Can I concrete over concrete???

[Lougarbard]

We are in the midst of preparing a base for our new larger shed, part of the base will be an old concrete path, but this needs to be rasied in height.
Do i need to break the path up to lay more concrete over the top, or will it be ok to lay straight on top? Or could i just 'score' the top of the old path to help the new concrete stick?
thank you for your help.

 

[noseall]

if the UK suffered extremely cold and prolonged winters (like Canada, Russia etc.) then i would say no. here in the UK - yes.

clean all the rubbish off the top, wet it prior to laying then fill ya boots.