摘要
本文研究了在使用竹模板浇成的混凝土结构产生严重变形的原因，是由于竹模板吸收了现浇混凝土的水分所造成。进一步测定了竹模板的相对吸水率对其静曲强度和弹性模量的显著影响，并给出了计算公式。
Methods to maximize wood hardness and dimensional stability includes chemical modification,compression and heating treatment.In this study,poplar wood( Populus ussuriensis )was treated with different concentrations of a melamine formaldehyde resin,which was low molecular weight and water soluble,and then compressed while being heated.The results showed 47 per cent of antishrink efficiency( ASE) .And the wood specimen were able to retain almost complete fixation when treated with 10 per cent of resin solution and then soaked in room temperature water and treated with 17 5 and 25 per cent of resin solution and then soaked in boiling water.
出处
《木材工业》
北大核心
1996年第4期22-25,33,共5页
China Wood Industry
关键词
竹质人造板
混凝土模板
吸水率
湿变形
Melamine formaldehyde resin
Compregnated wood
Compression deformation
Poplar wood
