重组竹燃烧后的顺纹抗压性能检测  

Compressive Strength Parallel to Grain of Bamboo Scrimber after Combustion

作　　者：呼梦洁[1] 俞君宝[1] 张苏俊[1] HU Meng-jie;YU Jun-bao;ZHANG Su-jun(Yangzhou Polytechnic Institute,Yangzhou 225127,Jiangsu,China)

机构地区：[1]扬州工业职业技术学院

出　　处：《木材工业》2019年第6期10-13,共4页China Wood Industry

基　　金：国家重点研发计划“重组竹-泡沫混凝土组合墙板制备关键技术研究与应用”(2018YFD1101002-05);扬州市科技计划项目“重组竹的抗火性能研究”(YZ2018077);2018年度省建设系统科技项目“新型夹心墙板保温材料”(2018ZD117);2019校级科研课题“重组竹-泡沫混凝土组合墙板的热工性能研究”(2019xjzk005)

摘　　要：为探究重组竹燃烧后的抗压性能,在不同受火方式下燃烧不同时间,测试燃烧后试件的炭化深度和顺纹抗压强度。结果表明:随着受火面积增加、受火时间延长,试件的炭化层加深、质量损失率增大,顺纹抗压强度逐渐降低,但在燃烧45min时,重组竹仍能保持44MPa的顺纹抗压强度;四面受火比三面受火试件的顺纹抗压强度损失量大。The bamboo scrimber samples were combusted with three and four sides exposed to fire respectively.After cooling down completely,the compressive strength parallel to the grain of the samples were tested.The results showed that as combustion time increased,the carbonation layer depth and the mass loss rate increased,while the compressive strength parallel to the grain decreased gradually.The bearing capacity of the samples combusted on four sides was lower than that on three sides.The samples maintained the compressive strength of 44 MPa in 45 minutes of combustion time.

关 键 词：重组竹 燃烧 炭化层深度 质量残留率 承载力 顺纹抗压强度 

分 类 号：S781.9[农业科学—木材科学与技术] TS67[农业科学—林学]