SANS 10183-4-5-2009 Adhesives for wood Part 4-5 Test methods - Static load test of multiple bondline specimens in compression shear《木材胶粘剂 第4-5部分：测试方法 压力剪切多重粘结样品的静载荷试验》.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-23462-1 SANS 10183-4-5: 2009Edition 1EN 15416-2:2007Edition 1SOUTH AFRICAN NATIONAL STANDARD Adhesives for wood Part 4-5: Test methods Sta

4、tic load test of multiple bondline specimens in compression shear This national standard is the identical implementation of EN 15416-2:2007 and is adopted with the permission of CEN, rue de Stassart 36, B-1050 Brussels. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X1

5、91 Pretoria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 10183-4-5:2009 Edition 1 EN 15416-2:2007 Edition 1 Table of changes Change No. Date Scope Acknowledgement The SABS Standard Division wishes to acknowledge the valuable assistance derived from publications of the Europ

6、ean Committee for Standardization (CEN). National foreword This South African standard was approved by National Committee SABS SC 1010A, Adhesives for wood Adhesives for wood, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS

7、 document was published in November 2009. This SANS document supersedes SANS 10183:2000 (edition 1.1), in part. SANS 10183 consists of the following parts, under the general title Adhesives for wood: Part 1: Terminology and classification. Part 2: Structural applications. Part 3: Non-structural appl

8、ications. Part 4: Test methods. SANS 10183-4, in turn, consists of the following sections: Section 1: Determination of bond strength in longitudinal tensile shear strength. Section 2: Determination of resistance to delamination. Section 3: Determination of the effect of acid damage to wood fibres by

9、 temperature and humidity cycling on the transverse tensile strength. Section 4: Determination of the effects of wood shrinkage on the shear strength. Section 5: Static load test of multiple bondline specimens in compression shear. Section 6: Determination of pH. Section 7: Resistance to creep under

10、 static loading for structural wood laminating adhesives used under exterior exposure conditions. EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 15416-2December 2007ICS 83.180English VersionAdhesives for load bearing timber structures other than phenolicand aminoplastic - Test methods - Part 2: S

11、tatic load test ofmultiple bondline specimens in compression shearAdhsifs pour structures portantes en bois, de type autreque phnolique et aminoplaste - Mthodes dessai - Partie2 : Essai de charge statique des prouvettes plan de jointmultiple en cisaillement par compressionKlebstoffe fr tragende Holz

12、bauteile ausgenommenPhenolharzklebstoffe und Aminoplaste - Prfverfahren -Teil 2: Statische Belastungsprfung an Prfkrpern mitmehreren Klebstofffugen bei Druck-ScherbeanspruchungThis European Standard was approved by CEN on 10 November 2007.CEN members are bound to comply with the CEN/CENELEC Internal

13、 Regulations which stipulate the conditions 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.Th

14、is European Standard exists in three 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 th

15、e national standards bodies of 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

16、and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15416-2:

17、2007: ESANS 10183-4-5:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 15416-2:2007 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Principle4 4 Apparatus .4 5 Selection and preparation of wood7 6 Test procedure.11 7

18、Expression of results and test report12 Bibliography 13 SANS 10183-4-5:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 15416-2:2007 (E) 3 Foreword This document (EN 15416-2:2007) has been prepared by Technical Committee CEN/TC 193 “Adh

19、esives”, 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 June 2008, and conflicting national standards shall be withdrawn at the latest by June 2008. Thi

20、s European Standard is one of a series dealing with test methods for adhesives for use in load bearing timber structures. The standard is published in support of Eurocode 5, Common unified rules for timber structures. The series consist of six test methods to assess the performance of adhesives afte

21、r specified heat and humidity treatments (EN 302, Parts 1 to 4, EN 15416-2 and EN 15416-3) and two test methods to characterize the working properties of the adhesive (EN 15416-4 and EN 15416-5). Requirements for the adhesives are stated in other standards, for instance requirements for one componen

22、t polyurethane adhesives for load bearing timber structures are given in prEN 15425. Safety statement Persons using this document should be familiar with the normal laboratory practice, in applicable. This document does not purport to address all of the safety problems, if any, associated with its u

23、se. 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 are bound to implement this Europe

24、an Standard: 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 United Kingd

25、om. SANS 10183-4-5:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 15416-2:2007 (E) 4 1 Scope This European Standard specifies a method of determining the ability of adhesive bonds to resist static load. It is applicable to adhesives u

26、sed in load bearing timber structures. It is suitable for the following applications: a) for assessing the compliance of adhesives according to prEN 15425; b) for assessing the suitability and quality of adhesives for load-bearing timber structures. This test is intended primarily to obtain performa

27、nce data for the classification of adhesives for load bearing timber structures according to their suitability for use in defined climatic environments. This method is not intended for use to provide numerical design data and does not necessarily represent the performance of the bonded member in ser

28、vice. It is not applicable to assessment of the suitability of adhesives for the manufacture of wood-based panels. 2 Normative references Not applicable. 3 Principle Glued test pieces are subjected to a constant compression shear load under a series of three different climates. Number of failures an

29、d the amount of deformation is measured after the test specimens have passed through all the climate cycles. 4 Apparatus 4.1 Test jigs The test equipment is in principle similar to that described in ASTM D 353507a, with the exception of the spring characteristics (Figure 1 and Figure 2). SANS 10183-

