'Controllable' concrete removal....

[simonB]

I have a solid concrete floor in my house.
Most of the floor has quarry tiles set into the concrete, apart from one corner which is just completely concrete for about a sq meter.
... and that concrete has been filled in level with the top of the tiles.

In order to put matching tiles in that corner, i need to lower the concerete there by about 1/4 inch so i can bed the new tiles in to be level with their old companions.

I've tried block hammer and bolster/chisel ..... i've tried my B&Q hammer drill ... but it's all painstakingly slow.
I have been tempted with a pick ... but obviously don't want to damage the floor deeper than the 1/4 inch.

Any ideas what tool would effectively but 'controllably' remove the top 1/4 of concrete from my solid floor ?

(does all that make sense ??)

 

[Hitachimad]

A concrete planer? Hired.
Would take off about 2mm per pass, so might take a while. And a bit dusty. Just finish the corners with a chisel.
I'm talking about the electric handheld ones btw! Not the push along petrol ones

 

[simonB]

Many thanks .. looked them up on google and got very excited ! Only prob is that they are £50+ to hire for a single day... and I think a builder with the tool in his kit-bag already might do the whole job for the same.

Still, many thanks.. at least now i know i've looked at all the options lol !

 

[Hitachimad]

Have you already got the tiles to match simon?
By the time you have removed the concrete, have you thought about retiling the whole floor? I think you could go over the top as long as they're sound. And you would be sure of an even matching floor.