The Effects of Acrylate Impregnation of Black Spruce Timber as Connectors Strength

BioResources

Pierre Blanchet¹  Philippe Galimard¹  Sylvain Ménard²  Cassandra Lafond³  Véronic Landry³ 

[1] Canada;FPInnovations;Laval University;

关键词: Impregnation;    Wood;    Black spruce;    Bearing strength;    Connector;   

DOI  :  10.15376/biores.11.1.1753-1764

来源: DOAJ

【 摘 要 】

Chemical impregnation of black spruce was conducted to enhance the wood embedment capacity. The formulation was made of 1,6 hexanediol diacrylate, trimethylpropane triacrylate, and a polyester acrylate oligomer. A second formulation, same as the first but with 1% wt of SiO2 nanoparticles, was selected to investigate the potential of nanoparticles and to improve the efficiency of the treatment. The wood embedment capacity was carried out by a dowel-bearing test, which was performed for the two treatments and for an untreated wood group. Both treatments showed an increase of strength of nearly 50% when compared to untreated samples. Micrograph views revealed that the impregnation solution penetrated into the wood only up to 100 μm. Hence, with low chemical consumption, the structural bearing capacity can be significantly increased.

【 授权许可】

Unknown