30、4-5:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 15416-2:2007 (E) 5 Dimensions in millimetres Key 1 top plate 2 spacer plate 3 base plate 4 tension rod x 4, diameter 15,9 mm 5 centre rod x 1, diameter 15,9 mm Figure 1 Test jig SANS

31、10183-4-5:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 15416-2:2007 (E) 6 Dimensions in millimetres Key 1 top plate 2 spacer plate 3 base plate 4 tension rod x 4, diameter 15,9 mm 5 centre rod x 1, diameter 15,9 mm Figure 2 Dimensio

32、ns of plates and rods SANS 10183-4-5:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 15416-2:2007 (E) 7 If equipment according to ASTM D 353507a is used, distance blocks need to be placed over and under the specimen. The distance block

33、s shall be prepared in such a way that the two contact surfaces, between the distance block and the jig and between the distance block and the specimen, are parallel. Blocks produced from several pieces of plywood bonded together have been found suitable. Distance blocks made by metal should be avoi

34、ded. Dimension of distance blocks: 47,6 mm 50,8 mm ca. 100,0 mm. NOTE 1 Reduced height of test jig. Since the length of the specimens is shorter than in ASTM D353507a, the height of the test jigs can be reduced correspondingly. Minimum height of distance pieces: 25 mm. The spring shall have the foll

35、owing characteristics: outside diameter (unloaded): 105 mm; end fix: both ends fixed and grounded; free length: 320 mm; compression at maximum load 45 mm to 50 mm. NOTE 2 A spring rate of 81 N/mm has shown to be suitable. 4.2 Heating chamber The heating chamber shall be capable of maintaining (70 2)

36、 C. 4.3 Climate chamber The climate chamber shall be capable of maintaining the two climates (20 2) C and (85 5) % relative humidity, and (50 2) C and (75 5) % relative humidity. 4.4 Testing machine A universal testing machine is required for applying the load to the test jigs. 5 Selection and prepa

37、ration of wood 5.1 General Untreated beech wood (Fagus sylvatica L.) with a density of (700 50) kg/m at (12 1) % moisture content shall be used. The material shall be straight grained and free from knots. The angle of the annual rings to the surface to be bonded should be between 30 and 60. The part

38、s, of which the specimen is built of, should have the same direction for the annual rings in the cross section by gluing (Figure 3). SANS 10183-4-5:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 15416-2:2007 (E) 8 Figure 3 Orientation

39、 of annual rings in cross section of lamination The wood shall be free of decay, machining defects (such as chipped grain, dubbed ends, feed roll polish, coarse knife marks and feed roll compression) and any drying defects such as case hardening, collapse, splits or checks. Condition the wood at (20

40、 2) C and a relative humidity of (65 5) % until a moisture content of (12 1) % has been obtained. Plane each lamination immediately before or not more than 4 h before applying the test adhesive. 5.2 Preparation of laminations Three laminated wood members shall be prepared in order to produce six tes

41、t samples. The laminated members shall be prepared from boards (16,0 0,1) mm thick (after planning) by (60,0 0,1) mm wide by (305,0 0,1) mm along the grain. Each laminated member shall be made from two outer lamellae as above and alternate spacers and wood sections for the inner part. The wood secti

42、ons shall be sliced from a third board identical to those above. The wood sections shall be (28,5 0,1) mm along the grain by (16,0 0,1) mm thick by (60,0 0,1) mm wide, see Figure 4. Spacers have to be made of suitable material, which makes it possible to remove them without destroying the specimen o

43、r disturb the positioning of the central pieces. Dimension of spacers: Length (6,4 0,1) mm, thickness slightly less than the mid section pieces, width (60,0 0,1) mm. NOTE 1 Spacers made from PTFE has shown to be a suitable material. SANS 10183-4-5:2009This s tandard may only be used and printed by a

44、pproved subscription and freemailing clients of the SABS .EN 15416-2:2007 (E) 9 Dimensions in millimetres Figure 4 Test assembly prior to bonding Figure 5 Test assembly after planing The centre layer of the assembly shall be made of 7 spacers and 8 wood sections alternately placed tightly adjacent t

45、o each others, see Figure 4. SANS 10183-4-5:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 15416-2:2007 (E) 10 The wood sections should be slightly thicker than the spacers to obtain adequate pressure on the glue lines. The gluing has

46、 to be done according to the suppliers recommendations. Carefully clamp the mid section lengthwise to be sure that no movement will occur when pressing the whole piece together (Figure 4). NOTE 2 It has been found that running a 13 mm wide piece of tape completely around the 15 loose pieces holds th

47、em together when mounting the laminations. The outer lamellas shall then be applied overlapping approximately 13 mm at each end and the entire assembly carefully clamped and the adhesive cured as recommended. The positioning of the centrepieces shall be secured. Spacers shall be removed and excess a

48、dhesive removed as soon as it can be done without moving the centrepieces. The spacers shall be pushed gently (not impact driven) out. After curing each three ply laminated assembly shall be trimmed along the sides to leave a width of (50,8 0,1) mm, see Figure 5. After gluing, the specimens shall be

49、 conditioned for a minimum of 14 days in standard atmosphere 20 C and 65 % RH before the load is applied. Average thickness of the bond lines is registered. 5.3 Preparation of test samples The outer lamellas of the specimen shall then be notched with a width of (3,2 0,1) mm. The notches shall divide each centre piece symmetrically. Notching should be to, but not beyond, the adhesive layer. From each of the three laminations, two test specimens with length (133,6 0,1) mm are made, eac