1、Adhesives Test method for adhesives for floor and wall coverings Shear creep testBS EN 1902:2015Incorporating corrigendum .BSDI2017BSI Standards PublicationBS EN 1902:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 1902:2015. It supersedes BS EN 1902:1999 w
2、hich is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/52, Adhesives.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract.
3、Users are responsible for its correct application. The British Standards Institution 2017. Published by BSI Standards Limited 2017ISBN 978 0 580 97676 6ICS 83.180Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority o
4、f the Standards Policy and Strategy Committee on 30 April 2015.Amendments/corrigenda issued since publicationDate Text affected.BSDI2017 Implementation of CEN Correction Notice 27 May 2015: clause 6.4 correctedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1902 April 2015 ICS 83.180 Supersedes
5、 EN 1902:1999English Version Adhesives - Test method for adhesives for floor and wall coverings - Shear creep test Adhsifs - Mthodes dessai des adhsifs pour revtements muraux et de sol - Essai de fluage sous contrainte de cisaillement Klebstoffe - Prfverfahren fr Klebstoffe fr Boden- und Wandbelge -
6、 Zeitstand-Scherversuch This European Standard was approved by CEN on 16 February 2015. CEN members are bound to comply 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 list
7、s and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre 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
8、the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yug
9、oslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPE
10、N DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1902:2015 EEN 1902:2015 (E) 2 Contents Page Foreword 3 1 Scope
11、4 2 Normative references 4 3 Terms and definitions .4 4 Principle 4 5 Apparatus and materials .4 6 Preparation of test specimens .8 6.1 Cleaning 8 6.2 Sampling of adhesive 8 6.3 Conditioning of materials .8 6.3.1 Adhesive and floor and wall coverings .8 6.3.2 Fibre cement substrate .8 6.4 Applicatio
12、n of adhesive 8 6.5 Bonding of the test covering 9 6.6 Conditioning of test specimens .9 7 Test procedure and evaluation of test results 9 8 Test report . 10 BS EN 1902:2015EN 1902:2015 (E)EN 1902:2015 (E) 3 Foreword This document (EN 1902:2015) has been prepared by Technical Committee CEN/TC 193 “A
13、dhesives”, the secretariat of which is held by AENOR. 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 October 2015 and conflicting national standards shall be withdrawn at the latest by October 20
14、15. 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 1902:1999. The main changes in respect to EN 1902:1999
15、 are the following: the change of the roller dimensions; the change of temperature of conditioning of a substrate. SAFETY PRECAUTIONS Persons using this document should be familiar with the normal laboratory practice, if applicable. This document does not purport to address all of the safety problem
16、s, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any regulatory conditions. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries ar
17、e bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Po
18、rtugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 1902:2015EN 1902:2015 (E)EN 1902:2015 (E) 4 1 Scope This European Standard specifies a test method that gives an assessment of adhesion under long-term shear stress after bonding floor or wall cover
19、ings to a given substrate. The term “wall covering” does not include any type of wallpaper. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies
20、. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 923:2005+A1:2008, Adhesives - Terms and definitions EN 1067, Adhesives - Examination and preparation of samples for testing EN ISO 15605, Adhesives - Sampling (ISO 15605) EN ISO 10365, Adhe
21、sives - Designation of main failure patterns (ISO 10365) ISO 554, Standard atmospheres for conditioning and/or testing - Specifications 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 923:2005+A1:2008 and the following apply. 3.1 covering flexible res
22、ilient or textile floor covering or wall covering 3.2 adhesive for coverings adhesive which is intended to produce firm and durable bonds between coverings and various substrates 4 Principle The bonding performance of a floor or wall covering/adhesive combination is assessed under exposure to a stat
23、ic shear force by monitoring the time until failure of the test pieces. 5 Apparatus and materials 5.1 Notched trowel, (for the shape of the notch, see Figure 1) with dimensions a, b and c specified by the adhesive manufacturer. BS EN 1902:2015EN 1902:2015 (E)EN 1902:2015 (E) 5 Key a notch depth b no
24、tch width c notch distance Figure 1 Shape of notches of notched trowel 5.2 Roller, of width (60 5) mm, diameter (90 5) mm and total mass (3,50 0,05) kg with handle at 90 to the axis (as an example, see Figure 2). Dimensions in millimetres Figure 2 Roller 5.3 Arrangement, in which five panels with a
25、test piece of floor or wall covering adhered to each, can be mounted vertically (as an example see Figure 3). 5.4 Clamping device, to be attached to each of the test pieces to enable a load, in the form of weights, to be applied. The clamping device with weight holder shall have a mass of (2,00 0,01
26、) kg and be designed in such a way that additional 2,0 kg weights are able to be added vertically (see Figure 3, for an example of a test arrangement and Figure 4 for an example of a clamp in combination with a weight holder). BS EN 1902:2015EN 1902:2015 (E)EN 1902:2015 (E) 6 Key 1 fibre cement pane
27、l 2 bracket 3 test piece 4 weight Figure 3 Test arrangement BS EN 1902:2015EN 1902:2015 (E)EN 1902:2015 (E) 7 Dimensions in millimetres Figure 4 Clamp in combination with a weight holder, mass (2,00 0,01) kg 5.5 Device for automatic monitoring, recommended when adhesive joint failure occurs. 5.6 Pri
28、mer, if applicable. BS EN 1902:2015EN 1902:2015 (E)EN 1902:2015 (E) 8 5.7 Test covering, five test pieces for each conditioning sequence of dimensions 120 mm 50 mm, the long side, running in the machine direction where this can be identified, and shall be taken at least 10 mm from the edge. 5.8 Subs
