BS EN 12404:2020
$142.49
Durability of wood and wood-based products. Assessment of the effectiveness of masonry fungicide to prevent growth into wood of Dry Rot Serpula lacrymans (Schumacher ex Fries) S.F. Gray. Laboratory method
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 24 |
This document specifies a method for determining the performance of a preservative, applied to the upper surface of the mortar test specimens, in preventing the growth of dry rot through the treated mortar when exposed to the test fungus.
This method is only applicable to masonry fungicides applied as a true solution of the preservative in water or dilute oil in water emulsion. It is not applicable to rods, pastes and other similar preservative types. This method is applicable to preservatives applied to masonry by brushing, spraying and/or injection techniques or mixed into rendering and plastering mortar for masonry.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 5 | European foreword |
| 6 | Introduction |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions |
| 8 | 4 Principle 5 Test materials 5.1 Test fungus 5.1.1 Obligatory test fungus 5.1.2 Optional test fungi 5.1.3 Maintenance of strains 5.2 Products and reagents 5.2.2 Malt – mineral salt – agar culture medium, consisting of: |
| 9 | 5.3 Apparatus 5.3.1 Culture vessels |
| 11 | 6 Sample of the preservative 7 Mortar test specimen 7.1 Preparation of mortar 7.2 Preparation of mortar specimen |
| 13 | 7.3 Curing of mortar test specimen 7.4 Leaching of mortar test specimen 7.5 Number and distribution of mortar test specimens 8 Wood test specimens 8.1 Species of wood 8.2 Quality of wood |
| 14 | 8.3 Provision of wood test specimens 8.4 Dimensions of wood test specimens 9 Procedure 9.1 Culturing the test fungus 9.2 Treatment of mortar test specimens 9.3 Preparation of wood test specimens 9.4 Sterilization procedures 9.5 Exposure to fungus |
| 15 | 9.6 Examination of the mortar test specimens |
| 16 | 9.7 Validity of test 10 Statement of the results |
| 17 | 11 Test report |
| 18 | Annex A (informative) Test fungi |
| 20 | Annex B (informative) Methods of sterilization |
| 21 | Annex C (informative) Example of a test report |
