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<p>This study is dedicated to the production of Cross-Laminated Timber (CLT) panels using pine wood, treated through in situ polymerisation with raw pine resin, with a primary focus on evaluating their resistance against termite attacks. The effectiveness of the treatment was assessed based on density gain. The CLT specimens underwent exposure to subterranean termites through a choice feeding test, and subsequent mass losses were meticulously documented. Mechanical behaviors, both pre and post-termite attack, were comprehensively analyzed through tensile and compression tests. The treatment demonstrated a notable increase in termite resistance, resulting in significantly larger compressive properties. While tensile properties exhibited comparable averages between treated and untreated specimens, the treatment showcased its efficacy in preserving the mechanical integrity of CLT. Treated specimens retained their mechanical properties in both compression and tension even after termite attacks, in stark contrast to untreated counterparts, which displayed a significant impairment in their properties. These findings underscore the potential of in situ polymerisation with raw pine resin as an efficient method to bolster termite resistance and safeguard the mechanical strength of CLT panels. The study contributes valuable insights for the construction industry, especially in regions where termite infestation poses a significant challenge to wooden structures, emphasizing the promising application of environmentally friendly treatments in enhancing the durability of construction materials.</p>

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Termite resistance of a pine wood-based cross-laminated timber impregnated treated with raw pine resin

  • 期刊论文

  • 发表日期：

    2025年4月2日

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  • Rodrigo Adolfo Benitez Mendes,
  • Andrey Pereira Acosta,
  • Kelvin Techera Barbosa,
  • Darci Alberto Gatto,
  • Rafael de Avila Delucis

摘要

This study is dedicated to the production of Cross-Laminated Timber (CLT) panels using pine wood, treated through in situ polymerisation with raw pine resin, with a primary focus on evaluating their resistance against termite attacks. The effectiveness of the treatment was assessed based on density gain. The CLT specimens underwent exposure to subterranean termites through a choice feeding test, and subsequent mass losses were meticulously documented. Mechanical behaviors, both pre and post-termite attack, were comprehensively analyzed through tensile and compression tests. The treatment demonstrated a notable increase in termite resistance, resulting in significantly larger compressive properties. While tensile properties exhibited comparable averages between treated and untreated specimens, the treatment showcased its efficacy in preserving the mechanical integrity of CLT. Treated specimens retained their mechanical properties in both compression and tension even after termite attacks, in stark contrast to untreated counterparts, which displayed a significant impairment in their properties. These findings underscore the potential of in situ polymerisation with raw pine resin as an efficient method to bolster termite resistance and safeguard the mechanical strength of CLT panels. The study contributes valuable insights for the construction industry, especially in regions where termite infestation poses a significant challenge to wooden structures, emphasizing the promising application of environmentally friendly treatments in enhancing the durability of construction materials.