29、trate, one uncoated fibre cement panel, fully compressed and autoclaved, for each test piece. Five fibre cement panels for each conditioning sequence with a length of approximately 100 mm and a thickness of approximately 8,0 mm. The width is (50,0 0,5) mm. NOTE Depending on the source of the fibre c
30、ement panels the surfaces sometimes differ with respect to gloss, absorbency and strength. In this case, it is important to do some preliminary assessment (i.e. peel tests) of the panels to identify the preferred side for testing. The preferred side will be called the upper side of the substrate in
31、this standard. If failure of the substrate is the main finding of the preliminary assessment, a suitable primer may be used for testing. 5.9 Heating chamber. 6 Preparation of test specimens 6.1 Cleaning Ensure that all test coverings and fibre cement panels are clean and free from dust, loose partic
32、les or other contamination. 6.2 Sampling of adhesive Take a sample in accordance with EN ISO 15605 of the adhesive to be tested and examine and prepare it in accordance with EN 1067. 6.3 Conditioning of materials 6.3.1 Adhesive and floor and wall coverings Condition the materials at a standard atmos
33、phere of (23 2) C and (50 5) % relative humidity in accordance with ISO 554 for at least 24 h prior to use. 6.3.2 Fibre cement substrate Place the test panels (5.8) in a heating chamber (5.9) for 6 h at (80 2) C. Ensure that the test panels are spaced in such a way as to enable a free passage of air
34、 over them. At the end of this period, remove the test panels from the heating oven and store for 48 h in a standard atmosphere of (23 2) C and (50 5) % relative humidity prior to use. 6.4 Application of adhesive Place masking tape across one end of the upper side of each fibre cement panel, (60 0,5
35、) mm from one end, to create an area of (50 5) mm (60 0,5) mm to be coated with adhesive. Apply the adhesive under test across the full width of the fibre cement panel using a notched trowel (5.1), held at an angle of approximately 60 and draw the notched drowel (5.1) steadily down the length of the
36、 panel to provide a uniform adhesive application. Remove the masking tape when the adhesive has been applied. When applying the adhesive, it is essential that the serrated blade is kept clean and free of adhesive build-up. Clean the blade regularly (no more than five fibre cement panels to be prepar
37、ed without cleaning). In addition, regularly check the notch size and depth, especially where non-hardened steel blades are in use. BS EN 1902:2015EN 1902:2015 (E)EN 1902:2015 (E) 9 6.5 Bonding of the test covering After a time recommended by the adhesive manufacturer (i.e. minimum open time in acco
38、rdance with EN 923), place the test covering (5.7) onto the coated fibre cement panel (5.8) to provide an overlap of 60 mm such that the unbonded length protrudes from the edge of the panel coated with adhesive. Immediately after positioning the test covering, roll the test specimen with a roller (s
39、ee 5.2) by passing forward and backward once along the test specimen without any additional pressure being applied. As the adhesive has not yet set it should be ensured that the overlapping area remains 60 mm 50 mm without any shift during the subsequent treatments of the test coverings. Before appl
40、ying the roller it is advisable to support the unbonded area of the test covering by an additional 8 mm thick fibre cement panel in order to avoid tilting. For coverings which show a tendency to curl after rolling, a dead load of (2,0 0,1) kg mass can be applied for (3 0,5) h. The load is spread eve
41、nly over the whole surface thus ensuring a contact over the total bonded area of each test specimen. The procedure applied should be recorded in the test report see 8 j). Carefully remove with a clean tissue, from the edges of the test specimen, any excess adhesive that has been pressed out. No more
42、 than five test specimens shall be stacked. 6.6 Conditioning of test specimens Immediately after preparation, precondition the test specimens for seven days in a standard atmosphere of (23 2) C and (50 5) % relative humidity, in accordance with ISO 554. 7 Test procedure and evaluation of test result
43、s Carry out the shear creep test in a standard atmosphere of (23 2) C and (50 5) % relative humidity, in accordance with ISO 554. Mount the test specimens and secure them in such a way that they suspend vertically. Secure the clamping devices, each weighing a total of 2 kg, to the free end of the fl
44、oor or wall covering. Allow the test specimens to remain under these conditions for four days. Increase the load by adding a 2,0 kg weight and leave the test specimens for another four days. Then increase the load by adding another 2,0 kg weight to obtain the ultimate total load of 6,0 kg. Allow the
45、 test specimens to remain under this load for 52 d or until the joint fails. Inspect the failure mode then to determine whether the type of failure is adhesive or cohesive in accordance with EN ISO 10365. The time to obtain failure in each of the five floor or wall covering/adhesive joints on the ba
46、seplate can be monitored automatically (5.5). After the test period has elapsed, measure to the nearest millimetre any displacement of remaining floor or wall covering. BS EN 1902:2015EN 1902:2015 (E)EN 1902:2015 (E) 10 8 Test report The test report shall include at least the following: a) reference
47、 to this European Standard, i.e. EN 1902; b) designation of the adhesive together with the batch number; c) designations of test covering and primer if optional used for substrate preparation; d) notched trowel used; e) open time allowed; f) conditioning sequences used; g) individual failure time of
48、 the five test specimens rounded down to the nearest day and the mode of failure; h) measurement of any displacement of remaining floor covering or wall covering; i) any deviations from the requirements of this standard; j) factors that may have affected the result; k) date of the test. BS EN 1902:2
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