How to repair water erosion in laundry tub?

[98_artsier]

A family member has this old laundry tub with a lot of water erosion around the drain that I want to fix. No leaks thankfully. I am looking for advice on the best product to fill the hole that will be friendly to use for someone new to DIY. I have seen epoxy concrete repair kits and expanding cement recommended for similar issues but wasn't sure what would be appropriate here.  I am also interested in recommendations for something that I could apply to completely cover the inside of the tub to hide the repair and current staining. 

[JacobZ]

Hi @98_artsier,

A warm welcome to the Bunnings Workshop community, it is fantastic to have you with us.

You should start by giving the concrete a good cleaning with some Chemtech Concrete Cleaner and a wire brush. You'll have to remove as much of the loose material and dirt that has built up over time.

You can then paint on a bond coat of BondCrete then allow it to dry. Then apply Turbo Concrete Bog to the damaged area using a trowel to press it on and smooth it.

Once dry, you can paint the sink with concrete sealer or concrete paint.

Let me know if you have any further questions.

Jacob