Bamboo is a sustainable material with a high potential to replace high-contaminating materials such as steel and concrete in many uses. However, some properties, such as the resistance to pests and dimension stability, must be improved for bamboo to be accepted by the engineering community. A low-cost way to improve dimension stability and resistance against pests is to expose the material to heat. This paper presents the results of an investigation on the effect of heat exposure on the mechanical properties of Dendrocalamus giganteus (DG) bamboo. The mechanical tests were performed to specimens previously heated during either 3 or 24 h at each of six temperatures in the range 100–225 °C. The mechanical characterization included axial and transverse tensile experiments, axial compression, and non-destructive dynamic tests to determine the dynamic flexural modulus (DFM). The effect of moisture content on mechanical properties was also measured by using untreated specimens at dry and at equilibrium moisture content (EMC) conditions. The different moisture content of the specimens from dry to EMC did not change the ultimate tensile strength (UTS), while the difference between ultimate compression strength (UCS) at EMC and dry conditions was significant and this result shows the remarkable influence of the matrix mechanical properties on the UCS. A tangible reduction in UTS and ultimate transversal tensile strength (UTTS) occurred at temperatures higher than 150 °C while the DFM was not reduced significantly and nearly remained the same for specimens heated during 3 h at temperatures lower than 200 °C. Results of this study can be taken as guidelines to plan heat exposure cycles intended to improve the dimension stability and pest resistance of the raw material as well as to assess changes in the mechanical properties during the manufacture of products such as densified bamboo.

竹是一种可持续发展的材料，在许多用途上具有取代高污染材料（如钢和混凝土）的巨大潜力。但是，必须提高某些特性，例如抗虫性和尺寸稳定性，才能使竹子被工程界所接受。改善尺寸稳定性和抗害虫性的低成本方法是使材料暴露于热。本文介绍了热暴露对Dendrocalamus giganteus（DG）力学性能的影响的研究结果。） 竹子。对先前在100到225°C范围内的六个温度下分别加热3或24 h的样品进行了机械测试。机械特性包括轴向和横向拉伸实验，轴向压缩以及确定动态弯曲模量（DFM）的无损动态测试。水分含量对机械性能的影响也可以通过在干燥和平衡水分含量（EMC）条件下使用未经处理的样品进行测量。从干燥到EMC样品的不同水分含量并没有改变最终抗拉强度（UTS），而EMC和干燥条件下的极限抗压强度（UCS）之间却有显着差异，这一结果表明基体力学性能对UCS有显着影响。在高于150°C的温度下，UTS和极限横向拉伸强度（UTTS）明显降低，而在低于200°C的温度下加热3小时的样品，DFM没有明显降低，几乎保持不变。这项研究的结果可以作为规划热暴露周期的准则，以计划提高原料的尺寸稳定性和抗虫性，以及评估在产品（如致密竹子）制造过程中机械性能的变化。