Since wood is natural material, its compressive strength depends on types of species, voids, fiber content, moisture content, age, etc;
Buckling strength of wooden column depends on slenderness ratio and modulus of elasticity. Is is possible to increase compressive strength of wood? Impregnation of wood by suitable resin or chemical may be an option. Lateral pre-stressing may increase compressive strength.
Hello Ishwar,
I found this interesting article which might help to offer some answer to your question:
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/8623j074v
Best wishes
Yes, glue lam is the answer, The strength of glue lam is generally higher than the original strength of the timber it is made of, as the zones with imperfections (voids, knots, mildew) are not used to generate glue lam and only the sound and resistent part of the natural timber is used.
The density of wood is directly proportional to compression strength of wood. Viscoelastic Thermal Compression (VTC) is a treatment which may enhance the compression strength of wood. and here are two article links to better explain to you.
https://www.sciencedirect.com/science/article/pii/S0927775708004433
https://ir.library.oregonstate.edu/concern/defaults/zs25x8984
Impregnation of resins could be a good start for improvement of physical properties of timber as well as providing durability against environment.
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