1、May 2007DEUTSCHE NORM English price group 7No part of this standard 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).ICS 79.060.20!,xOA“9854430www.d
2、in.deDDIN EN 634-2Cement-bonded particleboards Specifications Part 2: Requirements for OPC bonded particleboards for use in dry,humid and external conditionsEnglish version of DIN EN 634-2:2007-05Zementgebundene Spanplatten Anforderungen Teil 2: Anforderungen an Portlandzement (PZ) gebundene Spanpla
3、tten zur Verwendungim Trocken-, Feucht- und AuenbereichEnglische Fassung DIN EN 634-2:2007-05SupersedesDIN EN 634-2:1996-10www.beuth.deDocument comprises 11 pages 08.07DIN EN 634-2:2007-05 2 National foreword This standard has been prepared by CEN/TC 112 “Wood-based panels”, the Secretariat of which
4、 is held by DIN (Germany). The responsible German body involved in its preparation was the Normenausschuss Holzwirtschaft und Mbel (Timber and Furniture Standards Committee), Technical Committee NA 042-02-15 AA Holzwerkstoffe. Amendments This standard differs from DIN EN 634-2:1996-10 as follows: a)
5、 The requirements for marking have been revised. b) External control in the factory in accordance with EN 326-2 has been specified. c) Inspection of an isolated lot of panels in accordance with EN 326-3 has been specified. Previous editions DIN EN 634-2: 1996-10 EUROPEAN STANDARD NORME EUROPENNE EUR
6、OPISCHE NORM EN 634-2 February 2007 ICS 79.060.20 Supersedes EN 634-2:1996 English Version Cement-bonded particleboards - Specifications - Part 2: Requirements for OPC bonded particleboards for use in dry, humid and external conditions Panneaux de particules lies au ciment - Exigences - Partie 2 : E
7、xigences pour les panneaux de particules lies au ciment Portland ordinaire utiliss en milieux sec, humide et extrieur Zementgebundene Spanplatten - Anforderungen - Teil 2: Anforderungen an Portlandzement (PZ) gebundene Spanplatten zur Verwendung im Trocken-, Feucht- und Auenbereich This European Sta
8、ndard was approved by CEN on 13 January 2007. 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 lists and bibliographical references concernin
9、g 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 versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own la
10、nguage and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
11、Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN A
12、ll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 634-2:2007: EEN 634-2:2007 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Requirements.5 4 Verification of compliance 6 5 Marking .7 Bibliography 9 EN 634-2:2007 (E) 3
13、Foreword This document (EN 634-2:2007) has been prepared by Technical Committee CEN/TC 112 “Wood-based panels”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the lates
14、t by August 2007, and conflicting national standards shall be withdrawn at the latest by August 2007. This document supersedes EN 634-2:1996. The principal modifications introduced by this standard consist of a revision of the product marking requirements, clarification that external control in the
15、factory is carried out according to EN 326-2, and clarification that inspection of an isolated lot of panels may be carried out according to EN 326-3. This standard is one of a series specifying requirements for cement-bonded particleboards: EN 634-1, Cement-bonded particleboards Specification Part
16、1: General requirements; EN 634-2, Cement-bonded particleboards Specifications Part 2: Requirements for OPC bonded particleboards for use in dry, humid and external conditions. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are boun
17、d to implement this European 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, Sw
18、itzerland and United Kingdom. EN 634-2:2007 (E) 4 1 Scope This European Standard for cement-bonded particleboards specifies the requirements for particleboards bonded with Ordinary Portland Cement (OPC) for use in dry, humid1)and external2)conditions. Additional information on supplementary properti
19、es for certain applications is also given. NOTE 1 Boards made with cement other than OPC may comply with this Standard if test values are declared according to EN 13986. However, further parts of EN 634 may be developed in the future to cover other types of cement or other materials. NOTE 2 Cement-b
20、onded particleboard does not contain any asbestos fibre. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (incl
