EN 13562:2000 9 Testreport The test report shall include the following information: a) reference to this standard; b) the atmosphere
34、 used (standard atmosphere or other); c) the temperature of the water; d) whether the water pressure was applied from below or from above the test specimen and an illustrative example of the apparatus used (if required); e) the rate of increase of water pressure; f) the face of the geotextile tested
35、; g) any variation in size or shape of the test specimen; h) the individual results and their mean. STD-BSI BS EN 135bZ-ENGL 2000 = Lb24bb3 0874599 133 E Page 7 EN 13562:2000 1 2 3 4 5 6 7 9 10 11 a Water above the test specimen Specimen Clamping ring Transparent cylinder Water inlet Water level at
36、penetration Water droplet Manometer Measuring scale (in mm) Viewing position Mirror at 45“ Collection pan Water below the test specimen Figure 1 - Examples of a test apparatus Page 8 EN 13562:2000 Bibliograpy IS0 2854 Statistical interpretation of data - Techniques of estimation and tests relating t
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