Temperature and moisture effects on selected properties of wood fiber-cement composites

被引：18
|
作者：
Blankenhorn, PR [1 ]
Silsbee, MR
Blankenhorn, BD
DiCola, M
Kessler, K
机构：
[1] Penn State Univ, Forest Resources Lab, University Pk, PA 16802 USA
[2] Penn State Univ, Intercoll Mat Res Lab, University Pk, PA 16802 USA
来源：
CEMENT AND CONCRETE RESEARCH | 1999年 / 29卷 / 05期
关键词：
composite; fiber reinforcement; organic materials; compressive strength; freezing and thawing;
D O I：
10.1016/S0008-8846(99)00046-0
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The effects of moisture cycling on the dimensional stability and temperature cycling on the compressive strength of treated wood fiber-cement composites were investigated, The Kraft softwood fibers and the hardwood fibers were treated with an aqueous acrylic emulsion or alkylalkoxysilane prior to manufacturing into wood fiber-cement composites. Moisture cycling results indicated that the treated fiber-cement composites were more resistant to deterioration than the neat cement specimens. The alkylalkoxysilane-treated fiber-cement composites resisted deterioration more than the acrylic emulsion-treated fiber-cement composites. Treated hardwood fiber-cement composites were more resistant than the treated Kraft fiber-cement composites. The effects of temperature cycling on the compressive strength values produced similar results. The treated fibers were more resistant to deterioration than the neat cement. The alkylalkoxysilane-treated Kraft and hardwood fiber-cement composites had higher average compressive strength values than the acrylic emulsion-treated wood fiber-cement composites. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：737 / 741
页数：5
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