21、uding any amendments) applies. EN 310, Wood-based panels Determination of modulus of elasticity in bending and of bending strength EN 317, Particleboards and fibreboards Determination of swelling in thickness after immersion in water EN 318, Wood based panels Determination of dimensional changes ass
22、ociated with changes in relative humidity EN 319, Particleboards and fibreboards Determination of tensile strength perpendicular to the plane of the board EN 320, Fibreboards Determination of resistance to axial withdrawal of screws EN 321, Wood-based panels - Determination of moisture resistance un
23、der cyclic test conditions EN 323, Wood-based panels Determination of density EN 326-1, Wood-based panels Sampling, cutting and inspection Part 1 Sampling and cutting of test pieces and expression of test results EN 326-2, Wood-based panels Sampling, cutting and inspection Part 2: Quality control in
24、 the factory EN 634-1, Cement-bonded particleboards Specification Part 1: General requirements EN 789, Timber structures Test methods Determination of mechanical properties of wood based panels EN 1058, Wood-based panels Determination of characteristic values of mechanical properties and density EN
25、1128, Cement-bonded particleboards Determination of hard body impact resistance ENV 1156, Wood-based panels Determination of duration of load and creep factors 1) Humid conditions are defined in terms of service class 2 of EN 1995-1-1 which is characterized by moisture content in the material corres
26、ponding to a temperature of 20 C and a relative humidity of the surrounding air exceeding 85 % for only a few weeks per year. Boards of this type are suitable for use in biological hazard classes 1 and 2 of EN 335-3. 2) External conditions are defined in terms of service class 3 of EN 1995-1-1. Boar
27、ds of this type are suitable for use in biological hazard classes 1, 2, 3 and 4 of EN 335-3. EN 634-2:2007 (E) 5 EN 1328, Cement bonded particleboards Determination of frost resistance EN 13986:2004, Wood-based panels for use in construction Characteristics, evaluation of conformity and marking 3 Re
28、quirements 3.1 General requirements OPC bonded particleboards shall comply with the general requirements listed in EN 634-1 and the requirements set out in Table 1 of this standard. 3.2 Specified properties The requirements in Table 1 shall be met by five percentile values (95 percentile values in t
29、he case of thickness swelling) based on the mean values for individual boards and calculated in accordance with EN 326-1. In the case of thickness swelling they shall be equal to or less than the values in Table 1 and in the case of all other properties they shall be equal to or greater than the val
30、ues in Table 1. Table 1 Requirements for specified properties Property Test method Unit Requirement (all thicknesses) Density EN 323 Kg/m3 1 000 Bending strength EN 310 N/mm2 9 Modulus of elasticity in bending EN 310 N/mm2Class 1 4 500 Class 2 4 000 Internal bond EN 319 N/mm20,5 Swelling in thicknes
31、s 24 h EN 317 % 1,5 Internal bond after cyclic test EN 319 and EN 321 N/mm20,3 Swelling in thickness after cyclic test EN 317 and EN 321 % 1,5 If it is made known by the purchaser that the boards are intended for specific use in flooring, walls or roof-ing, the relevant performance standard EN 12871
32、 has to be consulted. This can result in having to comply with additional requirements. NOTE 1 The values in this table for both bending strength and modulus of elasticity shall apply to test results obtained in any direction in the plane of the panel. NOTE 2 With the exception of thickness swelling
33、 and the cyclic test, the values given in this table are characterized by moisture content in the material corresponding to a relative humidity of 65 % and a temperature of 20 C. 3.3 Supplementary properties For certain applications, information on some of the properties listed in Table 2 can be req
34、uired and where appropriate, shall be supplied by the board manufacturer. In this case all shall have been derived using the test methods listed in Table 2. EN 634-2:2007 (E) 6 Table 2 Supplementary properties and test methods Property Test method Dimensional changes EN 318 Impact resistance EN 1128
35、 Resistance to withdrawal of screws EN 320 Frost resistance EN 1328 Creep and duration of load ENV 1156 Structural properties (strength and stiffness) EN 789 and EN 1058 NOTE For certain applications, information on additional properties not specified in Table 2 can be required. For example, for det
