Help - I have concrete birdbath bowl that split into two. I don't know if I can stick the two pieces together again. Using mortar would make the gap too big plus I don't think it would be strong enough to hold the pieces together; they are heavy. Perhaps there is some sort of resin or acrylic bonding material that might do the trick - does anyone have any specific recommendations please? Many thanks for any suggestions.
Here's a picture of the aforementioned birdbath.
Here's a picture of the aforementioned birdbath.