I have a couple of bags of Byggmax mortar cement A left over. I plan to cast a couple of benches with Byggmax pre-mixed fine concrete. If I then mix mortar cement + sand 1:3 and mix this thoroughly with the concrete, could it work? How much can I blend in proportionally? I'm mostly concerned about the strength, color variations, etc., aren't so important. Is it completely wrong to cast with the mortar cement? Or is it suitable for casting rhubarb leaves/birdbaths, frogs, and other "stuff"? If you've lugged a couple of bags to the cabin, it's good if they can be put to use.