36、ermining of thermal conductivity, water vapour transmission, and classification for reaction to fire, see EN 13986. 4 Verification of compliance 4.1 General Verification of compliance with this EN shall be carried out using the test methods listed in Table 1, Table 2 (where required), EN 634-1, and
37、shall comply with the requirements of EN 13986 for panels used for construction purposes. 4.2 External control External control in the factory, if required by EN 13986, shall be carried out according to EN 326-2. Inspection of consignments shall be carried out according to statistical basis. NOTE In
38、spection of isolated lots of panels can be carried out according to EN 326-3. 4.3 Factory production control Factory production control shall be carried out according to EN 326-2. The properties listed in Table 3 shall be controlled using intervals between tests not exceeding the intervals given. Sa
39、mpling shall be carried out at random. Alternative test methods and/or unconditioned test pieces may be used if a valid correlation can be proven (see EN 326-2) with the specified test method. EN 634-2:2007 (E) 7 Table 3 Maximum intervals between tests for each production line Property Maximum inter
40、val between tests General properties: Thickness (unsanded) Thickness (sanded) Length Width Squareness Edge straightness Moisture content 8 h per thickness 2 h per thickness 2 h per thickness 2 h per thickness 2 h per thickness 2 h per thickness 8 h per thickness Density Bending strength Modulus of e
41、lasticity (bending) 8 h per thickness rangea Internal bond Swelling in thickness, 24 h 24 h Internal bond after cyclic test Swelling in thickness after cyclic test One week aA thickness range is defined as any range of thicknesses extending to 6 mm from the preceding manufactured thickness.5 Marking
42、 5.1 Marking boards placed on the internal market of the European Economic Area for construction purposes Boards marketed in one or more market territories of the European Union or other territories of the wider European Economic Area shall be marked in accordance with the requirements of EN 13986,
43、to signify compliance with that standard and denote the claim (by affixing a CE mark), that the boards are legally placed on the market in accordance with the Construction Products Directive provisions and corresponding national regulations. NOTE For full details of the above requirements for markin
44、g, either by reference to the appropriate technical class (board type) for OPC bonded particleboards or on the basis of declared property values, see clause 7 (Marking) and ZA.3 (CE Marking) of EN 13986:2004. 5.2 Positioning of the marking applied according to 5.1 The marking and the accompanying in
45、formation shall be placed according to the provisions of EN 13986. 5.3 Marking of other boards Boards not marketed as mentioned in clause 5.1 shall be marked either (a) according to the requirements of clause 5.1 if acceptable to the buyer, or (b) according to the relevant properties for the intende
46、d application using the elements in Table 4. EN 634-2:2007 (E) 8 5.4 All boards Whether the marking is applied according to clause 5.1 or clause 5.3, if the marking and/or the accompanying information is/are not placed on the product itself, the first commercial purchasers to whom the product is del
47、ivered shall be responsible for ensuring that all relevant information, as contained in the relevant table of EN 13986, EN 634-1 or this standard, is passed to any other commercial purchaser or user to whom he or she in turn delivers the product. NOTE If CE marking is applied according to the requir
48、ements of EN 13986, the marking may only be applied by the producer or agent situated within the European Economic Area and duly authorised by the producer for that purpose. The authenticity of all product information accompanying the CE mark remains the responsibility of the producer. 5.5 Cut-size
49、panels In case of cut-size panels, where the first purchaser is the user of the product and where he agrees that marking (other than on the package) is unnecessary, the marking of such individual panels in the package need not be undertaken. 5.6 Colour coding Additionally, panels may be colour coded with two vertical white stripes and one vertical brown stripe, each 25 mm in length, applied near one corner of the board. NOTE This is in accordance with the unified system of colour coding for wood-based panels and
