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BS EN 302-4:2023

BS EN 302-4:2023

$102.76

Adhesives for load-bearing timber structures. Test methods – Determination of the effects of wood shrinkage on the shear strength

Published By Publication Date Number of Pages
BSI 2023 18
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This document specifies a method for determining the influence of shear strength in crosswise gluing by wood shrinkage under drying conditions. It is applicable for the following applications: a) for assessing the compliance of adhesives with EN 301, EN 15425, EN 16254, EN 17334 and EN 17418; b) for assessing the suitability and quality of adhesives for load-bearing timber structures; c) for determining if the adhesive is capable of withstanding stresses due to wood shrinkage without unacceptable loss of strength. 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.). This method is not intended to provide data for structural design and does not necessarily represent the performance of the bonded member in service.

PDF Catalog

PDF Pages PDF Title
2 undefined
8 1 Scope
2 Normative references
3 Terms and definitions
9 4 Symbols
5 Principle
6 Apparatus
7 Method
7.1 General
7.1.1 Selection of timber
10 7.1.2 Preparation of cover pieces
7.1.3 Preparation of core pieces
7.1.4 Conditioning
11 7.2 Preparation of the bonded assemblies
13 7.3 Number of bonded assemblies
7.4 Dry storage treatment
7.5 Preparation of the test piece
14 7.6 Climatic storage
7.7 Test procedure
15 8 Expression of results
9 Test report
9.1 The adhesive
9.2 Preparation of the samples and the testing procedures
16 9.3 Test results

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BS EN 302-4:2023
$102.76