Delignification

[domsinagra]

Hi,

My question is, when calculating the structural strength of wood, does the amount of delignification affect the remaining integrity of the wood. Eg if I need a 100mm beam, is a 200mm beam that has delignification to a depth of 100mm (50% delignification) the same as a 100mm beam with no delignification?

I’m having trouble finding any information on it...
Which brings me to my other question. does anyone have a good resource on reading more on delignification?

Thanks!
Dom.

 

[dig1]

Dom,

What is the source of the delignification; assuming room temperature? Delignification definitely weakens the wood structure; that is how wood is chemically pulped into fibers. I'm assuming that the 100 mm of the beam has been exposed to a chemical and the structure is degraded. So in essence you have a structure that has lost the "glue/mechanical support" which is one of the components holding the wood together. Different than if the hemicellulose was removed.

Patrick