Concrete yard one low patch

[aidank]

the concrete yard at the back of my parents house has a low patch.

The yard is 50ftx30ft something like 1:100 slope from end to end.

there is one low patch however its approx 1ftX1ft at one end, and you guessed it its 5ft from the back door.

Its relatively new concrete 3years old, someone just pushed the trowel a bit too much when finishing it I think. Its only 1-2mm too low, however in wet weather when the concrete is wet and damp for a week the damp builds up and the concrete begins to go green.

I dont want to to go digging as the concrete is 6" thick.

any ideas on how to fill it in?

Would a good scratching with an angle grinder to key it up and a bit of chipping with a 5kg kango and a few trowels of self levelling compound do the job ?

 

[txvwnut]

As long as the self leveler can stand to up to the weather that should work just fine.

 

[kaymccampbell]

Put a potted plant on it. Or a piece of sculpture, or furniture.

 

[Shea]

The patch required to level out that low spot is going to stand out like a sore thumb. More so than when it occasionally starts to turn green. I would just live with it and give it a light spray of a bleach solution when it looks like it's beginning to turn green.