混合交叉层木材 (CLT) 的曲性能,使用各种物种组合
Ahmed Altaher Omer Ahmed1, József Garab1, Erika Horváth-Szováti2
1Institute of Wood Technology and Technical Sciences, University of Sopron, 9400 Sopron, Hungary.
Materials (Basel, Switzerland)
|November 25, 2023
概括
匈牙利的木和木等硬木在交叉层木材 (CLT) 生产方面具有巨大的潜力,与传统软木相比,它们具有优越的机械性能. 特别是,与商业软木CLT性能竞争.
科学领域:
- 材料科学 材料科学 材料科学
- 结构工程 结构工程
- 林业林业 林业 林业 林业
背景情况:
- 交叉层木材 (CLT) 是一个成功的工程木材产品,以性能和可持续性而闻名.
- 软木资源有限,需要探索用于CLT制造的替代木种.
- 匈牙利的森林为CLT开发提供了潜在的硬木资源.
研究的目的:
- 为了研究由匈牙利硬木物种 (,) 制成的CLT面板的机械性能,以及它们与杉木的组合.
- 评估使用树和树作为高性能CLT的原材料的可行性.
- 确定影响硬木基CLT机械性能的关键因素.
主要方法:
- 使用木,木和杉木与聚氨粘合剂制造均和混合CLT面板.
- 实验测试以确定机械性能,包括弹性模量 (MOE) 和破裂模量 (MOR).
- 对故障模式的分析和机械性能与面板密度和物种组成的相关性.
主要成果:
- 基于的CLT显示了与高档软木CLT相比或超过的机械性能 (MOE,MOR).
- 与商业软木CLT相比,木和杂交木板表现出优越的曲性能.
- 由于与密度差异相关的粘合性问题,木-杉杂交面板的性能显著下降,由粘合线故障证明.
- 平均面板密度是机械性能的主要预测因素,混合密度面板除外.
结论:
- 匈牙利树是高性能CLT生产的有希望的替代品.
- 像木这样的高密度硬木为先进的CLT应用提供了极好的潜力.
- 仔细考虑物种密度匹配对于成功的混合CLT面板制造至关重要,以避免粘合剂故障.
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