Portuguese forests are mainly composed of hardwoods, which represent 69% of the forest area in 2010, being Blue gum (Eucalyptus globulus Labill.) the most abundant species (26%). The suitability of Blue gum for structural applications was demonstrated in previous studies. However, the most common uses are still related to the pulp and paper industry as well as energy production, mainly due to sawing and drying issues. The present paper describes a preliminary study on the potential application of non-destructive tests and analytical methods to predict the most important mechanical properties of glued laminated timber (glulam) beams made of Blue gum. The potential of mixed beams made of Blue gum and poplar was also analysed. The longitudinal vibration method and the transformed section method were considered. A total of 11 non-finger jointed full-scale glulam beams (7 of Blue gum and 4 mixed) were manufactured in the laboratory and tested for modulus of elasticity and bending strength assessment. After the bending tests, the density and moisture content of the beams were determined, and the bonding performance was checked by delamination and shear strength tests. Correlation coefficients were established between the predicted values and the experimentally assessed mechanical properties, indicating a huge potential of the predictive methods used. The mechanical properties of non-finger jointed beams tested were above the typical values found in the literature for the most common hardwoods available in European forest.

葡萄牙的森林主要由阔叶树组成，占2010年森林面积的69％，是蓝桉树（Eucalyptus globulus拉比尔（Labill。）最丰富的物种（26％）。先前的研究证明了蓝胶在结构上的适用性。但是，最常见的用途仍然与纸浆和造纸工业以及能源生产有关，这主要是由于锯切和干燥问题。本文介绍了无损检测和分析方法在预测蓝胶制成的胶合层压木（胶合木）梁最重要的机械性能方面的潜在应用的初步研究。还分析了由蓝胶和杨树制成的混合梁的潜力。考虑了纵向振动法和变截面法。在实验室中，总共制造了11条非指接全尺寸胶合木梁（7根蓝胶和4根混合胶），并测试了弹性模量和弯曲强度评估。弯曲试验后，确定梁的密度和含水量，并通过分层和剪切强度试验检查粘结性能。在预测值和实验评估的机械性能之间建立了相关系数，表明所用预测方法的巨大潜力。对于欧洲森林中最常见的硬木，所测试的非指接梁的机械性能高于文献中的典型值。并通过分层和剪切强度测试来检查粘合性能。在预测值和实验评估的机械性能之间建立了相关系数，表明所用预测方法的巨大潜力。对于欧洲森林中最常见的硬木，所测试的非指接梁的机械性能高于文献中的典型值。并通过分层和剪切强度测试来检查粘合性能。在预测值和实验评估的机械性能之间建立了相关系数，表明所用预测方法的巨大潜力。对于欧洲森林中最常见的硬木，所测试的非指接梁的机械性能高于文献中的典型值。