[maxvortex]

Bitumen:
As far as i know bitumen is based on petroleum, and tar on charcoal ( stone ), so i down know if this would work.
Chemical ingredients are different.

Tell me, would it be possible to make tar from some other tree then pine and how much ?

Test:
- i mixed pine tar with carbon powder and i must say that result is quite good.
- the electrical resistance is bigger then in industry based production but i think that this can be solved by hard press and heating.
- conductivity is good to very good and the most important part , i can make the flat electrode.

[maxvortex]

I forget to ask one more thing...
If i heat pine resin on destructive distillation way, what would i get ?
Would i get the same as making d.d. of pine coal/wood ?

[curiouscat]

Tell me, would it be possible to make tar from some other tree then pine and how much ?

I think most wood would work though the exact consistency etc. of the product would change. All you need is a heat and absence of air.