Combinations of engineered bamboo with wood or even steel substrates have generated increasing attention and research in construction industries around the world. This paper took an experimental study on the bonding properties of engineered bamboo-steel epoxy adhesive joints strengthened and repaired with resin pre-coating (RPC) and carbon nanotube (CNT) surface treatments. The RPC method was applied by pre-coating the diluted resin-acetone solution on the bonding surfaces, while the CNT method was carried out by brushing the CNTs-resin-acetone mixed solution on the bonding surfaces. Test results showed that RPC and CNT surface treatments improved the bonding properties of the adhesive joints. Moreover, compared with the original adhesive joint, as well as the RPC-strengthening or CNT-strengthening joints, the repairing joints had a better performance in terms of bonding strength and energy, especially for the joints repaired with new steel substrates. The reason was that new failure surfaces with decreased cohesive failure and increased adhesive failure happened in the repairing joints, which produced a better bonding property.

中文翻译：

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在树脂预涂的基础上用碳纳米管加固和修复工程竹钢环氧胶粘接头

人造竹与木材甚至钢质基材的结合在全球建筑行业中引起了越来越多的关注和研究。本文对通过树脂预涂和碳纳米管表面处理加固和修复的工程竹钢环氧粘合接头的粘结性能进行了实验研究。通过将稀释的树脂-丙酮溶液预涂在粘结表面上来应用RPC方法，而通过将CNTs-树脂-丙酮混合溶液刷在粘结表面上来进行CNT方法。测试结果表明，RPC和CNT表面处理可改善粘合接头的粘合性能。而且，与原始的粘合接头以及RPC增强接头或CNT增强接头相比，修复接头在粘结强度和能量方面具有更好的性能，尤其是对于用新型钢基材修复的接头。原因是在修复接头中出现了新的失效面，其内聚破坏减少，而粘附破坏增加，产生了更好的粘结性能。