EN 634-2:2007

SLOVENSKI STANDARD
01-julij-2007
1DGRPHãþD
SIST EN 634-2:1998
&HPHQWQRLYHUQHSORãþH6SHFLILNDFLMHGHO=DKWHYH]DLYHUQHSORãþHYH]DQH]
23&]DXSRUDERYVXKLKYODåQLKLQ]XQDQMLKSRJRMLK
Cement-bonded particleboards - Specifications - Part 2: Requirements for OPC bonded
particleboards for use in dry, humid and external conditions
Zementgebundene Spanplatten - Anforderungen - Teil 2: Anforderungen an
Portlandzement (PZ) gebundene Spanplatten zur Verwendung im Trocken-, Feucht- und
Außenbereich
Panneaux de particules liées au ciment - Exigences - Partie 2 : Exigences pour les
panneaux de particules liées au ciment Portland ordinaire utilisés en milieux sec, humide
et extérieur
Ta slovenski standard je istoveten z: EN 634-2:2007
ICS:
79.060.20 9ODNQHQHLQLYHUQHSORãþH Fibre and particle boards
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 634-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
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 liées au ciment - Exigences - Partie Zementgebundene Spanplatten - Anforderungen - Teil 2:
2 : Exigences pour les panneaux de particules liées au Anforderungen an Portlandzement (PZ) gebundene
ciment Portland ordinaire utilisés en milieux sec, humide et Spanplatten zur Verwendung im Trocken-, Feucht- und
extérieur Außenbereich
This European Standard 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 concerning 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 language 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, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 634-2:2007: E
worldwide for CEN national Members.

Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Requirements.5
4 Verification of compliance .6
5 Marking .7
Bibliography .9

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 latest 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 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 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 bound 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, Switzerland and United Kingdom.
1 Scope
This European Standard for cement-bonded particleboards specifies the requirements for particleboards
1) 2)
bonded with Ordinary Portland Cement (OPC) for use in dry, humid and external conditions. Additional
information on supplementary properties 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-bonded 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 (including 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 associated 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 under 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 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 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 corresponding 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. Boards of this type are suitable for use in
biological hazard classes 1, 2, 3 and 4 of EN 335-3.
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 Requirements
3.1 General requirements
OPC bonded particleboards shall comply with the general req
...