sticking plasterboard to concrete lintol

[elmsoft]

While I was removing tiles from round a bathroom window , the old plaster on the concrete lintol fell off too. If I use some sort of "dabs" technique to stick plasterboard to the lintol will it be strong enough to take the weight of the tile?
Would something like Pink Stuff or Grip Fill do the job?

 

[roughcaster]

I'd use Sticks Like Shi*.

 

[elmsoft]

www.screwfix.com/p/evo-stik-sticks-like-sh-t-290ml/22070

Cheers! I'll do exactly that!