南京工业大学学报（自然科学版）2016，Vol.38Issue(5)：116-120,5.DOI:10.3969/j.issn.1671-7627.2016.05.019
速生杨木横向层正交胶合木滚动剪切性能
Planar shear properties of fast-growing poplar in hybrid cross laminated lumber
摘要
Abstract
To evaluate the feasibility of using fast-growing poplar to fabricate cross laminated lumber (CLT),the planar (rolling) shear properties of fast-growing poplar,modified fast-growing poplar compressed in the transverse direction,modified fast-growing poplar impregnated with phenol-formaldehyde(PF)resin and Spruce-pine-fir (SPF)dimension lumber were measured using hybrid CLT in this study.The failure modes in planar(rolling)shear tests were also analyzed.It could be found that there was no obvious improvement in planar shear properties of fast-growing poplar after modification.The typical failure modes of fast-growing poplar and SPF in planar shear test included rolling shear failure along the growth ring direction,shear failure along the wood ray direction and shear failure along glue line direction.The planar shear modulus and strength of fast-growing poplar and modified fast-growing poplar were higher than those of SPF.Normal fast-growing poplar could been used in CLT as cross layer directly.关键词
速生杨木/横纹压缩改性/浸渍酚醛树脂改性/正交胶合木/滚动剪切/破坏模式Key words
fast-growing poplar/compression in the transverse direction/impregnated modification with PF resin/cross laminated lumber/planar(rolling)shear/failure modes分类
农业科技引用本文复制引用
王志强,付红梅,罗欢,董惟群,骆嘉言,卢晓宁..速生杨木横向层正交胶合木滚动剪切性能[J].南京工业大学学报（自然科学版）,2016,38(5):116-120,5.基金项目
国家自然科学基金 （）
