The construction industry is vital for economic development, but it accounts for 40% of energy consumption and 45% of global greenhouse gas emissions. In this context, research has focused on reducing energy demand in homes, particularly through the development of insulation materials. Sawdust is a byproduct available annually in Chile in quantities exceeding 4.5 million tons. Therefore, the objective of this study was to characterize the physical and thermal properties of this waste to evaluate its use as a thermal insulation material. Stability and thermal conductivity tests, as well as density and moisture content measurements, were conducted on the sawdust. Additionally, to assess the functionality of this thermal insulator, the material was applied using the blowing technique in partitions, followed by physical tests. The results indicate that the proposed insulation material has thermal stability up to 270 °C. The thermal conductivity was comparable to conventional mineral wool and fiberglass (0.042–0.048 [W/mK]). The density ranged from 123.77 to 198.15 [kg/m³] depending on the filling time of the specimens but remained low compared to other organic materials. The moisture content was 11.31%, suitable for maintaining good thermal conductivity. This study concludes that sawdust is a viable alternative for thermal insulation, especially when applied through blowing. Its stability and thermal conductivity are comparable to conventional materials, while its thermal inertia is 200% higher than that of glass wool. Furthermore, the low moisture content suggests that there would be no proliferation of pathogens, making it a promising thermal insulator for sustainable construction development. Finally, it is mentioned that the material carbonizes within a limited time, leading to self-extinguishment of the flame.

中文翻译：

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先进制造过程中产生的锯末废料的表征和利用，用于使用吹制技术在可持续建筑中用作隔热材料

建筑业对经济发展至关重要，但其能源消耗量占全球的40%，温室气体排放量占全球的45%。在这种背景下，研究的重点是减少家庭的能源需求，特别是通过开发绝缘材料。锯末是智利每年产量超过 450 万吨的副产品。因此，本研究的目的是表征这种废物的物理和热性能，以评估其作为隔热材料的用途。对锯末进行了稳定性和导热性测试，以及密度和水分含量测量。此外，为了评估这种绝热体的功能，我们使用吹制技术将材料应用于隔断中，然后进行物理测试。结果表明，所提出的绝缘材料的热稳定性高达 270 °C。导热系数与传统矿棉和玻璃纤维相当（0.042–0.048 [W/mK]）。密度范围为 123.77 至 198.15 [kg/m3]，具体取决于样本的填充时间，但与其他有机材料相比仍然较低。含水量为11.31%，适合保持良好的导热性。这项研究的结论是，锯末是一种可行的隔热替代品，特别是通过吹制应用时。其稳定性和导热系数与常规材料相当，而热惯性比玻璃棉高200%。此外，低含水量表明病原体不会繁殖，使其成为可持续建筑发展的有前景的隔热材料。最后，提到材料在有限的时间内碳化，导致火焰自熄。