NA 042

DIN Standards Committee Timber and Furniture

Project

Adhesives for load-bearing timber structures - Test methods - Part 3: Determination of the effect of acid damage to wood fibres by temperature and humidity cycling on the transverse tensile strength; German and English version prEN 302-3:2021

Abstract

This European Standard specifies a method for determining the effect on bond strength of damage to wood fibres caused by the action of acids from the adhesive or primer used in the gluing process during climatic cycling.It is suitable for the following applications:a) for assessing the compliance of adhesives with EN 301, EN 15425 and EN 16254;b) for assessing the suitability and quality of adhesives for load-bearing timber structures;c) for determining if the adhesive after bonding has a damaging influence on the strength of the wood due to chemical action.This test is intended primarily to obtain performance data for the classification of adhesives for load-bearing timber structures according to their suitability for use in defined climatic environments. This test is carried out on Norway spruce (Picea abies L.) or Beech (Fagus sylvatica L.).This method is not intended for use to provide numerical design data and does not necessarily represent the performance of the bonded member in service.

Begin

2021-07-12

WI

00193376

Planned document number

DIN EN 302-3

Project number

04201157

Responsible national committee

NA 042-04-05 AA - Mirror committee for CEN/TC 193/SC 1 wood adhesives 

Responsible european committee

CEN/TC 193/SC 1/WG 8 - Revision of EN 301 and EN 302 

draft standard

Adhesives for load-bearing timber structures - Test methods - Part 3: Determination of the effect of acid damage to wood fibres by temperature and humidity cycling on the transverse tensile strength; German and English version prEN 302-3:2021
2022-01
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previous edition(s)

Adhesives for load-bearing timber structures - Test methods - Part 3: Determination of the effect of acid damage to wood fibres by temperature and humidity cycling on the transverse tensile strength; German version EN 302-3:2017
2017-11

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Contact

Dipl.-Holzwirt

Bernd Trepkau

Am DIN-Platz, Burggrafenstr. 6
10787 Berlin

Tel.: +49 30 2601-2397
Fax: +49 30 2601-42397

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