Abstract
The paper presents the description, results and result analysis for the effect of fire‐protection impregnation with a salt‐containing agent, made by a vacuum‐and‐pressure method, on wood strength. A significant effect of this impregnation type was proven for the strength types as follows: static bending, tension, lengthwise compression (ie along fibres), crosswise compression (ie across fibres), as well as for dynamic bending and impact strength in normal and elevated temperatures.
Highlights
The wood house construction sector is developing quickly at present
This direction was selected because the impact strength is the feature that quickly reacts to any change of a destructive character, but is specific for its widespread test results, whereas the static bending strength means a small scatter of results
The impregnation with the salt-containing agent by the vacuum-and-pressure method makes a significant effect on wood strength parameters
Summary
Wood has a number of advantages such as good mechanical properties, but shows a low resistance against fire and high temperatures. This feature requires new methods to be developed in order to protect wood from the operation of fire and high temperatures. There is a number of well-known protection methods: fire-proof insulation panels, fire-proof lacquers, and expanding coats to name just a few Among those methods, impregnation with chemical agents, ie with impregnants, is widely applied. An analysis of test results (tests made at the Zakład Mechaniki Stosowanej Szkoły Głównej Służby Pożarniczej – the Applied Mechanics Department of the Main School of Fire Service) was made in order to clear the effect of fire-protection impregnation with saltcontaining agents by a vacuum-and-pressure method
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