TY - JOUR AU - Espósito De Oliveira, Rafael Gonçalves AU - Gomes Gonçalves, Fabricio AU - De Alcântara Segundinho, Pedro Gutemberg AU - Tarcísio Da Silva Oliveira, José AU - Benigno Paes, Juarez AU - Silva Chaves, Izabella Luzia AU - Soares Brito, Alice PY - 2020/10/01 Y2 - 2024/03/28 TI - Analysis of glue line and correlations between density and anatomical characteristics of Eucalyptus grandis × Eucalyptus urophylla glulam JF - Maderas-Cienc Tecnol JA - Maderas-Cienc Tecnol VL - 22 IS - 4 SE - Article DO - UR - https://revistas.ubiobio.cl/index.php/MCT/article/view/4172 SP - 495-504 AB - <p>This study aimed to analyze the glue line thickness effect and its relation with density and anatomical characteristics of eucalyptus wood. Thus, the thickness of main and secondary glue lines was measured as well as their interaction with apparent density of elements glued with resorcinol-formaldehyde (RF) and castor oil polyurethane (CP) adhesives. Anatomical wood characterization of <em>Eucalyptus grandis</em> × <em>E. urophylla</em> was performed by correlating glue line thickness. According to normative instruction, specimens were produced for delamination tests. The experiment was conducted in a completely random 2 × 2 design factorial scheme (two classes of wood apparent density and two adhesives). Pearson correlation (t &lt; 0,01) was performed among variables. It was found that there was adhesive penetration into vessels and rays of wood. Glue line thickness was higher in woods with density higher than to 0,58 g∙cm<sup>-3</sup> glued with RF adhesive. There was a low correlation between wood density and vessel diameter to main and secondary glue lines (t &lt; 0,01).</p> ER -