A determination and comparison of properties of post-consumer wood of the basic conifers

S.V. Gayda; L.E. Lesiv

doi:10.36930/42194506

Authors

S.V. Gayda
L.E. Lesiv

DOI:

https://doi.org/10.36930/42194506

Keywords:

wood science & technology, wood processing, post-consumer wood, physical and mechanical properties, strength, coniferous species, pine, fir, larch, spruce.

Abstract

The physical-mechanical properties of post-consumer wood (PCW) coniferous wood, namely pine fir, larch, spruce, were investigated. Tabular data of post-consumer wood of individual coniferous species are compiled: larch, pine, spruce and fir. The following physico-mechanical indices of used coniferous wood are investigated: density, impact hardness of fibers, static hardness, static flexural strength, chipping strength along fibers, compressive strength. Nomograms based on the research results have been constructed, which made it possible to efficiently carry out a comparative analysis of indicators for all breeds – physical-mechanical parameters of primary wood and post-consumer wood of some coniferous species. It is established that the characteristics of freshly chopped and used timber of separate coniferous species, namely pine, fir, larch, spruce, differ within acceptable limits and not more than 10-15%. Post-consumer wood coniferous timber meets the standards in terms of their physico-mechanical characteristics. On the basis of the obtained experimental researches the possibility of using used wood of separate coniferous breeds of post-consumer wood coniferous, namely pine, fir, larch, spruce for the production of wood products with satisfactory physical and mechanical properties was established. The economic feasibility of using some coniferous wood is analyzed. It is substantiated that the processing of used wood is of great environmental and social importance – the benefits of material processing of this resource. In addition, the used wood stores carbon dioxide, because after burning it will be released into the air, which is important in terms of environmental ecology. It is established that post-consumer wood of individual coniferous species is a suitable resource for material use in woodworking. It has been found that the research and recommendations will be useful for the production of products and the training process in the training of technologists.

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