Browsing by Author "Yin, Lili"

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  • Properties of wood recovered from building demolition
    (2024-08-29) Yin, Lili
     Kemian tekniikan korkeakoulu | Master's thesis
    The aim of this thesis is to find out if reclaimed wood material that has already been used as a structural element is strong enough to be used again as a structural element. Circular economy and 9R framework are discussed to give background to this topic as to why it is important to reuse wood and take some load off virgin materials. Wood properties and how wood ages are also discussed. For the experimental part, microscopy, 3-point bending, and contact angle tests were made. Microscopy was used to find out the species of the reclaimed wood and contact angle tests to analyse how ageing has affected the hygroscopicity. In 3-point bending tests, the MOE, MOR and failure strains were analysed. These obtained values were then compared with fresh wood material and with literature values. The obtained results of this case study will contribute to the larger pool of information that help with future practises of more sustainable nature.
  • X-Ray Photoelectron Spectroscopy Technique – theory and practice
    (2022-06-09) Yin, Lili
     Kemiantekniikan korkeakoulu | Bachelor's thesis